CN104018844B - Shield machine hydraulic pressure air pressure balance control system in water rich strata and control method thereof - Google Patents
Shield machine hydraulic pressure air pressure balance control system in water rich strata and control method thereof Download PDFInfo
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- CN104018844B CN104018844B CN201410227110.1A CN201410227110A CN104018844B CN 104018844 B CN104018844 B CN 104018844B CN 201410227110 A CN201410227110 A CN 201410227110A CN 104018844 B CN104018844 B CN 104018844B
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Abstract
The invention discloses the shield machine hydraulic pressure air pressure balance control system in a kind of water rich strata and control method thereof, solve shield machine dregs in water rich strata and normally can not discharge the problem affecting shield machine and normally tunnel.Be included on screw machine soil outlet (3) and be provided with soil pressure of soil pressure sensor (8), the native cabin inwall of the At The Height of 1/3rd capacity of shield machine soil cabin (2) is provided with native cabin dregs upper limit sensor (9), the native cabin inwall at 1 meter of, top of native cabin dregs upper limit sensor (9) is provided with native cabin ponding pressure sensing (10), the inwall at top, native cabin is provided with baroceptor (11), Industrial Personal Computer (IPC) (12) is provided with in the control room of shield machine, the compressed air delivery outlet of air compressor (13) is communicated with shield machine soil cabin (2) by compressed air inlet pipe (14).Invention increases the efficiency of construction of the shield machine in water rich strata, ensure that the quality of shield-tunneling construction.
Description
Technical field
The present invention relates to a kind of control system of shield machine, particularly a kind of native cabin control pressurer system of the shield machine tunneled in water rich strata and control method thereof.
Background technology
The excavation of subway tunnel has two kinds of modes, is respectively Mining Method and shield method.When geological conditions more complicated, when above ground structure is again than comparatively dense, be generally adopt shield construction tunnel.Shield method (ShieldMethod) is a kind of Fully-mechanized construction method in shallow mining method, and it is advanced in ground by shield machine, is supported the country rock of surrounding, prevent country rock from caving in tunnel by shield structure shell and section of jurisdiction.Meanwhile, in excavation face front, carry out soil excavation with topping machanism, by unearthed machinery, the dregs excavated out is transported outside hole, by jack in rear pressurization jacking, and assembled precast concrete section of jurisdiction, form a kind of mechanized construction method of tunnel structure.The native freight space of shield machine, in cutter head of shield machine rear, is that carrying collects the seal cavity that face peels off rock mass and dregs.In the normal progradation of shield machine, the dregs that face peels off enters into screw machine by the screw machine mouth that buries, and by belt conveyor, is discharged in the slag case of battery truck of slagging tap.In shield machine soil cabin, be generally provided with pressure sensor, for monitoring the pressure of dregs in cabin, and by signal transmission to shield machine control room, for operating personnel provide reference, operating personnel regulate the fltting speed the quantity of slag and shield machine of shield machine according to pressure.In rich water compound stratum, underground water has larger head pressure, underground water can enter into the native cabin of shield machine by rock fracture, cause the problem that in the native cabin of shield machine, hydraulic pressure is excessive, and then cause slagging tap and gush, make dregs be slipped in tunnel from conveyor, badly influence the normal tunneling construction of shield machine.
Summary of the invention
The invention provides the shield machine hydraulic pressure air pressure balance control system in a kind of water rich strata and control method thereof, solve shield machine dregs in water rich strata and normally can not discharge the technical problem affecting shield machine and normally tunnel.
The present invention solves above technical problem by the following technical programs:
Shield machine hydraulic pressure air pressure balance control system in a kind of water rich strata, comprise cutter head of shield machine 1, the rear side of cutter head of shield machine 1 is provided with shield machine soil cabin 2, the lower end in shield machine soil cabin 2 is provided with screw machine soil outlet 3, screw machine soil outlet 3 is connected with screw machine 4, screw machine soil outlet 3 is provided with soil pressure of soil pressure sensor 8, the native cabin inwall of the At The Height of 1/3rd capacity in shield machine soil cabin 2 is provided with native cabin dregs upper limit sensor 9, above native cabin dregs upper limit sensor 91 meter of native cabin inwall on be provided with native cabin ponding pressure sensing 10, the inwall at top, native cabin is provided with baroceptor 11, Industrial Personal Computer (IPC) 12 is provided with in the control room of shield machine, soil pressure of soil pressure sensor 8, soil cabin dregs upper limit sensor 9, soil cabin ponding pressure sensing 10 and baroceptor 11 are electrically connected with Industrial Personal Computer (IPC) 12 respectively, the control output end of Industrial Personal Computer (IPC) 12 is electrically connected by control circuit 15 and air compressor 13, the compressed air delivery outlet of air compressor 13 is connected together by compressed air inlet pipe 14 and shield machine soil cabin 2, native cabin dregs 5 is disposed with from top to bottom in native cabin, pneumatosis 7 in soil cabin internal water accumulation 6 and native cabin.
