CN203081452U - Compound double-layer freezing shaft wall with sprayed film interlayer - Google Patents
Compound double-layer freezing shaft wall with sprayed film interlayer Download PDFInfo
- Publication number
- CN203081452U CN203081452U CN 201320035271 CN201320035271U CN203081452U CN 203081452 U CN203081452 U CN 203081452U CN 201320035271 CN201320035271 CN 201320035271 CN 201320035271 U CN201320035271 U CN 201320035271U CN 203081452 U CN203081452 U CN 203081452U
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- CN
- China
- Prior art keywords
- wall
- shaft
- film interlayer
- sprayed film
- layer freezing
- 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 - Fee Related
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- 239000011229 interlayer Substances 0.000 title claims abstract description 37
- 239000010410 layer Substances 0.000 title claims abstract description 29
- 238000007710 freezing Methods 0.000 title claims abstract description 25
- 230000008014 freezing Effects 0.000 title claims abstract description 25
- 150000001875 compounds Chemical class 0.000 title abstract description 7
- 239000007921 spray Substances 0.000 claims description 23
- 239000002131 composite material Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 239000004567 concrete Substances 0.000 claims description 10
- 239000002689 soil Substances 0.000 claims description 9
- 229920002396 Polyurea Polymers 0.000 claims description 7
- 239000004814 polyurethane Substances 0.000 claims description 7
- 238000009954 braiding Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229920003226 polyurethane urea Polymers 0.000 claims description 6
- 239000011150 reinforced concrete Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 10
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 238000004227 thermal cracking Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000009414 blockwork Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
Provided is a compound double-layer freezing shaft wall with a sprayed film interlayer. The compound double-layer freezing shaft wall with the sprayed film interlayer is applicable to shafts which are constructed through a freezing method. The compound double-layer freezing shaft wall with the sprayed film interlayer comprises the sprayed film interlayer, a shaft outer wall and a shaft inner wall. The compound double-layer freezing shaft wall with the sprayed film interlayer is characterized in that the shaft outer wall is arranged inside a frozen earth wall, the sprayed film interlayer is arranged inside the shaft outer wall, the sprayed film interlayer and the shaft outer wall are bonded into a whole, the sprayed film interlayer is used for filling a pitted surface which exists on the surface of the shaft outer wall in a filling-in mode, and the shaft inner wall is arranged inside the sprayed film interlayer. The compound double-layer freezing shaft wall with the sprayed film interlayer has the advantages of being simple in construction, reducing labor intensity, shortening a construction period, being good in waterproof performance of a shaft, reducing long-term investment cost, and prolonging the service life of the shaft.
Description
Technical field
The present invention relates to a kind of composite double layer freezing shaft wall, be particularly useful for pit shaft with construction freezing method with spray film interlayer.
Background technology
Freezing process is before pit shaft is dug; with the method for artificial cooling, the rock-soil layer around the pit shaft is frozen into cylinder---the frost wall of sealing, with opposing water, soil pressure; a kind of special sinking method of block work is dug in the contact of isolated underground water and pit shaft then under the protection of frost wall.Since German engineer Bo Cishu invention freezing process in 1883, freezing process has obtained using widely in the world, becomes the effective means by the bad ground shaft building.Since China adopts the freeze-wellboring technology nineteen fifty-five first, more than 500 pit shaft of having constructed, total linear meter(lin.m.) reaches more than the 120km.At present, China builds pitshaft in alluvium thickness greater than the area more than the 50m, all adopts construction freezing method in most cases.
