CN104790962B - Method of switching earth pressure tunneling mode into muddy water tunneling mode for shield tunneling machine - Google Patents
Method of switching earth pressure tunneling mode into muddy water tunneling mode for shield tunneling machine Download PDFInfo
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- CN104790962B CN104790962B CN201510091383.2A CN201510091383A CN104790962B CN 104790962 B CN104790962 B CN 104790962B CN 201510091383 A CN201510091383 A CN 201510091383A CN 104790962 B CN104790962 B CN 104790962B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000005641 tunneling Effects 0.000 title abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 239000002689 soil Substances 0.000 claims description 43
- 239000004575 stone Substances 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 6
- 230000010412 perfusion Effects 0.000 claims description 5
- 239000007858 starting material Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims 1
- 235000019698 starch Nutrition 0.000 claims 1
- 239000008107 starch Substances 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract 3
- 238000010276 construction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000000694 effects Effects 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
- 238000002360 preparation method Methods 0.000 description 2
- 230000000306 recurrent effect Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/124—Helical conveying means therefor
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a method of switching an earth pressure tunneling mode into a muddy water tunneling mode for a shield tunneling machine. The method comprises the steps that an earth discharge gate of a screw conveyor is closed, and the screw conveyor is rotated forwards, so that effective earth blockage is formed inside the screw conveyor; a muddy water treater is started, a regulation valve set is switched on, and a built-in bypass loop flow mode is started; an automatic pressure-maintaining mode is started, corresponding valves are switched on gradually, and mud is injected into an earth bin; a cutter disc is started, and an earth bin stirring bar and the cutter disc are utilized to stir earth mass inside the bin; the built-in bypass loop flow mode is switched to, and the cutter disc is rotated at a low speed so that sufficient stirring is achieved; after the built-in bypass loop flow mode is normal, an inverse loop flow bin cleaning mode is switched to for cleaning the earth bin and pipelines; after the earth bin and the pipelines are normal, a forward loop flow bin cleaning mode is switched to, mud circulation is reinforced, and the automatic pressure-maintaining mode is started; a loop flow forward tunneling loop flow mode is switched to. By the adoption of the method, the earth pressure tunneling mode can be conveniently, rapidly and safely switched into the muddy water tunneling mode without detaching and installing any component.
Description
Technical field
The present invention relates to a kind of underground engineering shield construction method, particularly a kind of double mode shield machine tunnels mould by soil pressure
The method that formula switches to muddy water boring mode.
Background technology
Shield Method has become one of important technology of tunnel construction.In general the species of Suporting structure with ground
Matter condition is corresponding, and what is adopted at present is substantially monotype shield machine, it is impossible to carry out pattern switching utilization.Tunneling method
The one of which of earth pressure balanced driving or slurry-water balance type driving is only, therefore shield machine adapts to ground environment, earth's surface
The ability to work of environment and long range is extremely restricted.
Particularly change greatly in the geological condition for passing through area of advancing, complex location, earth's surface construction of structures, river
The complex environments such as river valley, pipeline.Easily there is the problems such as tunneling difficulty in the shield machine of single boring mode.
The shield machine of traditional single-mode is that, than choosing, adaptability teaching, one is to select soil pressure balance type shield by type selecting
One kind in structure machine or slurry-water balance type shield machine；Two is while selected two kinds of shield machines, are separately in engineering, cause increasing
Oil (gas) filling device Meteorological or increase originate the expense of the great numbers such as active well.Due to the limitation of shield machine single-mode, this side
Method is applied and cannot just be changed in constructing tunnel once selecting, if having to change shield machine then to need to spend very big Jing
Ji cost and duration cost.The construction period is affected, is increased engineering cost, construction is adversely affected.
On the basis of for abundant slurry shield in compound stratum, EPB shield tunneling construction experience, with reference to muddy water, soil pressure
The practical experience that double mode shield machine is used, take the lead in the new ideas mode switch function for proposing.But now in industry do not have
Switched to the construction method of soil pressure boring mode or realized by muddy water boring mode and muddy water is switched to by soil pressure boring mode
The construction method of boring mode.
The content of the invention
The purpose of the present invention, is to provide the side that a kind of shield machine is switched to muddy water boring mode by soil pressure boring mode
Method, which is not required to carry out under given conditions assembling and disassembling any part, can realize safety as needed at any time, quickly switch.
The present invention solves the solution of its technical problem：Shield machine switches to muddy water driving mould by soil pressure boring mode
The method of formula, comprises the following steps,
1）The unearthed gate of screw machine is closed, screw machine is rotated forward, makes screw machine be internally formed effectively soil plug；
2）Start Slurry treatment machine, open and adjust valve group, starter motor internal bypass circulation；
3）Recover interlocking, the hand sluice valve before the row's of opening mud valve opens automatic pressure-maintaining pattern, progressively opens corresponding
Valve, fills mud toward in soil storehouse；
4）Start cutterhead, the soil body in storehouse be stirred using native storehouse stirring rod, cutterhead；
5）Machine internal bypass circulation is switched to, slow rotation cutterhead makes stirring abundant；
6）Switch to after standby internal bypass circulation is normal against sending circulation to bring down stocks, Tu Cang and pipeline are cleaned；
7）After Tu Cang and pipeline are normal, switch to, increase mud circulation, open automatic pressure-maintaining mould
Formula；
8）Switch to circulation and just sending digging circulation, complete the switching that soil pressure boring mode switches to muddy water boring mode.
As the further improvement of above-mentioned technical proposal, in step 2）In, the machine internal bypass circulation is divided into one machine of circulation
Internal bypass, two machine internal bypass of circulation, four machine internal bypass of three machine internal bypass of circulation and circulation；The flow direction of one machine internal bypass of the circulation
It is for ground high-quality serosity → AV10 valves → send mud pipeline → AV3 valves → mud line → floor treatment, other in two machine of the circulation
The flow direction on road is ground high-quality serosity → AV10 valves → send mud pipeline → AV1 valves → AV5 valves → discharge pipeline → floor treatment, described
The flow direction for circulating three machine internal bypass is ground high-quality serosity → AV10 valves → send mud pipeline → AV4 valves → AV2 valves → mud line
→ floor treatment, the flow direction of four machine internal bypass of the circulation be ground high-quality serosity → AV10 valves → send mud pipeline → AV1 valves →
MV3 valves → AV2 valves → mud line → floor treatment.
As the further improvement of above-mentioned technical proposal, in step 3）In, the viscosity of the mud irrigated toward Tu Cang is not
Less than 22S, its proportion is 1.13 ~ 1.16g/cm.
As the further improvement of above-mentioned technical proposal, in step 3）In, the perfusion flow direction of the mud is ground high-quality
Serosity → AV10 valves → send mud pipeline → CV1 valves → MV1 valves → Tu Cang.
As the further improvement of above-mentioned technical proposal, in step 5）Described in machine internal bypass circulation be ground high-quality serosity
→ AV10 valves → send mud pipeline → AV1 valves → MV3 valves → AV2 valves → mud line → floor treatment.
As the further improvement of above-mentioned technical proposal, in step 6）In, the inverse flow direction for sending circulation to bring down stocks is ground
High-quality serosity → AV10 valves → send mud pipeline → AV4 valves → MV2 valves → Tu Cang → MV1 valves → AV5 valves → mud line → ground
Process.
As the further improvement of above-mentioned technical proposal, in step 6）In, start screw machine, by screw machine by native storehouse
Bulky grain stone discharge.
As the further improvement of above-mentioned technical proposal, in step 7）In, the mud flow of the automatic pressure-maintaining pattern is
Ground high-quality serosity → AV10 valves → send mud pipeline → CV1 valves → MV1 valves → Tu Cang.
As the further improvement of above-mentioned technical proposal, in step 8）In, the circulation is just sending the flow direction of digging circulation to be
Ground high-quality serosity → AV10 valves → send mud pipeline → AV1 valves → MV1 valves → Tu Cang → MV2 valves → AV2 → mud line → ground
Face is processed.
The invention has the beneficial effects as follows：
（1）Any part need not be dismounted, easily and fast, safely.
