CN217872796U - Rock stratum shield slip casting system - Google Patents
Rock stratum shield slip casting system Download PDFInfo
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- CN217872796U CN217872796U CN202222400715.9U CN202222400715U CN217872796U CN 217872796 U CN217872796 U CN 217872796U CN 202222400715 U CN202222400715 U CN 202222400715U CN 217872796 U CN217872796 U CN 217872796U
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Abstract
The utility model relates to a rock stratum shield slip casting system, include: the pulp storage device comprises a first pulp storage tank and a second pulp storage tank, and is used for preparing and storing the first pulp and the second pulp; the grouting device comprises a first grouting pump, a second grouting pump and a grouting mixer, wherein the first grouting pump and the second grouting pump are communicated with a first grouting tank and a second grouting tank and are used for pumping the first grouting liquid and the second grouting liquid into a first grouting pipe and a second grouting pipe; the water storage device is communicated with the first slurry storage tank and the main grouting pipe; the weighing device comprises a first weighing device and a second weighing device, and is arranged at the bottom of the first and second slurry storage tanks. The utility model discloses a this slip casting system pours into the mixed thick liquid of high viscosity into to the excavation clearance after, can make shield structure soil cabin atmospheric pressure stabilize to enough arrange excavation face front groundwater and the seepage flow passageway that the shutoff rear came water in order to control groundwater, prevents that the screw machine from spouting, reduces the sediment that leaks, promotes the efficiency of construction.
Description
Technical Field
The utility model relates to a slip casting technical field, concretely relates to rock stratum shield slip casting system.
Background
In the shield tunneling process, in order to meet the tunneling and excavating requirements of the shield, the excavating diameter of a shield cutter head is usually slightly larger than the outer diameters of a shield body and pipe pieces, the shield body is generally in a tapered structure with a large front part and a small back part, and an excavating gap is formed in the shield due to the fact that the excavating diameter of the cutter head is larger than the outer diameter of the shield body. The surrounding rock in the rock stratum has good self-stability, and the surrounding rock around the shield body has small convergence degree, so that a gap exists between the shield body and the surrounding rock. After the shield forms an excavation gap in a hard rock stratum, water from the rear enters a shield soil chamber along the channel, so that the spiral machine gushes and leaks slag, and the construction efficiency is seriously influenced. In addition, the shield soil cabin pressure maintaining gas leakage amount is increased due to bed rock cracks in the excavation gap, the pressure of the shield soil cabin is difficult to maintain, and the effects of draining front stratum underground water and reducing gushing cannot be achieved.
The existing methods for slowing down the gushing and slag leakage in the shield construction in China at present mainly comprise two types: 1. performing targeted reconstruction on a spiral conveyer of the shield; 2. bentonite or high molecular polymer is used for improving the slag. However, both the two methods have certain disadvantages, the secondary recycling of the shield is influenced and the manufacturing cost is increased by modifying the shield screw machine, and the using effect is limited by geological factors and construction level. The bentonite or high molecular polymer is adopted to improve the consistency state and the water stopping performance of the slag soil, and particularly when the groundwater quantity is large or the pressure bearing performance is achieved, the conventional slag soil improvement method cannot solve the problem of gushing and slag leakage.
Therefore, it is important to provide a new grouting system suitable for rock strata, which can control underground water, prevent the gushing of a screw machine, reduce slag leakage and improve construction efficiency by stabilizing the air pressure of a shield soil bin.
SUMMERY OF THE UTILITY MODEL
In view of prior art's is not enough, the utility model discloses a main objective provides a rock stratum shield slip casting system to shield among the solution prior art and shield the increase of gas leakage volume of soil compartment pressurize gas, shield the soil compartment pressure and be difficult to keep, can't reach and drive the place ahead stratum groundwater, cause the screw machine to gush the slag leakage scheduling problem.
