EP3184732B1 - Verfahren und anordnung zur injektion von gestein und bodenmaterial - Google Patents

Verfahren und anordnung zur injektion von gestein und bodenmaterial Download PDF

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Publication number
EP3184732B1
EP3184732B1 EP16206348.1A EP16206348A EP3184732B1 EP 3184732 B1 EP3184732 B1 EP 3184732B1 EP 16206348 A EP16206348 A EP 16206348A EP 3184732 B1 EP3184732 B1 EP 3184732B1
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EP
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Prior art keywords
injection
control unit
arrangement
reached
holes
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EP16206348.1A
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English (en)
French (fr)
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EP3184732A1 (de
Inventor
Joakim Stoor
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Veidekke Entreprenad AB
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Veidekke Entreprenad AB
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Priority to EP18214578.9A priority Critical patent/EP3492697A1/de
Publication of EP3184732A1 publication Critical patent/EP3184732A1/de
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/001—Improving soil or rock, e.g. by freezing; Injections
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • E21B33/138—Plastering the borehole wall; Injecting into the formation
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E21D20/02—Setting anchoring-bolts with provisions for grouting
    • E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E21D20/02—Setting anchoring-bolts with provisions for grouting

Definitions

  • the present invention concerns a method and an arrangement for the injection of rock or soil material, for example injection into boreholes in correlation with tunnelling, the excavation of rock caverns, or during the construction of dams, and in particular such that it is possible to carry out injection more rapidly and efficiently than has been possible until now.
  • Injection involves an injection material, normally a cement-like mixture, being introduced into the borehole before blasting in order to seal the natural fracture structure of the rock, and in this way prevent the penetration of water through the rock after a tunnel has been blasted.
  • injection is part of the work of tunnelling, and normally consists of a number of steps, such as the drilling of injection holes ⁇ cleaning the holes ⁇ in certain cases the measurement of water loss ⁇ injection ⁇ a period of delay ⁇ and finally tunnelling.
  • the various steps of the process must be carried out one after the other, since they influence each other, and since the actual injection is one of the parts that takes the longest time, it is of great interest to be able to reduce the time that this part of the process takes.
  • injection screen When the rock has been cleared after a blasting salvo and after reinforcement, where necessary, has been carried out, the drilling of what is known as the "injection screen" starts.
  • the number of holes and their depth and location differ between different projects and are normally determined based on a defined sealing class and tunnel size. It is most commonly the case that injection holes are drilled with a diameter of 64 mm and with a depth of approximately 20 m.
  • they are flushed clear using high-pressure with the aid of the drilling unit, until the flushing water no longer contains drilling cuttings.
  • the flushing is important such that the grout that is used during injection can penetrate the fractures that are present, which otherwise may be clogged by remaining cuttings. While the drilling is taking place, the injection equipment can be prepared.
  • the injection operation starts when the injection unit is driven forwards.
  • the injection unit may be mounted on a separate vehicle, or on a platform that can be displaced forwards by other means to the position at which the injection is to be carried out. Electricity and water are connected to the injection unit. Pipes are connected between the injection components and everything is flushed clean. Sleeves are mounted onto the nozzles and pipes are laid. Once these preparations are complete, the first grouting mix is mixed and the injection operation itself can start.
  • the lowermost holes are initially injected, and this is carried out by a nozzle with a single-use sleeve being introduced into the hole that is to be injected.
  • the grouting mix that has been prepared is pumped through pipes and nozzles into the drilled injection holes until grout is expelled from the injection hole instead of water, which means that the complete dead volume of the hole has been filled with grout.
  • the sleeve is inflated and in this way anchored in the mouth of the hole, after which the pressure can be increased and injection beyond the dead volume of the hole can start, in order for the grout to penetrate into fractures that are in contact with the injection hole.
  • stop criteria have been specified to determine when the injection of a hole is to be considered to be complete. These stop criteria are normally a specified maximum pressure that is to be achieved for a hole, or a maximum injection volume. Alternatively, also a maximum injection time may be specified, in the case in which none of the other criteria interrupts the injection.
