CN202866828U - Seepage-proofing structure of hydraulic high pressure, deeply buried and leakage processing of inclined tunnel - Google Patents
Seepage-proofing structure of hydraulic high pressure, deeply buried and leakage processing of inclined tunnel Download PDFInfo
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- CN202866828U CN202866828U CN 201220525760 CN201220525760U CN202866828U CN 202866828 U CN202866828 U CN 202866828U CN 201220525760 CN201220525760 CN 201220525760 CN 201220525760 U CN201220525760 U CN 201220525760U CN 202866828 U CN202866828 U CN 202866828U
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Abstract
The utility model relates to a seepage-proofing structure of hydraulic high pressure, deeply buried and leakage processing of inclined tunnel. And the utility model aims at providing the seepage-proofing structure of hydraulic high pressure, deeply buried and leakage processing of inclined tunnel which is simple in structure and convenient to construct and completely. Solving the leakage problem of the high pressure tunnel, thus leakage damage prevented from happening and the seepage-proofing structure of hydraulic high pressure, deeply buried and leakage processing of inclined tunnel ensures that the tunnel operates safely and permanently. The technical scheme of the seepage-proofing structure of hydraulic high pressure, deeply buried and leakage processing of inclined tunnel is that the seepage-proofing structure of hydraulic high pressure, deeply buried and leakage processing of inclined tunnel comprises the tunnel, wherein a concrete lining is poured on the inner surface of the tunnel. The seepage-proofing structure of hydraulic high pressure, deeply buried and leakage processing of inclined tunnel is characterized in that pipe-shaped steel lining is sleeved in the tunnel, wherein concrete layers are refilled in the reserved gap between the steel lining and the concrete lining. The seepage-proofing structure of hydraulic high pressure, deeply buried and leakage processing of inclined tunnel is suitable for a water resources and hydropower project.
Description
Technical field
The utility model relates to the leakage preventing structure of leakage preventing structure, particularly a kind of water conservancy project high pressure that a kind of tunnel seepage processes, buried, inclination tunnel (vertical shaft, inclined shaft) seepage treatment, mainly is applicable in the Hydraulic and Hydro-Power Engineering.
Background technology
In recent years, China's Hydraulic and Hydro-Power Engineering development is rapid, and large quantities of large, medium and small type power stations are constructed and put into operation successively.For the power station (perhaps pumped storage power plant) of adopting longer tunnel development scheme, because landform, condition of technology and economy, the reasons such as duration, long, large buried depth tunnel is with respect to surface buildingses such as dams, the engineering preliminary stage is difficult to carry out fairly large ground and surveys work, also can't carry out extensive supplementary investigation owing to all condition restriction after the engineering practice of construction, so that adopt the hydropower tunnel of reinforced concrete lining layer pattern behind power generation, to have leakage greatly or the risk of seepage failure, and then affect the normal operation in power station, cause the loss on the economic benefit of power station, also may cause certain social influence.Hinge according to the water delivery electricity generation system is arranged, often needs to arrange that the tunnel (vertical shaft, inclined shaft) of inclination reduces diversion tunnel length in the diversion system, reduces cost.If tunnel seepage occurs in vertical shaft (or inclined shaft) hole section, then with respect to adit, intractability will further strengthen.
Seepage treatment for high pressure, buried, (vertical shaft, the inclined shaft) tunnel that tilts, process seepage if adopt grouting method, because of reasons such as seepage section stratum geological conditions, structural plane proterties, perhaps reasons such as difficulty of construction, construction technology level, grouting agent, consolidation grouting does not often reach expected effect, even reached Expected Results, from satisfying the angle of the permanent service requirement of engineering, this method also is difficult to obtain each side's approval.
Adopt the processing mode of spraying seepage prevention material on the tunnel lining surface, then be not suitable for the outer higher engineering characteristic of hydraulic pressure of buried hydraulic tunnel.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of water conservancy project high pressure of simple in structure, easy construction, buried, leakage preventing structure that the inclination tunnel seepage is processed for the problem of above-mentioned existence, thoroughly solve the leakage problems of heavy-duty pressure tunnel, prevent seepage failure, to guarantee the permanent security of operation of tunnel.
The technical scheme that the utility model adopts is: the leakage preventing structure that water conservancy project high pressure, buried, inclination tunnel seepage are processed, comprise tunnel, its inner surface has been built concrete lining, it is characterized in that: described tunnel inner sleeve tubulose steel lining, backfill has layer of concrete in the space of reserving between this steel lining and the concrete lining.
Gap between described concrete lining and the steel lining external surface is not less than 25cm.
Described steel lining external surface coaxial rings is to arranging one group of stiffening ring.
The height of described stiffening ring is not less than 10cm.
The spacing of adjacent two stiffening rings does not occur in the external pressure situation to be controlled at that stress is overlapping to be as the criterion, and its minimum value is 40cm.
Described steel lining is welded successively by the some sections identical steel pipes of diameter.
Described steel lining adopts Q345R or Q235R steel to make.
The beneficial effects of the utility model are: the utility model is when the water conservancy project high pressure, buried, (vertical shaft tilts, when inclined shaft) having occurred in the tunnel exceeding the seepage of design limiting, be the control leakage, prevent seepage failure, by the tunnel seepage analysis, take the mode of inner sleeve steel lining to carry out seepage treatment to the certain hole section that produces tunnel seepage, and backfill high fluid self dense concrete in the space of between inner sleeve steel lining and concrete lining, reserving, thereby once and for all has solved the problem of high pressure deep-lying tunnel seepage, prevent seepage failure, do not stay future trouble, guaranteed the permanent Operation safety of tunnel.For occuring, remedying equally of seepage failure tunnel corresponding site can adopt said method.
Description of drawings
Fig. 1 is sectional view of the present utility model.
Fig. 2 is the profile of Fig. 1.
Fig. 3 is steel pipe single-sided welding weld groove drawing in the utility model.
Fig. 4 is steel lining transportation scheme of installation in the utility model.
The specific embodiment
As shown in Figure 1 and Figure 2, present embodiment comprises inclination tunnel 1(vertical shaft or inclined shaft, be inclined shaft in this example), it is 50cm that tunnel 1 inner surface has been built this routine thickness of concrete lining 2(), and the tubulose steel lining 3 of inner sleeve coaxial arrangement, one group of stiffening ring 5 of steel lining 3 external surface coaxial arrangement wherein, and wherein part stiffening ring 5 welds with the support system dowel, simultaneously between concrete lining 2 and steel lining 3, reserve construction gap, and good this example of the layer of concrete 4(employing strength grade of backfill self-compacting ability is the concrete of C20).
In the specific implementation process, at first according to the site operation data of early stage, the geologic information of construction period and tunnel concrete liner 2, grouting, fill the draining data and the earth's surface is surveyed etc. in conjunction with tunnel 1, hydraulic tunnel 1 seepage is analyzed, determine inclination tunnel 1 concrete seepage place, and determine the layout scope of inner sleeve steel lining 3 according to the principle of seepage stability.
Secondly, according to aspects such as the calculating of power station transient process, the variation of water delivery electricity generation system damage by water, steel lining 3 installations, welding procedure needs and construction investments, comprehensively determine the caliber of inner sleeve steel lining 3.For reducing as much as possible head loss, reduce the intensity of variation of channel system fringe conditions, the diameter of inner sleeve steel lining 3 should be larger, but for construction and installation need, be convenient to the transportation of steel lining 3, and consider steel lining 3 outer stiffening rings 5 highly, should reserve certain space between inner sleeve steel lining 3 and the concrete lining 2, its minimum value is 25cm, in this example, gap between described concrete lining 2 and steel lining 3 external surfaces is 35cm, and namely the thickness of layer of concrete 4 is 35cm.
Present embodiment is according to the wall thickness of external water pressure and steel lining 3, stiffening ring 5 adopts the arrangement highly low, that spacing is close, the highly general desirable 10cm～15cm of stiffening ring 5, overlapping or the overlapping stress that do not cause of stress of stress does not occur and significantly increases to standard to be controlled in the spacing between adjacent two stiffening rings 5 in the external pressure situation, minimum can be got 40cm～50cm.
Described steel lining 3 is formed by the identical steel pipe of some sections diameters successively continued access, according to present welding procedure level, the steel pipe circular seam that wall thickness 30mm is following, Site Welding adopts single-side welding double-side forming technique or peripheral hardware backing plate technique welding quality can reach requirement, therefore, steel pipe adopts Q345R or the Q235R steel of good welding performance in this example, and adopts single face (inwall of steel pipe) welding manner as shown in Figure 3 to realize that the continued access of steel lining 3 prolongs.
As shown in Figure 4, in the practical application, the transport channel of steel pipe generally is selected in needs to arrange tunnel plug position, steel lining section upstream and downstream, with the former plug demolition blasting of tunnel, utilize former construction to prop up the hole and form transport channel, steel pipe props up in the hole or the construction operations such as unload, stand up in a construction hole and intersection, main hole, skate welding in former construction; Simultaneously, according to the Against Sliding Stability needs of newly-increased inner sleeve steel lining 3 and fill concrete layer 4, carry out surperficial dabbing on concrete lining 2 surfaces of tunnel 1 and process (process range, length are decided according to the Against Sliding Stability needs).Steel pipe is at tunnel 1(inclined shaft) in when transportation, need to be at the default rail 6 of 1 end of tunnel arch, simultaneously at steel pipe welding skate 7, the rail 6 that utilization is complementary and skate 7 carry out steel pipe transmission, then utilize operation platform 8 in the steel pipe realize steel linings 3 location fixing (comprise utilize operation platform 8 steel pipe nozzle hoop construction dowel and and steel-pipe welding fix) and adjacent two steel pipes between welding, backfill high fluid self dense concrete gets final product outside managing at last.
Steel pipe is comparatively convenient at shaft transport, need not weld skate, and directly lifting is fixing gets final product; In addition, the utility model also can be used for the antiseepage processing of water conservancy project high pressure, buried adit.
Claims (7)
1. a water conservancy project high pressure, buried, leakage preventing structure that the inclination tunnel seepage is processed, comprise tunnel (1), its inner surface has been built concrete lining (2), it is characterized in that: described tunnel (1) inner sleeve tubulose steel lining (3), backfill has layer of concrete (4) in the space of reserving between this steel lining and the concrete lining (2).
2. the leakage preventing structure processed of water conservancy project high pressure according to claim 1, buried, inclination tunnel seepage, it is characterized in that: the gap between described concrete lining (2) and steel lining (3) external surface is not less than 25cm.
3. the leakage preventing structure processed of water conservancy project high pressure according to claim 1 and 2, buried, inclination tunnel seepage, it is characterized in that: described steel lining (3) external surface coaxial rings is to arranging one group of stiffening ring (5).
4. the leakage preventing structure processed of water conservancy project high pressure according to claim 3, buried, inclination tunnel seepage, it is characterized in that: the height of described stiffening ring (5) is not less than 10cm.
5. the leakage preventing structure processed of water conservancy project high pressure according to claim 3, buried, inclination tunnel seepage is characterized in that: the spacing of adjacent two stiffening rings (5) does not occur in the external pressure situation to be controlled at that stress is overlapping to be as the criterion, and its minimum value is 40cm.
6. the leakage preventing structure processed of water conservancy project high pressure according to claim 1 and 2, buried, inclination tunnel seepage, it is characterized in that: described steel lining (3) is welded successively by the some sections identical steel pipes of diameter.
7. the leakage preventing structure processed of water conservancy project high pressure according to claim 1 and 2, buried, inclination tunnel seepage, it is characterized in that: described steel lining (3) adopts Q345R or Q235R steel to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220525760 CN202866828U (en) | 2012-10-15 | 2012-10-15 | Seepage-proofing structure of hydraulic high pressure, deeply buried and leakage processing of inclined tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220525760 CN202866828U (en) | 2012-10-15 | 2012-10-15 | Seepage-proofing structure of hydraulic high pressure, deeply buried and leakage processing of inclined tunnel |
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| Publication Number | Publication Date |
|---|---|
| CN202866828U true CN202866828U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220525760 Expired - Lifetime CN202866828U (en) | 2012-10-15 | 2012-10-15 | Seepage-proofing structure of hydraulic high pressure, deeply buried and leakage processing of inclined tunnel |
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| CN (1) | CN202866828U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257318A (en) * | 2015-10-22 | 2016-01-20 | 上海交通大学 | Safety protection method for tunnel structural deformation caused by lining local leakage |
| CN111697481A (en) * | 2020-06-30 | 2020-09-22 | 上海宝冶集团有限公司 | Manufacturing and using method of cable well |
-
2012
- 2012-10-15 CN CN 201220525760 patent/CN202866828U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257318A (en) * | 2015-10-22 | 2016-01-20 | 上海交通大学 | Safety protection method for tunnel structural deformation caused by lining local leakage |
| CN111697481A (en) * | 2020-06-30 | 2020-09-22 | 上海宝冶集团有限公司 | Manufacturing and using method of cable well |
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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 |
Granted publication date: 20130410 |
|
| CX01 | Expiry of patent term |