CN207499877U - A kind of gas soil combines balance shield machine - Google Patents
A kind of gas soil combines balance shield machine Download PDFInfo
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- CN207499877U CN207499877U CN201721408654.3U CN201721408654U CN207499877U CN 207499877 U CN207499877 U CN 207499877U CN 201721408654 U CN201721408654 U CN 201721408654U CN 207499877 U CN207499877 U CN 207499877U
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Abstract
The purpose of this utility model is to provide a kind of gas soil joint balance shield machine so as to promote the efficiency of gas soil joint balance shield construction.Wherein, gas soil joint balance shield machine, including cutterhead, gas supply assembly, Tu Cang, screw conveyor, the gas supply assembly includes：Gas piping is supplied for Tu Cang, including air inlet pipe and air outlet pipe, switch valve and pressure reducing valve are configured in air inlet pipe, switch valve and relief valve are configured in air outlet pipe, air inlet pipe is connected in front end with air outlet pipe and connect native storehouse partition board stomata, and air inlet pipe tail end is connected with air compressor machine, for pressurizeing, air outlet pipe tail end is connected with air, for pressure release；And foam line, foam is provided for the cutting soil body, including foam pump, foaming agent case, foam maker, water tank, the water from water tank and foaming agent are pressed into foam maker by foam pump, the gas mixing being pressed into foam maker with the air compressor machine.
Description
Technical field
The utility model belongs to geotechnical engineering field, is related to a kind of gas soil joint balance shield digging control method and driving
Equipment.
Background technology
With the continuous development of science and technology, shield method has become the mainstream of rail tunnel and highway tunnel construction
Method, it is small due to being disturbed to ground environment especially in Construction of Urban Rail Traffic, it is more widely applied.According to driving
Shield machine can be divided into earth pressure balanced shield, EPBS and slurry balance shield by face balance pattern, be respectively suitable for different stratum with
Environmental condition.Wherein earth pressure balanced shield, EPBS because cost it is relatively low, the advantages that facility is relatively easy, is using more extensive.But work as and encounter richness
The soft or hard rock compound stratum of water, conventional full soil pressure boring mode can cause shield load to increase, and tool wear is accelerated, also usually
It gushs accident, substantially reduces construction efficiency, reduce construction quality.
For this problem, gas soil joint balance shield driving technology gradually grows up, with Guangzhou Metro Construction the most
It is typical.Guangzhou Metro Line No.1 martyrs' park station-agriculture say stand-park two sections of setting out in advance to make arrangements are that domestic trial in (1996) for the first time makes
It is constructed with gas soil joint balance shield, achieves preferable effect.The technology using air pressure auxiliary driving, using gas piping or
Foam line is pressed into natural air to Tu Cang tops, and lower part still maintains dregs, realizes cutter head torque reduction, construction speed adds
Fast target.The technology has significant progress and development to two later during the decade, is brought well to the practice on similar stratum
Project benefit.But there are still problems with for current gas soil joint balance shield：
(1) gas piping can not pressure release, in native storehouse air pressure be difficult to accurately control, be only capable of adjusting by reducing air inlet pressure；
Dregs easily flows back blocking pipeline during pressure release；
(2) foam line is single pump multitube, can there are problems that insufficient pressure so that foam is injected cutterhead；
(3) air pressure and the soil pressure distinguished in native storehouse is not known, still with traditional soil pressure control method control pressure and soil pressure.When
When pressure is excessive in storehouse, support pressure error in judgement is easily caused, if accelerating to be unearthed, hole capital after selling all securities rate increase, face risk improves；If
Reduce air inlet pressure, time-consuming, and effect is also possible to that not significantly, surface uplift or even breakdown can be caused.
The presence of these problems brings very big inconvenience to the joint balance shield construction of gas soil, on the one hand low construction efficiency with
Quality, it is often more important that increase accident risk.Thus, support pressure can effectively objectively be controlled it is necessary to utility model is a kind of
Face balance method, solve above-mentioned problem.
Utility model content
The purpose of this utility model is to provide a kind of gas soil to combine balance shield machine and its face balance control method,
So as to promote the efficiency of gas soil joint balance shield construction.