Shield machine hydraulic pressure air pressure balance control method in a kind of water rich strata, it is characterized in that: Industrial Personal Computer (IPC) 12 is pressure signals that soil pressure of soil pressure sensor 8 transmission arranged by screw machine soil outlet 3 place is come, judge what whether screw machine soil outlet 3 place in native cabin was closed by dregs, if screw machine soil outlet 3 is closed by dregs, what then keep screw machine 4 goes out the quantity of slag, if screw machine soil outlet 3 is not closed, that reduces screw machine 4 by shield machine control room goes out the quantity of slag; Industrial Personal Computer (IPC) 12 is the pressure signals come by the transmission of native cabin dregs upper limit sensor 9, judge dregs position in native cabin whether higher than shield machine soil cabin 2 total capacity 1/3rd, if not higher than shield machine soil cabin 2 total capacity 1/3rd, what then keep screw machine 4 goes out the quantity of slag, if 1/3rd of the total capacity higher than shield machine soil cabin 2, what increase screw machine 4 by shield machine control room goes out the quantity of slag; Industrial Personal Computer (IPC) 12 the ponding pressure sensing 10 in shield machine soil cabin 2 is transmitted the pressure signal that the pressure signal and the baroceptor 11 that come transmit to compare, if when the pneumatosis pressure in the ponding pressure in shield machine soil cabin 2 and shield machine soil cabin 2 is unequal, Industrial Personal Computer (IPC) 12 is by regulating the air demand of air compressor 13, make the ponding pressure in shield machine soil cabin 2 equal with the pneumatosis pressure in shield machine soil cabin 2, thus the hydraulic pressure reached in shield machine soil cabin 2 and air pressure balance.
The invention solves a difficult problem for water rich strata shield-tunneling construction, by make shield machine soil cabin in hydraulic pressure and air pressure balance, effectively ensure that the dregs of shield machine is discharged smoothly, improve the efficiency of construction of the shield machine in water rich strata, ensure that the quality of shield-tunneling construction.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Shield machine hydraulic pressure air pressure balance control system in a kind of water rich strata, comprise cutter head of shield machine 1, the rear side of cutter head of shield machine 1 is provided with shield machine soil cabin 2, the lower end in shield machine soil cabin 2 is provided with screw machine soil outlet 3, screw machine soil outlet 3 is connected with screw machine 4, screw machine soil outlet 3 is provided with soil pressure of soil pressure sensor 8, the native cabin inwall of the At The Height of 1/3rd capacity in shield machine soil cabin 2 is provided with native cabin dregs upper limit sensor 9, above native cabin dregs upper limit sensor 91 meter of native cabin inwall on be provided with native cabin ponding pressure sensing 10, the inwall at top, native cabin is provided with baroceptor 11, Industrial Personal Computer (IPC) 12 is provided with in the control room of shield machine, soil pressure of soil pressure sensor 8, soil cabin dregs upper limit sensor 9, soil cabin ponding pressure sensing 10 and baroceptor 11 are electrically connected with Industrial Personal Computer (IPC) 12 respectively, the control output end of Industrial Personal Computer (IPC) 12 is electrically connected by control circuit 15 and air compressor 13, the compressed air delivery outlet of air compressor 13 is connected together by compressed air inlet pipe 14 and shield machine soil cabin 2, native cabin dregs 5 is disposed with from top to bottom in native cabin, pneumatosis 7 in soil cabin internal water accumulation 6 and native cabin.
Shield machine hydraulic pressure air pressure balance control method in a kind of water rich strata, it is characterized in that: Industrial Personal Computer (IPC) 12 is pressure signals that soil pressure of soil pressure sensor 8 transmission arranged by screw machine soil outlet 3 place is come, judge what whether screw machine soil outlet 3 place in native cabin was closed by dregs, if screw machine soil outlet 3 is closed by dregs, what then keep screw machine 4 goes out the quantity of slag, if screw machine soil outlet 3 is not closed, that reduces screw machine 4 by shield machine control room goes out the quantity of slag; Industrial Personal Computer (IPC) 12 is the pressure signals come by the transmission of native cabin dregs upper limit sensor 9, judge dregs position in native cabin whether higher than shield machine soil cabin 2 total capacity 1/3rd, if not higher than shield machine soil cabin 2 total capacity 1/3rd, what then keep screw machine 4 goes out the quantity of slag, if 1/3rd of the total capacity higher than shield machine soil cabin 2, what increase screw machine 4 by shield machine control room goes out the quantity of slag; Industrial Personal Computer (IPC) 12 the ponding pressure sensing 10 in shield machine soil cabin 2 is transmitted the pressure signal that the pressure signal and the baroceptor 11 that come transmit to compare, if when the pneumatosis pressure in the ponding pressure in shield machine soil cabin 2 and shield machine soil cabin 2 is unequal, Industrial Personal Computer (IPC) 12 is by regulating the air demand of air compressor 13, make the ponding pressure in shield machine soil cabin 2 equal with the pneumatosis pressure in shield machine soil cabin 2, thus the hydraulic pressure reached in shield machine soil cabin 2 and air pressure balance.
Specific embodiment of the invention is divided into following step: in the progradation of shield machine, the pressure signal of Industrial Personal Computer (IPC) 12 is fed back to by soil pressure of soil pressure sensor 8, judge that dregs in shield machine soil cabin 2 whether can enclosing coil machine soil outlet 3 completely, thus ensure that shield machine soil cabin 2 is fully closed, to set up air pressure.Be sensor 9 by the native cabin dregs upper limit, ensure that dregs position is no more than 1/3rd of the volume in shield machine soil cabin 2, if the dregs position in shield machine soil cabin 2 is greater than 1/3rd, will affect shield driving speed, then raising screw machine 4 go out the quantity of slag.The pressure signal of Industrial Personal Computer (IPC) 12 is passed to control the charge flow rate of air compressor 13 finally by native cabin ponding pressure sensing 10 and baroceptor 11, if the pressure information being passed to Industrial Personal Computer (IPC) 12 by native cabin ponding pressure sensing 10 and baroceptor 11 is not identical, then Industrial Personal Computer (IPC) 12 is to air compressor 13 transmission of signal, improves air compressor 13 air demand.The present invention mainly controls the gas-water pressure balance in shield machine soil cabin 2, and ensures that the ponding depth of water in shield machine soil cabin 2 is no more than 1 meter, thus makes dregs workability meet continuous excavation condition, and shield-tunneling construction can normally be advanced continuously.
Claims (1)
1. the shield machine hydraulic pressure air pressure balance control method in a water rich strata, it is characterized in that: Industrial Personal Computer (IPC) (12) is the pressure signal that soil pressure of soil pressure sensor (8) transmission arranged by screw machine soil outlet (3) place is come, judge what whether screw machine soil outlet (3) place in native cabin was closed by dregs, if screw machine soil outlet (3) is closed by dregs, what then keep screw machine (4) goes out the quantity of slag, if screw machine soil outlet (3) is not closed, that reduces screw machine (4) by shield machine control room goes out the quantity of slag; Industrial Personal Computer (IPC) (12) transmits by native cabin dregs upper limit sensor (9) the pressure signal of coming, judge dregs position in native cabin whether higher than shield machine soil cabin (2) total capacity 1/3rd, if not higher than shield machine soil cabin (2) total capacity 1/3rd, what then keep screw machine (4) goes out the quantity of slag, if 1/3rd of the total capacity higher than shield machine soil cabin (2), what increase screw machine (4) by shield machine control room goes out the quantity of slag; Industrial Personal Computer (IPC) (12) pressure signal next for the transmission of the ponding pressure sensing (10) of shield machine soil cabin (2) and baroceptor (11) is transmitted the pressure signal come compare, if when the pneumatosis pressure of the ponding pressure of shield machine soil cabin (2) and shield machine soil cabin (2) is unequal, Industrial Personal Computer (IPC) (12) is by regulating the air demand of air compressor (13), make the ponding pressure of shield machine soil cabin (2) equal with the pneumatosis pressure of shield machine soil cabin (2), thus the hydraulic pressure reached in shield machine soil cabin (2) and air pressure balance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410227110.1A CN104018844B (en) | 2014-05-27 | 2014-05-27 | Shield machine hydraulic pressure air pressure balance control system in water rich strata and control method thereof |
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| CN201410227110.1A CN104018844B (en) | 2014-05-27 | 2014-05-27 | Shield machine hydraulic pressure air pressure balance control system in water rich strata and control method thereof |
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| CN104018844B true CN104018844B (en) | 2016-03-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104653191B (en) * | 2014-12-31 | 2017-06-13 | 广东华隧建设股份有限公司 | A kind of method of earth pressure shield tunneling machine high efficient driving in rich water round gravel stratum |
| CN104806262A (en) * | 2015-05-15 | 2015-07-29 | 中铁二局股份有限公司 | Six-cutter head rectangular tube pushing machine |
| CN107420109A (en) * | 2017-08-11 | 2017-12-01 | 中国铁建重工集团有限公司 | A kind of automatic pressure-maintaining system and shield machine for slurry balance shield machine |
| CN111894615A (en) * | 2020-08-10 | 2020-11-06 | 中国电建集团铁路建设有限公司 | Air pressure balance shield machine and construction method |
| CN113202486A (en) * | 2021-04-29 | 2021-08-03 | 中铁十二局集团有限公司 | Auxiliary pressure maintaining propulsion method for water-rich rock stratum SAMSON system |
| CN113202488A (en) * | 2021-05-14 | 2021-08-03 | 盾构及掘进技术国家重点实验室 | Device and method for improving supporting effect of excavation face of earth pressure balance type tunnel boring machine |
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| JP3117380B2 (en) * | 1995-02-13 | 2000-12-11 | 三菱重工業株式会社 | Muddy tunnel excavator |
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| CN201354640Y (en) * | 2008-12-09 | 2009-12-02 | 中铁隧道集团隧道设备制造有限公司 | Automatic control system for balancing shield machine excavation chamber pressure |
| CN101705827A (en) * | 2009-10-21 | 2010-05-12 | 上海隧道工程股份有限公司 | Muddy water and air balance shield pressure control method and device |
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