The technical scheme of the utility model as follows:
a rock formation shield grouting system comprising:
the slurry storage device comprises a first slurry storage tank and a second slurry storage tank which are respectively used for preparing and storing first slurry and second slurry;
the grouting device comprises a first grouting pump, a second grouting pump and a grouting mixer, wherein the first grouting pump and the second grouting pump are respectively communicated with the first grout storage tank and the second grout storage tank and are used for pumping first grout and second grout into a first grouting pipe and a second grouting pipe, and the grouting mixer is connected with grout outlets of the first grouting pipe and the second grouting pipe and is used for mixing the first grout and the second grout and injecting the mixed grout into a shield excavation gap through a main grouting pipe;
the water storage device is communicated with the first grout storage tank, is used for pumping water to the first grout storage tank to adjust the concentration of the first grout, is communicated with the main grouting pipe, and is used for pumping water to the grouting mixer, the first grouting pipe and the second grouting pipe to wash the grouting pipeline;
the weighing device comprises a first weighing device and a second weighing device, which are respectively arranged at the bottoms of the first slurry storage tank and the second slurry storage tank and are used for displaying the weight of the slurry in the first slurry storage tank and the second slurry storage tank in real time.
Preferably, the slip casting mixer is a three-way mixer and is provided with a first inlet, a second inlet and an outlet, the first inlet is connected with the slurry outlet of the first slip casting pipe, the second inlet is connected with the slurry outlet of the second slip casting pipe, and the outlet is connected with the slurry inlet of the main slip casting pipe.
Preferably, the water storage device comprises a water tank which is communicated with the first slurry storage tank through a first water injection pipe and communicated with the main slurry injection pipe through a second water injection pipe, and a water outlet of the second water injection pipe is connected between the outlet and a slurry outlet of the main slurry injection pipe.
Preferably, a first water suction pump is installed on the first water injection pipe, and a second water suction pump is installed on the second water injection pipe.
Preferably, install first stagnant water ball valve between the grout outlet of export and main slip casting pipe, the second stagnant water ball valve is installed to the delivery port of second water injection pipe, just first stagnant water ball valve sets up the low reaches at second stagnant water ball valve.
Preferably, the first grouting pipe and the second grouting pipe are respectively provided with a first electromagnetic flow meter and a second electromagnetic flow meter, and are respectively arranged at the downstream of the first grouting pump and the downstream of the second grouting pump.
Preferably, a third electromagnetic flowmeter is installed on the first water injection pipe and is installed at the downstream of the first water suction pump.
Preferably, a first pressure gauge and a second pressure gauge are respectively installed on the first grouting pipe and the second grouting pipe, and the first pressure gauge and the second pressure gauge are respectively installed at the downstream of the first electromagnetic flowmeter and the downstream of the second electromagnetic flowmeter.
Preferably, a third pressure gauge is installed on the main grouting pipe, and the third pressure gauge is installed downstream of the grouting mixer.
Preferably, the grout outlet of the main grouting pipe corresponds to the radial grouting hole of the middle shield.
The utility model discloses beneficial effect for prior art is: the utility model provides a rock stratum shield slip casting system, this rock stratum shield slip casting system pass through the slip casting device and pour into the mixed thick liquid of high viscosity into to the excavation clearance after, can make shield earth cabin atmospheric pressure stable enough discharge excavation face front groundwater and the seepage flow passageway that the shutoff rear came water in order to control groundwater, prevent that the screw machine from gushing, reduce the sediment that leaks, promote the efficiency of construction. Specifically, at least the following practical effects are obtained:
the utility model discloses the water storage device that sets up can guarantee the slip casting quality according to the concentration of the first thick liquid of stratum characteristics accurate adjustment on the one hand, and on the other hand can be used for scouring away remaining slurry that condenses in the slip casting pipe to prevent that the thick liquid from solidifying and stopping up the slip casting pipeline, this rock stratum shield of being convenient for slip casting system continues to use.
The utility model discloses store up thick liquid tank bottom at first thick liquid storage tank and second and all add the ware of weighing, make things convenient for first thick liquid and second thick liquid to dispose and real time monitoring first thick liquid and second thick liquid consumption proportion and weight according to the proportion.
