CN203741851U - Full-ring vacuum precipitation system for quicksand tunnel - Google Patents
Full-ring vacuum precipitation system for quicksand tunnel Download PDFInfo
- Publication number
- CN203741851U CN203741851U CN201320742921.6U CN201320742921U CN203741851U CN 203741851 U CN203741851 U CN 203741851U CN 201320742921 U CN201320742921 U CN 201320742921U CN 203741851 U CN203741851 U CN 203741851U
- Authority
- CN
- China
- Prior art keywords
- tunnel
- precipitation
- quicksand
- downcomer
- vacuum pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001556 precipitation Methods 0.000 title claims abstract description 21
- 239000004576 sand Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000004746 geotextile Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000003631 expected effect Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model belongs to the technical field of precipitation construction in quicksand tunnels, and particularly relates to a full-ring vacuum precipitation system for a quicksand tunnel, and solves the problem that the construction period is influenced as the conventional precipitation method cannot achieve the expected effect of quicksand tunnel construction. The full-ring vacuum precipitation system for the quicksand tunnel includes a plurality of precipitation pipes arranged along the inner side of the inner contour line of the tunnel; the front ends of the precipitation pipes are sealed and welded with clamping legs; the rear ends of the precipitation pipes are connected with a vacuum pump. The full-ring vacuum precipitation system has the following benefits: the precipitation construction technology in quicksand tunnels is effectively improved, the construction period is shortened, besides, the operation is convenient and simple, precipitation and drainage efficiencies in quicksand tunnels are improved, and the construction cost is saved.
Description
Technical field
The utility model belongs to the technical field of dewatering construction in drift sand Tunnel, is specifically related to a kind of drift sand tunnel loopful vacuum precipitation system.
Background technology
Along with the development of national economy, the volume of goods transported that railway is born is also increasing year by year in recent years, and railway more and more gets most of the attention aspect communications and transportation.Railway tunnel under bad border of the distinctive geography of China (China mountain area area account for national total area 66%) arise at the historic moment, and drift sand constructing tunnel is very big in China's difficulty of construction, in drift sand Tunnel, water burst is being faced with challenge greatly in China, because the grains of sand can outflow downstream, common precipitation method is difficult to get a desired effect, thereby affects the construction period.
Summary of the invention
The utility model can not meet the Expected Results of drift sand constructing tunnel in order to solve existing precipitation method, affects the problem of construction period, and a kind of drift sand tunnel loopful vacuum precipitation system is provided.
The utility model adopts following technical scheme to realize:
Drift sand tunnel loopful vacuum precipitation system, comprises the some downcomers that arrange along tunnel inner outline inner side, and downcomer front end seals and be welded with card base, and downcomer rear end connects vacuum pump.
Described downcomer comprises interconnected two parts, and a part is the one section of waterproof pipe being connected with vacuum pump, and remainder is water-permeable pipe, is drilled with permeable eye, and is enclosed with gauze and geotextiles on water-permeable pipe.
Each downcomer rear end connects respectively wired hose, water check valve is set on wired hose and is connected with thick steel pipe respectively, and thick steel pipe connects the water inlet of vacuum pump by other wired hose, and the delivery port of vacuum pump connects header, and header connects drainage pump.
Tunnel bottom is also provided with some layers of downcomer.
The utlity model has following beneficial effect: effectively raise dewatering construction technique in drift sand Tunnel, shortened construction period (3 ~ 4 days), and easy to operate simple, improved in drift sand Tunnel and fallen drainage efficiency, saved construction cost.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model,
Fig. 2 is that downcomer is arranged schematic diagram,
Fig. 3 is downcomer front-end view,
Fig. 4 is the left view of Fig. 3,
In figure: 1-is excavation supporting section country rock not, 2-downcomer, 3-wired hose, 4-water check valve, 5-thick steel pipe, 6-vacuum pump, 7-header, 8-drainage pump, 9-support, 10-shop fixtures, 11-card base.
The specific embodiment
By reference to the accompanying drawings the specific embodiment of the present utility model is described further.
Drift sand tunnel loopful vacuum precipitation system, comprises the some downcomers 2 that arrange along tunnel inner outline inner side, and tunnel bottom is also provided with some layers of downcomer.Downcomer 2 front ends seal and are welded with card base 11, and downcomer 2 rear ends connect vacuum pumps 6.
Downcomer comprises interconnected two parts, and a part is the one section of waterproof pipe being connected with vacuum pump 6, and remainder is water-permeable pipe, is drilled with permeable eye, and is enclosed with gauze and geotextiles on water-permeable pipe.
Each downcomer 2 rear ends connect respectively wired hose 3, water check valve 4 is set on wired hose 3 and is connected with thick steel pipe 5 respectively, thick steel pipe 5 connects the water inlet of vacuum pump 6 by other wired hose, the delivery port of vacuum pump 6 connects header 7, and header 7 connects drainage pump 8.
