CN104695969A - Method for switching slurry tunneling mode to earth pressure tunneling mode of shield tunneling machine - Google Patents
Method for switching slurry tunneling mode to earth pressure tunneling mode of shield tunneling machine Download PDFInfo
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- CN104695969A CN104695969A CN201510091385.1A CN201510091385A CN104695969A CN 104695969 A CN104695969 A CN 104695969A CN 201510091385 A CN201510091385 A CN 201510091385A CN 104695969 A CN104695969 A CN 104695969A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000002002 slurry Substances 0.000 title claims abstract description 32
- 230000005641 tunneling Effects 0.000 title abstract description 16
- 239000002893 slag Substances 0.000 claims abstract description 18
- 238000009412 basement excavation Methods 0.000 claims abstract description 5
- 239000002689 soil Substances 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000005553 drilling Methods 0.000 claims description 5
- 239000002243 precursor Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a method for switching a slurry tunneling mode to an earth pressure tunneling mode of a shield tunneling machine. The method comprises the following steps of switching slurry circulation into built-in shunt circulation in the normal slurry tunneling mode, starting a cutterhead of the shield tunneling machine to start excavation after internal pressure of an earth chamber is stable, closing a slurry discharge valve, switching to circulation forward feeding mode, stacking earth slag cut by the cutterhead in the earth chamber, controlling the internal pressure of the earth chamber, opening a slurry discharge valve reserved at the top of a screw conveyor to discharge slurry, reducing and controlling tunneling speed when a tunneling torque of the shield tunneling machine is increased obviously to stack muck in the earth chamber till the slurry discharge valve at the top of the screw conveyor is blocked, opening a slurry discharge hole at the upper part of a middle partition of a front body of the shield tunneling machine to discharge the slurry, dredging the slurry discharge hole to discharge the slurry again after the slurry discharge hole is blocked till the slurry discharge hole is completely blocked, starting the screw conveyor, controlling slag discharge via opening and closing of a gate, and directly accomplishing switchover from the slurry tunneling mode to the earth pressure tunneling mode without shutdown.
Description
Technical field
The present invention relates to a kind of underground construction shield construction method, particularly a kind of double mode shield machine is switched to the method for soil pressure boring mode by muddy water boring mode.
Background technology
Shield Method is one of important technology becoming tunnel construction.In general the kind of Suporting structure is corresponding with geological conditions, and what adopt at present is substantially all monotype shield machine, cannot carry out pattern and switch utilization.Tunneling method can only be the wherein one of earth pressure balanced driving or slurry-water balance type driving, and therefore the ability to work of shield machine adaptation ground environment, ground surface environment and long distance is extremely restricted.
Particularly change greatly at the geological condition passing through area of advancing, comparatively complicated location, the complex environments such as earth's surface construction of structures, river basin, pipeline.Easily there is the problems such as driving difficulty in the shield machine of single boring mode.
The shield machine of traditional single-mode is by type selecting than choosing, adaptability teaching, and one is the one in selected earth pressure balance shield machine or slurry-water balance type shield machine; Two is select two kinds of shield machines simultaneously, is applied to respectively in engineering, and causing increases equipment investment expense or increase and to start the expense of the great numbers such as active well.Due to the limitation of shield machine single-mode, this method, once selected, be applied in constructing tunnel and just cannot change, then need to spend very large economic cost and duration cost if must change shield machine.Affect the construction period, increase engineering cost, adverse effect is caused to construction.
On basis for slurry shield abundant in compound stratum, EPB shield tunneling construction experience, in conjunction with the practical experience that muddy water, the double mode shield machine of soil pressure use, take the lead in the new ideas mode switch function proposed.But now do not switch to the construction method of soil pressure boring mode by muddy water boring mode in industry or achieve the construction method being switched to muddy water boring mode by soil pressure boring mode.
Summary of the invention
Object of the present invention, is to provide a kind of shield machine to switch to the method for soil pressure boring mode by muddy water boring mode.