（2）After switching to muddy water boring mode, it is broken that the conveying worm that shield machine itself is configured can be used as exclusion bulky grain
Stone, compares with the quarrying case of traditional muddy water pattern shield machine configuration, without crushing large particle, does not result in the stifled of mud channel
Plug.
Description of the drawings
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to making needed for embodiment description
Accompanying drawing is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present invention, rather than is all implemented
Example, those skilled in the art on the premise of not paying creative work, can be designed with obtaining other according to these accompanying drawings
Scheme and accompanying drawing.
Fig. 1 is the schematic diagram that a machine internal bypass is circulated in the present invention；
Fig. 2 is the schematic diagram that two machine internal bypass are circulated in the present invention；
Fig. 3 is the schematic diagram that three machine internal bypass are circulated in the present invention；
Fig. 4 is the schematic diagram that four machine internal bypass are circulated in the present invention；
The flow graph of mud when Fig. 5 is automatic pressure-maintaining pattern in the present invention；
Fig. 6 is the inverse schematic diagram for sending circulation to bring down stocks in the present invention；
Fig. 7 is the schematic diagram that circulation is just sending digging circulation in the present invention.
Specific embodiment
The technique effect of the design, concrete structure and generation of the present invention is carried out clearly below with reference to embodiment and accompanying drawing
Chu, it is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this
Bright a part of embodiment, rather than whole embodiments, based on embodiments of the invention, those skilled in the art is not paying
The other embodiment obtained on the premise of creative work, belongs to the scope of protection of the invention.In addition, be previously mentioned in text
All connection/annexations, not singly refer to that component directly connects, and refer to and can be added deduct by adding according to the situation that is embodied as
Few couple auxiliary, constitutes more excellent draw bail.
With reference to Fig. 1～Fig. 7, the method that shield machine switches to muddy water boring mode by soil pressure boring mode, including following step
Suddenly,
1）The unearthed gate of screw machine is closed, screw machine is rotated forward, makes screw machine be internally formed effectively soil plug；
2）Start Slurry treatment machine, open and adjust valve group, starter motor internal bypass circulation；
3）Recover interlocking, the hand sluice valve before the row's of opening mud valve is opened automatic pressure-maintaining pattern, progressively opens phase manually
The valve answered, the filling mud toward in soil storehouse 12；
4）Start cutterhead, the soil body in storehouse be stirred using native storehouse stirring rod, cutterhead；
5）Machine internal bypass circulation is switched to, slow rotation cutterhead makes stirring abundant；
6）Switch to after standby internal bypass circulation is normal against sending circulation to bring down stocks, native storehouse 12 and pipeline are cleaned；
7）After native storehouse 12 and pipeline are normal, switch to, increase mud circulation, open automatic pressure-maintaining mould
Formula；
8）Switch to circulation and just sending digging circulation, complete the switching that soil pressure boring mode switches to muddy water boring mode.
It is further used as preferred embodiment, in step 2）In, the machine internal bypass circulation is divided into other in one machine of circulation
Road, two machine internal bypass of circulation, four machine internal bypass of three machine internal bypass of circulation and circulation；The flow direction of one machine internal bypass of the circulation is ground
Face high-quality 1 → AV10 of serosity valve 2 → send mud pipeline → AV3 3 → mud lines of valve → floor treatment, two machine internal bypass of the circulation
Flow direction be ground high-quality 1 → AV10 of serosity valve 2 → send mud pipeline → AV1 valve 4 → AV5,7 → discharge pipelines of valve → floor treatment, institute
The flow direction for stating three machine internal bypass of circulation is ground high-quality 1 → AV10 of serosity valve 2 → send mud pipeline → AV4 5 → AV2 of valve valves 6 → row
Mud pipeline → floor treatment, the flow direction of four machine internal bypass of the circulation be ground high-quality 1 → AV10 of serosity valve 2 → send mud pipeline →
AV1 valves 4 → MV3 valves → AV2 6 → mud lines of valve → floor treatment.