A kind of gas soil combines balance shield machine, including cutterhead, gas supply assembly, Tu Cang, screw conveyor, the gas supply assembly
Including gas piping, foam line, wherein, gas piping is supplied for Tu Cang, including air inlet pipe and air outlet pipe, is configured in air inlet pipe
Switch valve and pressure reducing valve, configuration switch valve and relief valve in air outlet pipe, air inlet pipe are connected in front end with air outlet pipe and connect Tu Cang
Partition board stomata, air inlet pipe tail end is connected with air compressor machine, and for pressurizeing, air outlet pipe tail end is connected with air, for pressure release；And bubble
Foam pipeline provides foam for the cutting soil body, and including foam pump, foaming agent case, foam maker, water tank, foam pump will come from water tank
Water and foaming agent press-in foam maker, in foam maker with the air compressor machine press-in gas mixing.
In one embodiment, including 6 pressure sensors arranged on native storehouse partition board, wherein, it is handed in gas and dregs
It is set respectively on interface, in horizontal median axis, above the interface and between the interface and the horizontal median axis
Put 1 pressure sensor, 2 pressure sensor of horizontal median axis arranged beneath, wherein, rear 4 pressure sensor setting
Position can adjust.
In one embodiment, it is connected in native storehouse partition board and adds anti-clogging porous material at the stomata of the gas piping.
In one embodiment, 1 gas piping corresponds to 1 gas injection hole on the partition board of native storehouse, and gas injection hole is set
It puts near the gas soil interface of native storehouse partition board, 1 foam line corresponds to 2 foam injection holes, and foam injection hole is equal along cutterhead
Even arrangement.
In one embodiment, the charge flow rate V and screw conveyor rotating speed r of air inlet pipe is maintained to meet：
In formula：P --- gas pressure in native storehouse；
A --- shield machine cross-sectional area；
P0--- the gas pressure in air compressor machine；
The relation function v=f (r) of f (r) --- driving speed and screw conveyor rotating speed.
A kind of gas soil combines balance shield face balance control method, combines balance shield machine using the gas soil,
Wherein, the magnitude of the pressure sensor above the interface is P1, pressure sensor on the interface magnitude be
P2, the horizontal median axis the magnitude of pressure sensor be P4, pressure sensing between the interface and the horizontal median axis
The magnitude of device is P3, the magnitude of 2 pressure sensors of the horizontal median axis arranged beneath is respectively P5、P6；
Ensure that hole capital after selling all securities rate is less than 1/2 in tunneling process, dregs highly cannot be below horizontal median axis in native storehouse；
If P1=P2<P3, then hole capital after selling all securities rate is normal；
If P1=P2=P3, then hole capital after selling all securities rate increase, gas soil interface decline, slow down spiral shell with reference to cutter head torque and thrust variation
It revolves conveyer casting, reduce air inflow；
If P1<P2, then hole capital after selling all securities rate reduction, gas soil interface rises, with reference to cutter head torque and thrust variation quickening helical feed
Machine casting increases air inflow；
If P1~P4Numerical value approaches, then hole capital after selling all securities rate slows down screw conveyor casting immediately close to 1/2.
In one embodiment, if 6 pressure sensor magnitudes are generally more than empirical value and calculated value, Tu Cang pressures
Power is integrally bigger than normal, to reduce based on air pressure, accelerates supplemented by casting；
If 6 road sensor magnitudes are generally less than empirical value and calculated value, support pressure is integrally less than normal, should be to slow down
Based on being unearthed, increase supplemented by admission pressure.
The one endless tube piece construction of this method includes three phases：
Stage I starts the preparation stage before driving for shield machine, and shield machine keeps assembled pattern, and cutterhead is static, storage fortune
The transport vehicle for sending dregs is in place, screw conveyor gradual casting outward, and gas soil is kept to balance, under dregs height is gradual in native storehouse
Drop, when hole capital after selling all securities rate reaches setting value, into next stage；
Stage II is normal phase of boring, and shield machine is boring mode first by assembled Mode change, according to including setting
Cutterhead rotating speed, fltting speed, screw conveyor rotating speed, native storehouse charge flow rate construction parameter tunneled, in tunneling process, lead to
It crosses observing earth storehouse pressure sensor numerical values recited and situation of change judges support pressure state；In addition to support pressure, also pay close attention to
Critical construction parameter including propelling pressure, cutter head torque, watches whether dregs mobile performance is influenced into being unearthed, and observation earth's surface is sunk
It whether preferable drops control effect, takes counter-measure according to actual conditions to improve driving state；It is reached when promoting jack stroke
During to controlling value, into next stage；
Stage III, the preparation stage of segment assembly improve dregs height in native storehouse, drop hypobaric effect, reduce assembled
The risk of face unstability during section of jurisdiction, screw conveyor slows down unearthed while tunneling forward, and air compressor machine reduces air inflow, together
Sample needs to keep gas soil balance；
After dregs is bought securities with all one's capital, jack stroke meets assembled requirement, transport section of jurisdiction is in place, and shield machine is changed into assembled mould
Formula carries out pipe sheet assembling, and so far, endless tube piece construction is completed, and is constructed into next endless tube piece.
Description of the drawings
The above and other feature, property and advantage of the utility model will be by with reference to the accompanying drawings and examples
Description and become readily apparent from, wherein：
Fig. 1 is the structure diagram of gas soil joint balance shield machine；
Fig. 2 is that pressure sensor arranges schematic diagram on the partition board of native storehouse；
Fig. 3 is the flow chart that gas soil combines balance shield face balance control method；
Fig. 4 is the gas supply assembly schematic diagram that gas soil combines balance shield machine；
Fig. 5 is pipeline injection hole position view；
Fig. 6 is pressure sensor position schematic diagram on the partition board of native storehouse；
Fig. 7 combines balance shield face model of pressure balance schematic diagram for gas soil；
In figure, 1- gas pipings, 2- foam lines, 3- pressure reducing valves, 4- relief valves, 5- switch valves, 6- air compressor machines, 7- foams
Generator, 8- mixed liquors, 9- foaming agent casees, 10- foam pumps, 11- air, 12- dregs, 13- gas soil interfaces, 14- water tanks,
15- anti-clogging porous materials, 16- horizontal neutral axis, 17- soil storehouse partition board, 18- cutterheads, 19- screw conveyors, 20- pressure sensings
Device (P1~P6)
Specific embodiment
With reference to specific embodiments and the drawings, the utility model is described in further detail, elaborates in the following description
More details are in order to fully understand the utility model, but the utility model obviously can be different from what this was described with a variety of
Other manner is implemented, and those skilled in the art can be in the case of without prejudice to the utility model connotation according to practical application feelings
Condition makees similar popularization, deduces, therefore should not limit the scope of protection of the utility model with the content of this specific embodiment.
It should be noted that these and follow-up other attached drawings are only as an example, it is not to be according to equal proportion
What condition was drawn, and should not be construed as limiting in this, as the protection domain to the utility model actual requirement.
In an embodiment of the utility model, shield machine carries out adaptability reform on the basis of having shield machine.Wherein
Gas supply assembly, as control infrastructure device a part, be mainly made of gas piping 1 and foam line 2；Gas piping 1
It is supplied for Tu Cang, is main air source, foam line 2 provides foam for the cutting soil body, plays the role of sediment improvement, bubble burst
Gas can be into storehouse of burying afterwards, while plays the role of aerating.
Gas piping 1 is made of air inlet pipe and air outlet pipe, and switch valve 5 and pressure reducing valve 3 are configured in air inlet pipe, matches in air outlet pipe
Put switch valve 5 and relief valve 4.When pipeline leaves unused, ensure pipeline sealing using switch valve 5, when pipeline works, depressurized by adjusting
Valve 3, pressure-relief valve 4 control unit control air inlet and lose heart.Air inlet pipe is connected in front end with air outlet pipe and connect on native storehouse partition board 17
Stomata, air inlet pipe tail end is connected with air compressor machine 6, and for pressurizeing, air outlet pipe tail end is connected with air, for pressure release.And in soil
Anti-clogging porous material 15 is added at 17 stomata of storehouse partition board, prevents dregs reflux from blocking gas piping.
Foam line 2 is made of foam pump 10, foaming agent case 9, foam maker 7, water tank 14, and foam pump 10 is by water and bubble
Foam agent is pressed into foam maker 7, and the gas 11 being pressed into generator 7 with air compressor machine 6 mixes, and the thin of 30mm~400mm is made
Small dentation bubble.Cutterhead 18 is injected by pipeline again.To ensure to inject pressure, a foam pump 10 is preferably configured in a pipeline.
The quantity of gas piping 1 and foam line 2 can be according to the configurations such as actual demand and steric requirements, the position of injection hole
It also should similarly design arrangement.1 gas piping corresponds to 1 injection hole, is arranged near the gas soil interface of native storehouse partition board 17,1
Road foam line corresponds to 2 injection holes, is preferably evenly arranged along cutterhead.
The operating pressure of pressure reducing valve 3 and relief valve 4 is preferably 0~1.0MPa, and pressure reducing valve unit interval gas flow should meet
2m3/min.Air pressure setting is dynamic change with empirically determined, in tunneling process according to actual conditions.
In one embodiment, it is 1/4 to draft hole capital after selling all securities rate with reference to pre-stage test and engineering experience, i.e., dregs height in native storehouse
It is 3/1 with gas height ratio, 2 gas pipings 1 is set as shown in Fig. 1 and Fig. 4, Fig. 5, corresponding two is shown in Fig. 4, Fig. 5
The gas injection hole a being located on native storehouse partition board 17 of road gas piping1And a2.4 foam lines 2 are also provided with, Fig. 4, Fig. 5 show
The foam line injection hole f on the native storehouse partition board 17 of corresponding four foam lines is gone out1、f2、f3And f4.1 gas piping corresponds to
One gas injection hole, 1 foam line correspond to 2 foam line injection holes.As shown in fig. 6, it is set altogether on native storehouse partition board 17
Put 6 pressure sensor P1、P2、P3、P4、P5And P6, arrange that (opsition dependent is from top to bottom for 6 pressure sensors on native storehouse partition board
Number 1~6), in gas and dregs interface, (gas soil combines balance shield gas soil height than (or hole capital after selling all securities for a certain engineering
Rate) it is usually fixed) and horizontal median axis position must be provided with pressure sensor, above interface, interface and central axes it
Between 1 road sensor, 2 road sensor of central axes arranged beneath are set respectively, rear 4 road sensor position can adjust.Gas piping one
As 1 work, 1 it is spare, foam line it is general 2 work, 2 it is spare.The operating pressure of pressure reducing valve 3 and relief valve 4 can be with
For 0~1.0MPa, 3 unit interval of pressure reducing valve gas maximum stream flow is 2m3/min。
It during construction, first controls screw conveyor casting rate that Tu Cang is made to balance face full of dregs, recycles flue
Compressed gas is injected in road 1 to Tu Cang, while accelerates 19 casting of screw conveyor, and observe each sensor values, when dregs height
When being down to setting gas soil 13 height of interface, 19 flow of stabilizing gas pipeline 1 and screw conveyor realizes that " gas soil joint is flat
Weighing apparatus ", moves forward steadily, as shown in fig. 7, PTFor soil pressure of soil pressure, PQFor gas pressure, PWFor face water pressure, PSFor face soil
Pressure.
In construction, digging control is carried out using control method described in the utility model, stablizes face, preferably plays gas soil
Combine the advantage of balance, reduce shield machine driving load, improve pipe sheet assembling quality and construction efficiency.Come from site operation situation
It sees, in practice it has proved that the advantages of the utility model.
Gas soil combines the face balance control method control method of balance shield machine, and control flow can be divided into three ranks
Section：
Stage I：
This stage starts the preparation stage before driving for shield machine, and shield machine keeps assembled pattern, and cutterhead is static, storage fortune
The battery truck for sending dregs is in place, screw conveyor gradual casting outward, but the air with injection Tu Cang is needed to keep balancing simultaneously,
It can be controlled according to claim 10.Dregs is highly gradually reduced in this stage soil storehouse, when hole capital after selling all securities rate reaches setting value, into
Enter next stage.
Stage II：
This stage is normal phase of boring, and shield machine is boring mode first by assembled Mode change, setting cutterhead rotating speed,
The construction parameters such as fltting speed, screw conveyor rotating speed, native storehouse charge flow rate.
In tunneling process, support pressure state is judged by observing earth storehouse pressure sensor numerical values recited and situation of change.
It can be generally divided into the variation of gas soil interface and two class of overall variation.Gas soil interface can rise or fall, the former can be with
Using accelerating to be unearthed and increasing air inflow reply, the latter then needs to slow down unearthed, reduction air inflow.Overall variation refers to storehouse internal pressure
Whole be decreased or increased occurs for power relative theory value or empirical value.It, should be with when integrally reducing from area face stability
Slow down based on being unearthed, increase supplemented by admission pressure；It should be accelerated supplemented by casting with slowly reducing based on air pressure when integrally increasing.
In addition to support pressure, the critical constructions parameter such as propelling pressure, cutter head torque should be also paid close attention to, watches dregs flowing
Whether performance is influenced into being unearthed, observation surface settlement control effect whether ideal etc..According to actual conditions take counter-measure with
Improve driving state.
It after the battery truck of filling dregs is fully loaded with, needs to sail out of and topple over, shield machine stops driving at this time, and Tu Cang keeps present situation straight
It is resetted to battery truck, then resets construction parameter and tunneled.When jack stroke is promoted to reach controlling value, (value can root
According to hole capital after selling all securities rate and III screw conveyor rotating speed of stage when relevant parameters inverse) when, it needs to enter the stage III, standard is done for segment assembly
It is standby.
Stage III：
This stage is the preparation stage of segment assembly, it is therefore an objective to improve dregs height in native storehouse, drop hypobaric effect, subtract
The risk of face unstability during small segment assembly.Specific practice and stage I are just the opposite, helical feed while tunneling forward
Machine slow down it is unearthed, air compressor machine reduce air inflow, the two also need keep balance.
After dregs is bought securities with all one's capital, jack stroke meets assembled requirement, it is in place to transport section of jurisdiction using battery truck.Shield machine changes
For assembled pattern, pipe sheet assembling is carried out.So far, endless tube piece construction is completed, and is constructed into next endless tube piece, repeats above-mentioned three rank
Section.
In one embodiment, support pressure numerical value and change can preferably be reflected according to the sensor arrangement of previous embodiment
Change situation allows the operator to judgement construction risk, takes counter-measure in time.Specific practice is as follows：
If P1=P2<P3, then illustrate that hole capital after selling all securities rate is normal；
If P1=P2=P3, then illustrate that hole capital after selling all securities rate increases, gas soil interface declines, and should combine cutter head torque and thrust variation
Slow down screw conveyor casting, reduce air inflow；
If P1<P2, then illustrate that hole capital after selling all securities rate reduces, gas soil interface rises, and should combine cutter head torque and thrust variation accelerates spiral shell
Conveyer casting is revolved, increases air inflow；
If P1~P4Numerical value approaches, and illustrates that hole capital after selling all securities rate close to 1/2, should slow down screw conveyor casting immediately.
If 6 road sensor magnitudes are generally more than empirical value and calculated value, illustrate that support pressure is integrally bigger than normal, Ying Yihuan
It is slow to reduce based on air pressure, accelerate supplemented by casting.
If 6 road sensor magnitudes are generally less than empirical value and calculated value, illustrate that support pressure is integrally less than normal, it should be to subtract
Slowly based on being unearthed, increase supplemented by admission pressure.
It particularly points out, above-mentioned "=" represents that numerical value approaches, "<" represent that numerical value difference is larger.To ensure in tunneling process
Hole capital after selling all securities rate is less than 1/2, i.e., dregs highly cannot be below horizontal median axis in native storehouse；
In one embodiment, it when adjusting hole capital after selling all securities rate, is unearthed with air inlet, is both needed to keep balance into soil with outlet, reflection is arrived
It is that charge flow rate V and screw conveyor rotating speed r is maintained to need to meet in practice of construction：
In formula：P --- gas pressure in native storehouse；
A --- shield machine cross-sectional area；
P0--- the gas pressure in air compressor machine；
The relation function v=f (r) of f (r) --- driving speed and screw conveyor rotating speed.
Aforementioned control method is suitable for the stratum with certain self-stability, has and reduces shield driving cutter head torque, improves
The function of drivage efficiency.Digging control process has the function of the storehouse air pressure of active accommodation soil, including active pressurization and active pressure release
The function of adjusting can preferably control area face balance, and it is excessive and accelerate dregs discharge and the too small initiation of pressure to avoid pressure
Face unstability risk, while dregs return line can be effectively prevent to cause blocking
Compared with prior art, the utility model has the following advantages：
1st, gas soil joint balance shield soil storehouse air pressure feeding pipe is improved, the decompression function supplemented with gas piping carries
The high injectability of foam line；The transformation pipeline can be used for air pressure tool changing, prevent bentonite reflux from causing system failure.
2nd, the pressure sensor arrangement on native storehouse partition board is optimized, air pressure and soil pressure interface is made to be more easy to judge, is Tu Cang
Pressure, which rationally controls, provides more reliable foundation；
3rd, gas soil joint balance shield digging control method is proposed, specification construction process can effectively avoid pressure and sentence
Disconnected error reduces the risk of face unstability.
Although the utility model is disclosed as above with preferred embodiment, its be not for limiting the utility model, it is any
Those skilled in the art without departing from the spirit and scope of the utility model, can make possible variation and modification.Cause
This, every content without departing from technical solutions of the utility model, according to the technical essence of the utility model to above example institute
Any modification, equivalent variations and the modification made, each fall within the protection domain that the utility model claims are defined.
Claims (5)
1. gas soil combines balance shield machine, including cutterhead, gas supply assembly, Tu Cang, screw conveyor, which is characterized in that the confession
Pneumatic module includes：
Gas piping is supplied for Tu Cang, and including air inlet pipe and air outlet pipe, switch valve and pressure reducing valve, air outlet pipe is configured in air inlet pipe
Upper configuration switch valve and relief valve, air inlet pipe are connected in front end with air outlet pipe and connect native storehouse partition board stomata, air inlet pipe tail end and
Air compressor machine is connected, and for pressurizeing, air outlet pipe tail end is connected with air, for pressure release；And
Foam line provides foam for the cutting soil body, and including foam pump, foaming agent case, foam maker, water tank, foam pump will
Water and foaming agent press-in foam maker from water tank, the gas mixing being pressed into foam maker with the air compressor machine.
2. gas soil as described in claim 1 combines balance shield machine, which is characterized in that including arranged on native storehouse partition board 6
Pressure sensor, wherein, on gas and dregs interface, in horizontal median axis, above the interface and the friendship
1 pressure sensor is set respectively between interface and the horizontal median axis, and 2 pressure of horizontal median axis arranged beneath passes
Sensor, wherein, rear 4 pressure sensor installation position can adjust.
3. gas soil as described in claim 1 combines balance shield machine, which is characterized in that connects the flue in native storehouse partition board
Anti-clogging porous material is added at the stomata on road.
4. gas soil as described in claim 1 combines balance shield machine, which is characterized in that 1 gas piping corresponds to native storehouse partition board
On 1 gas injection hole, gas injection hole is arranged near the gas soil interface of native storehouse partition board, and 1 foam line corresponds to 2
Foam injection hole, foam injection hole are evenly arranged along cutterhead.
5. gas soil as claimed in claim 2 combines balance shield machine, which is characterized in that maintain the charge flow rate V of air inlet pipe with
Screw conveyor rotating speed r meets：
In formula：P --- gas pressure in native storehouse；
A --- shield machine cross-sectional area；
P0--- the gas pressure in air compressor machine；
The relation function v=f (r) of f (r) --- driving speed and screw conveyor rotating speed.
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| CN201721408654.3U CN207499877U (en) | 2017-10-27 | 2017-10-27 | A kind of gas soil combines balance shield machine |
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| CN201721408654.3U CN207499877U (en) | 2017-10-27 | 2017-10-27 | A kind of gas soil combines balance shield machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425681A (en) * | 2017-10-27 | 2018-08-21 | 宏润建设集团股份有限公司 | A kind of gas soil joint balance shield machine and its face balance control method |
| CN109339803A (en) * | 2018-12-18 | 2019-02-15 | 广州轨道交通建设监理有限公司 | A kind of shield machine based on laser radar technique is unearthed system for measuring quantity and method |
| CN110125129A (en) * | 2019-06-20 | 2019-08-16 | 中铁工程装备集团有限公司 | A kind of slurry shield pernicious gas collection device |
| CN110186704A (en) * | 2019-07-11 | 2019-08-30 | 西南交通大学 | A kind of simulation air pressure auxiliary earth pressure balanced shield, EPBS experimental provision and experimental method |
| CN110486026A (en) * | 2019-09-05 | 2019-11-22 | 中铁工程装备集团有限公司 | A kind of support pressure control system |
-
2017
- 2017-10-27 CN CN201721408654.3U patent/CN207499877U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425681A (en) * | 2017-10-27 | 2018-08-21 | 宏润建设集团股份有限公司 | A kind of gas soil joint balance shield machine and its face balance control method |
| CN109339803A (en) * | 2018-12-18 | 2019-02-15 | 广州轨道交通建设监理有限公司 | A kind of shield machine based on laser radar technique is unearthed system for measuring quantity and method |
| CN110125129A (en) * | 2019-06-20 | 2019-08-16 | 中铁工程装备集团有限公司 | A kind of slurry shield pernicious gas collection device |
| CN110186704A (en) * | 2019-07-11 | 2019-08-30 | 西南交通大学 | A kind of simulation air pressure auxiliary earth pressure balanced shield, EPBS experimental provision and experimental method |
| CN110486026A (en) * | 2019-09-05 | 2019-11-22 | 中铁工程装备集团有限公司 | A kind of support pressure control system |
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