The solution that the present invention solves its technical problem is: shield machine switches to the method for soil pressure boring mode by muddy water boring mode, comprises the following steps,
1) in normal muddy water boring mode, the circulation of muddy water is switched to machine internal bypass circulation;
2) in native storehouse after pressure stability, start cutter head of shield machine, start to excavate;
3) row's of closedown mud valve, switches to circulation and just send pattern;
4) along with shield machine excavates, the native slag that knife cutting gets off is piled up in native storehouse, is just sending the mud of pattern to discharge pressure in control Tu Cang by mud pipe after Tu Cang by circulation;
5) pulp-expelling valve opening screw machine top reserved carries out plasma discharge;
6) when shield machine driving moment of torsion obviously increases, control driving speed, dregs is deposited in native storehouse, until clogging appears in screw machine top pulp-expelling valve;
7) open plasma discharge behind the plasma discharge hole on shield machine precursor median septum top, after clogging appears in plasma discharge hole, dredging is arranged, until block completely again;
8) start screw machine, control to slag tap by shutter opening and closing, complete muddy water boring mode and switch to soil pressure boring mode.
As the further improvement of technique scheme, after step 1), the row's of closedown mud valve, opens automatic pressure-maintaining pattern, and in native storehouse, grouting, opens circulation after the pressure in Stabilized Soil storehouse and just send pattern.
As the further improvement of technique scheme, the mud flow of described automatic pressure-maintaining pattern is ground high-quality slurries → AV10 valve → send mud pipeline → CV1 valve → MV1 valve → Tu Cang; Circulation is just sending the mud flow of pattern to be ground high-quality slurries → AV10 valve → send mud pipeline → AV1 valve → MV1 valve → Tu Cang → MV2 valve → AV2 → mud line → floor treatment.
As the further improvement of technique scheme, in step 2) in, the rotating speed 0.6rpm-0.8rpm of the cutterhead of shield machine, shield machine driving speed 15mm/min-25mm/min.
As the further improvement of technique scheme, in step 6), the excavation speed of shield machine drops to 8mm/min-11mm/min.
As the further improvement of technique scheme, in step 7), cutterhead rotating speed is 0.6rpm, and fltting speed controls at 10mm/min, effectively advances drilling depth to control at 500mm-700mm in handoff procedure.
As the further improvement of technique scheme, in step 7), close MV1 valve, stop mud circulation, open screw machine gate, the aperture of screw machine gate keeps, within 15%, transferring screw machine to and slagging tap, until meeting till soil pressure pattern slags tap.
As the further improvement of technique scheme, in step 7), the quantity in described plasma discharge hole is 8,10 or 12, and all plasma discharge holes plum blossom distributes alternately or is circumferentially uniformly distributed.
The invention has the beneficial effects as follows: this inventive method makes shield machine directly can complete boring mode switching in tunnel, without the need to any parts of dismounting.Whole switching flow completes in shield machine progradation, realizes the displacement of native storehouse medium by screw machine and mud circulation, easily and fast, safety; After switching to soil pressure pattern driving, muddy water function system can be used as Large Copacity swell soil (mud) injected system of sediment improvement under soil pressure pattern; Circulation system can be used as shutting down pressurize and air pressure and opens a position and make mud film.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present invention, instead of whole embodiment, and those skilled in the art, under the prerequisite not paying creative work, can also obtain other design schemes and accompanying drawing according to these accompanying drawings.
Fig. 1 is the circulation schematic diagram of machine internal bypass circulation in the present invention;
Fig. 2 is the circulation schematic diagram of automatic pressure-maintaining pattern in the present invention;
Fig. 3 is the circulation schematic diagram that in the present invention, circulation is just sending pattern;
Fig. 4 is that the screw machine of soil pressure pattern in the present invention is slagged tap schematic diagram.
Detailed description of the invention
Be clearly and completely described below with reference to embodiment and the accompanying drawing technique effect to design of the present invention, concrete structure and generation, to understand object of the present invention, characteristic sum effect fully.Obviously; described embodiment is a part of embodiment of the present invention, instead of whole embodiment, based on embodiments of the invention; other embodiments that those skilled in the art obtains under the prerequisite not paying creative work, all belong to the scope of protection of the invention.In addition, all connection/annexations mentioned in literary composition, not singly refer to that component directly connects, and refer to and according to concrete performance, can connect auxiliary by adding or reducing, and form more excellent draw bail.
With reference to Fig. 1 ~ Fig. 4, shield machine switches to the method for soil pressure boring mode by muddy water boring mode, comprises the following steps,
1) in normal muddy water boring mode, the circulation of muddy water is switched to machine internal bypass circulation;
2) in native storehouse after pressure stability, start cutter head of shield machine, start to excavate;
3) row's of closedown mud valve, switches to circulation and just send pattern;
4) along with shield machine excavates, the native slag that knife cutting gets off is piled up in native storehouse, is just sending the mud of pattern to discharge pressure in control Tu Cang by mud pipe after Tu Cang by circulation;
5) pulp-expelling valve opening screw machine top reserved carries out plasma discharge;
6) when shield machine driving moment of torsion obviously increases, control driving speed, dregs is deposited in native storehouse, until clogging appears in screw machine top pulp-expelling valve;
7) open plasma discharge behind the plasma discharge hole on shield machine precursor median septum top, after clogging appears in plasma discharge hole, dredging is arranged, until block completely again;
8) start screw machine 8, control to slag tap by shutter opening and closing, complete muddy water boring mode and switch to soil pressure boring mode.
Said method make shield machine under boring performance not plasma discharge continue excavate, sending under mud tube open mode stop send slurry, guarantee pressure stability in storehouse by safety valve and screw machine 8, realize conversion, until meet soil pressure pattern be unearthed driving standard.Like this, shield machine directly can complete boring mode switching in tunnel, without the need to any parts of dismounting.Whole switching flow completes in shield machine progradation, realizes the displacement of native storehouse medium by screw machine 8 and mud circulation, easily and fast, safety; After switching to soil pressure pattern driving, muddy water function system can be used as Large Copacity swell soil (mud) injected system of sediment improvement under soil pressure pattern; Circulation system can be used as shutting down pressurize and air pressure and opens a position and make mud film.
Be further used as preferred embodiment, after step 1), the row's of closedown mud valve, opens automatic pressure-maintaining pattern, and in native storehouse, grouting, opens circulation after the pressure in Stabilized Soil storehouse and just send pattern.
Be further used as preferred embodiment, the mud flow of described automatic pressure-maintaining pattern is ground high-quality slurries 1 → AV10 valve 2 → send mud pipeline → CV1 valve 3 → MV1 valve 4 → Tu Cang; Circulation is just sending the mud flow of pattern to be ground high-quality slurries 1 → AV10 valve 2 → send mud pipeline → AV1 valve 5 → MV1 valve 4 → Tu Cang → MV2 valve 6 → AV2 valve 7 → mud line → floor treatment.
Be further used as preferred embodiment, in step 2) in, the rotating speed 0.6rpm-0.8rpm of the cutterhead of shield machine, shield machine driving speed 15mm/min-25mm/min.
Be further used as preferred embodiment, in step 6), the excavation speed of shield machine drops to 8mm/min-11mm/min, and preferably, the excavation speed of shield machine controls at 11mm/min.
Be further used as preferred embodiment, in step 7), cutterhead rotating speed is 0.6rpm, and fltting speed controls at 10mm/min, effectively advances drilling depth to control at 500mm-700mm in handoff procedure.
Be further used as preferred embodiment, in step 7), close MV1 valve 4, stop mud circulation, open screw machine gate, the aperture of screw machine gate keeps, within 15%, transferring screw machine 8 to and slagging tap, until meeting till soil pressure pattern slags tap.
Be further used as preferred embodiment, in step 7), the quantity in described plasma discharge hole is 8,10 or 12, and all plasma discharge holes plum blossom distributes alternately or is circumferentially uniformly distributed.
It is below the preferred embodiment of the present invention.
(1) determine the position that pattern switches, do to switch front preparation.
Preparation comprises: arrange regulating valve group, corollary equipment battery truck unit, straddle truck preparation; Soil pressure mode element all from ground, tunnel, shield machine is normally unobstructed.
In current normal muddy water boring mode: circulation can switch to machine internal bypass circulation, circulation slurry stream is to: ground high-quality slurries 1 → AV10 valve 2 → send mud pipeline → AV1 valve 5 → MV3 valve → AV2 valve 7 → mud line → ground processing equipment.See accompanying drawing 1;
(2) row of closedown mud valve MV2 valve 6, opens automatic pressure-maintaining pattern, sees accompanying drawing 2, adjust otch hydraulic pressure to steady pressure by CV1 valve 3, and circulation slurry stream is to: ground high-quality slurries 1 → AV10 valve 2 → send mud pipeline → CV1 valve 3 → MV1 valve 4 → Tu Cang; All the other pipeline valve group closure states.
(3) open and send mud MV1 valve 4, MV3 valve 9, circulation just delivers to Tu Cang.See accompanying drawing 3;
Circulation is just sending pattern (to pass through programming, now MV2 valve 6 cuts out, MV1 valve 4, MV3 valve 9 are opened, and deviation flow is just, mud flow: ground high-quality slurries 1 → AV10 valve 2 → send mud pipeline → AV1 valve 5 → MV1 valve 4 → Tu Cang → MV2 valve 6 → AV2 valve 7 → mud line → floor treatment.All the other pipeline valve group closure states.
(4) regulate circulation smooth and easy, in native storehouse after pressure stability, start cutter head of shield machine (rotating speed 0.6rpm-0.8rpm), driving speed 15mm/min-20mm/min, open muddy water boring mode and run.Carry out advancing or running according to practice of construction permissive condition with above-mentioned speed, stablize otch hydraulic pressure.Now will check mechanical pressure gauge changes consistent with pressure in storehouse (otch hydraulic pressure) situation that fluctuates.
If shield machine is just being located under muddy water pattern in driving, relevant preparation puts in place all, then without the need to standby, shut down, adjustment setup parameter.Above-mentioned (2), (3) step sequence can be omitted, and directly carry out step sequence (4).
(5) close MV2 valve 6, circulation just send (sending slurry sending stopping under mud tube open mode), pays close attention to pressure (otch hydraulic pressure) change in storehouse.
(6) the native slag that will cut of cutterhead, is slowly deposited in Tu Cang from lower to upper, and the mud on top is now discharged by circulation " Tu Cang → MV1 valve 4 → MV3 valve 9 → mud pipe → floor treatment ".Poor by pipeline plasma discharge controlled pressure, shield driving speed meets otch variation in water pressure, and undulated control is pressure in P(storehouse) ± 10kpa.
(5) open screw machine top to reserve pulp-expelling valve and carry out plasma discharge, observe: the slurries situation of 1. discharging; 2. CV1 valve 3 plasma discharge situation; 3. P2 mouth piece pressure condition;
(6) shield machine continues forward impelling with above-mentioned speed, when driving moment of torsion obviously increases, controls driving speed and drops to 10mm/min; Until there is clogging in screw machine top pulp-expelling valve.
(7) cutterhead rotating speed 0.6rpm, fltting speed controls at 10mm/min, keeps boring mode to push ahead, and switches and effectively advances drilling depth to control at 500mm-700mm; Open plasma discharge hole, 12 positions, shield machine precursor median septum top, plasma discharge; After clogging appears in plasma discharge hole, dredging is arranged, until block completely again; Close MV1 valve 4, stop circulation, open screw machine gate, aperture keeps, within 15%, transferring screw machine 8 to and slagging tap, and belt transmits dregs, sees accompanying drawing 4.Note slagging tap slag specimen situation, until meeting till soil pressure pattern slags tap.
(8) start screw machine 8, control to slag tap by shutter opening and closing.
1. starting gate slightly, starts screw machine 8 from minimum speed.Gush for reducing, screw machine gate intermittence is opened, and rotating speed controls at 1rpm; Common casting direction is forward direction.Cause rotating when stopping because snapping in gravel etc., can hocket " reverse ", " rotating forward ", to get rid of bulky grain thing.
When 2. adjusting screw machine 8 rotating speed, to control according to pressure in storehouse.
3. support pressure controls by taking adjustment driving speed and screw machine 8 rotating speed, and should maintain the balance of cutting soil amount and soil discharge quantity, avoids backbreaking.
4. for better reducing situation of gushing: one is can be realized by sediment improvement.Dense slurry liquid, inert slurry and high molecular polymer etc. can be adopted with the use of as sediment improvement agent.To slag tap denseness and gush frequency for foundation, adjustment modifying agent injection rate in good time.Two is that slag tap gatage, screw machine 8 rotating speed of screw machine 8 is moderate, unsuitable excessive, gushing interim, by cleanout door flow effect, mud can not can spray entirely in slag notch accumulation moment, extends the reaction time of operating personnel, the risk so that reduction of taking measures is gushed.
(9) switch operation to complete, normal soil pressure boring mode, accompanying drawing 4.
2, for ensureing the continuity and the validity that switch operation, whole handoff procedure, can adopt and complete in the effective drilling depth of an endless tube sheet, preferably the section of jurisdiction of 1.5 meters or 1.2 meters wide cuts, and the operation avoiding pipe sheet assembling to bring is interrupted.
More than that better embodiment of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (8)
1. shield machine is switched to the method for soil pressure boring mode by muddy water boring mode, it is characterized in that: comprise the following steps,
1) in normal muddy water boring mode, the circulation of muddy water is switched to machine internal bypass circulation;
2) in native storehouse after pressure stability, start cutter head of shield machine, start to excavate;
3) row's of closedown mud valve, switches to circulation and just send pattern;
4) along with shield machine excavates, the native slag that knife cutting gets off is piled up in native storehouse, is just sending the mud of pattern to discharge pressure in control Tu Cang by mud pipe after Tu Cang by circulation;
5) pulp-expelling valve opening screw machine top reserved carries out plasma discharge;
6) when shield machine driving moment of torsion obviously increases, control driving speed, dregs is deposited in native storehouse, until clogging appears in screw machine top pulp-expelling valve;
7) open plasma discharge behind the plasma discharge hole on shield machine precursor median septum top, after clogging appears in plasma discharge hole, dredging is arranged, until block completely again;
8) start screw machine, control to slag tap by shutter opening and closing, complete muddy water boring mode and switch to soil pressure boring mode.
2. shield machine according to claim 1 is switched to the method for soil pressure boring mode by muddy water boring mode, it is characterized in that: after step 1), the row's of closedown mud valve, opens automatic pressure-maintaining pattern, in native storehouse, grouting, opens circulation after the pressure in Stabilized Soil storehouse and just send pattern.
3. shield machine according to claim 2 is switched to the method for soil pressure boring mode by muddy water boring mode, it is characterized in that: the mud flow of described automatic pressure-maintaining pattern is ground high-quality slurries → AV10 valve → send mud pipeline → CV1 valve → MV1 valve → Tu Cang; Circulation is just sending the mud flow of pattern to be ground high-quality slurries → AV10 valve → send mud pipeline → AV1 valve → MV1 valve → Tu Cang → MV2 valve → AV2 → mud line → floor treatment.
4. shield machine according to claim 1 is switched to the method for soil pressure boring mode by muddy water boring mode, it is characterized in that: in step 2) in, the rotating speed 0.6rpm-0.8rpm of the cutterhead of shield machine, shield machine driving speed 15mm/min-25mm/min.
5. shield machine according to claim 1 is switched to the method for soil pressure boring mode by muddy water boring mode, it is characterized in that: in step 6), and the excavation speed of shield machine drops to 8mm/min-11mm/min.
6. shield machine according to claim 1 is switched to the method for soil pressure boring mode by muddy water boring mode, it is characterized in that: in step 7), cutterhead rotating speed is 0.6rpm, and fltting speed controls at 10mm/min, effectively advances drilling depth to control at 500mm-700mm in handoff procedure.
7. shield machine according to claim 1 is switched to the method for soil pressure boring mode by muddy water boring mode, it is characterized in that: in step 7), close MV1 valve, stop mud circulation, open screw machine gate, the aperture of screw machine gate keeps, within 15%, transferring screw machine to and slagging tap, until meeting till soil pressure pattern slags tap.
8. shield machine according to claim 1 is switched to the method for soil pressure boring mode by muddy water boring mode, it is characterized in that: in step 7), the quantity in described plasma discharge hole is 8,10 or 12, and all plasma discharge holes plum blossom distributes alternately or is circumferentially uniformly distributed.
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| CN201510091385.1A CN104695969B (en) | 2015-02-28 | 2015-02-28 | The method that shield machine is switched to soil pressure boring mode by muddy water boring mode |
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| CN201510091385.1A CN104695969B (en) | 2015-02-28 | 2015-02-28 | The method that shield machine is switched to soil pressure boring mode by muddy water boring mode |
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| CN104695969B CN104695969B (en) | 2017-01-04 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110306991A (en) * | 2019-07-25 | 2019-10-08 | 中交天和机械设备制造有限公司 | Muddy water soil pressure double mode shield machine |
| CN110397441A (en) * | 2019-06-27 | 2019-11-01 | 中交一公局第三工程有限公司 | Shield machine shuts down pressure maintaining and prevents the control method of stagnant row in sand-pebble layer |
| CN111219194A (en) * | 2020-03-20 | 2020-06-02 | 中铁隧道局集团有限公司 | Slurry/soil pressure dual-mode shield and tunneling mode conversion method thereof |
| CN113309530A (en) * | 2020-12-30 | 2021-08-27 | 中铁工程装备集团有限公司 | Multi-mode heading machine soil pressure monitoring system and working method thereof |
| CN114165245A (en) * | 2021-12-08 | 2022-03-11 | 北京市市政四建设工程有限责任公司 | Earth pressure balance and mud-water balance dual-mode shield tunneling conversion method and tunneling method |
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| CN202970722U (en) * | 2012-11-14 | 2013-06-05 | 广东华隧建设股份有限公司 | Double-mode shield tunneling machine |
| CN104121023A (en) * | 2014-07-02 | 2014-10-29 | 中交隧道工程局有限公司 | Method and device for testing leakage stopping value of excavation face mud film in bulk breaking by slurry shield with pressure |
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| JPH02147794A (en) * | 1988-11-29 | 1990-06-06 | Asanumagumi:Kk | Earth-pressure shield tunneling method using foaming solid body |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110397441A (en) * | 2019-06-27 | 2019-11-01 | 中交一公局第三工程有限公司 | Shield machine shuts down pressure maintaining and prevents the control method of stagnant row in sand-pebble layer |
| CN110306991A (en) * | 2019-07-25 | 2019-10-08 | 中交天和机械设备制造有限公司 | Muddy water soil pressure double mode shield machine |
| CN111219194A (en) * | 2020-03-20 | 2020-06-02 | 中铁隧道局集团有限公司 | Slurry/soil pressure dual-mode shield and tunneling mode conversion method thereof |
| CN111219194B (en) * | 2020-03-20 | 2021-07-27 | 中铁隧道局集团有限公司 | Slurry/soil pressure dual-mode shield and tunneling mode conversion method thereof |
| CN113309530A (en) * | 2020-12-30 | 2021-08-27 | 中铁工程装备集团有限公司 | Multi-mode heading machine soil pressure monitoring system and working method thereof |
| CN114165245A (en) * | 2021-12-08 | 2022-03-11 | 北京市市政四建设工程有限责任公司 | Earth pressure balance and mud-water balance dual-mode shield tunneling conversion method and tunneling method |
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| Publication number | Publication date |
|---|---|
| CN104695969B (en) | 2017-01-04 |
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