Adopt the early stage of freeze-wellboring in China, the alluvium that pit shaft passes is shallow, and pit shaft generally adopts the individual layer steel concrete borehole wall.Borehole wall main body---steel concrete directly contacts with well group.Because a upper and lower section high existence that connects stubble seam, and the existence of borehole wall thermal cracking, locate to leak connecing stubble and crack at the frost wall most of boreholes wall in back that thaw, especially alluvium thickness is greater than the pit shaft of 100m, and the pit shaft water leakage is very big, can not satisfy instructions for use.Under forced situation,, developed in 1976 ~ 1988 years and the composite shaft lining technology that generally adopts at present by practice and research.The composite shaft lining structure is by the internal layer borehole wall, borehole wall interlayer, outer shaft wall.Outer shaft wall mainly plays the temporary lining effect, is used to resist pressure of freezing wall in construction period, the permanent effectively soil pressure of opposing after frost wall thaws.Outer shaft wall adopts the construction of the descending short section pick block method of segmentation to form.Owing to connect the stubble seam on the outer shaft wall by present technology construction, so outer shaft wall itself is non-water-tight.Therefore must be after the outer shaft wall construction be finished, the internal layer borehole wall of constructing continuously from bottom to top.The internal layer borehole wall is mainly used in the pressure and the water shutoff of opposing water.Borehole wall interlayer adopts plastic plate, malthoid etc. more, and its effect is to remove the constraint of outer shaft wall to the internal layer borehole wall, reduces the constraint thermal stresses of the internal layer borehole wall.The internal layer borehole wall seldom connects stubble seam, the thermal cracking on the internal layer borehole wall also seldom, the water isolating of such internal layer borehole wall is fine.The guiding theory of the two-layer compound borehole wall is with the water shutoff of the internal layer borehole wall.Although the composite shaft lining technology has solved the borehole wall serious problem of leaking, but increase along with the pit shaft cutting depth, thickness of shaft wall increases gradually, especially inner wall thickness, when inner wall thickness was big, as concrete in mass, internal-wall concrete produced the crack because of the constraint certainly of inside, interlayer plastic plate bridging arrangement or fusion leakiness can't play waterproof action, will face the problem that pit shaft leaks.
Summary of the invention
The purpose of this utility model is that the spray film interlayer that provides a kind of spraying polyurethane or polyurea waterproof coating material to form in order to solve existing issue replaces sandwich materials such as traditional plastic plate, malthoid.
The purpose of this utility model can realize in the following manner: as follows in conjunction with the accompanying drawings: a kind of composite double layer freezing shaft wall with spray film interlayer, comprise spray film interlayer, pit shaft outer wall and shaft in wall, the pit shaft outer wall is positioned at the frozen soil pars intramuralis, spray film interlayer is positioned at the outer pars intramuralis of pit shaft, and be bonded to as a whole with the pit shaft outer wall, the pitted skin filling benefit that the pit shaft outer wall surface exists is flat, and the inside of spray film interlayer is shaft in wall.
Described spray film interlayer is 2 ~ 3mm waterproof film that flush coater spraying polyurethane or polyurea waterproof coating material form, wherein polyurethane or polyurea waterproof coating material are for to make with well known materials and technology, material can bear the freeze thawing circulation simultaneously, stable-30 ℃ ~ 80 ℃ property retentions, nontoxic, odorlessness, has anti-flammability
Described pit shaft outer wall forms known reinforced concrete structure for the reinforcing bar and the cast-in-place concrete structure of braiding.
Described shaft in wall forms known reinforced concrete structure for the reinforcing bar and the cast-in-place concrete structure of braiding.
The beneficial effects of the utility model are: construction is simple, reduces labor intensity, and shortens the construction period, and the pit shaft water resistance is good, has saved the long-term investment cost, has increased pit shaft application life.
Description of drawings
Accompanying drawing is the utility model band spray interlayer composite double layer freezing shaft wall;
In the accompanying drawing 1, spray film interlayer, 2, the pit shaft outer wall, 3, shaft in wall, 4, the frozen soil wall, 5, the wellbore centre line, 6, driving face.
The specific embodiment
As follows in conjunction with the accompanying drawings: a kind of composite double layer freezing shaft wall with spray film interlayer, comprise spray film interlayer 1, pit shaft outer wall 2 and shaft in wall 3, pit shaft outer wall 2 is positioned at frozen soil wall 4 inside, spray film interlayer 1 is positioned at pit shaft outer wall 2 inside, and be bonded to as a whole with pit shaft outer wall 2, the pitted skin filling benefit that pit shaft outer wall 2 surfaces exist is flat, and the inside of spray film interlayer 1 is shaft in wall 3.
Described spray film interlayer 1 is 2 ~ 3mm waterproof film that flush coater spraying polyurethane or polyurea waterproof coating material form, wherein polyurethane or polyurea waterproof coating material are for to make with well known materials and technology, material can bear the freeze thawing circulation simultaneously, stable-30 ℃ ~ 80 ℃ property retentions, nontoxic, odorlessness, has anti-flammability
Described pit shaft outer wall 2 forms known reinforced concrete structure for the reinforcing bar and the cast-in-place concrete structure of braiding.
Described shaft in wall 3 forms known reinforced concrete structure for the reinforcing bar and the cast-in-place concrete structure of braiding.
The work progress of the composite double layer freezing shaft wall of this band spray film interlayer is as follows: it is high to adopt machinery or drilling and blasting method to excavate a section under 4 protections of frozen soil wall; build and form pit shaft outer wall 2; pit shaft outer wall 2 mainly plays the temporary lining effect; be used to resist pressure of freezing wall in construction period, the permanent effectively soil pressure of opposing after frost wall thaws.It is high to continue next section of driving formation, take off the masterplate on the high pit shaft outer wall of the preceding paragraph 2 surfaces, the high concreting that carries out of this section is formed pit shaft outer wall 2, form 2 ~ 3mm spray film interlayer 1 at high pit shaft outer wall 2 surperficial spraying polyurethanes of the preceding paragraph or polyurea materials simultaneously, so the circulation construction is to 200 meters left and right sides Duan Gao, carry out known shaft in wall 3 continuous jacket wall constructions to beginning the driving place, shaft in wall 3 is mainly used in the pressure and the water shutoff of opposing water, forms the freezing shaft wall of the composite double layer shaft wall structure of pit shaft outer wall 2 and shaft in wall 3 folder spray film interlayers 1 form.Construction circulate as mentioned above until the design mine shaft depth.
Claims (4)
1. composite double layer freezing shaft wall with spray film interlayer, comprise spray film interlayer (1), pit shaft outer wall (2) and shaft in wall (3), it is characterized in that: pit shaft outer wall (2) is positioned at frozen soil wall (4) inside, spray film interlayer (1) is positioned at pit shaft outer wall (2) inside, and with pit shaft outer wall (2) be bonded to as a whole, the spray film interlayer (1) inside be shaft in wall (3).
2. composite double layer freezing shaft wall according to claim 1 is characterized in that: described spray film interlayer (1) is 2 ~ 3mm waterproof film of flush coater spraying polyurethane or polyurea waterproof coating material formation.
3. composite double layer freezing shaft wall according to claim 1 is characterized in that: described pit shaft outer wall (2) forms known reinforced concrete structure for the reinforcing bar and the cast-in-place concrete structure of braiding.
4. composite double layer freezing shaft wall according to claim 1 is characterized in that: described shaft in wall (3) forms known reinforced concrete structure for the reinforcing bar and the cast-in-place concrete structure of braiding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320035271 CN203081452U (en) | 2013-01-23 | 2013-01-23 | Compound double-layer freezing shaft wall with sprayed film interlayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320035271 CN203081452U (en) | 2013-01-23 | 2013-01-23 | Compound double-layer freezing shaft wall with sprayed film interlayer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203081452U true CN203081452U (en) | 2013-07-24 |
Family
ID=48827301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320035271 Expired - Fee Related CN203081452U (en) | 2013-01-23 | 2013-01-23 | Compound double-layer freezing shaft wall with sprayed film interlayer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203081452U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356858A (en) * | 2021-07-13 | 2021-09-07 | 中煤第一建设有限公司 | Non-equal-strength composite freezing wall freezing method |
| CN113586060A (en) * | 2021-08-27 | 2021-11-02 | 中煤西安设计工程有限责任公司 | Construction method for freezing common tunneling prefabricated well wall support |
-
2013
- 2013-01-23 CN CN 201320035271 patent/CN203081452U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356858A (en) * | 2021-07-13 | 2021-09-07 | 中煤第一建设有限公司 | Non-equal-strength composite freezing wall freezing method |
| CN113586060A (en) * | 2021-08-27 | 2021-11-02 | 中煤西安设计工程有限责任公司 | Construction method for freezing common tunneling prefabricated well wall support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20140123 |