Method Of Accomplishment of the present utility model, step is as follows:
1, precast dewatering pipe
Downcomer adopts Φ 32 and Φ 25 ratio-frequency welded tubes (GB) to process, the long 1.5m of single-unit length 1.5m(drilling rod), be divided into two kinds of A, B: A kind is water-permeable pipe, pipe shaft is drilled with permeable eye, and two-layer with gauze and geotextiles parcel; B kind is waterproof, without gauze and geotextiles parcel.
2, boring
A), in Tunnel, unwrapping wire is determined bore position
B), rig (XY-2B type) is in place, adopts water to bore boring
C), pull out and bore whole hole, whole hole depth is generally 12m; Attention: when hydraulic pressure is excessive in hole, easily outer spray out of control of drilling rod, need pull out and adopt aid to coordinate rig slowly to extract, and occurs to put dangerous accident.
3, downcomer is installed
Rig pulls out and bores the rear precast dewatering pipe of installing in time, and first joint downcomer front end seals and is welded with bound feet (Φ 8 round steel are the following Fig. 3 of card base), is contained in drill bit leading portion, is close to fitchering, and rig creeps into and installs prefabricated pipe simultaneously; When downcomer is installed, by each single-unit welding, combined, be arranged in drilling rod and make a trip with drilling rod one, general precast dewatering pipe range is 12m.
4, connect vacuum pump precipitation
Under precast dewatering steel pipe, bore after installation (end scar 15cm), to be connected with Φ 32 wired hoses at country rock end precast dewatering pipe, Φ 32 wired hoses that each connection is completed utilize water check valve to collect (long 0.8-1.0m is best) in Φ 65 seamless steel pipes, Φ 65 seamless steel pipes connect Φ 65 wired hoses, by Φ 65 wired hoses, connect vacuum pump and (in vacuum pump, fill clear water before, with anti-gas-leak) take out precipitation to header, outside being appeared by centrifugal pump pump drainage subsequently.
Claims (1)
1. a drift sand tunnel loopful vacuum precipitation system, is characterized in that comprising the some downcomers (2) that arrange along tunnel inner outline inner side, and downcomer (2) front end seals and be welded with card base (11), and downcomer (2) rear end connects vacuum pump (6); Described downcomer comprises interconnected two parts, and a part is the one section of waterproof pipe being connected with vacuum pump (6), and remainder is water-permeable pipe, is drilled with permeable eye, and is enclosed with gauze and geotextiles on water-permeable pipe; Each downcomer (2) rear end connects respectively wired hose (3), water check valve (4) is set on wired hose (3) and is connected with thick steel pipe (5) respectively, thick steel pipe (5) connects the water inlet of vacuum pump (6) by other wired hose, the delivery port of vacuum pump (6) connects header (7), and header (7) connects drainage pump (8); Tunnel bottom is also provided with some layers of downcomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320742921.6U CN203741851U (en) | 2013-11-22 | 2013-11-22 | Full-ring vacuum precipitation system for quicksand tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320742921.6U CN203741851U (en) | 2013-11-22 | 2013-11-22 | Full-ring vacuum precipitation system for quicksand tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203741851U true CN203741851U (en) | 2014-07-30 |
Family
ID=51341672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320742921.6U Expired - Lifetime CN203741851U (en) | 2013-11-22 | 2013-11-22 | Full-ring vacuum precipitation system for quicksand tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203741851U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532864A (en) * | 2014-12-11 | 2015-04-22 | 中铁十九局集团有限公司 | Advanced radial water lowering channel system and advanced radial water lowering method |
| CN104863167A (en) * | 2015-06-02 | 2015-08-26 | 歌山建设集团有限公司 | Quick sand layer anti-burying rainfall device |
| CN113431628A (en) * | 2021-04-13 | 2021-09-24 | 西南交通大学 | Three-dimensional dewatering method for quicksand stratum |
-
2013
- 2013-11-22 CN CN201320742921.6U patent/CN203741851U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532864A (en) * | 2014-12-11 | 2015-04-22 | 中铁十九局集团有限公司 | Advanced radial water lowering channel system and advanced radial water lowering 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 |
| CN104863167A (en) * | 2015-06-02 | 2015-08-26 | 歌山建设集团有限公司 | Quick sand layer anti-burying rainfall device |
| CN104863167B (en) * | 2015-06-02 | 2016-09-21 | 歌山建设集团有限公司 | Drift sand formation is anti-buries dewatering device |
| CN113431628A (en) * | 2021-04-13 | 2021-09-24 | 西南交通大学 | Three-dimensional dewatering method for quicksand stratum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |