• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method and device for injecting rock or soil masses, e.g. of boreholes in connection with tunneling, blasting of rock chambers, or in dam constructions. Injection mill from a common supply pump (1) is pumped simultaneously through a plurality of grouting hoses (3) to a plurality of grouting holes (AG), and where at least pressure (10) and injected volume (9) are monitored and measured individually for the supply to each of the said grouting holes (AG). The device comprises for each grouting hose (3) a pressure sensor (10) and a flow meter (9) connected to a monitoring device (11) for recording for each of the grouting hoses (3) / grouting holes (AG) the pressure and injected volume of the supplied the grouting use.
    公开号:SE1551697A1
    申请号:SE1551697
    申请日:2015-12-22
    公开日:2017-06-23
    发明作者:Stoor Joakim
    申请人:Veidekke Entreprenad Ab；
    IPC主号:
    专利说明:

    The present invention relates to a method and an apparatus for injecting rock or soil masses, e.g. of boreholes in connection with tunnel driving blasting of rock chambers, or in dam constructions, and especially to be able to perform grouting faster and more efficiently than has been the case so far. Injection means that a grouting material, usually a cement-like mixture, is introduced into boreholes before blasting to the natural crack system of the dense rock, thus preventing water from penetrating the rock after blasting a tunnel. Injection is thus part of the work during tunnel driving and usually consists of a number of steps such as drilling grouting holes -> hole cleaning -> possible water loss measurement -> grouting -> waiting time -> tunnel driving. The different steps in the process must be performed in turn because they affect each other, and since the injection itself is one of the parts that takes the longest time, it is of great interest to be able to reduce the time this part of the pFOCeSS takes F.
    When the rock has been scrapped after a tunnel salvo and possibly reinforced, drilling of the so-called the grouting screen. The number of holes and their length and location vary between different projects and are usually determined on the basis of a defined sealing class and tunnel size. The most common is that the grouting holes are drilled with a diameter of 64 mm and about 20m long. At the same time as the holes are being drilled, they are flushed with high pressure by means of the drilling unit until the flushing water is clean from the drill cuttings. The cleaning is important so that the mortar used in the grouting can penetrate into the cracks that are present, and which could otherwise be plugged again by the remaining cuttings. During the drilling, the grouting equipment can be prepared. The grouting work begins by advancing the grouting unit. the grouting unit can be mounted on its own vehicle, or on a platform that can be moved by other means to the place where the grouting work is to be carried out. Electricity and water are connected to the grouting unit. Hoses between the grouting components are connected and C: PatraWin DOKWORK 151222 Application textdocx, 2015-12-15 150121EN everything is flushed. I / | anchors are mounted on nozzles and hoses are pulled out. When these preparations are ready, the first use mixture is mixed and the actual injection can begin.
    Initially, the bottom holes are often injected, and this is done by inserting a nozzle with mounted disposable sleeve into the hole to be injected. The prepared mortar mixture is pumped through hoses and nozzles into the drilled grouting holes until the mortar penetrates out of the grouting hole instead of water, which means that the entire self-volume of the hole is filled with mortar. Thereafter, the cuff is inflated and thereby anchored in the orifice of the hole, after which the pressure can be increased and grouting in addition to the self-volume of the hole can be started to cause the mortar to penetrate into crack formations which are in contact with the grouting hole.
    When grouting, as mentioned above, you usually start with bottom holes, and then they are most centrally located and then continue outwards and then horizontally upwards and finally the holes on the top of the future tunnel. Usually two holes are injected at a time. When the holes change direction from being directed downwards to being directed upwards, usually in the upper part of the horizontal row of holes, the cuff in the hole mouth must go up directly so that the pumped mill does not run out.
    When grouting, there are stop criteria specified for when the grouting of a hole is to be considered completed. Usually these stopping criteria are a maximum pressure determined for the hole which is reached or a maximum grouting volume. Alternatively, a maximum grouting time may also be set in case none of the others should interrupt the grouting.
    If a grouting hole is filled to its maximum permissible volume for the first mortar mixture without the stopping pressure being reached, you proceed to grouting with a thicker mortar. Often two to three different vct numbers are prescribed, where you start with the thinnest and end with the thickest. The injection continues in this way until all holes in the grouting screen have been grouted and meet the stop criteria.
    C: PatraWin DOKWORK 151222 Application text doc, 2015-12-15 150121EN When the last hole in a grouting screen has been finished grouting, start cleaning the equipment and flushing and disassembling the hoses and nozzles before moving the grouting equipment away from the current grouting stand.
    With current technology, the grouting has usually required two people to handle the equipment, one who controlled and controlled mixers and pumps and one who monitored the hoses and moved them between different grouting holes. Two people are then unable to handle more than two grouting holes at a time, and the grouting thus takes a considerable time, especially as a grouting screen may comprise 20 holes or more. The object of the present invention is to provide a method and a device adapted thereto in order to be able to simultaneously inject a plurality of holes in order to be able to speed up the injection process.
    This object of the invention is achieved with a method for grouting where grouting use from a common supply pump is simultaneously pumped through a plurality of grouting hoses to a plurality of grouting holes, and where at least pressure and grouted volume are monitored and measured individually for the supply to each of the mentioned the injection hole.
    According to a preferred embodiment of the method according to the invention, the time that grouting in a grouting hole lasts for each of the grouting holes is also monitored.
    According to a further preferred embodiment of the invention, the injection is monitored by means of a control unit in which for each injection hole an upper limit value is entered for each of pressure, injected volume and possible time, and which control unit is arranged to interrupt the injection in the input value. grouting holes for which the limit value has been reached. The object of providing a device which is adapted to be able to inject several injection holes simultaneously in accordance with the method according to the invention is achieved in that the device comprises a pump for injection use connected to a plurality of injection hoses each connected to a grouting hole for simultaneous feeding of the grouting mortar to the connected grouting holes, the device also for each grouting hose comprising a pressure sensor and a flow meter connected to a monitoring device for each of the grouting hoses / injection hoses and injected volume on the added grout.
    According to a preferred embodiment of the device according to the invention, it also comprises a timer for recording the time during which grouting use is supplied through the grouting hose to the grouting hole.
    According to yet another preferred embodiment of the device according to the invention, the monitoring device comprises a control unit in which for each grouting hole an upper limit value is entered for each of pressure, injected volume and possible time, and which control unit is arranged to interrupt the grouting when the entered limit value is reached. in the grouting hole for which the limit value has been reached.
    The invention will now be described in more detail in the form of a preferred but non-limiting exemplary embodiment of the invention, illustrated by means of the accompanying drawing figures, in which Fig. 1 shows a schematic perspective view of a device according to the invention, Figs. Fig. 2 shows a flow chart for a method according to the invention, in the position just before injection begins, Fig. 3 shows a corresponding view as Fig. 2 but in the position when all valves for injection of use are open and a certain volume of injection has been injected into each injection hole, Fig. 4 shows a corresponding view as in Fig. 3 but where a preset limit level of the pre-volume has been reached for one of the grouting holes, Fig. 5 shows a view corresponding to Fig. 4 while the preset limit pressure has been reached while the limit level of the volume has been reached for four of the grouting holes. Fig. 6 shows a view corresponding to Fig. 5, but injection therein continues in the four holes which in Fig. 5 had reached the limit level for the volume, while other grouting hoses are disconnected and of which one is cleaned, Fig. 7 shows a view corresponding to Fig. 6, where flushing of disconnected grouting hoses is complete and where a new preset limit level for two grouting holes has been reached, Fig. 8 shows a view corresponding to C: PatraWin DOKWOR K 151222 Application text doc, 2015-12-15 150121EN Fig. 7 where the preset limit pressure has been reached again while the limit level pre-volume has been reached for another grouting hole, Fig. 9 shows a view corresponding to Fig.8 but where the grouting continues for the three grouting holes for which the limit level for the volume had been reached, while the grouting hose for the grouting hole for which the limit pressure had been reached was disconnected and now flushed, Fig. 10 shows a view corresponding to Fig.9 but where the grouting pressure reached a new preset limit value, and the for two de-injection holes a new limit level for the volume has been reached, Fig. 11 shows a view corresponding to Figs. Fig. 10 where a new volume level limit has been reached for one of the two remaining grouting holes and the grouting pressure has been reached for the other remaining grouting hole, 12 shows a view where a new volume level limit has been reached for the last remaining injection hole, and when all the injection hoses have been disconnected and all valves have been opened for flushing the system.
    Fig. 1 thus schematically shows a perspective view of a device according to the invention, and which comprises a grouting pump 1 for feeding via a manifold 2 a ready-to-use mixture to a plurality of grouting hoses 3, which in turn are each connected to a grouting hole. The injection hoses are preferably of the hydraulic hose type as they must be able to withstand a considerable pressure in connection with feeding and pressure maintenance of the injection mold. A mixer (not shown) mixes the parts to be included in the use mixture to be injected into an injection hole and by means of pumps the use mixture is fed to the injection pump 1. This is entirely according to the prior art, so these parts are not shown or described in more detail.
    A valve, preferably a three-way valve 4, is connected to the branch pipe 2, as will be described in more detail below, for each of the plurality of grouting hoses 3 connected to the grouting pump 1. As shown in the drawing figure, a pipeline 5 can be arranged between the valve 4 and the injection hose 3. The injection hose 3 is at its other end in a known manner with a cuff connected to an injection hole which is injected with the use mixture. To the three-way valve 4 for each injection hose 3 is also connected a water line 6 which is fed with water by a water pump 7, such as C: PatraWin DOKWORK 151222 Application text doc, 2015-12-15 150121EN will be described in more detail below. At each three-way valve 4 a control device 8 is also arranged, which can control the function of the three-way valve.
    On the pipeline 5 between the three-way valve 4 and the injection hose 3, for each injection hole, a flow meter 9 is further arranged to measure the volume of utility mixture flowing through the pipeline 5, and likewise in each pipeline 5 an entry sensor 10 is arranged which registers the pressure on the mortar mixture inside the pipeline 5, which pressure is then also assumed to correspond to the pressure in the mortar mixture in the grouting hole to which the grouting hose is connected.
    The flow meters 9 and pressure sensors 10 for each pipeline 5 are connected to a control unit 11 which monitors the flow and pressure in each of the pipelines 5, and the control unit 11 is also connected to the control device 8 for each pipeline 5 to individually control the supply of the three-way valves 4 to the respective grouting hoses 3. The control unit 11 suitably comprises a programmable computer, with input and display means, in order to be able to control the grouting process as will be described in more detail below.
    Fig. 2 to Fig. 12 schematically show in the form of a flow chart how simultaneous injection of a number of injection holes A, B, C, D, E, F and G takes place, and shows the branch pipe 2 at the bottom edge of the figures, and also the water pipe 6 as well as the three-way valves 4, which for each injection hole AG are shown as circles, where an X in resp. circle indicates that the valve 4 is then closed, with the round circle without X indicates that the current valve is then open. The figures also show a box 12 with a volume indication, which in principle corresponds to the result of what the flow meter 9 has read for each grouting hole A-G. The box 12 is not found in practice at each grouting hole A-G, but is the numerical value registered in the control unit 11 and can be displayed on its display means, e.g. a computer screen.
    Fig. 2 shows the situation before the grouting pump 1 is activated, and the pressure in the distribution pipe 2 is 0. All three-way valves 4 are completely closed, and can therefore neither release any use mixture from the distribution pipe 2 nor water from the water line 6. Boxer-C: PatraWin DOKWORK 151222 Application text docs, 2015-12-15 150121SE na with volume indication also shows all 0, which thus corresponds to the amount registered by the flow meter for each pipeline 5.
    Fig. 3 shows that a utility mixture with a pressure of about 7 bar is supplied in the distribution pipe 2, and since all three-way valves 4 have been opened to allow supply of the utility mixture through the pipes 5 to the various grouting holes AG, an inflow into them, and the flow meters 9 register it. volume flowing through each of the pipelines5 and grouting hoses 3 to the grouting holes. From the numerical values in each box 12 it appears that the inflow in the different grouting holes A-G varies. It can be seen from the example shown, which may well correspond to a real case that the flow varies greatly between different injection holes, in the example shown in this position between 4 and 37 liters. The difference in injected volume is due to the fact that the grout flows in the fastest in the holes where it meets the least resistance.
    Fig. 4 shows a further advanced position in the grouting, and where mortar mixture continues to flow through the manifold 2, now with further increased pressure in the manifold, and the volumes fed into the grouting holes have increased markedly compared with the position in Figs. 3, as can be seen from the volume data in the boxes 12. For the grouting hole F, the volume data shows that 100 liters are fed in, which corresponds to a preset volume criterion for temporarily stopping the grouting in this grouting hole. Therefore, the control unit 11, which has been given the information about the injected volume from the flow meter 9, is connected to the pipeline 5 for the injection hole F, and has then activated the control device 8 to close the three-way valve 4 in this pipeline, as indicated by an X in the circle from the manifold 2. The injection continues into the other injection holes AE and G.
    Fig. 5 shows an even more advanced position in the grouting with further increased pressure in the manifold 2. Here, the grouting holes B, C and G have also reached the preset volume criterion, and the valves 4 have been closed in their pipelines, as indicated by a Xicirklarna from the manifold 2. the pressure (30 bar) prevailing in the manifold 2 also corresponds to the preset maximum pressure, according to the selected example, and the grouting pump is stopped by the control unit to maintain the pressure in the grouting holes A, D and E, which is not C: PatraWin DOKWORK 151222 Application text , 2015-12-15 150121EN met the preset volume criterion, and the three-way valves 4 from the manifold 2 to these grouting holes are kept open for a predetermined time to maintain the pressure (30 bar) of the mortar mixture in the grouting holes A, D and E. When the predetermined holding time it has passed, the three-way valves 4 are also closed to these grouting holes, and then the pressure in the distribution pipe 2 is lowered before resuming.
    Fig. 6 shows a position when the grouting is resumed, and the three-way valves 4 from the distribution pipe 2 to the grouting holes B, C, F and G which were previously closed because the achieved preset volume criterion has been reopened to allow continued grouting of the exhaust mixture into these grouting holes . For the grouting holes A, D and E which did not reach the preset volume criterion (100 liters) before the preset maximum pressure was reached, the grouting hoses 3 can now be disconnected, which is done manually by an operator. The figure shows that the curved arrows that the grouting hoses to the grouting holes A, D and E have been disconnected, and for the grouting hose A the three-way valve 4 from the water line 6 has been opened to allow flushing of the grouting hose 3. Corresponding cleaning is then made of the grouting hose 3 and E.
    Fig. 7 shows a stage during the continued grouting when the volume of the grouting holes Boch G has reached the next preset volume criterion, total injected volume of 200 liters per grouting hole. Thus, by means of the control devices 8, the control unit 11 has closed the three-way valves 4 for these two grouting holes so that no use mixture can be supplied to them, while the pressure is allowed to continue to increase for grouting the use mixture in the grouting holes C and F, for which the three-way valves 4 the use mixture from the distribution pipe 2 is kept open.
    Fig. 8 shows when the pressure has risen to 30 bar, which is the preset maximum pressure, and then also the volume of the grouting hole C has reached the next preset volume criterion, and the control unit thereby also closes the three-way valve for supply to this grouting hole. The pre-injection hole F, on the other hand, has the maximum pressure reached without the volume reaching the preset volume criterion. The three-way valve 4 from the distribution pipe 2 to this injection hole C: PatraWin DOKWORK 151222 Application text docx, 2015-12-15 150121EN 150121EN ring hole F is kept open for a predetermined time to maintain the pressure (30 bar) on the mortar mixture in the grouting hole.
    Fig. 9 shows that when the predetermined holding time has elapsed, the three-way valve 4 is also closed to this grouting hole, and during the further process the grouting hose to the grouting hole F is disconnected, and then the pressure in the manifold 2 is lowered before the grouting resumes and the three-way valves 4 are supplied. the grouting hoses to the grouting holes B, C and G. Then the disconnected grouting hose 3 used for the grouting hole F is also flushed.
    Fig. 10 shows that during the continued grouting, the next preset volume criterion, a total injected volume of 300 liters per grouting hole, has been achieved for the grouting holes B and C. Thus, with the aid of the control devices 8, the control unit 11 has closed the three-way valves 4 for these two grouting holes so that no use mixture can be supplied to them. At the same time, in this case, the maximum pressure of 30 bar has also been reached for the grouting hole G, and the pressure has been maintained for the predetermined time for this grouting hole, and thereafter the three-way valve 4 to this grouting hole has also been closed, and the grouting hose has been disconnected.
    Thereafter, a continued grouting takes place in the grouting holes B and C, but preferably before this further grouting, a change of use mixture starts. Fig. 11 shows the position when the maximum pressure of 30 bar has again been reached, and in this case a new preset volume criterion, total injected volume of 400 liters, has also been reached for grouting hole C. For grouting hole B, the pressure has been maintained for the predetermined time. , and subsequently the three-way valve 4 to this grouting hole has also been closed, and the grouting hose 3 has been disconnected in order to be flushed.
    All grouting holes except grouting hole C are thus finished and continued grouting is done only by grouting hole C. For the continued grouting, the benefit can be changed to another use mixture, and Fig. 12 shows the situation when the grouting process has ended. In the case of the grouting hole C, the grouting has been interrupted C: PatraWin DOKWORK 151222 Application text doc, 2015-12-15 150121EN when the total injected volume in this grouting hole has reached the predetermined maximum permissible grouting volume, 600 liters. The injection hose 3 has been disconnected for this injection hole as well and has been flushed. As the whole grouting process is completed, all three-way valves 4 in the system have been opened, as can be seen from the circles missing X and thus not only the pipelines 5 and grouting hoses 3 but also the manifold 2 can be flushed with the water supplied to the three-way valves 4 from the water pipe 6.
    In the process described above, simultaneous grouting in seven grouting holes A-G has been described, but it is a given that the equipment may be designed for simultaneous grouting in less than seven holes as well as it may be designed for grouting in more than seven holes. It is a question of what is practical. Likewise, equipment designed for grouting, for example seven holes, can also be used for grouting in fewer holes at the same time, by defining the programming unit 11 how many holes to be grouted, and then opening the three-way valves 4 for the programmed holes to release the grouting operation.
    Thus, with the method and device according to the invention, a continuous and simultaneous measurement of flow and pressure to each of the holes being injected takes place during the grouting, and the method and the device are controlled so that preset criteria for the grouting are achieved for each of the grouting holes.
    C: PatraWin DOKWORK 151222 Application textdocx, 2015-12-15 150121EN
    权利要求:
    Claims (10)
    [1]
    Method for injecting rock or soil masses, characterized in that injecting mortar from a common supply pump (1) is simultaneously pumped through a plurality of injecting hoses (3) to a plurality of injecting holes, and in which at least pressure (10) and injectable volume (9) is monitored and measured individually for the supply to each of the mentioned grouting holes (AG).
    [2]
    A method according to claim 1, characterized in that also the time that injection lasts in an injection hole is monitored for each of the injection holes (A-G).
    [3]
    Method according to Claim 1 or 2, characterized in that the grouting is monitored by means of a control unit (11) in which an upper limit value is entered for each grouting hole (AG) for each volume injected by pressure (10). (9) and, if applicable, time, and which control unit (11), when the input limit value is reached, is arranged to interrupt the injection in the injection hole (AG) for which the limit value has been reached.
    [4]
    4. A method according to claim 3, characterized in that when the input limit value for pressure in an injection hole (A-G) is reached, this pressure is maintained in this injection hole by the control unit for a predetermined pressure holding time.
    [5]
    Method according to Claim 3 or 4, characterized in that an intermediate limit value is also entered for the injected volume (9) and wherein the control unit (11) is arranged to temporarily interrupt the injection for the injection hole (AG) for which the intermediate limit value has been reached without one of the upper limit values has been reached.
    [6]
    Device for injecting rock or soil masses, characterized in that the device is adapted to be able to inject several injection holes (AG) simultaneously by the device comprising a pump (1) for injection use connected to a plurality of injection hoses (3) which are each connected to a grouting hole (AG) for simultaneous feeding of the grouting mortar to the connected grouting holes (AG), and that the device C: PatraWin DOKWORK 151222 Application textdocx, 2015-12-15 150121EN 12 also for each grouting hose (3 ) comprises a pressure sensor (10) and a flow meter (9) connected to a monitoring device (11) for recording for each of the injection hoses (3) / injection holes (AG) pressure and injected volume on the supplied injection mortar.
    [7]
    Device according to claim 6, characterized in that it also comprises a timer for recording the time during which grouting use is supplied through the grouting hose (3) to the grouting hole (A-G).
    [8]
    Device according to claim 6 or 7, characterized in that the monitoring device comprises a control unit (11) in which for each grouting hole (AG) an upper limit value is entered for each of pressure, injected volume and possibly time, and which control unit (11) when the input limit value is reached, it is arranged to interrupt the grouting in the grouting hole (AG) for which the limit value has been reached.
    [9]
    Device according to claim 8, characterized in that the pump (1) is arranged to supply grouting mortar to the grouting hoses (3) via a manifold (2), and that each grouting hose (3) is connected to the manifold (2) via a valve device (4) which is controlled by the control unit (11) in order to allow or interrupt the injection via each of the injection hoses.
    [10]
    Device according to claim 9, characterized in that the valve device (4) is a one-way valve which is also connected to a water line (6) for supplying purge water to the injection hose (3) when the control unit (11) has registered that its injector ring hole (AG) is pre-injected and the grouting hose (3) has been disconnected from the current grouting hole (AG). C: PatraWin DOKWORK 151222 Application textdocx, 2015-12-15 150121EN
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    同族专利:
    公开号 | 公开日
    DK3184732T3|2019-04-23|
    SE541021C2|2019-03-12|
    EP3492697A1|2019-06-05|
    EP3184732A1|2017-06-28|
    EP3184732B1|2019-01-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2084885A5|1970-03-19|1971-12-17|Atlas Copco Ab|
    SE407604B|1975-04-11|1979-04-02|Cavallin Christer|INJECTION DEVICE|
    ITPC20130020A1|2013-06-13|2014-12-14|Francese Mauro Del|COMPUTERIZED POWER INJECTION SYSTEM FOR VALVE MULTIPLE ENTRY PIPES|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1551697A|SE541021C2|2015-12-22|2015-12-22|Procedure and apparatus for injecting rock or soil mass|SE1551697A| SE541021C2|2015-12-22|2015-12-22|Procedure and apparatus for injecting rock or soil mass|
    EP16206348.1A| EP3184732B1|2015-12-22|2016-12-22|Method and arrangement for the injection of rock and soil material|
    DK16206348.1T| DK3184732T3|2015-12-22|2016-12-22|Method and arrangement for injection of rock and soil material|
    EP18214578.9A| EP3492697A1|2015-12-22|2016-12-22|Method and device for injecting rock and soil mass|
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