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Underground cavern drainage blind ditch device

A technology of drainage blind ditch and underground cavern, which is applied in construction and infrastructure engineering, etc., can solve the problems that plastic blind ditch cannot be in good contact with seepage rock wall, installation and operation of plastic blind ditch is inconvenient, and the joint position is not easy to fix, etc. Achieve good drainage effect, reliable construction quality and good bonding effect

Active Publication Date: 2015-06-10
SINOHYDRO BUREAU 14 CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the drainage blind ditch of underground caverns for water conservancy and hydropower uses plastic blind ditch, which cannot be in good contact with the seepage rock wall, and the position of the joint is not easy to fix, making it difficult to achieve a good drainage effect; in addition, the installation and operation of plastic blind ditch is inconvenient

Method used

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  • Underground cavern drainage blind ditch device
  • Underground cavern drainage blind ditch device
  • Underground cavern drainage blind ditch device

Examples

Experimental program
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Effect test

Embodiment 1

[0020] For underground caverns with a diameter of less than 6m, the construction method of the rubber drainage blind ditch is to open several small circular holes on the wall of a circular rubber pipe 2 with a wall thickness of 1cm and a circular section with an outer diameter of 5cm. Hole 1, the diameter of the round holes on the pipe wall is 2 cm, the distance between the round holes is 4 cm, and there are 4 rows in total. The round holes are arranged in a plum-shaped pattern along the length of the pipe wall. The outer wall of the rubber tube 2 and the three-way or four-way rubber tube connector is wrapped with a water-filtering geotextile 5 and a water-impervious geotextile 4. One side of the geotextile is away from the permeable rock wall. Fix the rubber tube wrapped in geotextile on the rock surface with a stainless steel fixing card, install an Ω-shaped fixing card 6 every 20-40cm, and nail the two ends of the fixing card on the rock surface with a nail 8. After the co...

Embodiment 2

[0022] For underground caverns with a diameter ≥ 6m, the construction method of the rubber drainage blind ditch: open several trapezoidal rubber pipes on the wall of the trapezoidal rubber pipe 3 with a wall thickness of 1cm, a trapezoidal section with an upper bottom length of 5cm, a lower bottom length of 15cm, and a height of 8cm. Circular small hole 1, the diameter of the circular small hole is 3cm, a row of round holes is arranged on the upper bottom side pipe wall with a hole distance of 8cm, and three rows of round holes are arranged on the lower bottom side pipe wall with a row distance of 4cm and a hole distance of 8cm. Two rows of round holes are arranged on each side pipe wall, the row distance is 4cm, and the hole distance is 8cm. The round holes on the pipe wall of the rubber pipe with trapezoidal section are arranged in a rectangular shape along the length direction of the pipe wall. The outer wall of the rubber tube 2 and the three-way or four-way rubber tube con...

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Abstract

The invention relates to an underground cavern drainage blind ditch device and a construction method. A plurality of circular small holes are arranged on the wall of a rubber tube, and are arranged in a plum blossom mode or rectangularly along the length direction of the wall of the rubber tube; water filtering geotextile and waterproof geotextile wrap the outer wall of a joint of the rubber tube and a three-way or four-way rubber tube, one side, which is wrapped by the water filtering geotextile, of the rubber tube clings to a water seeping rock wall, and the other side, which is wrapped by the waterproof geotextile, of the rubber rube is far away from the water seeping rock wall; the rubber tube wrapped with the geotextile is fixed on a rock surface by stainless steel fixing clamps; the fixing clamps are mounted at intervals ranging from 20cm to 40cm; and two ends of each fixing clamp are nailed on the rock surface by drive pins. Construction is convenient, efficiency is high, construction procedures of a rubber drainage blind ditch are few, construction quality is reliable, a drainage effect is good, and the rubber tube has certain flexibility and can be laid along a water seeping belt of the rock wall closely. Seeped water can be ensured to be drained into an appointed drainage open ditch or a water-collecting well along the rubber drainage blind ditch.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and in particular relates to an underground cavern drainage blind ditch device. Background technique [0002] At present, the drainage blind ditch of the underground caverns of water conservancy and hydropower uses plastic blind ditch, which cannot be in good contact with the seepage rock wall, and the position of the joint is not easy to fix, making it difficult to achieve a good drainage effect; in addition, the installation and operation of plastic blind ditch is inconvenient. Contents of the invention [0003] The present invention overcomes the shortcomings of using plastic blind ditch in existing underground cavern drainage blind ditch, and provides a low-cost, convenient installation, and reliable construction quality drainage blind ditch material, so as to improve construction efficiency, reduce construction cost, and guarantee Drainage effect of und...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/20
Inventor 刘六艺范开平王来所张述毕张宝忠杨立峰王晓莉黎晓开陈香荣杨睿李彦林王勤
Owner SINOHYDRO BUREAU 14 CO LTD