It is further used as preferred embodiment, in step 3）In, the viscosity toward the mud of soil storehouse 12 perfusion is not little
In 22S, its proportion is 1.13 ~ 1.16g/cm.
It is further used as preferred embodiment, in step 3）In, the perfusion of mud flow direction is ground high-quality serosity 1
→ AV10 valves 2 → send mud pipeline → CV1 8 → MV1 of valve valves 10 → native storehouse 12.
It is further used as preferred embodiment, in step 5）Described in machine internal bypass circulation be ground high-quality serosity 1 →
AV10 valves 2 → send mud pipeline → AV1 valve 4 → MV3 valve 9 → AV2,6 → mud lines of valve → floor treatment.
It is further used as preferred embodiment, in step 6）In, the inverse flow direction for sending storehouse circulation to laundry is ground high-quality
1 → AV10 of serosity valves 2 → send 11 → native storehouse of mud pipeline → AV4 5 → MV2 of valve valves, 12 → MV1 valve 10 → AV5,7 → mud lines of valve
→ floor treatment.
It is further used as preferred embodiment, in step 6）In, start screw machine, by screw machine by native storehouse 12
Bulky grain stone is discharged.
It is further used as preferred embodiment, in step 7）In, the mud flow of the automatic pressure-maintaining pattern is ground
High-quality 1 → AV10 of serosity valves 2 → send mud pipeline → CV1 8 → MV1 of valve valves 10 → native storehouse 12
It is further used as preferred embodiment, in step 8）In, it is ground that the circulation is just sending the flow direction of digging circulation
High-quality 1 → AV10 of serosity valves 2 → send 10 → native storehouse of mud pipeline → AV1 4 → MV1 of valve valves, 12 → MV2 valve 11 → AV2,6 → spoil disposals of valve
Pipeline → floor treatment.
The following is a preferred embodiment of the present invention.
（1）Select the position for pattern switching, preparation before switching.
Preparation includes：1. arrange adjustment valve group, corollary equipment to prepare；The all of mud from ground, tunnel, shield machine
Slurry pipeline and element are unobstructed normal.2. release screw machine interlocking；3. mud modulation, meets use requirement.
（2）The unearthed gate of screw machine is closed, screw machine is rotated forward, soil plug is made.
First arrange dregs in storehouse suitably outer, release interlocking and screw machine is rotated forward in the case where closing screw machine is unearthed gate,
Make screw machine be internally formed effectively soil plug, keep pressure P ± 10KPa in native storehouse 12（P is current support pressure value）.Screw machine turns
Fast 1.2rpm, screw machine soil pressure（Before）Pressure P+40KPa, screw machine soil pressure（Afterwards）Pressure P+30KPa.
（3）Start circulation, carry out bypass operation, it is ensured that the normal work of pipeline and mud disposal system, see accompanying drawing 1 ~ 4.
The open and-shut mode of mud, spoil disposal, bypass valve is sent to show on the touchscreen.
Concrete operation method：Start Slurry treatment machine, open and adjust valve group, start muddy water circulatory system.Mud flow：
Circulate a machine internal bypass：Ground high-quality 1 → AV10 of serosity valve 2 → send mud pipeline → AV3 3 → mud lines of valve → ground
Face is processed；Remaining pipeline valve group closure state.
Circulate two machine internal bypass：Ground high-quality 1 → AV10 of serosity valve 2 → send mud pipeline → AV1 valve 4 → AV5,7 → spoil disposals of valve
Pipe → floor treatment；Remaining pipeline valve group closure state.
Circulate three machine internal bypass：Ground high-quality 1 → AV10 of serosity valve 2 → send mud pipeline → AV4 valve 5 → AV2,6 → spoil disposals of valve
Pipeline → floor treatment；Remaining pipeline valve group closure state.
Circulate four machine internal bypass：Ground high-quality 1 → AV10 of serosity valve 2 → send mud pipeline → AV1 valve 4 → MV3,9 → AV2 of valve
6 → mud line of valve → floor treatment；Remaining pipeline valve group closure state.
（4）Recover interlocking, the hand sluice valve before the row's of opening mud valve opens automatic pressure-maintaining pattern.CV1 is opened progressively manually
Valve 8, toward soil storehouse 12 filling mud.See accompanying drawing 5, mud flow：Ground high-quality 1 → AV10 of serosity valve 2 → send mud pipeline → CV1 valves
8 → MV1 valves, 10 → native storehouse 12；
Mud requires index：Viscosity is not less than 22S（200ML funnels）, than weighing about 1.15g/cm.The native storehouse 12 of control is intrinsic pressure
Power P ± 10KPa, can be adjusted by the appropriate casting of screw machine.
（5）Start cutterhead, the soil body in storehouse be stirred using native storehouse stirring rod, cutterhead.Cutterhead slow rotation,
0.5rpm.Otch hydraulic pressure is adjusted to steady pressure by CV1 valves 8, and is adjusted by the appropriate casting of screw machine.
Main points：Cause out because of the change of dregs filling state in the change of state of soil, screw machine casting efficiency and storehouse
When the soil pressure in digging face changes, stablizing for excavation face soil pressure should be kept by increasing, subtracting screw machine rotating speed.Only by increasing, subtracting spiral shell
When rotation machine rotating speed can not tackle the soil pressure change of excavation face, by soil pressure in automatic pressure-maintaining mode stable storehouse.
（6）MV1 valves 10, MV2 valves 11 are closed, MV3 valves 9 are opened, four machine internal bypass of circulation are switched to, slow rotation cutterhead makes
Stirring is abundant.Circulation opens form：Ground high-quality 1 → AV10 of serosity valve 2 → send mud pipeline → AV1 valve 4 → MV3 valve 9 → AV2 valves
6 → mud line → floor treatment；Remaining pipeline valve group closure state.See accompanying drawing 4.
（7）Standby internal bypass is normal, opens MV1, MV2 valve 11, closes MV3 valves 9.Selection carries out inverse sending storehouse circulation, circulation to laundry
Unlatching form：Ground high-quality 1 → AV10 of serosity valve 2 → send 11 → native storehouse of mud pipeline → AV4 5 → MV2 of valve valves 12 → MV1 valve 10 →
AV5 7 → mud lines of valve → floor treatment；See accompanying drawing 6.
It is inverse to send storehouse circulation main points to laundry：
1. circulation system also has inverse recurrent state, when blocking or machine occurs in the pipeline between machine internal bypass and machine internal bypass
When blocking occurs in the interior spoil disposal mouth of pipe, when cannot wash logical by normal bypass, inverse recurrent state can be realized by bypass pipe, instead
Remove to flushing line and block.Inverse storehouse circulation of sending to laundry is selected to be exactly to wash the mouth of pipe blocked by dregs under logical soil pressure boring mode
Or the pipeline blocked by block stone.
2. cutterhead rotating speed 0.5rpm, inverse to send storehouse circulation to laundry, when negative pressure early warning value occur in spoil disposal stock pump P2 pumps, in storehouse on pressure
Rise.Now, 13 releasing pressure automatically of VE valves, returns machine internal bypass.See accompanying drawing 1.
3. standby internal bypass is normal, is switched to above-mentioned（6）、（7）, recover inverse and send storehouse circulation to laundry.Until inverse feeding storehouse, spoil disposal
Flow reaches normal driving flow value.
If the 3. larger block stone of granule, it is impossible to by arranging outside pipeline, using screw machine and double mode shield machine can be arranged on
On P0 pumps, by screw machine discharge.
Screw machine calculus removing principle one：Using P0 pumps, centre bore of the pipeline near base bearing is passed through, and increases native storehouse 12
Interior circulation flow, circular flow are bigger, are deposited in 12 bottom of native storehouse（Soil-discharging port）Native slag will be carried over native storehouse 12 sooner, help
Dregs is smoothly discharged, blocking is effectively prevented.
Screw machine calculus removing principle two：Screw machine plays a part of similar quarrying case.Using flexible screw machine, pound before closing
Door, the row's of carrying out bulky grain dregs.
（8）It is inverse send circulation bring down stocks it is normal after, switch to, increase mud circulation, see accompanying drawing 1.If now
There is negative pressure early warning value in P2 pumps, return machine internal bypass.Now may block for thick liquid discharge mouth or pipeline blockage：First check for judging stifled
Plug position, if being deposited in the native slag of 12 bottom of native storehouse（Or block stone）Result in blockage, then can take（7）.Carry out bypass again to wash
Pipe, will be arranged outside the debris in pipeline, as far as possible until just sending digging pattern normal.
（9）MV2 valves 11 are closed, automatic pressure-maintaining pattern is opened, switching muddy water boring mode is completed.See accompanying drawing 5, mud stream
To：Ground high-quality 1 → AV10 of serosity valve 2 → send mud pipeline → CV1 8 → MV1 of valve valves 10 → native storehouse 12.
（10）Circulation is just sending digging circulation, sees accompanying drawing 7, mud flow：Ground high-quality 1 → AV10 of serosity valve 2 → send mud pipe
10 → native storehouse of road → AV1 4 → MV1 of valve valves, 12 → MV2 valve 11 → AV2,6 → mud lines of valve → floor treatment.
（11）Normal muddy water boring mode
To ensure the seriality of switching operation and shortening handoff procedure, can be using in the effective drilling depth of an endless tube piece（With 1.5 meters
Or as a example by the section of jurisdiction of 1.2 meters of wide cuts）Inside complete, it is to avoid the job interruption that pipe sheet assembling brings, also, adjusted by control system
And management means, effective control ground settlement.
It is more than that the better embodiment to the present invention is illustrated, but the invention is not limited to the reality
Example is applied, those of ordinary skill in the art on the premise of without prejudice to spirit of the invention can also make a variety of equivalent modifications or replace
Change, the modification of these equivalents or replacement are all contained in the application claim limited range.
Claims (9)
1. the method that shield machine switches to muddy water boring mode by soil pressure boring mode, it is characterised in that：Comprise the following steps,
1）The unearthed gate of screw machine is closed, screw machine is rotated forward, makes screw machine be internally formed effectively soil plug；
2）Start Slurry treatment machine, open and adjust valve group, starter motor internal bypass circulation；
3）Recover interlocking, the hand sluice valve before the row's of opening mud valve is opened automatic pressure-maintaining pattern, progressively opens corresponding valve
Door, fills mud toward in soil storehouse；
4）Start cutterhead, the soil body in storehouse be stirred using native storehouse stirring rod, cutterhead；
5）Machine internal bypass circulation is switched to, slow rotation cutterhead makes stirring abundant；
6）Switch to after standby internal bypass circulation is normal against sending circulation to bring down stocks, Tu Cang and pipeline are cleaned；
7）After Tu Cang and pipeline are normal, switch to, increase mud circulation, open automatic pressure-maintaining pattern；
8）Switch to circulation and just sending digging circulation, complete the switching that soil pressure boring mode switches to muddy water boring mode.
2. the method that shield machine according to claim 1 switches to muddy water boring mode by soil pressure boring mode, its feature
It is：In step 2）In, the machine internal bypass circulation is divided in one machine internal bypass of circulation, two machine internal bypass of circulation, three machines of circulation
Four machine internal bypass of bypass and circulation；The flow direction of one machine internal bypass of the circulation is ground high-quality serosity → AV10 valves → send mud pipeline
→ AV3 valves → mud line → floor treatment, the flow direction of two machine internal bypass of the circulation be ground high-quality serosity → AV10 valves →
The flow direction of mud pipeline → AV1 valves → AV5 valves → discharge pipeline → floor treatment, three machine internal bypass of the circulation is sent to starch for ground high-quality
Liquid → AV10 valves → send mud pipeline → AV4 valves → AV2 valves → mud line → floor treatment, the stream of four machine internal bypass of the circulation
To for ground high-quality serosity → AV10 valves → send mud pipeline → AV1 valves → MV3 valves → AV2 valves → mud line → floor treatment.
3. the method that shield machine according to claim 1 switches to muddy water boring mode by soil pressure boring mode, its feature
It is：In step 3）In, the viscosity toward the mud of Tu Cang perfusions is not less than 22S, and its proportion is 1.13 ~ 1.16g/cm.
4. the method that shield machine according to claim 1 switches to muddy water boring mode by soil pressure boring mode, its feature
It is：In step 3）In, the perfusion of mud flow direction for ground high-quality serosity → AV10 valves → send mud pipeline → CV1 valves →
MV1 valves → Tu Cang.
5. the method that shield machine according to claim 1 switches to muddy water boring mode by soil pressure boring mode, its feature
It is：In step 5）Described in machine internal bypass circulation be ground high-quality serosity → AV10 valves → send mud pipeline → AV1 valves → MV3 valves
→ AV2 valves → mud line → floor treatment.
6. the method that shield machine according to claim 1 switches to muddy water boring mode by soil pressure boring mode, its feature
It is：In step 6）In, the inverse flow direction for sending circulation to bring down stocks is ground high-quality serosity → AV10 valves → send mud pipeline → AV4 valves
→ MV2 valves → Tu Cang → MV1 valves → AV5 valves → mud line → floor treatment.
7. the method that shield machine according to claim 1 switches to muddy water boring mode by soil pressure boring mode, its feature
It is：In step 6）In, start screw machine, the bulky grain stone in native storehouse is discharged by screw machine.
8. the method that shield machine according to claim 1 switches to muddy water boring mode by soil pressure boring mode, its feature
It is：In step 7）In, the mud flow of the automatic pressure-maintaining pattern be ground high-quality serosity → AV10 valves → send mud pipeline →
CV1 valves → MV1 valves → Tu Cang.
9. the method that shield machine according to claim 1 switches to muddy water boring mode by soil pressure boring mode, its feature
It is：In step 8）In, the circulation just sending the flow direction of digging circulation be ground high-quality serosity → AV10 valves → send mud pipeline →
AV1 valves → MV1 valves → Tu Cang → MV2 valves → AV2 valves → mud line → floor treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510091383.2A CN104790962B (en) | 2015-02-28 | 2015-02-28 | Method of switching earth pressure tunneling mode into muddy water tunneling mode for shield tunneling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510091383.2A CN104790962B (en) | 2015-02-28 | 2015-02-28 | Method of switching earth pressure tunneling mode into muddy water tunneling mode for shield tunneling machine |
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| CN104790962B true CN104790962B (en) | 2017-04-26 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150516B (en) * | 2016-08-30 | 2018-10-02 | 中国铁建重工集团有限公司 | Quarrying apparatus and its control method, development machine |
| CN107576477B (en) * | 2017-09-28 | 2024-05-07 | 中铁隧道局集团有限公司 | Slurry shield machine circulation system test device and matched test method |
| CN109630149B (en) * | 2018-12-21 | 2021-02-09 | 广州轨道交通建设监理有限公司 | Multi-mode shield constructs machine |
| 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 |
| CN112761650B (en) * | 2020-12-31 | 2022-07-15 | 中铁工程服务有限公司 | Double-mode shield muck treatment method |
| CN112780289B (en) * | 2020-12-31 | 2022-07-15 | 中铁工程服务有限公司 | Dual-mode shield muck treatment system |
| CN114165246A (en) * | 2021-12-08 | 2022-03-11 | 北京市市政四建设工程有限责任公司 | A mud-water pipeline for mud-water-earth-pressure dual-mode shield machine and using method |
| CN115788461B (en) * | 2022-12-16 | 2023-08-04 | 盾科工程装备有限公司 | Slurry suction type shield tunneling machine |
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| CN104790962A (en) | 2015-07-22 |
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Effective date of registration: 20180615 Address after: 528308 Lun Jiao Street office, Shunde District, Foshan, Guangdong, often teaches the first floor of E block 129229, Zhenxing Road, neighborhood committee. Patentee after: China Railway Hua tunnel joint heavy equipment Co., Ltd. Address before: 510620 9, Xingye Bank building, 101 Tianhe Road, Tianhe District, Guangzhou, Guangdong. Patentee before: China Tunnel Construction Co., Ltd. Guangdong |
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