CN202851009U - Tunnel buffering multilayer waterproof-drainage structure - Google Patents
Tunnel buffering multilayer waterproof-drainage structure Download PDFInfo
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- CN202851009U CN202851009U CN 201220525744 CN201220525744U CN202851009U CN 202851009 U CN202851009 U CN 202851009U CN 201220525744 CN201220525744 CN 201220525744 CN 201220525744 U CN201220525744 U CN 201220525744U CN 202851009 U CN202851009 U CN 202851009U
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- waterproof
- layer
- drainage
- secondary support
- tunnel
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Abstract
The utility model belongs to the waterproof and drainage technology of construction tunnels, particularly relates to a tunnel buffering multilayer waterproof-drainage structure, and further relates to a construction method of tunnel buffering multilayer waterproof and drainage. The tunnel buffering multilayer waterproof-drainage structure comprises a surrounding rock, an initial support and a secondary support. A buffering multilayer waterproof and drainage layer is arranged between the initial support and the secondary support. The buffering multilayer waterproof and drainage layer comprises a non-woven geotechnical cloth layer, a high density polyethylene waterproof layer and a rubber plate layer in sequence along the direction from the initial support to the secondary support. A composite viscosity waterproof layer is formed by a high density polyethylene plate and a rubber plate, and the composite viscosity waterproof layer and the secondary support are in cementation. After secondary support construction, cracks caused by dry shrinkage of concrete or deformation of the surrounding rock are allowed. If only flaws do not occur on the secondary support within the cracking range of the composite viscosity waterproof layer, leakage can not occur. Therefore waterproof performance is improved. Compared with a traditional waterproof layer, the problems that permeability happens between the waterproof layer and the secondary support, the waterproof layer is integrally damaged and the leakage is caused by the cracks of the secondary support can not happen.
Description
Technical field
The utility model belongs to the anti-water discharge technology of construction tunnel, is specifically related to a kind of tunnel buffering multilayer waterproof/drainage structure, and the utility model also relates to the anti-drainage and construction method of tunnel buffering multilayer.
Background technology
The method for tunnel construction of at present extensive use is New Austrian Tunneling Method.New Austrian Tunneling Method is under the prerequisite of the carrying usefulness of utilizing country rock itself to have, carry out full-face excavation, and build the barrel in tunnel to form two-layer lining cutting inside and outside the combined type, namely take pneumatically placed concrete, anchor pole, steel mesh reinforcement and steel support etc. as outer support form, be called first flexible support, tie up to the support work that must carry out immediately after the tunnel cutting.When surrouding rock deformation tends towards stability, carry out the supporting second time and back cover, i.e. nonvolatil supporting (or the complement jet concrete, or encircle in the fluid concrete), play the effect that improves degree of safety and the enhancing of whole support capacity, be called secondary supporting.Waterproofing course is set to stop country rock Groundwater infiltration tunnel between initial support and secondary supporting, simultaneously, can prevents that the secondary mould from annotating concrete because the crack that restraint stress produces.Waterproofing course has single waterproofing course and complex waterproof layer.There are many problems in the New Austrian Tunneling Method constructing tunnel the waterproof father and mother, mainly is: the width of (1) splash guard is smaller, general 1-2m, and the connected mode between splash guard is difficult to obtain assurance; Welding process requirement is high, and overlap joint welding waste is serious, uneconomical mutually; (2) since the impact on solder technology and irregular excavation surface easily splash guard is crashed through when secondary lining performs, thereby reduced the waterproof ability of splash guard.
The utility model content
Occur between waterproofing course that prior art exists and secondary supporting in order to solve that infiltration, waterproofing course are whole to be destroyed and seepage technical problem that the secondary supporting crack causes.The purpose of this utility model is to provide a kind of tunnel buffering multilayer waterproof/drainage structure; Another purpose of the present utility model is to provide a kind of tunnel buffering multilayer anti-drainage and construction method.
A kind of tunnel buffering multilayer waterproof/drainage structure comprises country rock, initial support and secondary supporting, it is characterized in that: be provided with the anti-drainage blanket of buffering multilayer between initial support and the secondary supporting; The anti-drainage blanket of buffering multilayer comprises non-woven geotextile layer, high density polyethylene (HDPE) waterproofing course and rubber flaggy successively from initial support to secondary supporting direction.
The anti-drainage and construction method of a kind of tunnel buffering multilayer, carry out in the steps below:
At first, steel mesh reinforcement, anchor pole, steel bracket are installed, sprayed mortar forms the preliminary bracing system, guarantees the initial support surfacing; Sprayed mortar should adopt fast hardening concrete;
Then, adopt and to paste or the method for screw anchoring, lay at initial support that thickness is installed is that the non-woven geotextile of 2.6-3.2mm is as the buffering drainage blanket;
Geotextiles can be got rid of the underground water of infiltrate preliminary bracing pneumatically placed concrete layer under the saturation state, can hold moisture under unsaturated state, thereby alleviates the hydrostatic pressure to secondary lining;
Secondly, lay the high density polyethylene (HDPE) plate at cushion coat, then paste rubber tile at the high density polyethylene (HDPE) plate; High density polyethylene (HDPE) plate and rubber tile form compound viscosity waterproofing course; Adjacent compound viscosity waterproofing course overlaps mutually; Specific practice is: with nail plastic disc is hammered into the initial support spray-up and fix, then with the hot weld method compound viscosity waterproofing course is fixed on the plastic disc, then with two weld seams adjacent compound viscosity waterproofing course is coupled together;
At last, carry out the secondary supporting construction.
The beneficial effects of the utility model are: compound viscosity waterproofing course and secondary supporting bonding say that more relevantly rubber tile and secondary supporting concrete have effective adhesive; Like this, can allow after the secondary supporting construction because the crack that concrete shrinkage or surrouding rock deformation produce, even compound viscosity waterproofing course breaks, owing to the globality of supporting and compound viscosity waterproofing course so that seepage is only relevant with the water body of failure position; Therefore, crackle does not appear in the secondary supporting as long as compound viscosity waterproofing course breaks in the scope, just seepage can not occur, thereby improve water resistance.The utility model is compared with the conventional waterproof layer, the seepage that infiltration between waterproofing course and secondary supporting, the whole destruction of waterproofing course and secondary supporting crack cause can not occur.
Description of drawings
Fig. 1 is the schematic diagram of tunnel of the present utility model buffering multilayer waterproof/drainage structure;
Fig. 2 is the structural representation of the anti-drainage blanket of buffering multilayer.
Among the figure: 1-initial support, the anti-drainage blanket of 2-buffering multilayer, 3-secondary supporting, 4-country rock, 201
-non-woven geotextile layer, 202-high density polyethylene (HDPE) waterproofing course, 203-rubber flaggy.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
Product embodiments is as shown in Figure 1: a kind of tunnel buffering multilayer waterproof/drainage structure, comprise country rock 4, initial support 1 and secondary supporting 3, and be provided with the buffering multilayer between initial support 1 and the secondary supporting 3 and prevent drainage blanket 2; Referring to Fig. 2, the anti-drainage blanket 2 of buffering multilayer comprises non-woven geotextile layer 201, high density polyethylene (HDPE) waterproofing course 202 and rubber flaggy 203 successively from initial support to secondary supporting direction.
High density polyethylene (HDPE) waterproofing course 202 usefulness high density polyethylene (HDPE) plates are laid; Rubber flaggy 203 usefulness isoprene rubbers or natural rubber are laid.
The anti-drainage and construction method of a kind of tunnel of embodiment of the method buffering multilayer, carry out in the steps below:
At first, steel mesh reinforcement, anchor pole, steel bracket are installed, sprayed mortar forms the preliminary bracing system, guarantees the initial support surfacing; Sprayed mortar should adopt fast hardening concrete;
Then, adopt and to paste or the method for screw anchoring, lay at initial support that thickness is installed is that the non-woven geotextile of 2.6-3.2mm is as the buffering drainage blanket;
Secondly, lay the high density polyethylene (HDPE) plate at cushion coat, then paste rubber tile at the high density polyethylene (HDPE) plate; High density polyethylene (HDPE) plate and rubber tile form compound viscosity waterproofing course; Adjacent compound viscosity waterproofing course overlaps mutually; Specific practice is: with nail plastic disc is hammered into the initial support spray-up and fix, then with the hot weld method compound viscosity waterproofing course is fixed on the plastic disc, then with two weld seams adjacent compound viscosity waterproofing course is coupled together;
At last, carry out the secondary supporting construction.
Claims (2)
1. a tunnel buffering multilayer waterproof/drainage structure comprises country rock, initial support and secondary supporting, it is characterized in that: be provided with the anti-drainage blanket of buffering multilayer between initial support and the secondary supporting; The anti-drainage blanket of buffering multilayer comprises non-woven geotextile layer, high density polyethylene (HDPE) waterproofing course and rubber flaggy successively from initial support to secondary supporting direction.
2. a kind of tunnel as claimed in claim 1 cushions the multilayer waterproof/drainage structure, and it is characterized in that: the high density polyethylene (HDPE) waterproofing course is the high density polyethylene (HDPE) plate; The rubber flaggy is isoprene rubber or natural rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220525744 CN202851009U (en) | 2012-10-15 | 2012-10-15 | Tunnel buffering multilayer waterproof-drainage structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220525744 CN202851009U (en) | 2012-10-15 | 2012-10-15 | Tunnel buffering multilayer waterproof-drainage structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851009U true CN202851009U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220525744 Expired - Fee Related CN202851009U (en) | 2012-10-15 | 2012-10-15 | Tunnel buffering multilayer waterproof-drainage structure |
Country Status (1)
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| CN (1) | CN202851009U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852530A (en) * | 2012-10-15 | 2013-01-02 | 中铁二十一局集团有限公司 | Tunnel buffering multilayered water-discharging-preventing structure and construction method |
| CN104265323A (en) * | 2014-07-24 | 2015-01-07 | 中南大学 | Buffer yielding support structure of weak large-deformation rheological rock mass large-section tunnel |
| CN104879164A (en) * | 2015-03-12 | 2015-09-02 | 西南交通大学 | Tunnel annular drain structure |
| CN106437753A (en) * | 2016-12-02 | 2017-02-22 | 河北工程大学 | Tunnel supporting structure |
| CN106368717B (en) * | 2016-12-01 | 2018-10-19 | 河北工程大学 | A kind of tunnel anti-collapse supporting construction |
| CN110130982A (en) * | 2019-07-02 | 2019-08-16 | 济南市坤鹏技术开发中心 | A kind of traffic tunnel building safety construction method |
-
2012
- 2012-10-15 CN CN 201220525744 patent/CN202851009U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852530A (en) * | 2012-10-15 | 2013-01-02 | 中铁二十一局集团有限公司 | Tunnel buffering multilayered water-discharging-preventing structure and construction method |
| CN104265323A (en) * | 2014-07-24 | 2015-01-07 | 中南大学 | Buffer yielding support structure of weak large-deformation rheological rock mass large-section tunnel |
| CN104879164A (en) * | 2015-03-12 | 2015-09-02 | 西南交通大学 | Tunnel annular drain structure |
| CN104879164B (en) * | 2015-03-12 | 2018-04-13 | 西南交通大学 | A kind of tunnel circle draining structure |
| CN106368717B (en) * | 2016-12-01 | 2018-10-19 | 河北工程大学 | A kind of tunnel anti-collapse supporting construction |
| CN106437753A (en) * | 2016-12-02 | 2017-02-22 | 河北工程大学 | Tunnel supporting structure |
| CN110130982A (en) * | 2019-07-02 | 2019-08-16 | 济南市坤鹏技术开发中心 | A kind of traffic tunnel building safety construction method |
| CN110130982B (en) * | 2019-07-02 | 2020-07-10 | 中国铁建投资集团有限公司 | Tunnel safety construction 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: 20130403 Termination date: 20201015 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |