CN116906059A - Grouting pipeline system of shield tunneling machine and shield tunneling machine thereof - Google Patents
Grouting pipeline system of shield tunneling machine and shield tunneling machine thereof Download PDFInfo
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- CN116906059A CN116906059A CN202310967546.3A CN202310967546A CN116906059A CN 116906059 A CN116906059 A CN 116906059A CN 202310967546 A CN202310967546 A CN 202310967546A CN 116906059 A CN116906059 A CN 116906059A
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- grouting
- pipe
- pressure
- pressure sensor
- layer pipe
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- 230000005641 tunneling Effects 0.000 title claims description 25
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 238000011084 recovery Methods 0.000 claims abstract description 5
- 239000007769 metal material Substances 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims description 69
- 239000004568 cement Substances 0.000 claims description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 47
- 238000002347 injection Methods 0.000 claims description 45
- 239000007924 injection Substances 0.000 claims description 45
- 238000007569 slipcasting Methods 0.000 claims description 17
- 230000008093 supporting effect Effects 0.000 claims description 12
- 229920000742 Cotton Polymers 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 6
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000007493 shaping process Methods 0.000 abstract description 4
- 238000010992 reflux Methods 0.000 description 13
- 230000001360 synchronised effect Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
- E21D9/0609—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering with means for applying a continuous liner, e.g. sheets of plastics, between the main concrete lining and the rock
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
Abstract
The invention relates to the field of tunnel construction equipment, and particularly discloses a grouting pipeline system of a shield machine and the shield machine of the grouting pipeline system, wherein the shield machine comprises a grouting part, the grouting part comprises a mortar tank, a mortar stirrer arranged in the mortar tank, a grouting pump communicated with the mortar tank, a first controller for controlling the opening or closing of the grouting pump, a grouting pipeline communicated with the grouting pump, four grouting branches, a control unit, a backflow protection unit and a cleaning recovery system; the grouting pipeline and the grouting branch comprise an inner layer pipe and an outer layer pipe, the inner layer pipe is made of PE materials, the outer layer pipe is made of bendable and deformable metal materials, and the inner layer pipe is coaxially sleeved in the outer layer pipe. In the scheme, the outer layer pipe has very good deformation and shaping capacity, so that the inner layer pipe is synchronously bent, and the inner layer pipe is kept in a slightly bent and non-bending blocking state, so that a grouting pipeline and a grouting branch are kept in a smooth conveying state.
Description
Technical Field
The invention relates to the technical field of tunnel construction equipment, in particular to a grouting pipeline system of a shield tunneling machine and the shield tunneling machine.
Background
When the tunnel is constructed by the shield machine, the shell of the cylinder assembly on the shield machine is the shield, and the shield has a temporary supporting effect on the excavated tunnel section which is not lined yet, bears the pressure of surrounding soil layers, and sometimes bears the groundwater pressure and keeps the groundwater out. This requires that the initial construction section of the tunnel be installed and grouting construction process be performed immediately after the partial tunneling forward of the tunnel.
When the duct piece installation construction is carried out, the duct piece erector can drive the duct piece to stretch, rotate, move and the like, so that the accurate installation and positioning of the duct piece in the duct piece installation stage can be realized, and the inner wall of the shield tunnel and the annular gap outside the duct piece can be formed; then grouting treatment is needed to be carried out between the annular gaps as soon as possible, so that the formation is prevented from generating excessive change, and the safety of surrounding environment is further endangered, so that a grouting hole is reserved through a synchronous grouting system and a duct piece which are self-arranged by a shield machine, and a shield tunneling grouting mode is adopted.
When synchronous grouting is carried out, after the cement slurry is solidified, the strength is improved, but the partial uniformity is possibly insufficient or gaps are possibly generated due to solidification and shrinkage of the cement slurry; the cement slurry in part of the grouting pipeline is solidified in the injection process, so that the measured flow condition in the pipeline is higher, and the actual injection quantity and the designed injection quantity of the cement slurry are deviated, so that the secondary grouting quantity and the secondary grouting times after synchronous grouting are obviously improved, the tunneling operation of a shield machine is not facilitated, and the construction efficiency of the whole tunnel is affected seriously; and simultaneously, the grouting precision and grouting efficiency in secondary grouting can be influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a grouting pipeline system of a shield machine and the shield machine thereof, which are used for solving the problems that the grouting precision and grouting efficiency are affected due to the fact that the measured flow condition in a pipeline is higher and the actual injection quantity of the cement slurry is deviated from the designed injection quantity due to the fact that the cement slurry is easy to solidify in the grouting pipeline.
In order to achieve the above object, the basic scheme of the present invention is as follows: the utility model provides a shield constructs quick-witted slip casting pipe system, includes slip casting portion, and slip casting portion includes:
a mortar tank;
a mortar stirrer installed in the mortar tank;
a grouting pump communicated with the mortar tank;
a first controller for controlling the grouting pump to be opened or closed;
a grouting pipeline communicated with the grouting pump;
one end of each grouting branch is communicated with a grouting pipeline, and one end of each grouting branch principle grouting pipeline is communicated with grouting heads one by one;
the control unit comprises a PLC controller, a pressure display, a first pressure sensor, a second pressure sensor, a third pressure sensor and a fourth pressure sensor, wherein the first pressure sensor is positioned between a mortar tank and a grouting pump, the second pressure sensor is positioned between the grouting pump and a grouting pipeline, the third pressure sensor is positioned between the grouting pipeline and a grouting branch, and the fourth pressure sensor is positioned at a grouting head; the first controller, the pressure display, the first pressure sensor, the second pressure sensor, the third pressure sensor and the fourth pressure sensor are electrically coupled with the PLC controller;
the grouting pipeline and the grouting branch comprise an inner layer pipe and an outer layer pipe, the inner layer pipe is made of PE materials, the outer layer pipe is made of bendable and deformable metal materials, and the inner layer pipe is coaxially sleeved in the outer layer pipe.
The technical principle of the invention is as follows: the PLC can judge the stock of the cement slurry in the mortar tank according to the data condition of the first pressure sensor, and when the stock of the cement slurry is more, the pressure data at the first pressure sensor is larger; when the stock of the cement slurry is less, the pressure data at the first pressure sensor is smaller, so that the stock of the cement slurry can be conveniently and timely obtained, and the cement slurry in the mortar tank can be timely replenished; when grouting is performed, the PLC can compare pressure history data measured by the second pressure sensor, the third pressure sensor and the fourth pressure sensor, further judge whether the cement slurry has local pressure change, and rapidly remove faults or plugging parts, timely process corresponding problems and avoid affecting other structures of a grouting pipeline system.
Because the grouting pipeline and the grouting branch are both composed of the inner layer pipe and the outer layer pipe, when the grouting pipeline and the grouting branch can be slightly bent according to the requirement of a grouting position, the outer layer pipe has very good deformation and shaping capability, so that the inner layer pipe is synchronously bent, the inner layer pipe is kept in a slightly bent and non-bending blocking state, and the grouting pipeline and the grouting branch are kept in a smooth conveying state; meanwhile, as the inner layer pipe is made of PE materials, cement slurry is not easy to adhere to the inner layer pipe, the possibility that a grouting pipeline and a grouting branch are bent and plugged or are solidified and plugged by the cement slurry is reduced, and grouting precision and grouting efficiency can be improved.
Meanwhile, when the inner layer pipe deforms and is pressed onto the inner wall of the outer layer pipe, the outer layer pipe can protect the inner layer pipe, and the inner layer pipe is prevented from being broken and burst under the action of local high pressure.
Further, a reflux protection unit is also included, the reflux protection unit includes:
the first return pipe is communicated with the grouting pipeline, and a first pressure relief valve capable of presetting pressure is arranged between the first return pipe and the grouting pipeline; when the pressure data measured by the second pressure sensor exceeds the preset pressure, the first pressure relief valve is opened to communicate the first return pipe with the grouting pipeline;
the second return pipe is communicated with the grouting branch, and a second pressure relief valve capable of presetting pressure is arranged between the second return pipe and the grouting branch; when the pressure data measured by the third pressure sensor or the fourth pressure sensor exceeds the preset pressure, the second pressure relief valve is opened to communicate the second return pipe with the grouting branch;
the first relief valve and the second relief valve are electrically connected with the PLC, and the first return pipe and the second return pipe are communicated with the mortar tank.
Through the arrangement, when the grouting pump or the grouting head breaks down, when the pressure of the cement slurry in the grouting pipeline or the grouting branch is increased, the pressure data measured by the second pressure sensor, the third pressure sensor and the fourth pressure sensor are increased rapidly, the PLC receives corresponding signals at the moment, and then the first pressure release valve or the second pressure release valve is automatically controlled to be opened, redundant cement slurry in the grouting pipeline or the grouting branch passes through the first return pipe or the second return pipe, and meanwhile, the PLC controls the grouting pump to be closed through the first controller, so that the cement slurry flows back to the mortar tank, the grouting pump, the grouting pipeline, the grouting branch or the grouting head can be protected, and the fault in the grouting pump, the grouting pipeline, the grouting branch or the grouting head can be conveniently checked.
Further, the second return pipe is communicated with the middle part of the first return pipe, and a return pump is arranged between the first return pipe and the mortar tank in a communicated manner.
Through the arrangement, when the pressure data measured by the second pressure sensor, the third pressure sensor and the fourth pressure sensor are rapidly increased, the PLC controller controls the reflux pump to start through the third controller, and the negative pressure of the reflux pump acts on the first reflux pipe and the second reflux pipe, so that the residual cement slurry is fast refluxed, and the grouting pump, the grouting pipeline, the grouting branch or the grouting head can be rapidly protected.
Further, still including wasing recovery system, the high-pressure water injection machine, control the second controller that the high-pressure water injection machine opened or closed and with the water injection pipe of high-pressure water injection machine intercommunication, the one end that the high-pressure water injection machine was kept away from to the water injection pipe communicates between grouting pump and mortar jar, is equipped with first check valve on the one end that the water injection pipe is close to the mortar jar, the position department that the mortar jar is close to the water injection pipe is equipped with the second check valve, second controller, first check valve and second check valve all with PLC controller electric connection.
After grouting is completed, the PLC controller starts the high-pressure water injection machine through the second controller, and meanwhile, the PLC controller controls the first one-way valve to be opened, the second one-way valve to be closed, the first pressure release valve to be opened, the second pressure release valve to be opened and the reflux pump to be started, part of water can be sprayed out from the grouting head to clean the grouting head; pumping high-pressure clean water into a grouting pipeline by the high-pressure water injection machine, and returning the washed wastewater to a mortar tank through a first return pipe, a second return pipe and a return pump, wherein the redundant cement slurry in the grouting pipeline, a grouting branch, the first return pipe and the second return pipe is recovered and can be reused; through the process, the possibility that cement slurry is adhered to the grouting pump, the grouting pipeline, the grouting branch, the grouting head, the first return pipe and the second return pipe can be reduced, so that the grouting pump, the grouting pipeline, the grouting branch and the grouting head are smoother, and the grouting precision is improved.
Further, the first return pipe is located at an end of the grouting pipeline away from the grouting pump at a communication position with the grouting pipeline.
Through above-mentioned setting, first back flow can carry out better protection to grouting pump, slip casting pipeline and slip casting branch road, can follow this slip casting pipeline and slip casting branch road node department and flow back fast when superpressure.
Further, the second return pipe is communicated with the grouting branch and is positioned at one end of the grouting branch close to the grouting head.
Through above-mentioned setting, the second back flow can carry out better protection to slip casting branch road and slip casting head, can follow the node department quick backward flow of this slip casting branch road and slip casting head when superpressure.
Further, the structures of the first return pipe and the second return pipe are consistent with the structure of the grouting pipeline.
Through the arrangement, the first return pipe and the second return pipe also have the properties of bending and shaping and difficult bending and plugging; and the cement slurry is not easy to adhere and solidify, so that the whole grouting pipeline system operates more smoothly.
Further, the outer tube is made of a thin tube of stainless steel, copper or aluminum, and the wall thickness of the outer tube is greater than 5mm and less than 15mm.
Through the arrangement, the thickness of the outer layer pipe is moderate, so that the outer layer pipe has high strength and good bending property.
Further, elastic supporting cotton is clamped between the outer layer pipe and the inner layer pipe, the supporting cotton is cylindrical and coaxially sleeved outside the inner layer pipe, one end of the outer layer pipe is fixedly connected with one end of the inner layer pipe in a fit mode, and the other end of the outer layer pipe is fixedly connected with the other end of the inner layer pipe in a fit mode.
Through the arrangement, the inner layer pipe made of PE material can slightly deform, and the supporting cotton is matched with the inner layer pipe to provide a part of space for stacking cement slurry, so that the inner layer pipe is prevented from being damaged and burst; when the temperature outside the grouting pipeline and the grouting branch is higher than the temperature inside the grouting pipeline and the grouting branch, the supporting cotton can keep the temperature of the cement slurry inside the grouting pipeline and the grouting branch, so that the temperature of the cement slurry outside the grouting pipeline and the grouting branch is reduced, the solidification speed of the cement slurry under corresponding environmental conditions is further reduced, and the possibility that the cement slurry is solidified in the grouting pipeline and the grouting branch is further reduced.
The invention also aims to provide a shield machine, which comprises a shield machine body, a slurry mixing part, a conveying part and a shield machine grouting pipeline system, wherein the slurry mixing part, the conveying part and the grouting part can be sequentially communicated to convey cement slurry.
Through above-mentioned setting, mix thick liquid portion, transport portion and slip casting portion can cooperate, realize the rapid mixing, stirring, transportation and the slip casting to cement thick liquid for when the section of jurisdiction is installed, carry out synchronous slip casting, antiseep and support the tunnel wall.
Drawings
Fig. 1 is a schematic diagram of a grouting pipeline system of a shield tunneling machine in embodiment 1 of the present invention.
Fig. 2 is a cross-sectional view of the grouting line of fig. 1.
Fig. 3 is a schematic diagram of a control unit.
Fig. 4 is a schematic diagram of a part of the structure of a shield tunneling machine according to embodiment 2 of the present invention.
In the above figures: mortar tank 10, mortar mixer 101, second check valve 102, grouting pump 20, grouting line 201, grouting branch 202, grouting head 203, first return pipe 301, first relief valve 302, second return pipe 303, second relief valve 304, return pump 305, high-pressure water injector 40, water injection pipe 401, first check valve 402, water injection branch 403, third check valve 404, inner pipe 501, outer pipe 502, support wool 503, annular seal groove 504, seal ring 505, fixing ring 506, internal thread 507, first pressure sensor 801, second pressure sensor 802, third pressure sensor 803, fourth pressure sensor 804, segment conveying portion 901, slurry stirring portion 902, and conveying portion 903.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, 2 and 3, the embodiment of the present invention provides a grouting pipeline system of a shield tunneling machine, which includes a grouting portion, wherein the grouting portion includes a mortar tank 10, a mortar stirrer 101 installed in the mortar tank 10, a grouting pump 20 communicated with the mortar tank 10, a first controller for controlling the grouting pump 20 to be turned on or off, a grouting pipeline 201 communicated with the grouting pump 20, four grouting branches 202, a control unit, a backflow protection unit and a cleaning recovery system.
As shown in fig. 1, the left ends of the grouting branches 202 are all communicated with a grouting pipeline 201, one ends of the grouting branches 202, which are based on the principle, of the grouting pipeline 201 are all communicated with grouting heads 203 one by one, and switching valves are arranged in the grouting heads 203.
As shown in fig. 2, the backflow protection unit comprises a first backflow pipe 301 communicated with the grouting pipeline 201 and a second backflow pipe 303 communicated with the grouting branch 202, and a first pressure relief valve 302 capable of presetting pressure is arranged between the first backflow pipe 301 and the grouting pipeline 201; when the pressure data measured by the second pressure sensor 802 exceeds the preset pressure, the first pressure relief valve 302 opens to communicate the first return pipe 301 with the grouting pipeline 201; a second relief valve 304 with preset pressure is arranged between the second return pipe 303 and the grouting branch 202; when the pressure data measured by the third pressure sensor 803 or the fourth pressure sensor 804 exceeds the preset pressure, the second relief valve 304 opens to communicate the second return pipe 303 with the grouting branch 202; the second return pipe 303 is communicated with the middle part of the first return pipe 301, a return pump 305 is communicated between the first return pipe 301 and the mortar tank 10, a third controller for controlling the return pump 305 to be opened or closed is arranged on the return pump 305, and the communication part of the first return pipe 301 and the grouting pipeline 201 is positioned at the right end of the grouting pipeline 201; the second return pipe 303 is located at the right end of the grouting branch 202 at the communication point with the grouting branch 202.
As shown in fig. 1, the high-pressure water injection machine 40, the second controller for controlling the high-pressure water injection machine 40 to be opened or closed, and the water injection pipe 401 communicated with the high-pressure water injection machine 40, one end of the water injection pipe 401 far away from the high-pressure water injection machine 40 is communicated between the grouting pump 20 and the mortar tank 10, a first one-way valve 402 is arranged at one end of the water injection pipe 401 close to the mortar tank 10, and a second one-way valve 102 is arranged at the position of the mortar tank 10 close to the water injection pipe 401.
As shown in fig. 1 and 3, the control unit includes a PLC controller, a touch display, a first pressure sensor 801 located between the mortar tank 10 and the grouting pump 20, a second pressure sensor 802 located between the grouting pump 20 and the grouting line 201, a third pressure sensor 803 located between the grouting line 201 and the grouting branch 202, and a fourth pressure sensor 804 located at the grouting head 203; the first pressure sensor 801 is positioned on the left side of the second one-way valve 102, and the switch valve, the first controller, the pressure display, the first pressure sensor 801, the second pressure sensor 802, the third pressure sensor 803, the fourth pressure sensor 804, the first pressure relief valve 302, the second pressure relief valve 304, the third controller, the second controller, the first one-way valve 402 and the second one-way valve 102 are electrically coupled with the PLC controller; the touch display can realize pressure data, and can also input control instructions to the PLC controller and preset pressure data of the first pressure sensor 801, the second pressure sensor 802, the third pressure sensor 803 and the fourth pressure sensor 804 in a touch control mode.
As shown in fig. 2, each of the grouting line 201, the grouting branch 202, the first return pipe 301 and the second return pipe 303 includes an inner pipe 501 and an outer pipe 502, the inner pipe 501 is made of PE material, the outer pipe 502 is made of bendable deformed metal material, and the outer pipe 502 is made of copper or aluminum thin pipe; the inner layer pipe 501 is coaxially sleeved in the outer layer pipe 502, and the wall thickness of the outer layer pipe 502 is larger than 8mm; elastic supporting cotton 503 is clamped between the outer layer pipe 502 and the inner layer pipe 501, the supporting cotton 503 is cylindrical and coaxially sleeved outside the inner layer pipe 501, one end of the outer layer pipe 502 is in fit, seal and clamping connection with one end of the inner layer pipe 501, the other end of the outer layer pipe 502 is in fit, seal and clamping connection with the other end of the inner layer pipe 501, an integrally formed sealing ring 505 is coaxially arranged on the outer wall of the end part of the inner layer pipe 501 in a protruding mode, and an annular sealing groove 504 for embedding the sealing ring 505 is arranged on the inner wall of the end part of the outer layer pipe 502; meanwhile, a fixed ring 506 is connected between the two outer tubes 502, external threads are arranged on the outer wall of the end part of the outer tube 502, internal threads 507 meshed with the external threads are arranged on the inner wall of the fixed ring 506, a tight sealing ring 505 is arranged on the side walls of the two ends of the fixed ring 506, and the tight sealing ring 505 can be abutted against the outer wall of the outer tube 502.
In addition, the water injection pipe 401 is communicated with a water injection branch pipe 403 between the first check valve 402 and the high-pressure water injector 40, one end of the water injection branch pipe 403, which is far away from the water injection pipe 401, is communicated with the right end of each grouting branch 202, and the communication position of the water injection branch pipe 403 and the grouting branch 202 is located between the third pressure sensor 803 and the second return pipe 303, and the water injection branch pipe 403 is provided with a third check valve 404 electrically coupled with the PLC.
When the grouting pipeline system of the shield machine is used, the grouting head 203 on the grouting branch 202 is firstly installed at the grouting position to be grouting or the grouting hole of the pipe piece of the shield machine, then a command signal for starting the grouting pump 20 and a signal for starting the corresponding grouting head 203 are input through the touch display, the command signal is transmitted to the PLC, the PLC controls the grouting pump 20 to start through the first controller, meanwhile, the PLC controls the second one-way valve 102 and the switch valve on the corresponding grouting head 203 to start, the grouting pump 20 sequentially conveys the cement slurry in the mortar tank 10 to the grouting head 203 through the grouting pipeline 201 and the grouting branch 202, and the grouting head 203 conveys the cement slurry between the pipe piece and the tunnel wall, so that synchronous grouting is realized simultaneously during pipe piece installation.
While grouting is performed, the first pressure sensor 801 can measure the pressure of cement slurry at the mortar tank 10, corresponding data can be transmitted to the PLC, the PLC can judge the stock of cement slurry in the mortar tank 10 through the data condition of the first pressure sensor 801, and when the stock of cement slurry is more, the pressure data at the first pressure sensor 801 is larger; when the stock of the cement slurry is less, the pressure data at the first pressure sensor 801 is smaller, so that the stock of the cement slurry can be conveniently known in time, and the cement slurry in the mortar tank 10 can be timely replenished; meanwhile, the second pressure sensor 802 can measure the pressure of the cement slurry pumped by the grouting pump 20, so as to determine whether the operation of the grouting pump 20 is normal or whether the cement slurry delivery of the grouting pipeline 201 is normal; the third pressure sensor 803 and the fourth pressure sensor 804 can respectively measure the cement slurry pressure in the grouting branch 202 and the pumping-out pressure of the cement slurry at the grouting head 203, so that the pumped-out cement slurry pressure Fu Gezhu meets the slurry requirement; meanwhile, the PLC can compare the pressure history data measured by the second pressure sensor 802, the third pressure sensor 803 and the fourth pressure sensor 804, further judge whether the cement slurry has local pressure change, and further display the cement slurry in the touch display, so that the cement slurry is convenient to view.
When the grouting pump 20, the grouting pipeline 201, the grouting branch 202 or the grouting head 203 fails or the cement slurry is solidified and blocked, the inner layer pipe 501 made of the PE material, the second pressure sensor 802, the third pressure sensor 803 and the fourth pressure sensor 804 can measure corresponding pressure changes, so that the failure or blocking part can be rapidly removed, corresponding problems can be timely processed, and other structures of the grouting pipeline system are prevented from being influenced; meanwhile, since the grouting pipeline 201 and the grouting branch 202 are both composed of the inner layer pipe 501 and the outer layer pipe 502, when in use, the grouting pipeline 201 and the grouting branch 202 can be slightly bent according to the requirement of a grouting position, the outer layer pipe 502 made of copper or aluminum thin pipes has very good deformation and shaping capability, so that the inner layer pipe 501 is synchronously bent, the inner layer pipe 501 is kept in a slightly bent and non-bending blocking state, and the grouting pipeline 201 and the grouting branch 202 are kept in an unblocked conveying state; meanwhile, the cement slurry is not easy to adhere to the inner layer pipe 501, so that the possibility that the grouting pipeline 201 and the grouting branch 202 are blocked is reduced; when the temperature outside the grouting pipeline 201 and the grouting branch 202 is higher than the temperature inside the grouting pipeline 201 and the grouting branch 202, the supporting cotton 503 can insulate the cement slurry inside the grouting pipeline 201 and the grouting branch 202, so that the temperature of the cement slurry outside is reduced, the solidification speed of the cement slurry under corresponding environmental conditions is further reduced, the possibility that the cement slurry is solidified in the grouting pipeline 201 and the grouting branch 202 is further reduced, and further the grouting precision and grouting efficiency can be improved.
When the grouting pump 20 or the grouting head 203 fails, the grouting pipeline 201 or the grouting branch 202 has the advantages that when the hydraulic pressure of cement slurry in the grouting pipeline is increased, the inner layer pipe 501 made of PE material can slightly deform and is matched with the supporting cotton 503 to provide a part of space for stacking the cement slurry, and when the inner layer pipe 501 and the supporting cotton 503 are pressed onto the inner wall of the outer layer pipe 502, the outer layer pipe 502 can protect the inner layer pipe 501 and avoid the inner layer pipe 501 from being damaged and burst under the action of local high pressure; meanwhile, the pressure data measured by the second pressure sensor 802, the third pressure sensor 803 and the fourth pressure sensor 804 are rapidly increased, at the moment, the PLC receives corresponding signals, and then the first pressure relief valve 302 or the second pressure relief valve 304 is automatically controlled to be opened, redundant cement slurry in the grouting pipeline 201 or the grouting branch 202 passes through the first backflow pipe 301 or the second backflow pipe 303, meanwhile, the PLC controls the grouting pump 20 to be closed through the first controller, and controls the backflow pump 305 to be started through the third controller, so that the cement slurry flows back into the mortar tank 10, and faults in the grouting pump 20, the grouting pipeline 201, the grouting branch 202 or the grouting head 203 are conveniently checked.
When grouting is completed, the cleaning recovery system is controlled to start through the touch display, the PLC starts the high-pressure water injector 40 through the second controller, meanwhile, the PLC controls the on-off valve to be opened, the first one-way valve 402 to be opened, the second one-way valve 102 to be closed, the third one-way valve 404 to be opened, the first pressure release valve 302 to be opened, the second pressure release valve 304 to be opened and the third controller to control the reflux pump 305 to start, the high-pressure water injector 40 pumps high-pressure clean water into the grouting pipeline 201 and the grouting branch 202, the washed waste water returns to the mortar tank 10 through the first reflux pipe 301, the second reflux pipe 303 and the reflux pump 305, and excessive cement slurry in the grouting pipeline 201, the grouting branch 202, the first reflux pipe 301 and the second reflux pipe 303 can be recovered for reuse, and the mortar tank 10 can be cleaned synchronously; meanwhile, clean water in the water injection branch pipe 403 enters the grouting branch 202 and the grouting head 203 to clean the grouting head 203, and meanwhile, the end part of the water injection branch pipe 403 is comprehensively cleaned, and the cleaned water can quickly flow back through the second return pipe 303, so that the water injection branch pipe 403 can cooperate with the water injection pipe 401, and the cleaning efficiency is improved.
Example 2
The difference between the embodiment 2 and the embodiment 1 is basically as shown in fig. 4, and the embodiment of the invention provides a shield machine, which comprises a shield machine body, a duct piece conveying part 901, a slurry mixing part 902, a conveying part 903 and a shield machine grouting pipeline system, wherein the slurry mixing part 902, the conveying part 903 and the grouting part can be sequentially communicated to convey cement slurry.
When the shield tunneling machine is used, the duct piece conveying part 901 can be matched with the shield tunneling machine body, a plurality of duct pieces are sequentially installed on the inner wall of a tunnel while tunneling the shield tunneling machine body, and meanwhile, the slurry mixing part 902, the conveying part 903 and the slurry injecting part can be matched, so that rapid mixing, stirring, conveying and slurry injection of cement slurry are realized, synchronous slurry injection is performed while duct piece installation is performed, and leakage prevention and support are performed on the tunnel wall.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a shield constructs quick-witted slip casting pipe system, includes slip casting portion, its characterized in that, slip casting portion includes:
a mortar tank;
a mortar stirrer installed in the mortar tank;
a grouting pump communicated with the mortar tank;
a first controller for controlling the grouting pump to be opened or closed;
a grouting pipeline communicated with the grouting pump;
one end of each grouting branch is communicated with a grouting pipeline, and one end of each grouting pipeline is communicated with grouting heads one by one according to the grouting branch principle;
the control unit comprises a PLC controller, a pressure display, a first pressure sensor, a second pressure sensor, a third pressure sensor and a fourth pressure sensor, wherein the first pressure sensor is positioned between a mortar tank and a grouting pump, the second pressure sensor is positioned between the grouting pump and a grouting pipeline, the third pressure sensor is positioned between the grouting pipeline and a grouting branch, and the fourth pressure sensor is positioned at a grouting head; the first controller, the pressure display, the first pressure sensor, the second pressure sensor, the third pressure sensor and the fourth pressure sensor are electrically connected with the PLC controller;
the grouting pipeline and the grouting branch comprise an inner layer pipe and an outer layer pipe, the inner layer pipe is made of PE materials, the outer layer pipe is made of bendable metal materials, and the inner layer pipe is coaxially sleeved in the outer layer pipe.
2. The shield tunneling machine grouting pipe system of claim 1, further comprising a backflow protection unit comprising:
the first return pipe is communicated with the grouting pipeline, and a first pressure relief valve capable of presetting pressure is arranged between the first return pipe and the grouting pipeline; when the pressure data measured by the second pressure sensor exceeds the preset pressure, the first pressure relief valve is opened to communicate the first return pipe with the grouting pipeline;
the second return pipe is communicated with the grouting branch, and a second pressure relief valve capable of presetting pressure is arranged between the second return pipe and the grouting branch; when the pressure data measured by the third pressure sensor or the fourth pressure sensor exceeds the preset pressure, the second pressure relief valve is opened to communicate the second return pipe with the grouting branch;
the first relief valve and the second relief valve are electrically connected with the PLC, and the first return pipe and the second return pipe are communicated with the mortar tank.
3. The grouting pipeline system of the shield tunneling machine according to claim 2, wherein the second return pipe is communicated with the middle part of the first return pipe, and a return pump is arranged between the first return pipe and the mortar tank.
4. The shield tunneling machine grouting pipeline system according to claim 1, further comprising a cleaning recovery system, wherein the high-pressure water injection machine, a second controller for controlling the high-pressure water injection machine to be opened or closed and a water injection pipe communicated with the high-pressure water injection machine are arranged, one end of the water injection pipe, far away from the high-pressure water injection machine, is communicated between the grouting pump and the mortar tank, a first one-way valve is arranged at one end of the water injection pipe, close to the mortar tank, a second one-way valve is arranged at the position, close to the water injection pipe, of the mortar tank, and the second controller, the first one-way valve and the second one-way valve are electrically connected with the PLC.
5. A shield tunneling machine grouting pipe system according to claim 3, wherein the first return pipe is in communication with the grouting pipe at an end of the grouting pipe remote from the grouting pump.
6. The shield tunneling machine grouting pipe system of claim 5, wherein the second return pipe is in communication with the grouting branch at an end of the grouting branch near the grouting head.
7. The grouting pipeline system of the shield machine according to claim 6, wherein the structures of the first backflow pipe and the second backflow pipe are identical to the structure of the grouting pipeline.
8. The grouting pipeline system of claim 7, wherein the outer layer pipe is made of stainless steel, copper or aluminum thin pipe, and the wall thickness of the outer layer pipe is larger than 5mm and smaller than 15mm.
9. The shield tunneling machine according to claim 8, wherein elastic supporting cotton is sandwiched between the outer layer pipe and the inner layer pipe, the supporting cotton is cylindrical and coaxially sleeved outside the inner layer pipe, one end of the outer layer pipe is fixedly connected with one end of the inner layer pipe in a fitting manner, and the other end of the outer layer pipe is fixedly connected with the other end of the inner layer pipe in a fitting manner.
10. The shield tunneling machine is characterized by comprising a shield tunneling machine body, a slurry stirring part, a conveying part and the shield tunneling machine grouting pipeline system according to any one of claims 1 to 9, wherein the slurry stirring part, the conveying part and the grouting part can be sequentially communicated to convey cement slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310967546.3A CN116906059A (en) | 2023-07-31 | 2023-07-31 | Grouting pipeline system of shield tunneling machine and shield tunneling machine thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310967546.3A CN116906059A (en) | 2023-07-31 | 2023-07-31 | Grouting pipeline system of shield tunneling machine and shield tunneling machine thereof |
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| CN116906059A true CN116906059A (en) | 2023-10-20 |
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| CN202310967546.3A Pending CN116906059A (en) | 2023-07-31 | 2023-07-31 | Grouting pipeline system of shield tunneling machine and shield tunneling machine thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117552806A (en) * | 2024-01-11 | 2024-02-13 | 中国建筑一局(集团)有限公司 | Grouting reinforcement device and method for shield tunnel in service period |
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2023
- 2023-07-31 CN CN202310967546.3A patent/CN116906059A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117552806A (en) * | 2024-01-11 | 2024-02-13 | 中国建筑一局(集团)有限公司 | Grouting reinforcement device and method for shield tunnel in service period |
| CN117552806B (en) * | 2024-01-11 | 2024-04-09 | 中国建筑一局(集团)有限公司 | Grouting reinforcement device and method for shield tunnel in service period |
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