CN207080232U - EPB shield tunneling bentonite pressurize equipment - Google Patents
EPB shield tunneling bentonite pressurize equipment Download PDFInfo
- Publication number
- CN207080232U CN207080232U CN201721000160.1U CN201721000160U CN207080232U CN 207080232 U CN207080232 U CN 207080232U CN 201721000160 U CN201721000160 U CN 201721000160U CN 207080232 U CN207080232 U CN 207080232U
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- bentonite
- pressure chamber
- pressure
- case
- pressurize equipment
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- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The utility model discloses a kind of EPB shield tunneling bentonite pressurize equipment, it includes bentonite case, the mixer being installed in the bentonite case, and the pressurize equipment also includes bentonite Pressure chamber, the bentonite pump being connected between the bentonite case phase and the bentonite Pressure chamber, gas supply part and control unit for being supplied into bentonite Pressure chamber.The utility model sets up bentonite Pressure chamber between bentonite case and native storehouse, and the pressure and level condition in Tu Cang, bentonite Pressure chamber and bentonite case are monitored by pressure sensor and liquid level sensor moment, using the pressure in the real-time adjustment Tu Cang of gas supply part, bentonite Pressure chamber and bentonite case, the occurrence of gushing can be completely eliminated substantially.
Description
Technical field
Suporting structure field is the utility model is related to, more particularly to a kind of EPB shield tunneling bentonite pressurize equipment.
Background technology
Shield is the main method in constructing metro tunnel, and under Complicated Geologic Condition, can shield machine quickly smoothly pacify
Full driving, it is heavily dependent on the use to additive.Conventional additive has foaming agent, bentonite and polymer,
And foaming agent and bentonite are then the progress most important additives of sediment improvement in current Shield Construction Method Used.Bentonite is not easy to coagulate
Gu intensity is extremely low after solidification, its hygroscopic expansion simultaneously has lubricity, can effectively reduce the permeability of dregs.In easy unstability
Stratum in when overhauling shield machine for a long time, inject bentonite to Tu Cang, support pressure can be kept, prevent the water and soil in stratum from entering
Bury storehouse and cause surface subsidence；In addition the workability of dregs can be changed, the plasticity of sand soil is improved, be easy to be unearthed, reduce spray
Gush.
Existing bentonite pipe-line system includes bentonite case, and bentonite case is connected with bentonite ascending pipe, bentonite note
Enter pipe and be provided with bentonite control valve, bentonite pump, pressure gauge, bentonite flowmeter and non-return valve, bentonite inlet position
In Tu Cang tops.In shield-tunneling construction, to make the dregs that excavation gets off have certain mobility and a sealing, bentonite is from swelling
Bentonite pipeline is pumped into by bentonite pump in native case, so as to be injected into native storehouse, plays the underground water for reducing excavation face to pressure
Power is gushed out in cabin, reduces generation of gushing.The problem of boosting or decompression delay be present in the existing bentonite supply unit pressure balance obtained,
Generation of gushing can be caused to a certain extent, in order to further reduce generation of gushing, it is necessary to the pressure of moment holding bentonite supply unit
Power balances with support pressure, and it is current urgent problem that how the moment, which keeps balance,.
The content of the invention
The purpose of this utility model, which is to provide one kind, can keep Tu Cang and the pressure balanced soil of bentonite supply unit constantly
Press shield bentonite pressurize equipment.
In order to solve the above technical problems, the utility model adopts the following technical scheme that：A kind of EPB shield tunneling bentonite pressurize
Equipment, it includes bentonite case, the mixer being installed in the bentonite case, and the pressurize equipment also includes swelling soil pressure
Storehouse, the bentonite pump being connected between the bentonite case phase and the bentonite Pressure chamber, for into bentonite Pressure chamber
The gas supply part and control unit of supply.
Optimization, the liquid level that the pressurize equipment also includes being installed in the bentonite case and bentonite Pressure chamber passes
Sensor, the pressure sensor being installed in the bentonite Pressure chamber and native storehouse.
Optimization, the gas supply part include source of the gas, be connected to it is pneumatic between the source of the gas and the bentonite Pressure chamber
Ball valve.
Optimization, it is additionally provided with pneumatic ball valve between Tu Cang and the bentonite Pressure chamber.
Further, it is respectively equipped with PID control on the liquid level sensor and pressure sensor in the bentonite Pressure chamber
Device.
Further, the pneumatic ball valve between the Tu Cang and the bentonite Pressure chamber is provided with PID controller.
Further, the pneumatic ball valve being connected between the source of the gas and the bentonite Pressure chamber has two and phase
It is arranged in parallel.
The beneficial effects of the utility model are：The utility model sets up swelling soil pressure between bentonite case and native storehouse
Storehouse, and pass through the pressure in pressure sensor and liquid level sensor moment monitoring Tu Cang, bentonite Pressure chamber and bentonite case
Power and level condition, utilize the pressure in the real-time adjustment Tu Cang of gas supply part, bentonite Pressure chamber and bentonite case, base
The occurrence of gushing is completely eliminated in instinct.
Brief description of the drawings
Accompanying drawing 1 is structural representation of the present utility model.
Embodiment
Shown embodiment is described in detail below to the utility model below in conjunction with the accompanying drawings.
As shown in figure 1, EPB shield tunneling bentonite pressurize equipment includes bentonite case 1, is installed in the bentonite case 1
Mixer 2, the pressurize equipment also include bentonite Pressure chamber 3, are connected to the phase of bentonite case 1 and the swelling soil pressure
Bentonite pump 9 between storehouse 3, the gas supply part for being supplied into bentonite Pressure chamber 3, control unit 10, it is installed on the swelling
Native case 1 and liquid level sensor in bentonite Pressure chamber 3, the pressure being installed in the bentonite Pressure chamber 3 and native storehouse 0
Sensor, the pneumatic ball valve between native storehouse 0 and the bentonite Pressure chamber 3, located at native storehouse 0 and the swelling soil pressure
The PID controller on pneumatic ball valve between storehouse 3, the liquid level sensor being respectively arranged in the bentonite Pressure chamber 3 and pressure
PID controller on sensor.
The liquid level sensor being installed in the bentonite case 1 and bentonite Pressure chamber 3 is respectively the first level sensing
The liquid level sensor 42 of device 41 and second.The pressure sensor being installed in the bentonite Pressure chamber 3 is first pressure sensor
51, the pressure sensor being installed in native storehouse 0 have it is multiple, respectively positioned at the upper strata middle level in native storehouse 0 and lower floor, positioned at upper strata
Pressure sensor is second pressure sensor 52, and the pressure sensor positioned at middle level is the 3rd pressure sensor 53, positioned at lower floor
Pressure sensor be the 4th pressure sensor 54,
The gas supply part includes source of the gas 6, the pneumatic ball valve being connected between the source of the gas 6 and the bentonite Pressure chamber 3,
The pneumatic ball valve being connected between the source of the gas 6 and the bentonite Pressure chamber 3 has two and the setting that is in parallel.Wherein one
The individual pneumatic ball valve for supply, another is the pneumatic ball valve of exhaust, and the two valves are referred to as the first pneumatic ball valve 71
With the second pneumatic ball valve 72, the pneumatic ball valve between native storehouse 0 and the bentonite Pressure chamber 3 is the 3rd pneumatic ball valve 73,
First pneumatic ball valve 71, the second pneumatic ball valve 72 and the 3rd pneumatic ball valve 73 are connected with source of the gas 6 respectively, the first pneumatic ball valve 71
The 5th pressure sensor 55 is additionally provided between source of the gas 6.
The first PID is respectively equipped with first pressure sensor 51, the second liquid level sensor 42 and the 3rd pneumatic ball valve 73
Controller 81, the second PID controller 82 and the 3rd PID controller 83.Second pressure sensor 52, the 3rd pressure sensor 53
And the 4th pressure sensor 54 be connected by adapter 11 with the 3rd PID controllers 83, it is necessary to detect upper strata, middle level or
During lower floor's pressure, the gearshift plectrum of adapter 11 is adjusted to corresponding gear.
