CN202865859U - Weak freezing sealing water-stopping structure of soil body between pipe roofs - Google Patents
Weak freezing sealing water-stopping structure of soil body between pipe roofs Download PDFInfo
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- CN202865859U CN202865859U CN 201220390166 CN201220390166U CN202865859U CN 202865859 U CN202865859 U CN 202865859U CN 201220390166 CN201220390166 CN 201220390166 CN 201220390166 U CN201220390166 U CN 201220390166U CN 202865859 U CN202865859 U CN 202865859U
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Abstract
The utility model provides a weak freezing sealing water-stopping structure of a soil body between pipe roofs. The weak freezing sealing water-stopping structure comprises a plurality of pipe roof steel pipes, freezing pipes and temperature-measuring pipes, wherein each freezing pipe is arranged inside each pipe roof steel pipe in a sleeved mode, and the temperature-measuring pipes and the freezing pipes are symmetrically arranged. The weak freezing sealing water-stopping structure is characterized in that each freezing pipe is close to each internal pipe wall of each pipe roof steel pipe, and each freezing tube is arranged in a position with an included angle of 15-20 degrees formed between the waistline outer side of each pipe roof steel pipe and the horizontal line in a symmetrical mode. Heat-conducting concrete is coated on the exterior of each freezing pipe so that a convex-lens-shaped concrete body is formed on the exterior of each freezing pipe, and the freezing pipes, the heat-conducting concrete and roof pipes become gapless cooling capacity conductors. Refrigerating liquid is filled in the freezing pipes. Non-heat-conduction common concrete and/or plain mixed slurry are filled in residual space inside each pipe roof steel pipe. The weak freezing sealing water-stopping structure achieves sealing water stopping between the pipe roofs in a weak freezing mode, and is short in active freezing period, little in cooling capacity of the freezing maintenance period compared with a conventional freezing method, short in box culvert ejection construction period, and low in weak freezing water-stopping roof engineering cost.
Description
Technical field
The utility model is mainly used in the Large Tube curtain construction works, provide a kind of a little less than the pipe interlude forms the pipe interlude soil body that sealing keeps off native curtain the freeze seal water-stopping structure.
Background technology
In region of FuShui pipe curtain jack-in process, usually need to form water-stop curtain at the pipe interlude at present, to stop the outside tube water body, play simultaneously the native supporting role of gear, the control stratum settlement.Conventional method generally adopts the pipe outer clasp to connect, or soil body horizontal rotary jet grouting between pipe, its major defect is, when pipe curtain jacking distance was longer, steel pipe unavoidably rotated in jack-in process, the easier fracture of snap close, cause the sealing failure, simultaneously, the pipe outer clasp has certain disturbance to the soil body between pipe, also is unfavorable for managing the portal shutoff of outer pressurize anti-drag mud; And the restriction of horizontal jet grouting injection technology, for long-distance pipe-jacking construction, its stagnant water effect is difficult to also guarantee that construction risk is larger.Freezing process has waterproof and the strengthening stratum ability is strong, the advantage such as polluted water, frost wall shape flexible design not, but conventional freezing process at pipe curtain in the outer and engineering excavation line easy generation need not in a large number the soil body that freezes, its frozen swell and melt settlement phenomenon is obvious on the impact of surrounding environment, has restricted its propagation and employment in pipe curtain jacking engineering.
Summary of the invention
The purpose of this utility model is to solve in the conventional tube curtain jack-in process methods such as adopting the snap close connection and manages a shortcoming of soil body sealing, the weak freeze seal water-stopping structure of the pipe interlude soil body that provide a kind of and design and construct conveniently, stagnant water effect is good, construction quality easily guarantees is with the support of effective realization pipe curtain and freeze the sealing effect of body.
In order to achieve the above object, the technical solution of the utility model is:
The weak freeze seal water-stopping structure of a kind of pipe interlude soil body, comprise a plurality of pipe curtain steel pipes and be set in a freezing pipe and one and the symmetrically arranged temperature tube of described freezing pipe in described each pipe curtain steel pipe, it is characterized in that: described each freezing pipe is near the inner tubal wall of described each pipe curtain steel pipe, and stringcourse outside that described each freezing pipe is positioned at each pipe curtain steel pipe is 15～20 ° with horizon angle (α) and locates and be symmetrical arranged; Outside described each freezing pipe, smear the heat conduction concrete, make the outer convex lens shape concrete body that forms of described freezing pipe, make freezing pipe, heat conduction concrete and curtain pipe become gapless cold conductor, fill refrigerating fluid in the described freezing pipe; The non-heat conduction ordinary concrete of remaining space filling in described each pipe curtain steel pipe.
Further, the technical solution of the utility model can also be:
Described freezing pipe is the seamless steel pipe of Φ 73～89mm.
Equidistant laying measuring point on described each temperature tube.
The temperature of described refrigerating fluid is-20～-30 ℃.
The utility model is with the hermetic seal of weak freezing method realization pipe interlude, and its advantage is:
(1) in cohesive soil, use because the cohesive soil transmission coefficient is little, a little less than freeze very easily sealing; In sand, use, easier to be freezing though transmission coefficient is large, hand over circle faster;
(2) owing to freeze a little less than being, actively freezing period, lack, and it is few to freeze the more conventional freezing process of maintenance phase confession cold; Box culvert jacking technique short than other scheme durations, and corresponding freezing period is short so that a little less than to freeze the water-stop curtain Project Cost Control relatively low;
(3) it is little to freeze column volume, the frost heave volume is very small in its forming process, frost heaving amount can attenuate in freezing around the post among a small circle, freeze the post present position and determined that frost-heave force is main along the pipe curtain vertically to pipe curtain squeezing action, therefore, the Frost heave and thaw subsidence of weak freezing curtain can not exert an influence to surrounding environment, the safety of entail dangers to pipe curtain and box culvert jacking construction not yet;
(4) the weak freezing process sealing of pipe curtain is removed snap close from and is connected, and has greatly reduced difficulty and the risk of pipe curtain construction, will advance effectively the development of box culvert jacking engineering under the supporting of ultra-long tube curtain.
Description of drawings
Fig. 1 is the structural representation of the weak freeze seal water-stopping structure of the pipe interlude soil body of the present utility model.
Fig. 2 is weak freezing efficiency schematic diagram of the present utility model.
The figure number explanation
1-pipe curtain steel pipe 2-freezing pipe 3-temperature tube 4-heat conduction concrete 5-ordinary concrete
6-freezes the body 7-box culvert external structure face 8-soil body
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Freeze seal water-stopping structure a little less than of the present utility model a kind of pipe interlude soil body shown in Fig. 1-2, comprise a plurality of pipe curtain steel pipes 1 and be set in interior freezing pipe 2 and one and the symmetrically arranged temperature tube 3 of this freezing pipe of each pipe curtain steel pipe, each freezing pipe 2 is near the inner tubal wall of each pipe curtain steel pipe 1, and stringcourse outside that each freezing pipe 2 is positioned at each pipe curtain steel pipe 1 is 15～20 ° with horizon angle α and locates and be symmetrical arranged; Outside each freezing pipe 2, smear heat conduction concrete 4, make the outer convex lens shape concrete body that forms of freezing pipe, at each freezing pipe 2 interior filling refrigerating fluid; Thereby make freezing pipe 2, heat conduction concrete 4 and pipe curtain steel pipe 1 become gapless cold conductor, the non-heat conduction ordinary concrete 5 of remaining space filling in each pipe curtain steel pipe.
The temperature of freezing the refrigerating fluid of casing pack of the present utility model is preferably-20～-30 ℃.
The weak freezing technology of the utility model utilization pipe curtain is directly fixed on freezing pipe the desired location of managing in the curtain steel pipe, thereby cold conducts to soil body formation between pipe curtain steel pipe by the tube wall of managing the curtain steel pipe and freezes body 6, freezing body joins with pipe curtain steel pipe and forms closed water-stop curtain, need not between the adjacent freezing body to link to each other to form and hands over circle.The supporting role of pipe curtain and the sealing effect of freezing body jointly ensure box culvert jacking construction smoothly and safety.
In this example, a side is arranged freezing pipe in the every pipe curtain steel pipe, and corresponding opposite side is laid temperature tube.Specifically, layout of freezing pipes is on the curtain pipe stringcourse outside and 15～20 ° of inner tubal walls of locating of horizon angle α.Freezing pipe can be selected the seamless steel pipe of Φ 73～89mm, selects corresponding feed pipe according to the freezing pipe specification.
The utility model better conducts for cold, smears out a convex lens shape concrete body with heat-conduction concrete outside freezing pipe, makes freezing pipe, heat conduction concrete, curtain pipe become gapless cold conductor.
The utility model is equidistant laying measuring point (being demonstration among the figure) on temperature tube also.
The utility model frost wall structure design: the relative tertiary location design frost wall transverse shape according to engineering design pipe curtain and underground water mainly is divided into " mouth " font (totally-enclosed), grooved (semiclosed) etc.
Frost wall thickness of the present utility model: design is take frigo as the center of circle, and when the clear spacing between the pipe curtain steel pipe≤200mm, freezing radius theoretical value is controlled at 300mm, and concrete engineering designs freezing radius according to an actual curtain pipe clear spacing.
Freezing stratum as rapid of the present utility model running with safeguard: Freezing stratum as rapid positive freezing period, will be by the running of design maximum cooling capacity, refrigerating fluid temperature-20～-30 ℃.Strengthen freezing the observation work that body forms, in time forecast is freezed body and is formed situation.
Positive about 5～10 days of freezing period.
Freeze to safeguard that the phase cooling temperature is controlled at-5～-10 ℃, control freezing body radius remains on about 300mm, the further developing of strict control freezing body.Near the soil temperature frequent observation tube curtain is adjusted for cold, with carrying out smoothly of assurance jacking construction in good time in the box culvert jack-in process.
Above-mentionedly only several specific embodiments in the utility model are illustrated; but can not be as protection domain of the present utility model; every equivalence of having done according to the design spirit in the utility model changes or modifies, and all should think to fall into protection domain of the present utility model.
Claims (4)
1. manage the weak freeze seal water-stopping structure of the interlude soil body for one kind, comprise a plurality of pipe curtain steel pipes and be set in a freezing pipe and one and the symmetrically arranged temperature tube of described freezing pipe in described each pipe curtain steel pipe, it is characterized in that: described each freezing pipe is near the inner tubal wall of described each pipe curtain steel pipe, and stringcourse outside that described each freezing pipe is positioned at each pipe curtain steel pipe is 15～20 ° with horizon angle (α) and locates and be symmetrical arranged; Outside described each freezing pipe, smear the heat conduction concrete, make the outer convex lens shape concrete body that forms of described freezing pipe, make freezing pipe, heat conduction concrete and curtain pipe become gapless cold conductor, fill refrigerating fluid in the described freezing pipe; The non-heat conduction ordinary concrete of remaining space filling in described each pipe curtain steel pipe.
2. the weak freeze seal water-stopping structure of a kind of pipe interlude soil body according to claim 1, it is characterized in that: described freezing pipe is the seamless steel pipe of Φ 73～89mm.
3. the weak freeze seal water-stopping structure of a kind of pipe interlude soil body according to claim 1 is characterized in that: equidistant laying measuring point on described each temperature tube.
4. the weak freeze seal water-stopping structure of a kind of pipe interlude soil body according to claim 3, it is characterized in that: the temperature of described refrigerating fluid is-20～-30 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220390166 CN202865859U (en) | 2012-08-08 | 2012-08-08 | Weak freezing sealing water-stopping structure of soil body between pipe roofs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220390166 CN202865859U (en) | 2012-08-08 | 2012-08-08 | Weak freezing sealing water-stopping structure of soil body between pipe roofs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202865859U true CN202865859U (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220390166 Expired - Lifetime CN202865859U (en) | 2012-08-08 | 2012-08-08 | Weak freezing sealing water-stopping structure of soil body between pipe roofs |
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| Country | Link |
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| CN (1) | CN202865859U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088652A (en) * | 2014-07-22 | 2014-10-08 | 中交第二公路勘察设计研究院有限公司 | Method for horizontal dynamic controlled-freezing water stopping between pipe roofs |
| CN104832196A (en) * | 2015-03-31 | 2015-08-12 | 中铁时代建筑设计院有限公司 | Pipe roof freezing method supporting structure and construction method thereof |
| CN105863646A (en) * | 2016-03-30 | 2016-08-17 | 中煤特殊凿井有限责任公司 | Freezing construction method in steel pipe curtain of large-section subsurface tunnel |
-
2012
- 2012-08-08 CN CN 201220390166 patent/CN202865859U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088652A (en) * | 2014-07-22 | 2014-10-08 | 中交第二公路勘察设计研究院有限公司 | Method for horizontal dynamic controlled-freezing water stopping between pipe roofs |
| CN104088652B (en) * | 2014-07-22 | 2016-02-24 | 中交第二公路勘察设计研究院有限公司 | A kind of pipe interlude horizontal dynamic controlling freezes water-stop method |
| CN104832196A (en) * | 2015-03-31 | 2015-08-12 | 中铁时代建筑设计院有限公司 | Pipe roof freezing method supporting structure and construction method thereof |
| CN105863646A (en) * | 2016-03-30 | 2016-08-17 | 中煤特殊凿井有限责任公司 | Freezing construction method in steel pipe curtain of large-section subsurface tunnel |
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| 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: 20130410 |