CN106223965B - Shield machine and its control method - Google Patents
Shield machine and its control method Download PDFInfo
- Publication number
- CN106223965B CN106223965B CN201610770938.0A CN201610770938A CN106223965B CN 106223965 B CN106223965 B CN 106223965B CN 201610770938 A CN201610770938 A CN 201610770938A CN 106223965 B CN106223965 B CN 106223965B
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- pipe
- plasma discharge
- shield machine
- circulation
- discharge
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000002002 slurry Substances 0.000 claims abstract description 53
- 239000002689 soil Substances 0.000 claims abstract description 52
- 230000008676 import Effects 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000005192 partition Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 4
- 239000004575 stone Substances 0.000 description 9
- 230000000903 blocking effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002893 slag Substances 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
-
- 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
Landscapes
- 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 kind of shield machine and its control methods, and wherein shield machine includes: cutterhead；Tu Cang, Tu Cang are located at the rear side of cutterhead；Inlet pipe, the top for being connected to and being located at Tu Cang with Tu Cang into slurry outlet of inlet pipe；Discharge pipe, the plasma discharge import of discharge pipe are connected to and are located at the lower part of Tu Cang with Tu Cang；Screw conveyor, the input terminal of screw conveyor are stretched to the soil in native storehouse to be transported to outside Tu Cang in native storehouse, and input terminal is located at the lower section of plasma discharge import；Plasma discharge branch pipe, one end of plasma discharge branch pipe are connected to the output end of screw conveyor, and the other end is connected to discharge pipe；And belt conveyor, one end of belt conveyor are located at the position of the output end of screw conveyor.Shield machine according to the present invention, can be to avoid the heavy collection of native orlop portion dregs, the case where can not draining, cause stagnant row.
Description
Technical field
The present invention relates to constructing tunnel equipment technology fields, more particularly, to a kind of shield machine and its control method.
Background technique
The type of usual shield machine is adapted with geological conditions, for long distance construction, especially passes through geology feelings
Condition changes stratum greatly, and single mode shield machine has significant limitation.In the related technology, the muddy water soil pressure double mode shield used
Machine is in such a way that screw conveyor and mud channel coexist, when shield machine works under soil pressure mode, into, discharge pipe
Road is closed, and using screw conveyor deslagging, when working under muddy water mode, screw conveyor stops working, using discharge pipe
Road deslagging.Especially when being converted into the construction of muddy water mode, since screw conveyor is usually placed in shield body bottom, such plasma discharge
Pipeline is only capable of being arranged in lower section in shield body, is difficult the slag liquid that orlop portion is excavated in discharge, and due to the limitation of space layout, can not
Bottom install stone crusher, when for encountering the stratum containing ratchel, in addition can not deslagging, affect construction efficiency.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, the present invention mentions
A kind of shield machine out, the shield machine have the advantages that residue-discharge convenience.
The present invention also proposes that a kind of control method of shield machine, the control method of the shield machine are suitable for above-mentioned shield
Machine.
Shield machine according to an embodiment of the present invention, comprising: cutterhead；Tu Cang, the Tu Cang are located at the rear side of the cutterhead；Into
Slurry pipe, the top for being connected to and being located at the Tu Cang with the Tu Cang into slurry outlet of the inlet pipe；Discharge pipe, the discharge pipe
Plasma discharge import be connected to the Tu Cang and be located at the lower part of the Tu Cang；Screw conveyor, the input of the screw conveyor
End is stretched to the soil in the native storehouse to be transported to outside the Tu Cang in the native storehouse, and the input terminal is located at the plasma discharge
The lower section of import；One end of plasma discharge branch pipe, the plasma discharge branch pipe is connected to the output end of the screw conveyor, the other end and institute
State discharge pipe connection；And belt conveyor, one end of the belt conveyor are located at the output end of the screw conveyor
Position at.
Plasma discharge branch pipe, and plasma discharge is arranged by the output end in screw conveyor in shield machine according to an embodiment of the present invention
One end of branch pipe is connected to the output end of screw conveyor, and the other end is connected to discharge pipe, when shield machine is in muddy water mode, and
When the native orlop portion a large amount of dregs of heavy collection, screw conveyor can be opened, the dregs in native orlop portion is made to pass through screw conveyor and row
Slurry branch pipe is discharged in discharge pipe, and dregs is pumped on ground finally by slurry pump, can be collected to avoid native orlop portion dregs is heavy,
The case where can not draining, cause stagnant row.It, can also be by large-sized stone and mud simultaneously when encountering the stratum containing ratchel
Slurry is discharged by belt conveyor and plasma discharge branch pipe respectively, is avoided the heavy collection of native orlop portion stone, can not be drained, cause the feelings of stagnant row
Condition.In addition, under soil pressure mode, and when encountering water rich strata, can by screw conveyor by dregs by plasma discharge branch pipe and
Discharge pipe is delivered to ground, and preventing screw conveyor, there is a situation where gush.
According to some embodiments of the present invention, the plasma discharge branch pipe is equipped with branch pipe control valve.
According to some embodiments of the present invention, further includes: quarrying case, the quarrying case is located on the discharge pipe and described
The input end of quarrying case is connected to the plasma discharge branch pipe.
In some embodiments of the invention, further includes: first against circulation pipe, described first one end and institute against circulation pipe
Inlet pipe connection is stated, the other end is connected to the outlet end of the quarrying case；Second against circulation pipe, and described second against the one of circulation pipe
End be connected to the inlet pipe and described second against one end of circulation pipe positioned at described first against one end of circulation pipe close institute
The side into slurry outlet is stated, the other end is connected to the outlet end for quarrying case, and described second against the other end position of circulation pipe
In described first against circulation pipe the other end far from the plasma discharge import side；First against circulation control valve, and described first
Inverse circulation control valve be located at described first against control on circulation pipe described first against circulation pipe on-off；Second against loop control
Valve, described second against circulation control valve be located at described second against control on circulation pipe described second against circulation pipe on-off；First
Plasma discharge control valve, the first plasma discharge control valve are located at described first against described one end of circulation pipe and described second against circulation pipe
Described one end between；With the second plasma discharge control valve, the second plasma discharge control valve is located at described first against described in circulation pipe
The other end and described second is against between the other end of circulation pipe.
In some embodiments of the invention, further includes: bypass pipe, one end of the bypass pipe and the inlet pipe connect
Logical, the other end is connected to the discharge pipe.
In some embodiments of the invention, one end of the bypass pipe be located at the first plasma discharge control valve and it is described into
Starch pipe between slurry inlet, the other end of the bypass pipe is located at the plasma discharge of the second plasma discharge control valve and the discharge pipe
Between outlet.
In some embodiments of the invention, filter device is equipped in the quarrying case.
According to some embodiments of the present invention, further includes: third plasma discharge control valve, the third plasma discharge control valve are located at institute
It states between plasma discharge import and the other end of the plasma discharge branch pipe.
According to some embodiments of the present invention, output end of the one end of the plasma discharge branch pipe close to the screw conveyor.
In some embodiments of the invention, one end of the plasma discharge branch pipe is connected to the lower section of the output end.
The control method of shield machine according to an embodiment of the present invention, the shield machine are above-mentioned shield machine, the shield
Machine further includes bypass pipe, and one end of the bypass pipe is connected to the inlet pipe, and the other end is connected to the discharge pipe, the shield
Structure machine further includes first being connected to against circulation pipe and second against circulation pipe, described first against one end of circulation pipe with the inlet pipe,
The other end is connected to the discharge pipe, and described second is connected to against one end of circulation pipe with the inlet pipe and the second inverse circulation
One end of pipe was located at for the described first connecting close to the side into slurry outlet, the other end and discharge pipe against one end of circulation pipe
It is logical, and described second against circulation pipe the other end be located at described first against circulation pipe the other end far from the plasma discharge import
Side, the shield machine include soil pressure mode and muddy water mode,
When the shield machine is converted from the soil pressure mode to the muddy water mode, the control method includes:
S10: the shield machine stops driving, closes the ash gate of the output end of the screw conveyor, makes the spiral
Soil plug is formed inside conveyer；
S20: the shield machine bypass mode of operation, mud are entered after the bypass pipe by the inlet pipe through the row
Pipe discharge is starched, guarantees that mud channel is unobstructed normal；
S30: mud is added toward the Tu Cang using pressure maintaining mode, closes the bypass pipe, the mud is by described into slurry
Pipe enters in the native storehouse, is operated by gas pressure-retaining system to control the pressure balance of the Tu Cang；
S40: the Tu Cang full of inverse circulation pattern after mud, is switched to, and the mud enters institute by the inlet pipe
First is stated against in circulation pipe, then is flowed into the discharge pipe, is finally entered in the native storehouse, when being full of the mud in the native storehouse
When slurry, the mud is drained into the discharge pipe and is discharged against circulation pipe by the inlet pipe, described second, by the soil
Dregs carries out repeated flushing in storehouse, while making the cutterhead slow-speed of revolution operating to be stirred dregs, while opening releasing pressure automatically
Valve adjusts the support pressure；
S50: it after the inverse circulation pattern energy stable operation for a period of time, then switches to boring mode and is normally dug
Into the mud is entered in the native storehouse by the inlet pipe, and the mud is discharged through the discharge pipe；
When the shield machine is converted from the muddy water mode to the soil pressure mode, the control method includes:
T10: being reduced to 0.5rpm for the cutterhead revolving speed hereinafter, fltting speed is less than 15mm/min, and closing is described into slurry
Stop conveying mud into stock pump on pipe, plasma discharge is carried out with the inverse circulation pattern, by the discharge pipe during plasma discharge
The cooperation of slurry pump plasma discharge flow and the fltting speed balances the support pressure；
T20: the soil body that the knife cutting gets off enters the Tu Cang, and deposits to bottom, and the soil body slowly rises,
When the cutter head torque significantly increases, detect whether the gate valve at partition blocks, detection position is from low to high, it is ensured that the position
The gate valve it is completely plugged after detect again it is next whether block, until highest point the gate valve also occur it is completely plugged existing
As；
T30: the cutterhead stops rotating, and the shield machine stops promoting, and continues to open simultaneously with inverse circulation pattern plasma discharge
Automatic pressure-maintaining system balances the support pressure, until close the slurry pump after negative pressure occurs in the slurry pump, will it is described every
The gate valve is closed at plate.
T40: opening the ash gate of the screw conveyor, and aperture is not more than 20%, starts the cutterhead, the shield
Structure machine starts to promote, and starts the operation of the soil pressure mode, and the soil body in the soil storehouse passes through the screw conveyor and described
Belt conveyor is delivered to ground.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of shield machine according to an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the Tu Cang of shield machine according to an embodiment of the present invention.
Appended drawing reference:
Shield machine 100,
Cutterhead 1, native storehouse 2, partition 21,
Inlet pipe 3, into slurry outlet 31, into stock pump 32, into slurry inlet 33,
Discharge pipe 4, plasma discharge import 41, case 42 of quarrying, input end 421, outlet end 422, the second plasma discharge control valve
43, third plasma discharge control valve 44, slurry pump 45, plasma discharge branch pipe 46, branch pipe control valve 461, plasma discharge outlet 47,
Screw conveyor 5, input terminal 51, output end 52,
Bypass pipe 6, one end 61 of bypass pipe, the other end 62 of bypass pipe, by-passing valve 63,
First against circulation pipe 7, and first against one end of circulation pipe 71, first against circulation pipe the other end 72, first inverse follows
Ring control valve 73,
Second against circulation pipe 8, and second against one end of circulation pipe 81, second against circulation pipe the other end 82, second inverse follows
Ring control valve 83,
Belt conveyor 9.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings.Below with reference to
The embodiment of attached drawing description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Shield machine 100 according to an embodiment of the present invention is described below with reference to Fig. 1 and Fig. 2.
As depicted in figs. 1 and 2, shield machine 100 according to an embodiment of the present invention, including cutterhead 1, native storehouse 2, inlet pipe 3, row
Starch pipe 4, screw conveyor 5, plasma discharge branch pipe 46 and belt conveyor 9.
Specifically, native storehouse 2 is located at the rear side (rear side as shown in Figure 1) of cutterhead 1, and inlet pipe 3 exports 31 and soil into slurry
The connection of storehouse 2 and the top (top as shown in Figure 1) for being located at native storehouse 2, the plasma discharge import 41 of discharge pipe 4 is connected to native storehouse 2 and position
In the lower part (lower part as shown in Figure 1) in native storehouse 2, the input terminal 51 of screw conveyor 5 is stretched in native storehouse 2 with will be in native storehouse 2
Soil be transported to outside native storehouse 2, input terminal 51 is located at the lower section (lower section as shown in Figure 1) of plasma discharge import 41, plasma discharge branch pipe 46
One end (upper end as described in Figure 1) be connected to the output end 52 of screw conveyor 5, the other end (lower end as shown in Figure 1) with
Discharge pipe 4 is connected to, and one end (front end as shown in Figure 1) of belt conveyor 9 is located at the position of the output end 52 of screw conveyor 5
Place.
When soil pressure mode, cutterhead 1 cuts soil layer, cuts the dregs to get off and falls into native storehouse 2, then will by screw conveyor 5
Dregs is delivered on belt conveyor 9, then is transported to slag-soil truck and is transported to processing outside hole.When muddy water mode, into stock pump 32 by into
Pipe 3 is starched by slurry transportation into native storehouse 2, mud, which penetrates into, to be excavated in soil layer, and cutterhead 1 cuts soil layer, cuts the dregs to get off and falls
It buries in storehouse 2, then is pumped on ground by slurry pump 45 by discharge pipe 4.Because the plasma discharge import 41 of discharge pipe 4 need to avoid bottom
Screw conveyor 5 input terminal 51, therefore 41 position of plasma discharge import is higher, be easy to cause under native storehouse 2 and sinks collection dregs, can not
Drain, the case where stagnant row occurs.At this point it is possible to rotate screw conveyor 5, the dregs of the heavy collection in native 2 bottom of storehouse is delivered to output
End 52, then dregs is pumped on ground by plasma discharge by plasma discharge branch pipe 46.Meanwhile when encountering the stratum containing ratchel,
Biggish stone can be exported by belt conveyor 9 to ground, and dregs and mud etc. can be output to by plasma discharge branch pipe 46
Discharge pipe 4, then export to ground.
Meanwhile when shield machine 100 is using soil pressure mode, and when encountering water rich strata, screw conveyor 5 is difficult to form soil
Plug, screw conveyor 5 are easy to appear the case where gushing, at this point it is possible to which the dregs in screw conveyor 5 is passed through plasma discharge branch pipe 46
It is discharged in discharge pipe 4, and ground is expelled to by slurry pump 45.
Plasma discharge branch pipe is arranged by the output end 52 in screw conveyor 5 in shield machine 100 according to an embodiment of the present invention
46, and one end (upper end as shown in Figure 1) of plasma discharge branch pipe 46 is connected to the output end 52 of screw conveyor 5, the other end is (as schemed
Lower end shown in 1) it is connected to discharge pipe 4, when shield machine 100 is in muddy water mode, and native 2 bottom of storehouse is heavy when collecting a large amount of dregs,
Screw conveyor 5 can be opened, the dregs of native 2 bottom of storehouse is made to be discharged to discharge pipe 4 by screw conveyor 5 and plasma discharge branch pipe 46
It is interior, dregs is pumped on ground finally by slurry pump 45, can not drain, cause to avoid the heavy collection of native 2 bottom dregs of storehouse
The case where stagnant row.Simultaneously when encountering the stratum containing ratchel, large-sized stone and mud can also be passed through skin respectively
Band conveyer 9 and plasma discharge branch pipe 46 are discharged, and the heavy collection of native 2 bottom stone of storehouse are avoided, the case where can not draining, cause stagnant row.In addition,
Under soil pressure mode, and when encountering water rich strata, dregs can be passed through by plasma discharge branch pipe 46 and discharge pipe by screw conveyor 5
4 are delivered to ground, and preventing screw conveyor 5, there is a situation where gush.
In some embodiments of the invention, as shown in Figure 1, plasma discharge branch pipe 46 is equipped with branch pipe control valve 461.As a result,
When shield machine 100 is in soil pressure mode, branch pipe control valve 461 can be closed, prevent dregs from entering in plasma discharge branch pipe 46 and block up
Plug plasma discharge branch pipe 46 and when shield machine 100 being caused to be converted into muddy water mode by soil pressure mode plasma discharge branch pipe 46 can not plasma discharge, thus
Guarantee the reliability that shield machine 100 works.
In some embodiments of the invention, as shown in Figure 1, shield machine 100 further includes quarrying case 42, quarrying case 42 is located at
On discharge pipe 4 and the input end 421 for case 42 of quarrying is connected to plasma discharge branch pipe 46.Quarrying case 42 can will be greater than slurry pump 45 and pass through
The stone of partial size sinks to the bottom, and prevents blocking slurry pump 45, to guarantee the reliability that shield machine 100 works.
In some embodiments of the invention, it is equipped with filter device in quarrying case 42, filter device can be by big grain as a result,
The stone of diameter filters out, and prevents large-sized stone blocking slurry pump 45 from improving to guarantee the normal operation of shield machine 100
The reliability that shield machine 100 works.
Further, as shown in Figure 1, shield machine 100 further includes first inverse against circulation pipe 7, second against circulation pipe 8, first
Circulation control valve 73, second is against circulation control valve 83, the first plasma discharge control valve and the second plasma discharge control valve 43.Specifically, first
One end 71 of inverse circulation pipe 7 is connected to inlet pipe 3, and the other end 72 is connected to the outlet end 422 of quarrying case 42；Second against circulation pipe
8 one end 81 is connected to inlet pipe 3 and second is located at first against the close of one end of circulation pipe 7 71 against one end of circulation pipe 8 81
Into slurry outlet 31 side, the other end 82 with quarry case 42 outlet end 422 be connected to, and second against circulation pipe 8 the other end 82
Positioned at first against circulation pipe 7 the other end 72 separate plasma discharge import 41 side；First is located at first against circulation control valve 73
Against the on-off of circulation pipe 7, second is located at second against controlling on circulation pipe 8 against circulation control valve 83 for control first on inverse circulation pipe 7
Second against circulation pipe 8 on-off；First plasma discharge control valve is located at first against one end of circulation pipe 7 71 and second against circulation pipe 8
Between one end 81, the second plasma discharge control valve 43 be located at first against circulation pipe 7 the other end 72 and second against circulation pipe 8 the other end
Between 82.
When shield machine 100 carries out inverse circulation pattern, the first plasma discharge control valve and the second plasma discharge control valve 43 can be closed,
First can open against circulation control valve 73 and second against circulation control valve 83, into stock pump 32 by mud pumping to inlet pipe 3,
And flowed into discharge pipe 4 by first against circulation pipe 7, it then flows into native storehouse 2, when the mud in native storehouse 2 reaches a certain amount of,
Mud flows to second against in circulation pipe 8 by inlet pipe 3, is discharged finally by slurry pump 45.The inverse circulation pattern of shield machine 100
Native storehouse 2 and pipeline can be made adequately to be cleaned.
Further, as shown in Figure 1, shield machine 100 further includes bypass pipe 6, one end 61 of bypass pipe 6 and inlet pipe 3
Connection, the other end 62 are connected to discharge pipe 4.Bypass pipe 6 can stablize mud stream when the various boring modes of shield machine 100 switch
Amount, or uses in segment assembly, does not need to stop muddy water circulation system, into stock pump 32 by mud pumping to inlet pipe 3, so
It flows into bypass pipe 6 afterwards, then flows to discharge pipe 4 out of bypass pipe 6, be discharged by slurry pump 45.
Specifically, as shown in Figure 1, one end 61 of bypass pipe 6 be located at the first plasma discharge control valve and inlet pipe 3 into slurry inlet
Between 33, the other end 62 is located between the second plasma discharge control valve 43 and the plasma discharge outlet 47 of discharge pipe 4.As a result, when shield machine 100
When carrying out bypass mode, the first plasma discharge control valve, the second plasma discharge control valve 43, first can be closed against circulation control valve 73 and the
Two against circulation control valve 83, at this point, all passing through bypass pipe 6 into the mud that stock pump 32 is pumped in inlet pipe 3 flows to discharge pipe
4, and ground is pumped to by slurry pump 45, it can enter to avoid mud in native storehouse 2, consequently facilitating shield machine 100 stablizes mud
Flow.
In some embodiments of the invention, as shown in Figure 1, shield machine 100 further includes third plasma discharge control valve 44, third
Plasma discharge control valve 44 is located between plasma discharge import 41 and the other end (lower end as shown in Figure 1) of plasma discharge branch pipe 46, works as shield machine
100 in muddy water mode, and when opening screw conveyor 5 dregs of the heavy collection in native 2 bottom of storehouse is discharged, can be by third plasma discharge control valve
44 close, and branch pipe control valve 461 is opened, and the dregs of the heavy collection in native 2 bottom of storehouse is output to screw conveyor by screw conveyor 5
Then 5 output end 52 is discharged in discharge pipe 4 by plasma discharge branch pipe 46, and dregs is pumped to ground by slurry pump 45
On.During can preventing plasma discharge, mud dregs etc. flows back into native storehouse 2 again after passing through plasma discharge branch pipe 46, thus the row of raising
The efficiency of slurry.
In some embodiments of the invention, one end (upper end as shown in Figure 1) of plasma discharge branch pipe 46 is close to helical feed
The output end 52 of machine 5.It is discharged thus, it is possible to which the mud in screw conveyor 5 is all passed through plasma discharge branch pipe 46.Further,
As shown in Figure 1, one end (upper end as shown in Figure 1) of plasma discharge branch pipe 46 is connected to the lower section of output end 52, helical feed as a result,
Mud and dregs in machine 5 can be transported in discharge pipe 4 by plasma discharge branch pipe 46, and be pumped dregs by slurry pump 45
To ground.
The control method of shield machine 100 according to an embodiment of the present invention is described below with reference to Fig. 1 and Fig. 2.Wherein, shield machine
100 include two kinds of operating modes of soil pressure mode and muddy water mode.
Shield machine 100 further includes bypass pipe 6, and one end 61 of bypass pipe 6 is connected to inlet pipe 3, the other end 62 and discharge pipe 4
Connection, shield machine 100 further include first against circulation pipe 7 and second against circulation pipe 8, first against one end of circulation pipe 7 71 with into slurry
Pipe 3 is connected to, and the other end 72 be connected to discharge pipe 4, and second is connected to against one end of circulation pipe 8 81 with inlet pipe 3 and second against recycling
One end 81 of pipe 8 is located at first against one end of circulation pipe 7 71 close to the side into slurry outlet 31, the other end 82 and discharge pipe 4
Connection, and second against circulation pipe 8 the other end 82 be located at first against circulation pipe 7 the other end 72 separate plasma discharge import 41 one
Side,
When shield machine 100 is converted from soil pressure mode to muddy water mode, control method includes:
S10: shield machine 100 stops driving, closes the ash gate of the output end 52 of screw conveyor 5, makes screw conveyor 5
Inside forms soil plug；
S20: 100 bypass mode of operation of shield machine, mud are entered after bypass pipe 6 by inlet pipe 3 and are discharged through discharge pipe 4,
Guarantee that mud channel is unobstructed normal；
S30: mud is added toward native storehouse 2 using pressure maintaining mode, closes bypass pipe 6, mud enters native storehouse 2 by inlet pipe 3
It is interior, it is operated by gas pressure-retaining system to control the pressure balance in native storehouse 2；
S40: after native storehouse 2 is full of mud, it is switched to inverse circulation pattern, mud enters first against circulation pipe 7 by inlet pipe 3
It is interior, then flow into discharge pipe 4, it finally enters in native storehouse 2, when being full of mud in native storehouse 2, mud is inverse by inlet pipe 3, second
Circulation pipe 8 is drained into discharge pipe 4 and is discharged, and dregs in native storehouse 2 is carried out repeated flushing, while operate 1 slow-speed of revolution of cutterhead
To be stirred dregs, while automatic pressure relief valve is opened to adjust native 2 pressure of storehouse；
S50: after inverse circulation pattern energy stable operation for a period of time, then switching to boring mode and normally tunneled, mud
Slurry is entered in native storehouse 2 by inlet pipe 3, and mud is discharged through discharge pipe 4；
When shield machine 100 is converted from muddy water mode to soil pressure mode, control method includes:
T10: being reduced to 0.5rpm for 1 revolving speed of cutterhead hereinafter, fltting speed is closed on inlet pipe 3 less than 15mm/min
Stop conveying mud into stock pump 32, plasma discharge is carried out with inverse circulation pattern, passes through 45 plasma discharge of slurry pump on discharge pipe 4 during plasma discharge
The cooperation of flow and fltting speed balances native 2 pressure of storehouse；
T20: the soil body that cutterhead 1 is cut enters native storehouse 2, and deposits to bottom, and the soil body slowly rises, when cutterhead 1 is turned round
When square significantly increases, detect whether the gate valve at partition 21 blocks, detection position is from low to high, it is ensured that the gate valve of the position is complete
Detected again after blocking it is next whether block, until also there is completely plugged phenomenon in the gate valve of highest point；
It should be noted that illustrating that the mud at the position has been drained off after the gate valve when the position is blocked.
T30: cutterhead 1 stops rotating, and shield machine 100 stops promoting, and continues with inverse circulation pattern plasma discharge, while opening automatic
Pressure-retaining system balances 2 pressure of native storehouse, until closing slurry pump 45 and inlet pipe 3 and discharge pipe 4 after negative pressure occurs in slurry pump 45
On all control valves, gate valve at partition is closed.
T40: opening the ash gate of screw conveyor 5, and aperture is not more than 20%, starts cutterhead 1, and shield machine 100 starts to push away
Into starting the operation of soil pressure mode, the soil body in native storehouse 2 is delivered to ground by screw conveyor 5 and belt conveyor 9.
Specifically, the controlling party of the shield machine 100 below with reference to Fig. 1-Fig. 2 description accord to a specific embodiment of that present invention
Method.
When shield machine 100 is converted from soil pressure mode to muddy water mode, control method includes:
S10: shield machine 100 stops driving, closes the ash gate of the output end 52 of screw conveyor 5, makes screw conveyor 5
Inside forms soil plug；
S20: 100 bypass mode of operation of shield machine can close the first plasma discharge control valve, the second plasma discharge control valve 43,
One against circulation control valve 73 and second against circulation control valve 83, at this point, it is all logical to be pumped to the mud in inlet pipe 3 into stock pump 32
It crosses bypass pipe 6 and flows to discharge pipe 4, and ground is pumped to by slurry pump 45, guarantee that mud channel is unobstructed normal；
S30: mud is added toward native storehouse 2 using pressure maintaining mode, by-passing valve 63, first can be closed against 73 and of circulation control valve
Second, against circulation control valve 83, opens the first plasma discharge control valve, and mud is entered in native storehouse 2 by inlet pipe 3, passes through gas pressure maintaining
System operatio controls the pressure balance in native storehouse 2；
S40: after native storehouse 2 is full of mud, inverse circulation pattern, the first plasma discharge control valve and the second plasma discharge control valve 43 are switched to
It can close, first can open control valve 44 against circulation control valve 73, second against circulation control valve 83 and third row, into slurry
Pump 32 flows into discharge pipe 4 by mud pumping to inlet pipe 3, and by first against circulation pipe 7, then flows into native storehouse 2, when
When mud in native storehouse 2 reaches a certain amount of, mud flows to second against in circulation pipe 8, finally by slurry pump 45 by inlet pipe 3
Dregs in native storehouse 2 is carried out repeated flushing by discharge, while making 1 slow-speed of revolution of cutterhead operating to be stirred dregs, while opening certainly
Dynamic relief valve adjusts native 2 pressure of storehouse；
S50: after inverse circulation pattern energy stable operation for a period of time, then switching to boring mode and normally tunneled, and closes
First is closed against circulation control valve 73 and second against circulation control valve 83, mud is entered in native storehouse 2 by inlet pipe 3, and through discharge pipe 4
Mud is discharged；
When shield machine 100 is converted from muddy water mode to soil pressure mode, control method includes:
T10: being reduced to 0.5rpm for 1 revolving speed of cutterhead hereinafter, fltting speed is closed on inlet pipe 3 less than 15mm/min
Stop conveying mud into stock pump 32, closes third row for control valve 44, open second against circulation control valve 83, with inverse circulation pattern
Plasma discharge is carried out, the mud in native storehouse 2 is discharged into second against in circulation pipe 8 by inlet pipe 3, and is discharged through discharge pipe 4, during plasma discharge
Native 2 pressure of storehouse is balanced by the cooperation of 45 plasma discharge flow of slurry pump and fltting speed on discharge pipe 4；
T20: the soil body that cutterhead 1 is cut enters native storehouse 2, and deposits to bottom, and the soil body slowly rises, when cutterhead 1 is turned round
When square significantly increases, detect whether the gate valve at partition 21 blocks, detection position is from low to high, it is ensured that the gate valve of the position is complete
Detected again after blocking it is next whether block, until also there is completely plugged phenomenon in the gate valve of highest point；
It should be noted that illustrating that the mud at the position has been drained off after the gate valve when the position is blocked.
T30: cutterhead 1 stops rotating, and shield machine 100 stops promoting, and continues with inverse circulation pattern plasma discharge, while opening automatic
Pressure-retaining system balances 2 pressure of native storehouse, until closing slurry pump 45 and inlet pipe 3 and discharge pipe 4 after negative pressure occurs in slurry pump 45
On all control valves, gate valve at partition is also switched off.
T40: opening the ash gate of screw conveyor 5, and aperture is not more than 20%, starts cutterhead 1, and shield machine 100 starts to push away
Into starting the operation of soil pressure mode, the soil body in native storehouse 2 is delivered to ground by screw conveyor 5 and belt conveyor 9.
The phenomenon that row's of should be noted gate is gushed during this period, can improve dregs reduces risk of gushing.
In the description of the present invention, it is to be understood that, term " center ", " length ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "top", "bottom" "inner", "outside" be based on the orientation or positional relationship shown in the drawings, be only for
Convenient for the description present invention and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side
Position is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second "
It is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicates indicated technical characteristic
Quantity." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one of the features.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected or can communicate each other；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly.For this field
For those of ordinary skill, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (11)
1. a kind of shield machine characterized by comprising
Cutterhead；
Tu Cang, the Tu Cang are located at the rear side of the cutterhead；
Inlet pipe, the top for being connected to and being located at the Tu Cang with the Tu Cang into slurry outlet of the inlet pipe；
Discharge pipe, the plasma discharge import of the discharge pipe are connected to and are located at the lower part of the Tu Cang with the Tu Cang；
Screw conveyor, the input terminal of the screw conveyor stretch in the native storehouse to transport the soil in the native storehouse
Outside to the Tu Cang, the input terminal is located at the lower section of the plasma discharge import；
One end of plasma discharge branch pipe, the plasma discharge branch pipe is connected to the output end of the screw conveyor, the other end and the plasma discharge
Pipe connection；With
Belt conveyor, one end of the belt conveyor are located at the position of the output end of the screw conveyor.
2. shield machine according to claim 1, which is characterized in that the plasma discharge branch pipe is equipped with branch pipe control valve.
3. shield machine according to claim 1, which is characterized in that further include:
Quarrying case, the quarrying case is located on the discharge pipe and the input end of the quarrying case is connected to the plasma discharge branch pipe.
4. shield machine according to claim 3, which is characterized in that further include:
First is connected to against one end of circulation pipe with the inlet pipe against circulation pipe, described first, the other end and the quarrying case
Outlet end connection；
Second against circulation pipe, and described second is connected to against one end of circulation pipe with the inlet pipe and described second against the one of circulation pipe
End is located at described first against one end of circulation pipe close to the side into slurry outlet, the outlet of the other end and the quarrying case
End connection, and described second against circulation pipe the other end be located at described first against circulation pipe the other end far from the plasma discharge into
The side of mouth；
First against circulation control valve, and described first against circulation control valve to be located at described first inverse against controlling described first on circulation pipe
The on-off of circulation pipe；
Second against circulation control valve, and described second against circulation control valve to be located at described second inverse against controlling described second on circulation pipe
The on-off of circulation pipe；
First plasma discharge control valve, the first plasma discharge control valve are located at described first against described one end of circulation pipe and described second
Between described one end of inverse circulation pipe；With
Second plasma discharge control valve, the second plasma discharge control valve are located at described first against the other end of circulation pipe and described
Two against between the other end of circulation pipe.
5. shield machine according to claim 4, which is characterized in that further include:
Bypass pipe, one end of the bypass pipe are connected to the inlet pipe, and the other end is connected to the discharge pipe.
6. shield machine according to claim 5, which is characterized in that one end of the bypass pipe is located at the first plasma discharge control
Valve processed and the inlet pipe between slurry inlet, the other end of the bypass pipe is located at the second plasma discharge control valve and described
Between the plasma discharge outlet of discharge pipe.
7. shield machine according to claim 3, which is characterized in that be equipped with filter device in the quarrying case.
8. shield machine according to claim 1, which is characterized in that further include:
Third plasma discharge control valve, the third plasma discharge control valve be located at the plasma discharge import and the plasma discharge branch pipe the other end it
Between.
9. shield machine according to claim 1, which is characterized in that one end of the plasma discharge branch pipe is close to the helical feed
The output end of machine.
10. shield machine according to claim 9, which is characterized in that one end of the plasma discharge branch pipe and the output end
Lower section connection.
11. a kind of control method of shield machine, which is characterized in that the shield machine is according to any one of claim 1-10 institute
The shield machine stated, the shield machine further include bypass pipe, and one end of the bypass pipe is connected to the inlet pipe, the other end and institute
Discharge pipe connection is stated,
The shield machine further includes first against circulation pipe and second against circulation pipe, described first against circulation pipe one end and it is described into
Pipe connection is starched, the other end is connected to the discharge pipe, and described second is connected to against one end of circulation pipe with the inlet pipe and described
Second is located at described first against one end of circulation pipe close to the side into slurry outlet against one end of circulation pipe, the other end with
Discharge pipe connection, and described second against circulation pipe the other end be located at described first against circulation pipe the other end far from the row
The side of slurry inlet,
The shield machine includes soil pressure mode and muddy water mode,
When the shield machine is converted from the soil pressure mode to the muddy water mode, the control method includes:
S10: the shield machine stops driving, closes the ash gate of the output end of the screw conveyor, makes the helical feed
Soil plug is formed inside machine；
S20: the shield machine bypass mode of operation, mud are entered after the bypass pipe by the inlet pipe through the discharge pipe
Discharge guarantees that mud channel is unobstructed normal；
S30: adding mud toward the Tu Cang using pressure maintaining mode, close the bypass pipe, the mud by the inlet pipe into
Enter into the native storehouse, is operated by gas pressure-retaining system to control the pressure balance of the Tu Cang；
S40: the Tu Cang full of after mud, being switched to inverse circulation pattern, and the mud enters described the by the inlet pipe
One against in circulation pipe, then flows into the discharge pipe, finally enters in the native storehouse, when being full of the mud in the native storehouse
When, the mud is drained into the discharge pipe and is discharged against circulation pipe by the inlet pipe, described second, by the Tu Cang
Interior dregs carries out repeated flushing, while making the cutterhead slow-speed of revolution operating to be stirred dregs, while opening automatic pressure relief valve
To adjust the support pressure；
S50: after the inverse circulation pattern energy stable operation for a period of time, then switching to boring mode and normally tunneled, institute
It states mud to be entered in the native storehouse by the inlet pipe, and the mud is discharged through the discharge pipe；
When the shield machine is converted from the muddy water mode to the soil pressure mode, the control method includes:
T10: being reduced to 0.5rpm for the cutterhead revolving speed hereinafter, fltting speed is closed on the inlet pipe less than 15mm/min
Stop conveying mud into stock pump, with the inverse circulation pattern progress plasma discharge, pass through the plasma discharge on the discharge pipe during plasma discharge
The cooperation of plasma discharge flow and the fltting speed is pumped to balance the support pressure；
T20: the soil body that the knife cutting gets off enters the Tu Cang, and deposits to bottom, and the soil body slowly rises, and works as institute
When stating cutter head torque and significantly increasing, detect whether the gate valve at partition blocks, detection position is from low to high, it is ensured that the institute of the position
State gate valve it is completely plugged after detect again it is next whether block, until also there is completely plugged phenomenon in the gate valve of highest point；
T30: the cutterhead stops rotating, and the shield machine stops promoting, and continues with inverse circulation pattern plasma discharge, while opening automatic
Pressure-retaining system balances the support pressure, until the slurry pump is closed, at the partition after negative pressure occurs in the slurry pump
The gate valve is closed；
T40: opening the ash gate of the screw conveyor, and aperture is not more than 20%, starts the cutterhead, the shield machine
Start to promote, start the operation of the soil pressure mode, the soil body in the soil storehouse passes through the screw conveyor and the belt
Conveyer is delivered to ground.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610770938.0A CN106223965B (en) | 2016-08-30 | 2016-08-30 | Shield machine and its control method |
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| CN201610770938.0A CN106223965B (en) | 2016-08-30 | 2016-08-30 | Shield machine and its control method |
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| CN106223965B true CN106223965B (en) | 2019-01-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107218052A (en) * | 2017-07-13 | 2017-09-29 | 合肥引力波数据科技有限公司 | A kind of shield machine tunnels soil analysis system |
| CN109281685B (en) * | 2017-07-21 | 2024-03-12 | 中国铁建重工集团股份有限公司 | Step-by-step decompression type shield tunneling machine |
| CN107989629A (en) * | 2017-12-27 | 2018-05-04 | 中铁工程装备集团有限公司 | A kind of shield machine dreg removing system and the shield machine with dreg removing system |
| CN109458191B (en) * | 2018-12-28 | 2024-05-24 | 中铁工程装备集团有限公司 | Dual-mode shield tunneling machine dregs conveying system |
| CN109899083A (en) * | 2019-04-16 | 2019-06-18 | 广东华坤建设集团有限公司 | Excavator Drainage rock method under the conditions of restricted clearance |
| CN110306993A (en) * | 2019-08-09 | 2019-10-08 | 中铁电气化局集团有限公司 | It is a kind of suitable for it is anhydrous and drift cobble geology shield construction method and equipment |
| 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 |
| CN112696202A (en) * | 2020-12-29 | 2021-04-23 | 广州轨道交通建设监理有限公司 | Mud circulation, sediment and thick liquid level control system under TBM mode |
| CN116025374A (en) * | 2023-01-04 | 2023-04-28 | 中交第二航务工程局有限公司 | Soil pressure-muddy water dual-mode shield deslagging construction method based on screw conveyor |
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Address after: 410100 No. 88 East 7 Line of Changsha Economic and Technological Development Zone, Hunan Province Patentee after: China Railway Construction Heavy Industry Co.,Ltd. Address before: 410100 Changsha economic and Technological Development Zone, Hunan, No. 88 East Road, No. seven Patentee before: China Railway Construction Heavy Industry Co.,Ltd. |