The soil that will be detected by second pressure sensor 52, the 3rd pressure sensor 53 and the 4th pressure sensor 54
Pressure in pressure shield soil storehouse 0 is contrasted with setting value, when pressure is less than setting value, automatically opens up the 3rd pneumatic ball valve
73, the bentonite in bentonite Pressure chamber 3 is pressed into native storehouse 0 by air pressure, and simultaneously by the first pneumatic ball valve 71 to
Supplement air, makes pressure remained steady in bentonite Pressure chamber 3, when pressure rises to setting in native storehouse 0 in bentonite Pressure chamber 3
The 3rd pneumatic ball valve 73 is closed during value.Bentonite liquid level in the second liquid level sensor 42 detection storehouse in bentonite Pressure chamber 3, when
When liquid level is less than setting value, automatic start bentonite pump 9 injects bentonite into bentonite Pressure chamber 3, and it is pneumatic to open second
Ball valve 72, the air in bentonite Pressure chamber 3 is discharged, makes its interior pressure constant.
For above-described embodiment only to illustrate technical concepts and features of the present utility model, its object is to allow be familiar with technique
Personage can understand content of the present utility model and implement according to this, the scope of protection of the utility model can not be limited with this.
All equivalent change or modifications made according to the utility model spirit, should all cover within the scope of protection of the utility model.
Claims (7)
1. a kind of EPB shield tunneling bentonite pressurize equipment, it includes bentonite case, the mixer being installed in the bentonite case,
It is characterized in that：The pressurize equipment also includes bentonite Pressure chamber, is connected to the bentonite case phase and the swelling soil pressure
Bentonite pump between power storehouse, gas supply part and control unit for being supplied into bentonite Pressure chamber.
2. EPB shield tunneling bentonite pressurize equipment according to claim 1, it is characterised in that：The pressurize equipment also includes
It is installed on the bentonite case and liquid level sensor in bentonite Pressure chamber, is installed on the bentonite Pressure chamber and soil
Pressure sensor in storehouse.
3. EPB shield tunneling bentonite pressurize equipment according to claim 1, it is characterised in that：The gas supply part includes gas
Source, the pneumatic ball valve being connected between the source of the gas and the bentonite Pressure chamber.
4. EPB shield tunneling bentonite pressurize equipment according to claim 1, it is characterised in that：Tu Cang and the swelling soil pressure
Power is additionally provided with pneumatic ball valve between storehouse.
5. EPB shield tunneling bentonite pressurize equipment according to claim 2, it is characterised in that：In the bentonite Pressure chamber
Liquid level sensor and pressure sensor on be respectively equipped with PID controller.
6. EPB shield tunneling bentonite pressurize equipment according to claim 4, it is characterised in that：The Tu Cang and the swelling
Pneumatic ball valve between soil pressure storehouse is provided with PID controller.
7. EPB shield tunneling bentonite pressurize equipment according to claim 3, it is characterised in that：It is described to be connected to the source of the gas
Pneumatic ball valve between the bentonite Pressure chamber has two and the setting that is in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721000160.1U CN207080232U (en) | 2017-08-11 | 2017-08-11 | EPB shield tunneling bentonite pressurize equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721000160.1U CN207080232U (en) | 2017-08-11 | 2017-08-11 | EPB shield tunneling bentonite pressurize equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207080232U true CN207080232U (en) | 2018-03-09 |
Family
ID=61420058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721000160.1U Active CN207080232U (en) | 2017-08-11 | 2017-08-11 | EPB shield tunneling bentonite pressurize equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207080232U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387105A (en) * | 2017-08-11 | 2017-11-24 | 中交天和机械设备制造有限公司 | EPB shield tunneling bentonite pressurize device and method |
| CN110306996A (en) * | 2019-07-25 | 2019-10-08 | 中交天和机械设备制造有限公司 | The Pneumatic auxiliary device of shield machine earth pressure balance |
-
2017
- 2017-08-11 CN CN201721000160.1U patent/CN207080232U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387105A (en) * | 2017-08-11 | 2017-11-24 | 中交天和机械设备制造有限公司 | EPB shield tunneling bentonite pressurize device and method |
| CN107387105B (en) * | 2017-08-11 | 2023-12-22 | 中交天和机械设备制造有限公司 | Soil pressure shield bentonite pressure maintaining equipment and method |
| CN110306996A (en) * | 2019-07-25 | 2019-10-08 | 中交天和机械设备制造有限公司 | The Pneumatic auxiliary device of shield machine earth pressure balance |
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