The utility model discloses a monitoring devices carries out real-time supervision and control to the grouting volume and the slip casting pressure of first thick liquid and second thick liquid, realizes accurate control and the regulation to first thick liquid and second thick liquid injection volume, improves the precision of the synchronous slip casting of biliquid, guarantees excavation clearance thick liquid slip casting quality, makes to have fine sealed and stagnant water effect behind the excavation clearance slip casting.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic view of an overall structure of a grouting system according to an embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of the weighing and water storage device of FIG. 1;
FIG. 3 is a schematic diagram showing a partial enlarged view of the structure of the grouting mixer in FIG. 1;
fig. 4 is the utility model relates to a slip casting system slip casting flow diagram of embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are described in further detail below with reference to the embodiments and the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
It is to be understood that the terms "comprises/comprising," "consists of … …," or any other variation, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, apparatus, process, or method if desired. Without further limitation, an element defined by the phrases "comprising/including … …", "consisting of … …" does not exclude the presence of additional like elements in a product, apparatus, process or method that includes the element.
It will be further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship illustrated in the drawings for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device, component, or structure so referred to must have a particular orientation, be constructed in a particular orientation, or be operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The utility model provides a rock stratum shield slip casting system pours into the mixed thick liquid of high viscosity back into the excavation clearance, can make shield earth cabin atmospheric pressure stabilize to enough arrange excavation face front groundwater and the seepage flow passageway that the shutoff rear came water in order to control groundwater, can prevent that the screw machine from gushing, reduces the sediment that leaks, promotes the efficiency of construction.
The implementation of the present invention will be described in detail below with reference to preferred embodiments.
The utility model provides a rock stratum shield slip casting system, as shown in fig. 1, fig. 2, including storing up thick liquid device, slip casting device, water storage device 500 and weighing device.
Specifically, the slurry storage device comprises a first slurry storage tank 100 and a second slurry storage tank 200, wherein the first slurry storage tank 100 is used for preparing and storing the first slurry 102, and the second slurry storage tank 200 is used for preparing and storing the second slurry 202.
The grouting device comprises a first grouting pump 101, a second grouting pump 201 and a grouting mixer 300, wherein the first grouting pump 101 is communicated with the first slurry storage tank 100 and is used for pumping first slurry 102 into the first grouting pipe 103; a second grouting pump 201 is communicated with the second slurry tank 200 for pumping a second slurry 202 into a second grouting pipe 203; the grouting mixer 300 is connected to outlets of the first grouting pipe 103 and the second grouting pipe 203, and is used for mixing the first grout 102 and the second grout 202 and injecting the mixed grout into the shield excavation gap 900 through the main grouting pipe 400.
The water storage device 500 is communicated with the first grout tank 100 for pumping water to the first grout tank 100 to adjust the concentration of the first grout 102, and the water storage device 500 is simultaneously communicated with the main grouting pipe 400 for pumping water to the grouting mixer 300, the first grouting pipe 103 and the second grouting pipe 203 to flush the grouting pipeline.
The weighing device comprises a first weigher 104 and a second weigher 204, wherein the first weigher 104 is arranged at the bottom of the first pulp storage tank 100 and is used for displaying the weight of the pulp in the first pulp storage tank 100 in real time, and the second weigher 204 is arranged at the bottom of the second pulp storage tank 200 and is used for displaying the weight of the pulp in the second pulp storage tank 200 in real time.
Continuing to refer to fig. 2, the utility model discloses a weighing device carries out real-time supervision and control to the weight of first thick liquid 102 and second thick liquid 202, realizes the accurate control and the regulation to first thick liquid 102 and second thick liquid 202 injection volume, improves the precision of the synchronous slip casting of biliquid.
The first slurry 102 comprises the following components in parts by weight: 40 to 50 percent of calcium bentonite, 20 to 30 percent of sodium bentonite, 25 to 35 percent of slaked lime, 3 to 5 percent of cement and 0.5 to 1.5 percent of cellulose.
The first slurry 102 is prepared by stirring the materials and water according to the mixture ratio, wherein the mass ratio of the materials to the water is 0.75-1.5: 1.
the second slurry 202 specifically contains a sodium silicate water glass solution.
Just gelatinize at very short time after above-mentioned first thick liquid 102 and second thick liquid 202 mix, can only pour and mix now, use the utility model discloses a slip casting system can solve this problem well to the mixed thick liquid of excavation clearance after mixing has very high viscosity, has fine sealed and stagnant water effect after filling this mixed thick liquid in the excavation clearance 900.
It should be noted that the grouting system of the present invention is particularly suitable for the above-mentioned cement paste and water glass paste, and certainly also suitable for grouting slurry of other components.
Further, referring to fig. 3, the grouting mixer 300 is a three-way mixer having a first inlet 301, a second inlet 302 and an outlet 303, the first inlet 301 is connected to the grout outlet of the first grouting pipe 103, the second inlet 302 is connected to the grout outlet of the second grouting pipe 203, and the outlet 303 is connected to the grout inlet of the main grouting pipe 400.
The utility model discloses a set up the thick liquid that two entries received two slip casting pipes respectively, can avoid the thick liquid to take place to condense well before mixing the stirring, two thick liquids mix the stirring rapidly in slip casting blender 300, in time pour into the excavation clearance 900 into.
Preferably, the three-way mixer is provided with a mixing pump, the first slurry 102 and the second slurry 202 are mixed by the mixing pump, and the mixed slurry is filled into the excavation gap 900 through the middle shield grouting hole 800 by a certain grouting pressure.
Referring again to fig. 2, further, the water storage device 500 includes a water tank which is communicated with the first slurry storage tank 100 through a first water injection pipe 501, the water tank is communicated with the main slurry injection pipe 400 through a second water injection pipe 502, and a water outlet of the second water injection pipe 502 is connected between the outlet 303 and a slurry outlet of the main slurry injection pipe 400. It should be understood that the connection of the outlet of the second water injection pipe 502 between the outlet 303 and the outlet of the main grout pipe 400 is to prevent the flushing water from flowing into the excavated gap 900.
On one hand, the water tank is communicated with the first slurry storage tank 100 through the first water injection pipe 501, and the water tank can accurately adjust the concentration of the first slurry 102 according to the characteristics of the stratum, so that the grouting quality is ensured; on the other hand, the second water injection pipe 502 is communicated with the main grouting pipe 400 and used for flushing residual condensed slurry in the grouting pipeline so as to prevent the slurry from solidifying and blocking the grouting pipeline, and the rock stratum shield grouting system can be conveniently used continuously.
Preferably, a first water injection pipe 501 is provided with a first water suction pump 503, and a second water injection pipe 502 is provided with a second water suction pump 504.
Preferably, the third electromagnetic flowmeter 505 is installed on the first water injection pipe 501, and the third electromagnetic flowmeter 505 is installed downstream of the first water suction pump 503, so as to facilitate real-time monitoring of the water injection amount in the first water injection pipe 501.
Further, with continued reference to fig. 3, a first water stop ball valve 304 is installed between the outlet 303 and the grout outlet of the main grouting pipe 400, a second water stop ball valve 506 is installed at the water outlet of the second water injection pipe 502, and the first water stop ball valve 304 is disposed downstream of the second water stop ball valve 506.
Open first stagnant water ball valve 304 when needing the slip casting, close second stagnant water ball valve 506 simultaneously, close first stagnant water ball valve 304 when not the slip casting, open second stagnant water ball valve 506 simultaneously to block main slip casting pipe 400, prevent the thick liquid backward flow, and be convenient for wash the slip casting pipeline through second water injection pipe 502.
Further, a first electromagnetic flow meter 105 is installed on the first grouting pipe 103, a second electromagnetic flow meter 205 is installed on the second grouting pipe 203, the first electromagnetic flow meter 105 is installed at the downstream of the first grouting pump 101, so that the grouting amount of the first grout 102 can be monitored in real time, and the second electromagnetic flow meter 205 is installed at the downstream of the second grouting pump, so that the grouting amount of the second grout 202 can be monitored in real time.
Further, referring to fig. 1, a first pressure gauge 106 is installed on the first grouting pipe 103 to facilitate monitoring of grouting pressure of the first grout 102, a second pressure gauge 206 is installed on the second grouting pipe 203 to facilitate monitoring of grouting pressure of the second grout 202, and referring to fig. 3, a third pressure gauge 305 is installed on the main grouting pipe 400 to facilitate monitoring of grouting pressure of the mixed grout.
Further, referring to fig. 3, a third pressure gauge 305 is installed on the main grouting pipe 400 to facilitate monitoring of the mixed slurry grouting pressure.
The utility model discloses a first electromagnetic flowmeter 105, second electromagnetic flowmeter 205, first pressure gauge 106 and second pressure gauge 206 carry out real-time supervision and control to the injected quantity and the slip casting pressure of first thick liquid 102 and second thick liquid 202, the realization is to the accurate control and the regulation of first thick liquid 102 and second thick liquid 202 injected quantity, and monitor the slip casting pressure of mixing the thick liquid through third pressure gauge 305, improve the precision of the synchronous slip casting of biliquid, guarantee to excavate clearance and mix thick liquid slip casting quality, have fine sealed and stagnant water effect after making excavation clearance 900 slip casting.
Preferably, a first pressure gauge 106 is installed downstream of the first electromagnetic flow meter 105, a second pressure gauge 206 is installed downstream of the second electromagnetic flow meter 205, and a third pressure gauge 305 is installed downstream of the slip casting mixer 300.
Further, the grout outlet of the main grout pipe 400 corresponds to the middle shield radial grout hole 800. The mixed slurry in the main grouting pipe 400 is filled into the shield excavation gap through the grouting holes 800.
The working principle is as follows:
after first slurry 102 and second slurry 202 are respectively manufactured in a first slurry storage tank 100 and a second slurry storage tank 200 according to a certain proportion, a second water stop ball valve 506 is closed, a first water stop ball valve 304 is opened, first slurry pumps 101 and second slurry pumps 201 pump the first slurry 102 and the second slurry 202 from the corresponding slurry storage tanks respectively into a first slurry injection pipe 103 and a second slurry injection pipe 203, the grouting amount and the grouting pressure of the first slurry 102 and the second slurry 202 are respectively monitored through a first electromagnetic flow meter 105, a second electromagnetic flow meter 205, a first pressure meter 106 and a second pressure meter 206, meanwhile, the weight of the slurry in the first slurry storage tank 100 and the weight of the slurry in the second slurry storage tank 200 are respectively monitored through a first weighing device 104 and a second weighing device 204, then the first slurry 102 and the second slurry 202 are mixed through a three-way mixer to form gap mixed slurry, a third slurry pressure meter 305 is installed behind the three-way mixer to monitor the mixed slurry pressure, and the mixed slurry pressure is generally controlled at 0.2-0.4MPa.
In the grouting process, the water in the water tank is pumped into the first grout storage tank 100 by using the first water pump 503, the water flow rate is displayed by using the third electromagnetic flowmeter 505, the concentration of the first grout 102 is conveniently adjusted in real time according to the characteristics of the stratum, finally, the mixed grout is injected into the excavation gap 900 through the middle shield radial grouting holes 800, and the grouting sequence is that the grouting is performed from the top to the grouting holes 800 on the two sides in sequence.
After grouting is completed, the first water stop ball valve 304 is closed, the second water stop ball valve 506 is opened, water in the water tank is pumped into the second water injection pipe 502 by using the second water suction pump 504, the second water injection pipe 502 conveys flushing water to the grouting mixer 300, and further conveys the flushing water to the first grouting pipe 103 and the second grouting pipe 203 to flush grouting pipelines so as to prevent blocking of the grouting pipelines.
Before grouting the excavation gap, sequentially and continuously arranging at least three annular water stop hoop rings at the tail part of the shield tunneling machine, then injecting mixed slurry of first slurry 102 and second slurry 202 into the excavation gap at the back part of the segment by adopting the grouting system for the segment in the range beyond the five rings of the shield tunneling machine tail, and injecting the mixed slurry into the back part of the segment through a preset grouting hole 800 on the segment.
Referring to fig. 4, the specific construction process is as follows:
s1: preparing mixed grout for grouting in the excavation gap, namely the first grout 102 and the second grout 202, or directly preparing grout in the first grout tank 100 and the second grout tank 200.
S2: the first grout 102 and the second grout 202 are respectively stored in the first grout storage tank 100 and the second grout storage tank 200, are sent into the grouting mixer 300 through a grouting pump to be mixed and stirred into mixed grout, and then the mixed grout is filled into the excavation gap through the reserved grouting hole 800 of the middle shield by certain grouting pressure.
S3: and calculating the set pressure value of the shield soil chamber according to the underground water level so as to drain the underground water. The water pressure at the bottom of the excavation surface can be generally plus 0.2bar.
S4: and checking whether the air pressure of the shield soil cabin reaches a set value and is stable.
If the sealing effect is poor and the air pressure cannot be maintained, the underground water is large and the slag leakage is serious, the injection amount and the injection pressure of the grouting material are increased continuously through the middle shield grouting hole, and the polyurethane is injected into the nearest ring pipe piece at the tail of the shield until the set air pressure is reached and the stability is achieved. And if the air pressure reaches a set value and is stable, keeping the shield pressure maintaining system started for tunneling.
It will be readily appreciated by those skilled in the art that the above-described preferred embodiments may be freely combined, superimposed, without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A rock formation shield grouting system, comprising:
the slurry storage device comprises a first slurry storage tank and a second slurry storage tank which are respectively used for preparing and storing first slurry and second slurry;
the grouting device comprises a first grouting pump, a second grouting pump and a grouting mixer, wherein the first grouting pump and the second grouting pump are respectively communicated with the first grout storage tank and the second grout storage tank and are used for pumping first grout and second grout into a first grouting pipe and a second grouting pipe, and the grouting mixer is connected with grout outlets of the first grouting pipe and the second grouting pipe and is used for mixing the first grout and the second grout and injecting the mixed grout into a shield excavation gap through a main grouting pipe;
the water storage device is communicated with the first slurry storage tank, is used for pumping water to the first slurry storage tank to adjust the concentration of the first slurry, is communicated with the main grouting pipe, and is used for pumping water to the grouting mixer, the first grouting pipe and the second grouting pipe to flush the grouting pipeline;
the weighing device comprises a first weighing device and a second weighing device, which are respectively arranged at the bottoms of the first slurry storage tank and the second slurry storage tank and are used for displaying the weight of the slurry in the first slurry storage tank and the second slurry storage tank in real time.
2. The shield grouting system for rock strata according to claim 1, wherein the grouting mixer is a three-way mixer having a first inlet, a second inlet and an outlet, the first inlet is connected to the grout outlet of the first grouting pipe, the second inlet is connected to the grout outlet of the second grouting pipe, and the outlet is connected to the grout inlet of the main grouting pipe.
3. The rock formation shield slip casting system of claim 2, wherein the water storage device comprises a water tank in communication with the first mud storage tank through a first water injection pipe and in communication with the main slip casting pipe through a second water injection pipe, and a water outlet of the second water injection pipe is connected between the outlet and a grout outlet of the main slip casting pipe.
4. The rock formation shield grouting system of claim 3, wherein a first water pump is installed on the first water injection pipe, and a second water pump is installed on the second water injection pipe.
5. The rock formation shield grouting system of claim 4, wherein a first water stop ball valve is installed between the outlet and the grout outlet of the main grouting pipe, a second water stop ball valve is installed at the water outlet of the second water injection pipe, and the first water stop ball valve is arranged at the downstream of the second water stop ball valve.
6. The rock formation shield grouting system of claim 1, wherein a first electromagnetic flow meter and a second electromagnetic flow meter are mounted on the first grouting pipe and the second grouting pipe respectively and are mounted downstream of the first grouting pump and the second grouting pump respectively.
7. The shield grouting system for a rock formation according to claim 4, wherein a third electromagnetic flow meter is mounted on the first water injection pipe downstream of the first water suction pump.
8. The rock formation shield grouting system of claim 6, wherein a first pressure gauge and a second pressure gauge are mounted on the first grouting pipe and the second grouting pipe respectively, and are mounted downstream of the first electromagnetic flowmeter and the second electromagnetic flowmeter respectively.
9. A rock formation shield grouting system as claimed in claim 8, wherein a third pressure gauge is mounted on the main grouting pipe, the third pressure gauge being mounted downstream of the grouting mixer.
10. The rock formation shield grouting system of claim 1, wherein the grout outlet of the main grouting pipe corresponds to a middle shield radial grouting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202222400715.9U CN217872796U (en) | 2022-09-09 | 2022-09-09 | Rock stratum shield slip casting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222400715.9U CN217872796U (en) | 2022-09-09 | 2022-09-09 | Rock stratum shield slip casting system |
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| CN217872796U true CN217872796U (en) | 2022-11-22 |
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| CN202222400715.9U Active CN217872796U (en) | 2022-09-09 | 2022-09-09 | Rock stratum shield slip casting system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |