CN218407467U - Waterproof structure of thermal power undercut tunnel arch wall movement joint - Google Patents
Waterproof structure of thermal power undercut tunnel arch wall movement joint Download PDFInfo
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- CN218407467U CN218407467U CN202222450748.4U CN202222450748U CN218407467U CN 218407467 U CN218407467 U CN 218407467U CN 202222450748 U CN202222450748 U CN 202222450748U CN 218407467 U CN218407467 U CN 218407467U
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Abstract
The application discloses heating power undercut tunnel arch wall movement joint waterproof construction, including the injection concrete layer, divide into two lining moulds of pouring earlier section and post-pouring section by the pouring order and build the concrete layer, pour earlier the movement joint of reserving between section and the post-pouring section and the waterproof layer of movement joint department, the waterproof layer includes and follows in movement joint department the waterproof layer that is located injection concrete layer and two lining moulds that arrange in proper order in injection concrete layer to the tunnel builds waterproof sheet layer and outer formula rubber waterstop between the concrete layer, fills the chance water inflation rubber strip, outer polyphenyl board, well bury formula rubber waterstop, cohesion benzene board, polymer cement mortar layer and polysulfide rubber layer in the movement joint. This application has the waterproof level of movement joint department multilayer and arranges in proper order, has strengthened waterproof performance's effect.
Description
Technical Field
The application relates to the technical field of tunnel engineering, in particular to a waterproof structure for deformation joint of arch wall of thermal subsurface tunnel.
Background
At present, central heating is an important mode of urban heating, ground space in cities is precious, more and more underground spaces are gradually developed, and a heat tunnel is an underground tunnel specially built for a central heating pipeline. The tunnel structure is because the difference of different stratum surrounding rock nature, the vertical deformation difference of structure often can appear, consequently all sets up the movement joint usually and offsets the poor influence of deformation, just also need carry out leak protection water safeguard to movement joint department when setting up the movement joint.
Deformation joint waterproof construction among the correlation technique sets up one and pastes rubber waterstop outward in the secondary lining outside, and the pre-buried expanded rubber waterstop in lining cutting middle part, nevertheless because the structure load of deformation joint department is inhomogeneous, thereby single rubber waterstop often can receive to drag, not hard up takes place the seepage phenomenon, and water-proof effects is not ideal.
SUMMERY OF THE UTILITY MODEL
In order to improve the easy problem that the seepage that became invalid of movement joint waterproof construction among the correlation technique, this application provides a waterproof structure of heating power undercut tunnel arch wall movement joint.
The application provides a waterproof structure of heating power undercut tunnel arch wall movement joint adopts following technical scheme:
the utility model provides a heating power undercut tunnel arch wall movement joint waterproof construction, includes the injection concrete layer, divide into by the pouring order earlier to water the section and the two lining mould building concrete layer of post-cast section, water the deformation joint of reserving between section and the post-cast section earlier and the waterproof layer of movement joint department, the waterproof layer includes follows in movement joint department the waterproof sheet layer and outer subsides formula rubber waterstop that lie in between injection concrete layer and the two lining mould building concrete layer that arrange in proper order in injection concrete layer to the tunnel, fill the chance water inflation rubber strip, outer polyphenyl board, the formula rubber waterstop of burying, cohesion benzene board, polymer cement mortar layer and polysulfide rubber layer in the movement joint.
Through adopting above-mentioned technical scheme, the deformation joint outside comprises preliminary waterproof barrier with pasting formula rubber waterstop outward by waterproof sheet layer, buries formula rubber waterstop, cohesion benzene board formation and fills waterproof barrier including outer polyphenyl board in, in the deformation joint, meets water inflation rubber strip, polymer cement mortar layer and polysulfide rubber layer formation deformation joint seam mouth shutoff waterproof barrier, and the waterproof performance of deformation joint department has been strengthened greatly to arranging in proper order of multilayer waterproof level to guarantee tunnel normal use.
Optionally, two ends of the middle-buried rubber waterstop are respectively poured inside concrete of a first pouring section and a second pouring section of the two lining formwork concrete layer.
Through adopting above-mentioned technical scheme, the formula rubber waterstop both ends of burying directly pour inside the concrete in, increased the formula rubber waterstop of burying and two lining mould build the connection steadiness on concrete layer in, reduced because the deformation joint department load changes and make the formula rubber waterstop of burying fall the risk of inefficacy in the messenger.
Optionally, after the two lining mold concrete layers are poured, a part of materials of the inner polystyrene board are removed, a groove is formed at a deformation joint close to the inner wall of the tunnel, and the polymer cement mortar layer and the polysulfide rubber layer are filled and embedded into the groove.
By adopting the technical scheme, the polystyrene board is used as a boundary board and is firstly completely filled into the deformation joint, so that the size width of the deformation joint after concrete pouring is ensured; and then removing a part of materials of the inner polystyrene board to form a groove, filling and embedding the polymer cement mortar layer and the polysulfide rubber layer into the groove, plugging the port of the deformation joint, and further enhancing the waterproof performance of the deformation joint.
Optionally, kraft paper for isolation is adhered to one end of the polymer cement mortar layer, which is away from the polystyrene board.
Through adopting above-mentioned technical scheme, the kraft paper material has good anti tearing and waterproof performance, pastes the kraft paper in polymer cement mortar layer one side, plays to cut off the protective effect to the movement joint, plays further additional strengthening to the waterproof performance of movement joint department.
Optionally, the material of the polysulfide rubber layer is set to be two-component polysulfide rubber.
Through adopting above-mentioned technical scheme, two ingredient polysulfide rubber and concrete cohesiveness are good, and self has outstanding waterproof performance, are applicable to the seam sealing of long-term soaking building, and two ingredient polysulfide rubber blocks the port department of movement joint, has effectively strengthened the leak protection ability of having guaranteed the movement joint.
Optionally, the width of the deformation joint is set to be 30mm.
Through adopting above-mentioned technical scheme, the movement joint width sets up to 30mm, has both guaranteed the headspace requirement to each section vertical settlement volume in tunnel, has compromise the effective enforceability that carries out waterproof measure in movement joint department again simultaneously, plays the guard action to the normal rational use in tunnel.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the multi-layer waterproof structure comprises a waterproof plate layer, an externally attached rubber waterstop, a water-swelling rubber strip, an external polystyrene board, a middle embedded rubber waterstop, an internal polystyrene board, a polymer cement mortar layer, a polysulfide rubber layer and the like which are sequentially arranged at a deformation joint from a sprayed concrete layer to a tunnel direction, so that a plurality of waterproof barriers are formed, the waterproof performance at the deformation joint is effectively enhanced, and the normal use of the tunnel is guaranteed;
2. by sticking kraft paper on one side of the polymer cement mortar layer and selecting bi-component polysulfide rubber, the deformation joint is subjected to port plugging by utilizing the excellent waterproof performance of the selected material, and the waterproof effectiveness of the deformation joint is further enhanced.
Drawings
FIG. 1 is a schematic sectional view of a waterproof structure for deformation joints of arch walls of thermal underground tunnel in the embodiment of the application.
Description of reference numerals: 1. spraying a concrete layer; 2. secondly, building a concrete layer in the lining mould; 21. firstly, casting a section; 22. post-pouring section; 3. deformation joints; 4. a waterproof sheet layer; 5. an externally-attached rubber waterstop; 6. a water-swellable rubber strip; 7. an outer polystyrene board; 8. a middle-buried rubber waterstop; 9. a polystyrene board; 10. a polymer cement mortar layer; 101. kraft paper; 11. a polysulfide rubber layer.
Detailed Description
The present application is described in further detail below with reference to fig. 1.
The embodiment of the application discloses heating power undercut tunnel encircles waterproof structure of wall movement joint, refer to fig. 1, build concrete layer 2 including shotcrete layer 1 and two lining moulds, shotcrete layer 1 is tunnel arch wall primary support structure, and two lining moulds build concrete layer 2 and divide into according to pouring the order and water section 21 earlier and water section 22 afterwards, water section 21 earlier and water the gap that section 22 reserved when pouring promptly for movement joint 3 after with, the width of movement joint 3 sets up to 30mm.
At the deformation joint 3 position, waterproof sheet layer 4, outer formula rubber waterstop 5, meet water inflation rubber strip 6, outer polyphenyl board 7, bury formula rubber waterstop 8 in, cohesion benzene board 9, polymer cement mortar layer 10 and polysulfide rubber layer 11 have set gradually from spraying concrete layer 1 to tunnel direction outside-in to strengthen the waterproof performance of deformation joint 3 department.
The waterproof plate layer 4 and the externally attached rubber water stop 5 are positioned outside the two-lining formwork concrete layer 2, one side of the waterproof plate layer 4 is attached to the sprayed concrete layer 1, and the other side of the waterproof plate layer 4 is matched with the externally attached rubber water stop 5; the external rubber waterstop 5 is arranged around the outer side of the deformation joint 3 in the two-lining mould concrete layer 2.
The outer polystyrene board 7 is filled in the deformation joint 3, and the water-swelling rubber strip 6 is positioned at one end of the outer polystyrene board 7 close to the outer sticking type rubber water stop belt 5 to plug the end opening of the deformation joint 3. The buried rubber water stop 8 is arranged inside the two lining mould concrete layers 2 and is positioned at the other end of the outer polystyrene board 7 departing from the water-swelling rubber strip 6. Two ends of the buried rubber waterstop 8 are respectively pre-buried in the early casting section 21 and the late casting section 22 to carry out waterproof separation on the deformation joint 3.
The inner polystyrene board 9 is filled in the deformation joint 3 and is arranged on one side of the buried rubber water stop 8, which is far away from the outer polystyrene board 7. The polymer cement mortar layer 10 is embedded in one end, close to the tunnel, of the polystyrene board 9 in the deformation joint 3, and kraft paper 101 is pasted after the polymer cement mortar layer 10 is dried, so that the waterproof and isolation effects are achieved. The polysulfide rubber layer 11 is located on one side, facing the tunnel, of the polymer cement mortar layer 10, and the polysulfide rubber layer 11 is made of two-component polysulfide rubber and used for plugging ports of the deformation joint 3.
The implementation principle of the embodiment of the application is as follows: when the thermal power underground excavation tunnel is subjected to second-lining construction, a waterproof board layer 4 and an externally-attached rubber water stop belt 5 are arranged on the outer surface of a sprayed concrete layer 1, then construction of a first casting section 21 in a second-lining formwork concrete layer 2 is carried out, then water-swelling rubber strips 6, an outer polystyrene board 7, a middle-embedded rubber water stop belt 8 and a polystyrene board 9 are sequentially arranged, the polystyrene board 9 extends to the inner surface of the tunnel, construction of a later casting section 22 in the second-lining formwork concrete layer 2 is carried out by using the polystyrene board 9 as a boundary board, then a part of the polystyrene board 9 in a deformation joint 3 is removed to form a groove, then a polymer cement mortar layer 10 is filled in the groove, kraft paper 101 is adhered after drying, and finally a polysulfide rubber layer 11 is filled to seal a port of the deformation joint 3. Through setting up the effective waterproof layer of multilayer to strengthen the waterproof performance of movement joint 3 department, ensure tunnel normal use.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (6)
1. The utility model provides a waterproof structure of heating power undercut tunnel arch wall movement joint which characterized in that: including injection concrete layer (1), divide into two lining mould building concrete layer (2) of pouring section (21) and post-cast section (22) earlier by the pouring order, pour deformation joint (3) and the waterproof layer of deformation joint (3) department of reserving between section (21) and post-cast section (22) earlier, the waterproof layer includes in deformation joint (3) department follow spray concrete layer (1) to tunnel in proper order be located spray concrete layer (1) and two lining mould building concrete layer (2) between waterproof sheet layer (4) and outer formula rubber waterstop (5), fill in meeting water inflation rubber strip (6), outer polyphenyl board (7), bury formula rubber waterstop (8), cohesive benzene board (9), polymer cement mortar layer (10) and polysulfide rubber layer (11) in deformation joint (3).
2. The waterproof structure of thermal undercut tunnel arch wall movement joint of claim 1, characterized in that: and two ends of the embedded rubber waterstop (8) are respectively poured inside concrete of the first pouring section (21) and the second pouring section (22) of the two lining formwork concrete layers (2).
3. The waterproof structure of the thermal undercut tunnel arch wall movement joint of claim 1, characterized in that: after the two lining formwork concrete layers (2) are poured, a part of materials are removed from the cohesive polystyrene board (9), a groove is formed in the deformation joint (3) close to the inner wall of the tunnel, and the polymer cement mortar layer (10) and the polysulfide rubber layer (11) are filled and embedded into the groove.
4. The waterproof structure of the thermal underground excavation tunnel arch wall deformation joint according to claim 3, characterized in that: kraft paper (101) for isolation is pasted at one end of the polymer cement mortar layer (10) which is far away from the polystyrene board (9).
5. The waterproof structure of the thermal undercut tunnel arch wall movement joint of claim 1, characterized in that: the material of the polysulfide rubber layer (11) is two-component polysulfide rubber.
6. The waterproof structure of the thermal undercut tunnel arch wall movement joint of claim 1, characterized in that: the width of the deformation joint (3) is set to be 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222450748.4U CN218407467U (en) | 2022-09-15 | 2022-09-15 | Waterproof structure of thermal power undercut tunnel arch wall movement joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222450748.4U CN218407467U (en) | 2022-09-15 | 2022-09-15 | Waterproof structure of thermal power undercut tunnel arch wall movement joint |
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| Publication Number | Publication Date |
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| CN218407467U true CN218407467U (en) | 2023-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222450748.4U Active CN218407467U (en) | 2022-09-15 | 2022-09-15 | Waterproof structure of thermal power undercut tunnel arch wall movement joint |
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| CN (1) | CN218407467U (en) |
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- 2022-09-15 CN CN202222450748.4U patent/CN218407467U/en active Active
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