CN106593456A - Method for setting shield tunneling machine free in water-rich sand cobble stratum due to stuck cutter - Google Patents
Method for setting shield tunneling machine free in water-rich sand cobble stratum due to stuck cutter Download PDFInfo
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- CN106593456A CN106593456A CN201611121888.XA CN201611121888A CN106593456A CN 106593456 A CN106593456 A CN 106593456A CN 201611121888 A CN201611121888 A CN 201611121888A CN 106593456 A CN106593456 A CN 106593456A
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- steel pipe
- shield machine
- cutterhead
- poverty
- cutter head
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Classifications
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- 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
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
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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
Provided is a method for setting a shield tunneling machine free in a water-rich sand cobble stratum due to a stuck cutter. The method comprises following steps: step 1, injecting inert slurries into an excavation cabin through a ball valve of a back plate of the shield tunneling machine so as to retain pressure of soil ahead of the cutter; step 2, digging multiple rows of steel pipe holes at a distance before the cutter, increasing the lengths of the steel pipe holes under the bottom of the shield tunneling machine, sleeving steel pipes into the steel pipe holes, sequentially sleeving PVC pipes and glass fiber ribs into the steel pipes, pouring C20 concrete into the steel pipes and pulling out the steel pipes till the concrete is condensed; step 3, operating the shield tunneling machine to rotate leftwards and rightwards, repeating the step 2 if the cutter fails to rotate till the cutter can normally rotate; and requiring rotation of the cutter once at regular intervals for restoring to normal tunneling such that the cutter cuts the stratum. The method for setting the shield tunneling machine free in the water-rich sand cobble stratum due to the stuck cutter has following beneficial effects: by overcoming defects in the prior art, the shield can be rapidly set free during tunneling in the water-rich sand cobble stratum; and features such as programmed operation, highly targeted technologies, rational parameters, high efficiency and quickness, safety and reliability are obtained.
Description
Technical field
The present invention relates to shield tunnel Construction Technology field, more particularly to a kind of earth pressure balance shield machine cutterhead card
The dead construction method quickly got rid of poverty.
Background technology
Existing earth pressure balanced shield, EPBS in cobble stratum progradation, because existing ground layer soil body independence is poor, ovum
Stone content increases, fine sand content is reduced, hydraulic pressure is very big, stratum perturbs severity, is easy to cutterhead occur in the case of this kind stuck
Phenomenon.
Process the problems referred to above common practice and have ultimate torque to get rid of poverty, local thaws and gets rid of poverty, breaks plain concrete and open a position cleaning
Dregs is got rid of poverty.In practice of construction, ultimate torque success rate of getting rid of poverty is low and there is the risk of damage equipment；Local thaws and gets rid of poverty
Time-consuming and has local thaw collapse phenomenon；The concrete pile driving cleaning dregs that opens a position is got rid of poverty and can only carry out local off-loading, off-loading effect
Fruit is closely related with cutterhead aperture opening ratio, shield machine diameter, and it is time-consuming more and success rate of getting rid of poverty is low, and ground disturbance severity is led
Churning driven is caused to be difficult to pore-forming.
The content of the invention
Present invention aim to address shield machine get rid of poverty in rich water sand-pebble layer progradation existing for way into
Power is low, time-consuming, the technical problem that equipment damage risk is big, and the present invention as references object, carries 6.5m diameter shield machines
A kind of stuck method of getting rid of poverty of cutter head of shield machine in rich water sand-pebble layer is supplied, has been comprised the steps：
Step one, by the ball valve on shield machine backboard to excavate storehouse in inject inert slurry, to cutterhead front the soil body enter
Row pressurize is processed；
Step 2, in front of the cutterhead at a certain distance from squeeze into steel pipe hole, and steel pipe hole depth is deep under shield motor spindle
Side, is then arranged steel pipe in steel pipe hole, is arranged pvc pipe and glass fiber-reinforced polymer successively in steel pipe, and C20 is injected in steel pipe
Concrete, extracts steel pipe after concrete setting；
Step 3, operation cutter head of shield machine left rotation and right rotation, it is heavy in certain distance in front of cutterhead if cutterhead cannot rotate
Multiple step 2, until cutterhead can rotate；To prevent cutterhead stuck again, need at regular intervals before formal driving is recovered
Rotate a cutterhead, it is ensured that cutterhead normally cuts.
Preferably, in step one, it is additionally included in ground and carries out ground using disintegrating machine and abolish and surface management.
Preferably, also include between step one and step 2：
Dewatering well is set by shield machine, and makes precipitation well depth be deeper than shield motor spindle, so that water level is dropped to shield machine
Below.
Preferably, all around locate to set a dewatering well respectively in shield machine, the depth of the dewatering well is less than shield
Below structure motor spindle 2m.
Preferably, in step 2, described at the 150mm of steel pipe hole cutterhead front, the aperture in the steel pipe hole is
150mm, the spacing in two neighboring steel pipe hole is 300mm, and the depth in steel pipe hole is deep to below shield machine bottom part down 2m.
Preferably, in step 3, every half an hour turn a cutterhead 120, with the speed of 1-1.2rpm, 3000～
The moment of torsion rotating cutter-head of 3500KNm, under the thrust rating of 12000～16000KN stratum is cut, for the shield of other specifications
Machine aforesaid operations parameter is adjusted correspondingly.
When cutterhead driving front cobble consistency is higher, there is provided cutter head of shield machine card in another kind of rich water sand-pebble layer
Extremely get rid of poverty method, comprise the steps：
Step one, the ball valve opened on shield machine backboard inject inert slurry into excavation storehouse, and the cutterhead front soil body is entered
Row pressurize is processed；
Step 2, certain distance squeezes into steel pipe hole in front of cutterhead, and the depth in steel pipe hole is deep under shield motor spindle
Side, steel pipe is arranged steel pipe in hole；
Step 3, operation cutter head of shield machine left rotation and right rotation, it is heavy in certain distance in front of cutterhead if cutterhead cannot rotate
Multiple step 2, until cutterhead can normally rotate；Then the steel pipe under extracting, and a cutterhead is rotated at regular intervals, protect
Card cutterhead normally cuts.
Preferably, in step one, it is additionally included in ground and carries out ground using disintegrating machine and abolish and surface management.
Preferably, also include between step one and step 2：
All around locate to set a dewatering well respectively in shield machine, the depth of the dewatering well is less than shield motor spindle
2m。
Preferably, in step 3, every half an hour turn a cutterhead 120, with the speed of 1-1.2rpm, 3000～
The moment of torsion rotating cutter-head of 3500KNm, under the thrust rating of 12000～16000KN stratum is cut, for the shield of other specifications
Machine aforesaid operations parameter is adjusted correspondingly.
Beneficial effects of the present invention embody in the following areas：The method that the present invention is provided overcomes the deficiencies in the prior art,
Can quickly get rid of poverty in rich water sand-pebble layer during shield driving, be programmed with operation, technique is with strong points, parameter
Rationally, efficient quick, it is safe and reliable the characteristics of.
Description of the drawings
Fig. 1 is the stuck method flow diagram of getting rid of poverty of cutter head of shield machine in rich water sand-pebble layer of the present invention.
The stuck method flow diagram of getting rid of poverty of cutter head of shield machine in rich water sand-pebble layer in another embodiments of Fig. 2.
Fig. 3 is that shield machine of the present invention excavates storehouse injected hole position view.
Fig. 4 is dewatering well of the present invention longitudinal direction schematic diagram.
Fig. 5 is the horizontal schematic diagram of dewatering well of the present invention.
Fig. 6 adds pvc pipe and glass fiber-reinforced polymer longitudinal direction schematic diagram for steel-pipe pile of the present invention.
Fig. 7 adds pvc pipe and the horizontal schematic diagram of glass fiber-reinforced polymer for steel-pipe pile of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail, to make those skilled in the art with reference to description text
Word can be implemented according to this.
The present invention is in order to solve the success rate that shield machine is got rid of poverty existing for way in rich water sand-pebble layer progradation
It is low, time-consuming, the technical problem that equipment damage risk is big, there is provided a kind of shield machine is quickly got rid of poverty in rich water sand-pebble layer
Construction method, water level is dropped to below shield machine using dewatering well is set, row's steel is broken in front of cutterhead using jumbolter
Pile tube makes the soil body loosely stable, and own structural characteristics using steel-pipe pile and toward excavating injection inert slurry pressurize in storehouse,
Turn over cutterhead or add using steel-pipe pile pore-forming and in steel pipe pvc pipe add wherein again glass fiber-reinforced polymer and
The concrete for pouring C20 is stabilized it, it is to avoid caved in again, turns over cutterhead.As shown in figure 1, comprising the following steps that：
Step one S210, excavation storehouse pressurize and ground are removed
As shown in figure 3, being provided with ball valve 111 on the backboard of shield machine 110, opened by the way that ball valve 111 is past using grouting pump
Dig in storehouse and squeeze into the inert slurry of high concentration, pressurize process is carried out to the cutterhead front soil body；Meanwhile, entered using disintegrating machine on ground
Abolish and surface management on row ground.
Step 2 S220, excavation and precipitation well
As shown in Figure 4, Figure 5, according to measurement mileage and buried depth situation, with the rotary drilling rig of 800mm before and after shield machine 110
Left and right sets altogether 4 dewatering wells 130, and the well head bore of the dewatering well 130 is 300-325mm, and the depth of dewatering well 130 should be low
The position of more than the bottom part down 2m of shield machine 110 is located in more than shield motor spindle 2m, i.e. shaft bottom.By setting dewatering well 130
Water level is dropped to below the cutterhead bottom of shield machine 110.
Step 3 S230, laying steel-pipe pile
As shown in Figure 6, Figure 7, according to measurement mileage and buried depth situation, using KR909-1 jumbolters before cutterhead 120
The steel pipe hole of a row Φ 150mm is set at 150mm, the distance between each steel pipe hole is 300mm, and steel pipe hole depth is to shield motor spindle 2
Rice.Steel pipe 141 is arranged respectively in steel pipe hole using jumbolter, pvc pipe 142 is arranged in steel pipe 141, in pvc pipe 142
It is arranged glass fiber-reinforced polymer 143.As a kind of preferred, in mounted pvc pipe 142 3 glass fiber-reinforced polymers 143 are arranged with.
Complete to set after steel-pipe pile, the concrete of injection C20, extracts steel pipe 141 after concrete setting in steel pipe 141.
Jumbolter should be noted when drilling：Hook steel wire rope should be hung tight during perforate, slow-speed is gently pressed, to ensure that what is drilled hangs down
Straight degree.Drilling construction using natural pulping in hole, in drilling process mud density control 1.10～1.15, when lifted drilling tool or
During shut-down, full mud must be pressed in hole, to prevent hole wall collapse.Drilling depth is reached after designed elevation, by drilling rod before brill is carried
Carry to debris in cleaning hole from bottom hole 0.50m, are punched out, while the mud density in hole is progressively adjusted to into 1.10, bottom hole is sunk
Silt thickness should be less than 30cm, without till clod in the mud for returning out.
Should be noted in the installation course of steel pipe 141：It is to reduce steel pipe water level in borehole to need to be applied using well casing before decentralization steel pipe
Work technique, when laying well casing needs that well casing filter pipe is measured by root, recorded, while to ensure that well casing sealed bottom needs envelope
Stifled precipitation bottom of the tube.Start to dispose steel pipe 141 after the completion of well casing construction, it is placed in the middle to ensure filter pipe during down tube, on filter pipe
Lower two ends respectively set centralizer (alignment device) of a set of diameter less than aperture 5cm, and upper and lower position centralizer iron hoop answers 1/2nd
Mode is staggeredly arranged.
Should be noted in pumping C20 Concretes：Before the concrete of injection C20 in the well casing under enter drilling rod to from bottom hole
0.30m～0.50m, well casing is suitable for reading should to be added after silently sealing, and pumping mud carries out progressively being sized mixing in punching from drilling rod makes hole
Interior mud returns slurry from filter pipe annular gap from inside to outside by well casing and hole wall, the mud density in hole is progressively transferred to
1.05, then open little pump amount and insert filtrate by the tectonic sieving requirement of aforementioned well, and with filling out with surveying the height of filling out filtrate.Until filter
Till entering precalculated position under material, when filling out filtrate, regimen condition adjustment pump amount is returned according to aperture.
Step 4 S240, recovery driving
Left rotation and right rotation cutterhead 120, if cutterhead 120 is rotated successfully follow-up work is entered, and is otherwise reselected according to scene
Operation of the construction in repeat step three, until cutterhead 120 is rotated successfully.Turn a cutterhead 120 every half an hour, with 1-
The rotating speed of 1.2rpm, the moment of torsion rotating cutter-head 120 of 3000～3500KNm, cut under the thrust rating of 12000～16000KN
Cobble, concrete operations parameter can be according to type specification institution.
For sandy gravel tight formation, in another embodiment of the invention, its step is as follows：
Step one S310, excavation storehouse pressurize and ground are removed
Ball valve 111 is provided with the backboard of shield machine 110, is squeezed into toward in excavation storehouse by ball valve 111 using grouting pump
The inert slurry of high concentration, to the cutterhead front soil body pressurize process is carried out；Meanwhile, carry out ground using disintegrating machine on ground and abolish
And surface management.
Step 2 S320, excavation and precipitation well
According to measurement mileage and buried depth situation, 4 are all around set altogether in shield machine 110 with the rotary drilling rig of 800mm
Dewatering well 130, the aperture of the dewatering well 130 is 300-325mm, and the depth of the dewatering well 130 should be less than shield motor spindle
More than 2m, i.e. shaft bottom are located at the bottom part down 2m above position of shield machine 110.Water level is dropped to shield by setting dewatering well 130
Below machine 110.
Step 3 S330, laying steel-pipe pile
According to measurement mileage and buried depth situation, using KR909-1 jumbolters before cutterhead 150mm to make a call to a row a diameter of
The steel pipe hole of 150mm, pitch of holes is 300mm, and steel pipe is arranged afterwards.
It is pressurized in step 4 S340, storehouse
Inert slurry is uniformly beaten toward storehouse upper semi-circle is excavated by grouting pump, pressure is gradually increased, concrete pressure set points
For 0.9-1.1 times of stratum Water And Earth Pressures of constructing.
Step 5 S350, rotary head
Operation cutter head of shield machine left rotation and right rotation, into follow-up work if cutterhead is rotated successfully, otherwise repeat step three, directly
Rotate successfully to cutterhead.
Step 6 S360, recovery driving
Steel pipe under being extracted using KR909-1 jumbolters, with the speed of 1-1.2rpm every half an hour rotor disk once
Degree, the moment of torsion rotating cutter-head of 3000～3500KNm, cut cobble, concrete operations under the thrust rating of 12000～16000KN
Parameter can be according to type specification institution.
Although embodiment of the present invention is disclosed as above, it is not restricted to listed in description and embodiment
With.It can be applied to completely various suitable the field of the invention.For those skilled in the art, can be easily
Realize other modification.Therefore under the general concept limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the legend with description.
Claims (10)
1. a kind of stuck method of getting rid of poverty of cutter head of shield machine in rich water sand-pebble layer, it is characterised in that comprise the steps：
Step one, by the ball valve on shield machine backboard to excavate storehouse in inject inert slurry, with to cutterhead front the soil body carry out
Pressurize is processed；
Step 2, some row's steel pipe holes are beaten in front of cutterhead, and make the depth in steel pipe hole to shield machine bottom part down, in steel pipe hole
Steel pipe is arranged, pvc pipe and glass fiber-reinforced polymer is arranged successively in steel pipe, and C20 concrete is injected in steel pipe, treat that concrete coagulates
Gu after extract steel pipe；
Step 3, operation cutter head of shield machine left rotation and right rotation, the repeat step two if cutterhead cannot rotate, until cutterhead can revolve
Turn；Then a cutterhead is rotated at regular intervals, makes knife cutting stratum.
2. the stuck method of getting rid of poverty of cutter head of shield machine in rich water sand-pebble layer according to claim 1, it is characterised in that step
In rapid one, it is additionally included in ground and carries out ground using disintegrating machine and abolish and surface management.
3. the stuck method of getting rid of poverty of cutter head of shield machine in rich water sand-pebble layer according to claim 1, it is characterised in that step
Also include between rapid one and step 2：
Dewatering well is set by shield machine, and makes precipitation well depth be deeper than shield motor spindle, so that water level is dropped to below shield machine.
4. the stuck method of getting rid of poverty of cutter head of shield machine in rich water sand-pebble layer according to claim 3, it is characterised in that
Shield machine is all around located to set a dewatering well respectively, and the depth of the dewatering well is less than shield motor spindle 2m.
5. the stuck method of getting rid of poverty of cutter head of shield machine in rich water sand-pebble layer according to claim 4, it is characterised in that step
In rapid two, described at the 150mm of steel pipe hole cutterhead front, the aperture in the steel pipe hole is 150mm, two neighboring steel pipe hole
Spacing is 300mm, and the depth in steel pipe hole is to 2 meters of shield machine bottom part down.
6. the stuck method of getting rid of poverty of cutter head of shield machine in rich water sand-pebble layer according to claim 1, it is characterised in that step
In rapid three, turn a cutterhead 120 every half an hour, with the speed of 1-1.2rpm, the moment of torsion rotating knife of 3000～3500KNm
Disk, under the thrust rating of 12000～16000KN stratum is cut.
7. a kind of stuck method of getting rid of poverty of cutter head of shield machine in rich water sand-pebble layer, it is characterised in that comprise the steps：
Step one, by the ball valve on shield machine backboard to excavate storehouse in inject inert slurry, with to cutterhead front the soil body carry out
Pressurize is processed；
Step 2, some row's steel pipe holes are beaten in front of cutterhead, and make the depth in steel pipe hole to shield machine bottom part down, in steel pipe hole
It is arranged steel pipe；
Step 3, inert slurry is uniformly beaten toward storehouse upper semi-circle is excavated by grouting pump, and increase pressure step by step to stratum water of constructing
Soil pressure.
Step 4, operation cutter head of shield machine left rotation and right rotation, the repeat step two if cutterhead cannot rotate, until cutterhead can revolve
Turn；Then the steel pipe under extracting, and a cutterhead is rotated at regular intervals, make knife cutting stratum.
8. the stuck method of getting rid of poverty of cutter head of shield machine in rich water sand-pebble layer according to claim 7, it is characterised in that step
In rapid one, it is additionally included in ground and carries out ground using disintegrating machine and abolish and surface management.
9. the stuck method of getting rid of poverty of cutter head of shield machine in rich water sand-pebble layer according to claim 7, it is characterised in that step
Also include between rapid one and step 2：
All around locate to set a dewatering well respectively in shield machine, the depth of the dewatering well is less than shield motor spindle 2m.
10. the stuck method of getting rid of poverty of cutter head of shield machine in rich water sand-pebble layer according to claim 9, it is characterised in that
In step 3, turn a cutterhead 120 every half an hour, with the speed of 1-1.2rpm, the moment of torsion rotating knife of 3000～3500KNm
Disk, under the thrust rating of 12000～16000KN stratum is cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611121888.XA CN106593456A (en) | 2016-12-08 | 2016-12-08 | Method for setting shield tunneling machine free in water-rich sand cobble stratum due to stuck cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611121888.XA CN106593456A (en) | 2016-12-08 | 2016-12-08 | Method for setting shield tunneling machine free in water-rich sand cobble stratum due to stuck cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106593456A true CN106593456A (en) | 2017-04-26 |
Family
ID=58597403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611121888.XA Withdrawn CN106593456A (en) | 2016-12-08 | 2016-12-08 | Method for setting shield tunneling machine free in water-rich sand cobble stratum due to stuck cutter |
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| Country | Link |
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| CN (1) | CN106593456A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152286A (en) * | 2017-06-28 | 2017-09-12 | 中船重型装备有限公司 | A kind of cutterhead frequency-conversion control cabinet electricity for shield machine drives moment of torsion and got rid of poverty system and method |
| CN108798688A (en) * | 2018-06-01 | 2018-11-13 | 中国科学院武汉岩土力学研究所 | Realize that the combination type T BM that gets rid of poverty of card machine and card machine get rid of poverty driving method |
| CN109322671A (en) * | 2018-10-24 | 2019-02-12 | 重庆大学 | A method of getting out of the trapped shield tool wear |
| CN109707391A (en) * | 2019-02-26 | 2019-05-03 | 中国铁建重工集团有限公司 | The escaping apparatus and development machine of development machine |
| CN115075832A (en) * | 2022-07-08 | 2022-09-20 | 中建海峡建设发展有限公司 | Shield tunneling machine escaping construction method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152286A (en) * | 2017-06-28 | 2017-09-12 | 中船重型装备有限公司 | A kind of cutterhead frequency-conversion control cabinet electricity for shield machine drives moment of torsion and got rid of poverty system and method |
| CN108798688A (en) * | 2018-06-01 | 2018-11-13 | 中国科学院武汉岩土力学研究所 | Realize that the combination type T BM that gets rid of poverty of card machine and card machine get rid of poverty driving method |
| CN109322671A (en) * | 2018-10-24 | 2019-02-12 | 重庆大学 | A method of getting out of the trapped shield tool wear |
| CN109322671B (en) * | 2018-10-24 | 2020-05-19 | 重庆大学 | A method of getting out of the trapped shield tool wear |
| CN109707391A (en) * | 2019-02-26 | 2019-05-03 | 中国铁建重工集团有限公司 | The escaping apparatus and development machine of development machine |
| CN109707391B (en) * | 2019-02-26 | 2024-03-08 | 中国铁建重工集团股份有限公司 | Escaping device of heading machine and heading machine |
| CN115075832A (en) * | 2022-07-08 | 2022-09-20 | 中建海峡建设发展有限公司 | Shield tunneling machine escaping construction method |
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| PB01 | Publication | ||
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Application publication date: 20170426 |