CN203050780U - Pipe-jacking ground-water lowering device of low-permeability saturated silty sand stratum tunnel construction - Google Patents
Pipe-jacking ground-water lowering device of low-permeability saturated silty sand stratum tunnel construction Download PDFInfo
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- CN203050780U CN203050780U CN 201320065093 CN201320065093U CN203050780U CN 203050780 U CN203050780 U CN 203050780U CN 201320065093 CN201320065093 CN 201320065093 CN 201320065093 U CN201320065093 U CN 201320065093U CN 203050780 U CN203050780 U CN 203050780U
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Abstract
The utility model discloses a pipe-jacking ground-water lowering device of low-permeability saturated silty sand stratum tunnel construction. The pipe-jacking ground-water lowering device of low-permeability saturated silty sand stratum tunnel construction comprises a ground-water lowering main pipe, a ground-water lowering floral pipe and a pipe orifice water flow concentration pumping system. The ground-water lowering main pipe is horizontally buried in a soil body of one side or two sides of a tunnel arch bottom and additionally, one end of the ground-water lowering main pipe is arranged behind a tunnel face and the other end of the ground-water lowering main pipe is arranged before the tunnel face. The end, behind the tunnel face, of the ground-water lowering main pipe is communicated with the pipe orifice water flow concentration pumping system. Multiple ground-water lowering holes are formed in a pipe wall of a part, before the tunnel face, of the ground-water lowering main pipe. Outer buckling pipes which are communicated with the ground-water lowering holes are welded on an inner side face of the wall of the ground-water lowering main pipe. Internal buckling choke plugs or one-way valves are arranged on the outer buckling pipes. The ground-water lowering floral pipe is arranged in the soil body on the outer side of the wall of the ground-water lowering main pipe. The ground-water lowering floral pipe is communicated with the outer buckling pipes through the ground-water lowering holes. The pipe-jacking ground-water lowering device of low-permeability saturated silty sand stratum tunnel construction solves the problem that ground-water lowering technology of traditional tunnel construction is poor, effectively solves the problem that construction is difficult as water on the tunnel face is much and shortens a tunnel construction period.
Description
Technical field
The utility model relates to a kind of precipitation device that is applied in the construction of the saturated powder fine sand of hyposmosis formation tunnel.
Background technology
In the tunnel construction technology field, if run into the saturated powder fine sand of hyposmosis stratum, the stratum occurs water burst easily and gushes sand because being subjected to disturbance during excavation at present, thus unstability and cause the scope of operation to cave in.At this situation, need grouting and reinforcing is carried out on the stratum before the general constructing tunnel, or adopt and beat the precipitation hole at face and carry out precipitation.But on the powder fine sand stratum of hyposmosis, grouting method is difficult to effectively, and face is beaten precipitation hole precipitation method needs the long period effectively to have a strong impact on the duration again.
The utility model content
The purpose of this utility model is at hyposmosis saturated powder fine sand stratum or similar stratum, push pipe precipitation device in the construction of the saturated powder fine sand of a kind of hyposmosis formation tunnel is provided, solves long technical problem of traditional constructing tunnel dewatering process poor effect or cycle.
For achieving the above object, the utility model adopts following technical scheme: the push pipe precipitation device in the construction of the saturated powder fine sand of a kind of hyposmosis formation tunnel, it is characterized in that: include precipitation and be responsible for, precipitation floral tube and mouth of pipe current are concentrated pumping system, described precipitation is responsible for and is made by thick walled steel tube, precipitation person in charge level is embedded in the soil body that encircles both sides, the end or a side in the tunnel and an end is positioned at the face rear, the other end is positioned at front of tunnel heading, precipitation is responsible for an end that is positioned at the face rear and is concentrated pumping system to be communicated with mouth of pipe current, precipitation is responsible on the tube wall of the part be positioned at front of tunnel heading and is had a plurality of precipitation aperture, be welded to connect the outer button pipe that is communicated with the precipitation aperture on the tube wall medial surface that precipitation is responsible for, in being provided with, detains silently or one way valve outer button pipe, be provided with the precipitation floral tube in the soil body in the tube wall outside that precipitation is responsible for, and the precipitation floral tube is communicated with outer button pipe by the precipitation aperture.
Described precipitation is responsible for the length of the part that is positioned at front of tunnel heading can be greater than 50m.
The caliber that described precipitation is responsible for can be 1.5～2m.
The length of described outer button pipe can be 40～60mm.
The caliber of the diameter in described precipitation aperture and outer button pipe big or small consistent all can be 80～120mm.
Described precipitation is responsible for and can be made of welded connection by a section thick walled steel tube, and the length specification of single-unit thick walled steel tube can be 2～9m.
Compared with prior art the utlity model has following characteristics and beneficial effect: the utility model is that a kind of precipitation that is applied in the tunnel construction technology field is responsible for the precipitation device, is specially at a kind of device that designs at hyposmosis saturated powder fine sand stratum or similar stratum.
The utility model has solved the problem of traditional constructing tunnel dewatering process poor effect, and has solved the problem of the constructional difficulties that causes because of the many water of face, has namely effectively improved the working environment of face, has shortened the constructing tunnel duration.
The utility model also can successful precipitation when running into the underground river, and can make current concentrate discharging, has realized civilized construction.
Description of drawings
The utility model is described in more detail below in conjunction with accompanying drawing.
Fig. 1 is that the utility model is embedded in the tunnel arch sectional schematic diagram at the end.
Fig. 2 is that the utility model one end is positioned at the schematic diagram that face rear, the other end are positioned at front of tunnel heading.
Reference numeral: the 1-precipitation person in charge, 2-precipitation floral tube, 3-mouth of pipe current concentrate in pumping system, the 4-button silently or one way valve, 5-tunnel, 6-face, 7-advance support, 8-preliminary bracing, 9-secondary lining, 10-are buckled pipe outward.
The specific embodiment
Embodiment is referring to Fig. 1, shown in Figure 2, and the push pipe precipitation device in the construction of the saturated powder fine sand of this hyposmosis formation tunnel includes the precipitation person in charge 1, precipitation floral tube 2 and mouth of pipe current and concentrates pumping system 3.
Described precipitation is responsible for 1 and is made by thick walled steel tube and (to be made of welded connection by a section thick walled steel tube, the length specification of single-unit thick walled steel tube is 2～9m), precipitation is responsible in the soil body that 1 level is embedded in tunnel arch both sides, the end and an end is positioned at the face rear, the other end is positioned at front of tunnel heading, precipitation is responsible for an end that is positioned at the face rear and is concentrated pumping system 3 to be communicated with mouth of pipe current, precipitation is responsible on the tube wall of the part be positioned at front of tunnel heading at a certain distance along circumferentially having a plurality of precipitation aperture, be welded to connect the outer button pipe 10 that is communicated with the precipitation aperture on the precipitation person in charge 1 the tube wall medial surface, in being provided with, detains silently or one way valve 4 outer button pipe 10, precipitation is responsible in the soil body in 1 the tube wall outside and is provided with precipitation floral tube 2, and precipitation floral tube 2 is managed 10 by the precipitation aperture with outer button and is communicated with.Precipitation floral tube 2 is used for collecting the water in the stratum.
In the present embodiment, it is that 50～100m(determines according to stratum characteristic and construction needs that precipitation is responsible for the 1 length a that is positioned at the part of front of tunnel heading).The precipitation person in charge 1 caliber is 1.5～2m.The length of outer button pipe 10 is 40～60mm.The caliber of the diameter in precipitation aperture and outer button pipe 10 big or small consistent is 80～120mm.
In other embodiments, to be responsible for also can be that light is embedded in the tunnel arch end wherein in the soil body of a side to precipitation.
This precipitation device is before tunnel excavation, in the tunnel scope or near the tunnel, adopts earlier artificial or mechanical means to head into the steel pipe of certain-length along the tunnel direction, carries out leading precipitation then in steel pipe, for tunnel excavation creates favorable conditions.Described push pipe also has flat partial function of leading, as the function of leading announcement tunnel earth layer in front.
Installation steps of the present utility model are as follows:
Step 1: the construction plant cleaning, pipe jacking equipment is installed.
Step 2: be responsible at precipitation and carry out the processing in precipitation aperture, will detain outward pipe 10 be welded on precipitation be responsible for go up and install on the button pipe 10 outside in button silently or one way valve 4.Specifically, the constructor stands in precipitation and is responsible for inner, on being responsible for, precipitation cuts out several precipitation apertures (such as the precipitation aperture of Φ 108mm) by designing requirement earlier, and then button pipe 10(is that 50mm, diameter are that 108 mm, pipe thickness are the outer button pipe of 8mm such as length outside burn-oning in pipe), do not allow outer button pipe expose the outer wall that precipitation is responsible for during welding, in order to avoid influence the jacking that precipitation is responsible for, detain silently or one way valve 4 in screwing on again at last.
Step 3: jacking construction, namely finish the jacking that precipitation is responsible for by the pipe-jacking technology requirement.
Step 4: sealing push-bench head, carry out the head waterproof.
Step 5: the constructor stands in precipitation and is responsible for innerly, by the precipitation aperture, set the precipitation hole at the soil body, and in the precipitation hole precipitation floral tube is installed.That is to say that the precipitation person in charge 1 is responsible for the precipitation floral tube 2 that circumferentially sets some and length along precipitation after arranging and finishing at a certain distance.
The order that sets the precipitation hole is from the head position from inside to outside.The precipitation hole set available two kinds of methods.Method one: turn on precipitation be responsible on the outer button pipe 10 of installed inside interior button silently or one way valve 4, earlier use underground drill rig (run of steel is 89mm as 450mm, diameter) to set the precipitation hole, after withdrawing from the drilling rod of underground drill rig, to connect chi with the precipitation floral tube of filter screen again heads into, and in the precipitation hole, wedge the anticreep frame, detain silently or one way valve in screwing at last.Method two: turn on precipitation be responsible on the outer button pipe 10 of installed inside interior button silently or one way valve 4, use high-pressure hose churning shower nozzle earlier, utilize the high-pressure water jet cutting to intend the excavation soil body, behind the loose soil layer, to connect chi with the precipitation floral tube of filter screen again heads into, and in the precipitation hole, wedge the anticreep frame, detain silently or one way valve in screwing at last.
Step 6: pumping system 3 in the mounting pipe saliva adfluxion.
During use, open precipitation earlier and be responsible for inboard all interior buttons silently or one way valve 4, then start mouth of pipe current and concentrate pumping system 3, after current compile in precipitation is responsible for by the precipitation floral tube then, concentrate pumping system 3 to be responsible for the concentrated escape canal that is pumped to of the mouth of pipe by precipitation by mouth of pipe current again.
Claims (6)
1. the push pipe precipitation device during the saturated powder fine sand of a hyposmosis formation tunnel is constructed, it is characterized in that: include precipitation and be responsible for (1), precipitation floral tube (2) and mouth of pipe current are concentrated pumping system (3), described precipitation is responsible for (1) and is made by thick walled steel tube, the precipitation person in charge (1) level is embedded in the soil body that encircles both sides, the end or a side in the tunnel and an end is positioned at the face rear, the other end is positioned at front of tunnel heading, precipitation is responsible for an end that is positioned at the face rear and is concentrated pumping system (3) to be communicated with mouth of pipe current, precipitation is responsible on the tube wall of the part be positioned at front of tunnel heading and is had a plurality of precipitation aperture, be welded to connect the outer button pipe (10) that is communicated with the precipitation aperture on the precipitation person in charge's (1) the tube wall medial surface, in being provided with, detains silently or one way valve (4) outer button pipe (10), precipitation is responsible in the soil body in the tube wall outside of (1) and is provided with precipitation floral tube (2), and precipitation floral tube (2) is managed (10) by the precipitation aperture with outer button and is communicated with.
2. the push pipe precipitation device during the saturated powder fine sand of hyposmosis according to claim 1 formation tunnel is constructed is characterized in that: described precipitation is responsible for (1) and is positioned at the length (a) of the part of front of tunnel heading greater than 50m.
3. the push pipe precipitation device during the saturated powder fine sand of hyposmosis according to claim 1 formation tunnel is constructed is characterized in that: the caliber that described precipitation is responsible for (1) is 1.5～2m.
4. the push pipe precipitation device during the saturated powder fine sand of hyposmosis according to claim 1 formation tunnel is constructed is characterized in that: the length of described outer button pipe (10) is 40～60mm.
5. the push pipe precipitation device in the saturated powder fine sand of the hyposmosis according to claim 1 formation tunnel construction is characterized in that: the diameter in described precipitation aperture and outer button are managed caliber big or small consistent of (10), are 80～120mm.
6. the push pipe precipitation device during the saturated powder fine sand of hyposmosis according to claim 1 formation tunnel is constructed is characterized in that: described precipitation is responsible for (1) and is made of welded connection by a section thick walled steel tube, and the length specification of single-unit thick walled steel tube is 2～9m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320065093 CN203050780U (en) | 2013-02-05 | 2013-02-05 | Pipe-jacking ground-water lowering device of low-permeability saturated silty sand stratum tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320065093 CN203050780U (en) | 2013-02-05 | 2013-02-05 | Pipe-jacking ground-water lowering device of low-permeability saturated silty sand stratum tunnel construction |
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| Publication Number | Publication Date |
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| CN203050780U true CN203050780U (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320065093 Expired - Fee Related CN203050780U (en) | 2013-02-05 | 2013-02-05 | Pipe-jacking ground-water lowering device of low-permeability saturated silty sand stratum tunnel construction |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628915A (en) * | 2013-11-28 | 2014-03-12 | 中铁十三局集团有限公司 | Dewatering and drainage method for large-section water-rich saturation fine-silt tunnel |
| CN103742191A (en) * | 2014-01-24 | 2014-04-23 | 中铁第一勘察设计院集团有限公司 | Water-rich tunnel pilot long-distance large-diameter precipitation channel and construction method thereof |
| CN103939142A (en) * | 2014-03-31 | 2014-07-23 | 中铁工程设计咨询集团有限公司 | Tunnel drainage system with controllable water pressure and water pressure controlling device thereof |
| CN104532864A (en) * | 2014-12-11 | 2015-04-22 | 中铁十九局集团有限公司 | Advanced Radial Precipitation Channel System and Advanced Radial Precipitation Method |
-
2013
- 2013-02-05 CN CN 201320065093 patent/CN203050780U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628915A (en) * | 2013-11-28 | 2014-03-12 | 中铁十三局集团有限公司 | Dewatering and drainage method for large-section water-rich saturation fine-silt tunnel |
| CN103742191A (en) * | 2014-01-24 | 2014-04-23 | 中铁第一勘察设计院集团有限公司 | Water-rich tunnel pilot long-distance large-diameter precipitation channel and construction method thereof |
| CN103939142A (en) * | 2014-03-31 | 2014-07-23 | 中铁工程设计咨询集团有限公司 | Tunnel drainage system with controllable water pressure and water pressure controlling device thereof |
| CN103939142B (en) * | 2014-03-31 | 2016-01-20 | 中铁工程设计咨询集团有限公司 | Hydraulic pressure controllable type tunnel drainage system and hydraulic control device thereof |
| CN104532864A (en) * | 2014-12-11 | 2015-04-22 | 中铁十九局集团有限公司 | Advanced Radial Precipitation Channel System and Advanced Radial Precipitation Method |
| CN104532864B (en) * | 2014-12-11 | 2016-07-06 | 中铁十九局集团有限公司 | Advanced radial precipitation channel system and advanced radial precipitation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20210205 |
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| CF01 | Termination of patent right due to non-payment of annual fee |