CN2450265Y

CN2450265Y - Pneumatic hose water stopping device

Info

Publication number: CN2450265Y
Application number: CN 00237954
Authority: CN
Inventors: 段少俊; 陈煌承
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-17
Filing date: 2000-08-17
Publication date: 2001-09-26
Anticipated expiration: 2010-08-17

Abstract

The utility model discloses a pneumatic hose water stopping device, which is suitable for the water stopping treatment of expansion joints for reinforcing a large dam of a water conservancy and hydropower project and prevents leakage of the large dam. The utility model is composed of a rubber tube and an air nozzle. When the rubber tubes are installed in specified boreholes of the expansion joints for reinforcing the large dam, the compressed air injected through the air nozzle makes the rubber tube expanded to prevent the leaked water in the expansion joints of reinforcing a large dam from passing through to achieve the purpose of stopping the water.

Description

The zone of pressure antipriming

The utility model relates to a kind of antipriming, particularly a kind of zone of pressure antipriming.The sealing that is applicable to the concrete dam shrinkage joint of Hydraulic and Hydro-Power Engineering is handled, and prevents seepage.

Concrete dam in the Hydraulic and Hydro-Power Engineering is the most basic and one of most important building, its function is the barrage retaining, raises head, and the reservoir of formation has effects such as generating, flood control, irrigation, breed, therefore, the security performance of concrete dam has important status.

The quality of concrete dam and volume are very huge, and dam is subjected to effects such as self gravitation, hydraulic thrust and thermal stresses in the running, and differential settlement and distortion take place easily, thereby cause the crack and form seepage and damage, and jeopardize dam safety.

The crack and the seepage that cause for the differential settlement that solves the concrete dam and distortion are damaged, present technology is that the concrete dam is carried out segment processing, that is: the concrete dam is built up plurality of sections (being called monolith), each monolith 15-20 rice, make to form a shrinkage joint (or claiming structural joint) between the monolith, eliminate the influence of differential settlement dam safety.Twice metallic water stop sheet and asphalt well vertically are set in the shrinkage joint, reach the purpose (seeing figure one) that prevents seepage.But metallic water stop sheet breaks in construction and in service often the existence inevitably, and the factor affecting such as also can wear out very soon of the pitch in the asphalt well is damaged the water-stopping system globality.Therefore, after the water in the reservoir leaks into dam body by the shrinkage joint, corrode the concrete dam on the one hand, it is aging to accelerate the concrete dam, shortens the application life of concrete dam; Seepage in the reservoir also can cause that to dam body the uplift pressure of dam body raises simultaneously indirectly on the other hand, has reduced the safety and stability performance of concrete dam, can cause the big dam failure of concrete when serious, jeopardizes the safety of Hydraulic and Hydro-Power Engineering and downstream people's lives and properties.

Task of the present utility model is the antipriming that a kind of improved concrete dam shrinkage joint will be provided, and it can reach the stagnant water effect at concrete dam shrinkage joint easily.

Task of the present utility model is finished as follows: between vertical asphalt well at shrinkage joint and sealing sheet the position bore one with dark hole such as asphalt well, place rubber tube in the hole, the injection pressure air, rubber tube is expanded, tightly be attached to boring around, reach the purpose that stops concrete dam shrinkage joint sealing.In operation maintenance, make regular check on the air pressure in the rubber tube, if rubber tube internal pressure air leaks, use pulsometer to inflate to rubber tube, make and remain normal pressure in the rubber tube.The utility model is easy to use, and installation and maintenance is simple, is not subjected to the influence of the normal operation of dam.When the example structure that will describe in detail below adopting, the cost of zone of pressure antipriming is littler than the cost of asphalt well, and operation and maintenance cost is littler.

Below with reference to accompanying drawing the utility model is described in further detail.

Fig. 1 is the existing antipriming layout plan of concrete dam;

Fig. 2 is a layout plan of the present utility model;

Fig. 3 is the structure chart of the utility model zone of pressure.

With reference to Fig. 1, (1) is the concrete dam body, and (2) are concrete dam body shrinkage joint, and (3) are upstream side sealing sheets, and (4) are asphalt wells, and (5) are downstream sealing sheets.Its operating principle is, storehouse water carries out the first road sealing by shrinkage joint upstream side sealing sheet (3), percolating water after the infiltration (3) passes through asphalt well (4) again and carries out the second road sealing, percolating water behind the infiltration asphalt well (4) passes through sealing sheet (5) again and carries out sealing, by three road sealings, to reach the purpose of shrinkage joint sealing.The major measure of its antiseepage relies on the second road asphalt well to carry out sealing.Pitch closely is filled in the shrinkage joint after meeting heat fusing, reaches stagnant water effect, in case after the ageing of asphalt, can not melt, and lose the sealing effect.

With reference to Fig. 2, (1) is the concrete dam body, and (2) are concrete dam body shrinkage joint, and (3) are upstream side sealing sheets, and (4) are asphalt wells, and (5) are boring, and (6) are zone of pressures, and (7) are downstream sealing sheets.The operating principle of its sealing is that storehouse water is successively by upstream, shrinkage joint sealing sheet (3) with behind the asphalt well that has worn out, enter the 3rd road zone of pressure antipriming, after percolating water enters boring (5), because zone of pressure (6) under high pressure expands, be attached to tightly on the hole wall of boring (5), stop passing through of percolating water, reached stagnant water effect.

With reference to Fig. 3, (1) is valve, and (2) are zone of pressures.Valve (1) is the general automatic sealed valve of general doughnut, and zone of pressure (2) is a kind of rubber strip of special use.Its operating principle is to pass through valve (1) to zone of pressure (2) filling pressure air with air compressor, makes its air pressure reach set-point and gets final product.During inspection is afterwards safeguarded, make regular check on air pressure in the zone of pressure (2) with a hand-held air gauge by valve (1), if the air pressure in the zone of pressure (2) is lower than set-point,, make it reach the pressure of set-point by valve (1) pressure air of in zone of pressure (2), annotating.

The utility model Pneumatic hose water stopping device has simple in structure, and construction and installation are shadow not Ring the normal operation of dam, easy to maintenance, the characteristics such as operating cost is cheap can be extensive Be used for the sealing system at Hydraulic and Hydro-Power Engineering dam expansion joint and built dam expansion joint drop The aging transformation of blue or green well takes stopgap measures and effects a permanent cure, and improves the stagnant water effect at dam expansion joint.

Claims

1, a kind of zone of pressure antipriming, form by zone of pressure (6) and valve (1), it is characterized in that zone of pressure (6) is installed in the specific boring (5) in concrete dam shrinkage joint, by valve (1) injecting compressed air, zone of pressure (6) is expanded, tightly be attached on the hole wall of boring (5), percolating water passes through in the prevention concrete dam shrinkage joint.

2, according to the antipriming of claim 1 regulation, it is characterized in that the bottom sealing of zone of pressure (6), the valve (1) of closing automatically is equipped with at the top.