  • an injection screen can comprise 20 holes or more.
  • FR 2 084 885 A5 describes an injection device for the simultaneous injection of grout into at least two boreholes, wherein flow regulators are arranged in injection nozzles to maintain the flow rate through the nozzle essentially independent of the counter pressure in the nozzle. All the other valves shown and described are for a completely manual handling, and the device requires that a worker regulates the valve to make any changes, also for the opening of a water valve for opening of the water under pressure to the borehole.
  • the valve of an injection pipe is not closed when it is assessed that the current injection hole has been filled. Instead, the flow regulation valve is regulated such that the flow is cut off, and the injection pipe is subsequently disconnected from the borehole. The injection pipe is instead led back to the preparation unit, and in this way back to the injection pump and distribution chamber. It is also stated in the said document that it is necessary at certain intervals to considerably increase the flow-through area of the constricted distribution valve for a short period, in order to create pressure pulses in order to prevent the injection mixture solidifying in the flow regulation valves.
  • the purpose of the present invention is to achieve a method and an arrangement adapted for this method in order to be able to inject several holes at the same time in order to be able to speed up the injection operation.
  • This aim of the invention is achieved with a method for the injection in which the control unit, at a final interruption of the injection of an injection hole, regulates a valve arrangement such that grout is no longer fed to the injection pipe that leads to the current injection hole and instead connects a water line for the supply of water to the valve arrangement and the injection pipe for the rinsing clean of these.
  • the duration of the injection in an injection hole is monitored for each one of the injection holes.
  • the injection is monitored with the aid of the control unit into which has been input for each injection hole an upper limiting value for each one of pressure, injected volume and possibly also duration, and which control unit, in the event that the limiting value that has been input is reached, is arranged to interrupt the injection into the injection hole for which the limiting value has been reached.
  • the purpose to achieve an arrangement that is adapted such that it is able to inject several injection holes at the same time according to the method according to the invention is achieved through the arrangement comprising a pump for grout connected to several injection pipes, each one of which is connected to an injection hole for the simultaneous feed of grout to the injection holes that are connected, whereby the arrangement for each injection pipe comprises also a pressure sensor and a flow gauge connected to a surveillance arrangement or control unit, and where the arrangement comprises also a water line that is connected through a valve arrangement for the supply of rinsing water to the injection pipe when the control unit has registered that injection into its injection hole is complete and the injection pipe has been disconnected from the relevant injection hole.
  • it comprises also a timer to record the duration during which grout is supplied through the injection pipe to the injection hole.
  • the monitoring arrangement comprises a control unit into which has been input for each injection hole an upper limiting value for each one of pressure, injected volume and possibly also duration, and which control unit, in the event that the limiting value that has been input is reached, is arranged to interrupt the injection into the injection hole for which the limiting value has been reached.
  • Figure 1 shows a schematic perspective view of an arrangement according to the invention
  • Figure 2 shows a flow diagram for a method according to the invention, in the condition just before injection starts
  • Figure 3 shows a view corresponding to that shown in Figure 2 , but in the condition in which all valves for the injection of grout are open and a certain volume of grout has been injected into each injection hole
  • Figure 4 shows a view corresponding to that shown in Figure 3 , but in which a pre-determined limiting value for the volume has been reached for one of the injection holes
  • Figure 5 shows a view corresponding to that shown in Figure 4 , but in which the pre-determined limiting value for pressure has been reached at the same time as the limiting value for the volume has been reached for four of the injection holes
  • Figure 6 shows a view corresponding to that in Figure 5 , but in which injection continues in the four holes that in Figure 5 had achieved the limiting value for the volume, while other injection pipes are disconnected, and where one
  • Figure 1 shows schematically a perspective view of an arrangement according to the invention, and that comprises an injection pump 1 in order to feed through a distributor pipe 2 a completed grouting mix to several injection pipes 3, each of which is, in turn, connected to an injection hole.
  • the injection pipes are preferably of hydraulic pipe type, since they must be able to withstand a significantly increased pressure in association with the feed of the grout and maintaining its pressure.
  • a mixer not shown in the drawings, mixes the components that are to be components of the grouting mix that is to be injected into an injection hole, and the grouting mix is fed with the aid of pumps to the injection pump 1 itself. This is fully prior art technology, and for this reason these parts are not shown or described in more detail.
  • a valve preferably a three-way valve 4, is connected to the distribution pipe 2, as will be described in more detail below, for each one of the several injection pipes 3 that are connected to the injection pump 1.
  • a pipeline 5 may be arranged between the valve 4 and the injection pipe 3 itself.
  • the injection pipe 3 is at its other end connected in known manner via a sleeve to an injection hole that is to be injected with the grouting mix.
  • a water line 6 is connected to the three-way valve 4 for each one of the injection pipes 3, which water line is fed with water by a water pump 7, as will be described in more detail below.
  • a regulator 8 is arranged at each three-way valve 4, which regulator can control the function of the three-way valve.
  • a flow gauge 9 arranged to measure the volume of grouting mix that flows through the pipeline 5, and in the same way there is arranged in each pipeline 5 a pressure sensor 10 that records the pressure of the grouting mix inside the pipeline 5, which pressure is assumed to correspond to the pressure in the grouting mix in the injection hole to which the injection pipe is connected.
  • the flow gauges 9 and the pressure sensors 10 for each pipeline 5 are connected to a control unit 11 that monitors the flow and the pressure in each one of the pipelines 5, and the control unit 11 is connected also to the regulator 8 for each pipeline 5 in order to be able to regulate individually the setting of the three-way valves 4 that manage the supply to the relevant injection pipes 3.
  • the control unit 11 comprise a programmable computer, with input means and display means, in order to be able to control the injection process as will be described in more detail below.
  • Figure 2 to Figure 12 show schematically in the form of a flow diagram how simultaneous injection of a number of injection holes A, B, C, D, E, F and G is carried out, where the drawings show a distribution pipe 2 at the bottom, together with the water line 6 and the three-way valves 4, which for each injection hole A-G are displayed as circles, where an "X" in any particular circle indicates that the valve 4 is there closed, while a round circle without an "X" indicates that the relevant valve is open.
  • the drawings show also a box 12 with a volume specification, which corresponds in principle to the result that the flow gauge 9 has recorded for each injection hole A-G.
  • the box 12 is not, in practice, present at each injection hole A-G: it is the numerical value that has been recorded in the control unit 11 and can be displayed on its display unit, such as, for example, a computer screen.
  • FIG 2 shows the situation before the injection pump 1 has been activated, and in which the pressure in the distribution pipe 2 is zero. All three-way valves 4 are fully closed, and thus they can allow to pass neither grouting mix from the distribution pipe 2 nor water from the water line 6. The boxes with the volume specifications all thus show "0", which corresponds to the amount that the flow gauge has recorded for each pipeline 5.
  • Figure 3 shows that a grouting mix with a pressure of approximately 7 bar is supplied to the distribution pipe 2, and since all three-way valves 4 have been opened to allow the supply of grouting mix through the pipelines 5 to the various injection holes A-G, input flow into these occurs, and the flow gauges 9 record the volume that flows through each one of the pipelines 5 and the injection pipes 3 to the injection holes. It is made clear by the numerical values in the relevant boxes 12 that the input flows in the different injection holes A-G differ. As is made clear by the example shown, which could very well correspond to a true case, the flow differs highly between the different injection holes. In the example shown, in the condition shown, the flow ranges from 4 to 37 litres. The difference in injected volume is a consequence of the grout flowing most rapidly into the holes at which it meets the lowest resistance.
  • Figure 4 shows a further more advanced condition during the injection process, and where grouting mix continues to flow through the distribution pipe 2, now with an increased pressure in the distribution pipe, and the volumes fed into the injection holes have increased markedly from those in the condition shown in Figure 3 , as is made clear by the volume information in the boxes 12.
  • the volume information shows that a volume of 100 litres has been fed in, which corresponds to a pre-determined volume criterion for a temporary stop of the injection into this injection hole.
  • the control unit 11 has, therefore, received the information about the volume that has been injected from the flow gauge 9 connected to the pipeline 5 for the injection hole F, and has then activated the regulator 8 to cause it to close the three-way valve 4 in this pipeline, which is indicated by an X in the circle from the distribution pipe 2.
  • the injection continues in the other injection holes A-E and G.
  • Figure 5 shows an even more advanced condition in the injection process with an even further increased pressure in the distribution pipe 2.
  • the injection holes B, C and G have reached the pre-determined volume criterion, and the valves 4 have been closed in the pipelines for these injection holes, which is indicated by an X in the circles from the distribution pipe 2.
  • the pressure that is present in the distribution pipe (30 bar) corresponds also to the pre-determined maximum pressure, according to the selected example, and the injection pump 1 is stopped by the control unit in order to maintain the pressure in the injection holes A, D and E, which have not reached the pre-determined volume.
  • the three-way valves 4 from the distribution pipe 2 to these injection holes are held open for a pre-determined duration in order to maintain the pressure (30 bar) in the grouting mix in the injection holes A, D and E.
  • the pre-determined retention time has passed, also the three-way valves 4 to these injection holes are closed, and the pressure in the distribution pipe 2 is subsequently reduced before the injection is resumed.
  • Figure 6 shows a condition in which the injection process has been resumed, and the three-way valves 4 from the distribution pipe 2 to the injection holes B, C, F and G, which were previously closed because they had reached the pre-determined volume criterion, have been re-opened in order to allow continued injection of grouting mix into these injection holes.
  • the injection pipes 3 can now be disconnected, which is carried out manually by an operator.
  • the drawing shows that the curved arrows [sic, faulty syntax?] that the injection pipes to injection holes A, D and E have been disconnected, and that for the injection pipe A the three-way valve 4 from the water line 6 has been opened in order to allow rinsing clean of the injection pipe 3. A corresponding rinsing clean operation is subsequently carried out of injection pipes 3 for the injection holes D and E.
  • Figure 7 shows a condition during the continued injection in which the volumes for the injection holes B and G have achieve the next pre-determined volume, a total injected volume of 200 litres per injection hole.
  • the control unit 11 in this condition has, with the aid of the regulators 8, closed the three-way valves 4 for these two injection holes such that no grouting mix can be supplied to these, while the pressure is allowed to continue to increase for the injection of grouting mix into the injection holes C and F, for which the three-way valves 4 for the supply of grouting mix from the distribution pipe 2 are continued to be held open.
  • Figure 8 shows the condition in which the pressure has risen to 30 bar, which is the pre-determined maximum pressure, and in which also the volume for injection hole C has reached the next pre-determined volume criterion, and at which the control unit has therefore closed the three-way valve for the supply also to this injection hole.
  • injection hole F in contrast, the maximum pressure has been reached without the volume reaching the pre-determined volume criterion.
  • the three-way valve 4 from the distribution pipe 2 to this injection hole is held open for a pre-determined duration in order to maintain the pressure (30 bar) in the grouting mix in the injection hole.
  • Figure 9 shows that when the pre-determined retention time has passed, also the three-way valve 4 to this injection hole is closed, and the injection pipe to the injection hole F is disconnected during the continued process, and that the pressure in the distribution pipe 2 is subsequently reduced before the injection is resumed and the three-way valves 4 for the supply of grouting mix from the distribution pipe 2 is reopened for the injection pipes that run to the injection holes B, C and G. Also the disconnected injection pipe 3 that was used for the injection hole F is subsequently rinsed clean.
  • Figure 10 shows that the next pre-determined volume, a total injected volume of 300 litres per injection hole, has been reached for injection holes B and C during the continued injection.
  • the control unit 11 in this condition has, with the aid of the regulators 8, closed the three-way valves 4 for these two injection holes such that no grouting mix can be supplied to these.
  • the maximum pressure of 30 bar has been reached for injection hole G, and the pressure has been maintained during the pre-determined duration for this injection hole, after which also the three-way valve 4 to this injection hole has been closed, and the injection pipe has been disconnected such that it can be rinsed clean.
  • Figure 11 shows the condition in which the maximum pressure of 30 bar has again been reached, and in this case also a new pre-determined volume criterion, a total injected volume of 400 litres, has been achieved for injection hole C.
  • the pressure has been maintained for the pre-determined duration, after which also the three-way valve 4 to this injection hole has been closed, and the injection pipe 3 has been disconnected such that it can be rinsed clean.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Structural Engineering (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)

Claims (11)

  1. Ein Verfahren zum Injizieren von Gesteins- oder Bodenmaterial, wobei Vergussmaterial aus einer gemeinsamen Förderpumpe (1) gleichzeitig durch mehrere Injektionsrohre (3) zu mehreren Injektionslöchern gepumpt wird, und wobei zur Förderung zu jedem der Einspritzlöcher (A-G) mit Hilfe einer Steuereinheit (11) zumindest der Druck (10) und das injizierte Volumen (9) überwacht und individuell gemessen werden, dadurch gekennzeichnet, dass auch die Dauer der Einspritzung in ein Einspritzloch für jedes der Einspritzlöcher (A-G) mittels der Steuereinheit (11) überwacht wird, und dass die Steuereinheit (11) basierend auf Stoppkriterien, die für irgendeinen von einem maximalen Druck (10), einem maximalen Einspritzvolumen (9) oder einer maximalen Einspritzzeit, die für die Einspritzung eines der Einspritzlöcher (A-G) spezifiziert sind, erreicht wurde, eine Ventilanordnung (4) so regelt, dass der Einspritzleitung (3), die zu dem betreffenden Einspritzloch (A-G) führt, keine Vergussmasse mehr zugeführt wird, und stattdessen eine Wasserleitung (6) für die Wasserversorgung der Ventilanordnung (4) und das Injektionsrohr (3) verbindet, um diese sauber zu spülen.
  2. Das Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass ein Zwischengrenzwert für das eingespritzte Volumen (9) eingegeben wird, und wobei die Steuereinheit (11) eingerichtet ist, die Einspritzung für das Einspritzloch (A-G), für das der Zwischengrenzwert erreicht wurde, ohne dass einer der Stoppkriterienwerte erreicht wurde, vorübergehend zu unterbrechen.
  3. Das Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass wenn das Stoppkriterium für einen Maximaldruck in einem Einspritzloch (A-G) erreicht ist, dieser Druck in dem Einspritzloch von der Steuereinheit für die Dauer einer vorbestimmten Druckbeaufschlagungsdauer aufrechterhalten wird.
  4. Das Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass wenn das Stoppkriterium für ein maximales Volumen in einem Einspritzloch (A-G) erreicht ist, der Druck in diesem Einspritzloch von der Steuereinheit für die Dauer von einer vorbestimmten Druckphase gehalten wird.
  5. Das Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass wenn ein vorbestimmter Maximaldruck erreicht ist, die Steuereinheit die Pumpe stoppt und die Ventilanordnung (4) während einer vorbestimmten Dauer zu den Einspritzlöchern, die aufgrund des Erreichens eines mittleren Grenzvolumenwertes nicht geschlossen wurden, offen hält, und nach der vorgegebenen Zeitdauer die offengehaltenen Ventilanordnungen geschlossen werden und danach der Druck abgebaut wird und die Einspritzung in Einspritzlöcher, die aufgrund des Erreichens des mittleren Grenzvolumenwertes geschlossen waren, wieder aufgenommen wird.
  6. Eine Vorrichtung zur Injektion von Gesteins- oder Bodenmaterial, wobei die Anordnung so angepasst ist, dass sie in der Lage ist, durch die eine mit mehreren Injektionsrohren (3) verbundenen Vergussmaterialpumpe (1) aufweisende Anordnung gleichzeitig mehrere Injektionslöcher (A-G) zu injizieren, von den Injektionsrohren (3) jedes mit einem Einspritzloch (A-G) für die gleichzeitige Zufuhr von Vergussmasse zu den angeschlossenen Einspritzlöchern (A-G) verbunden ist, und dass die Anordnung für jedes Einspritzrohr (3) auch einen Drucksensor (10) und einem Durchflussmesser (9), die mit einer Überwachungsanordnung oder Steuereinheit (11) verbunden sind, aufweist, dadurch gekennzeichnet, dass die Anordnung ferner einen Zeitmesser umfasst, um die Dauer zu erfassen, während der Vergussmasse durch die Einspritzleitung (3) dem Einspritzloch (A-G) zugeführt wird, und dass die Steuereinheit (11) eingerichtet ist, eine Wasserleitung (6) durch eine Ventilanordnung (4) für die Zufuhr von Spülwasser zum Einspritzrohr (3) zu verbinden, wenn die Steuereinheit (11), basierend darauf, dass Stoppkriterien, die für irgendeinen von einem maximalen Druck (10), einem maximalen Einspritzvolumen (9) oder einer maximalen Einspritzzeit spezifiziert sind, für das Einspritzen eines Einstritzlochs (A-G) erreicht wurden, und die Steuereinheit (11) ausgebildet ist, um das Injektionsrohr (3) vom dem betreffenden Injektionsloch (A-G) zu trennen.
  7. Die Anordnung nach Anspruch 6, dadurch gekennzeichnet, dass die Überwachungsanordnung oder Steuereinheit (11) ausgebildet ist, um für jedes der Injektionsrohre (3) und Injektionslöcher (A-G) den Druck und das eingespritzte Volumen des Vergussmaterials, das zugeführt wurde, aufzuzeichnen, und ein Zwischengrenzwert für das Einspritzvolumen (9) in die Steuereinheit (11) eingegeben wurde, und welche Steuereinheit (11) für den Fall, dass der Zwischengrenzwert, der eingegeben wurde, erreicht wurde, ohne dass einer der Stoppkriterienwerte erreicht wird, eingerichtet ist, um die Einspritzung in das Einspritzloch (A-G), für das der Zwischengrenzwert erreicht wurde, vorübergehend zu unterbrechen.
  8. Die Anordnung nach Anspruch 7, dadurch gekennzeichnet, dass die Überwachungsanordnung oder Steuereinheit mit mehreren Zwischengrenzwerten für das eingespritzte Volumen versehen ist und eingerichtet ist, die Einspritzung in das Einspritzloch (A-G) zeitweise zu unterbrechen, wenn jeder der Zwischengrenzwerte erreicht wurde.
  9. Die Anordnung nach einem der Ansprüche 6-8, dadurch gekennzeichnet, dass die Überwachungsanordnung oder Steuereinheit eingerichtet ist, wenn ein vorbestimmter Maximaldruck erreicht worden ist, die Pumpe zu stoppen und die Ventilanordnung (4) während einer vorbestimmten Dauer zu den Einspritzlöchern, die aufgrund des Erreichens eines mittleren Zwischengrenzwertes nicht geschlossen wurden, offen zu halten und nach der vorbestimmten Dauer die Ventilanordnungen, die offengehalten worden sind, zu schließen und danach den Druck zu reduzieren und die Einspritzung in Einspritzlöcher, die aufgrund des Erreichens des Grenzvolumengrenzwertes geschlossen waren, wieder aufzunehmen.
  10. Die Anordnung nach einem der Ansprüche 6-9, dadurch gekennzeichnet, dass die Pumpe (1) eingerichtet ist, um den Injektionsrohren (3) durch ein Verteilungsrohr (2) Vergussmasse zuzuführen, und dass jedes Injektionsrohr (3) durch die von der Steuereinheit (11) gesteuerte Ventilanordnung (4) mit dem Verteilerrohr (2) verbunden ist, so dass die Einspritzung durch jedes der Einspritzrohre zugelassen oder unterbrochen werden kann.
  11. Die Anordnung nach einem der Ansprüche 6-10, dadurch gekennzeichnet, dass die Ventilanordnung (4) ein Dreiwegeventil ist, das dazu eingerichtet ist, auch die Wasserleitung (6) an das Verteilerrohr (2) anschließen zu können um dieses mit Spülwasser zu versorgen
EP16206348.1A 2015-12-22 2016-12-22 Verfahren und anordnung zur injektion von gestein und bodenmaterial Not-in-force EP3184732B1 (de)

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EP18214578.9A EP3492697A1 (de) 2015-12-22 2016-12-22 Verfahren und vorrichtung zur injektion von gesteins- und erdbodenmasse

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SE1551697A SE541021C2 (sv) 2015-12-22 2015-12-22 Förfarande och anordning vid injektering av berg- eller jordmassa

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EP3184732A1 EP3184732A1 (de) 2017-06-28
EP3184732B1 true EP3184732B1 (de) 2019-01-02

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EP16206348.1A Not-in-force EP3184732B1 (de) 2015-12-22 2016-12-22 Verfahren und anordnung zur injektion von gestein und bodenmaterial

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CN113513349B (zh) * 2021-07-20 2023-06-20 淮北市平远软岩支护工程技术有限公司 一种适用于冲击地压巷道稳压胶结的注浆锚杆稳压装置
CN114352328A (zh) * 2022-01-06 2022-04-15 徐州徐工基础工程机械有限公司 一种钻注锚台车注浆系统及其控制方法

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FR2084885A5 (de) 1970-03-19 1971-12-17 Atlas Copco Ab
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SE541021C2 (sv) 2019-03-12
DK3184732T3 (en) 2019-04-23
SE1551697A1 (sv) 2017-06-23
EP3184732A1 (de) 2017-06-28
EP3492697A1 (de) 2019-06-05

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