Method for seepage filtration and drainage of deep sand and gravel layer by using seepage filtration and drainage device

A drainage device and seepage technology, applied in soil protection, construction, infrastructure engineering and other directions, can solve the problems of difficult installation, short installation length of water filter pipes, buried sediments, etc., to achieve convenient labor intensity and long service life. , The effect of good all-round water permeability

Active Publication Date: 2022-07-15
GEZHOUBA GROUP FOUND ENG
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a deep sand and gravel layer seepage filter drainage device and its drainage method, which can solve the problems of short installation length of the existing water filter flowers, difficult installation, and easy occurrence of sediment buried, and realize high-efficiency filtration. drain

Method used

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  • Method for seepage filtration and drainage of deep sand and gravel layer by using seepage filtration and drainage device

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Embodiment 1

[0036] A seepage, filtration and drainage device for a deep sand and gravel layer, comprising an integral water filtering outer pipe formed by connecting a first water filtering flower tube 1 and a second water filtering flower tube 3, the integral water filtering outer tube is arranged in a drainage hole 9, and the drainage hole 9 Drill upward from the top arch 14 of the drainage hole to the elevation of the seepage gradient line in the sand and gravel layer. The first water filter flower tube 1 is located at the upper part of the second water filter flower tube 3 and its diameter is slightly smaller than that of the second water filter flower tube 3. A plurality of water filtering holes 11 are opened on the pipe walls of the water flower tube 1 and the second water filter flower tube 3;

[0037] The bottom end of the integral water filtering outer pipe is communicated with the drainage pipe 10 buried under the top arch 14 of the drainage hole through the tee joint 8, and the ...

Embodiment 2

[0051] A method of utilizing the above-mentioned seepage, filtration and drainage device to carry out seepage, filtration and drainage of deep sand and gravel layers, the method comprising the following steps:

[0052] Step 1: Use a down-the-hole drilling rig to drill a drainage hole 9 with a diameter of 100 mm on the center line of the top arch 14 of the drainage hole, and drill to the final hole at the elevation position of the seepage gradient line in the sand and gravel layer;

[0053] Step 2: Drill a plurality of water filtering holes 11 in the PVC water supply pipe to make the second water filtering flower tube 3, and wrap the water filtering geotextile outside the second water filtering flower tube 3 to form an externally fixed filtering geotextile layer 15;

[0054] Step 3: Cut out the soft permeable pipe 2 with the same length as the depth of the drainage hole 9;

[0055] Step 4: After wrapping the top section of the soft permeable pipe 2 with a water filter geotextil...

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Abstract

A seepage, filtration and drainage device in a deep sand and gravel layer, comprising an integral water filtering outer pipe formed by connecting a first water filtering flower tube and a second water filtering flower tube. The top arch is drilled up to the elevation of the seepage gradient line in the sand and gravel layer. The first water filter flower tube is located on the upper part of the second water filter flower tube and the diameter is slightly smaller than the second water filter flower tube. The first water filter flower tube and the second water filter flower tube There are a plurality of water filtering holes on the wall of the pipe; the bottom end of the integral water filtering outer pipe is connected with the drainage pipe buried under the top arch of the drainage hole through the tee joint, and the integral water filtering outer pipe is fixedly installed on the top arch of the drainage hole. superior. The invention provides a seepage filtration and drainage device for deep sand and gravel layers and a drainage method thereof, which can solve the problems of short installation length, difficult installation and easy burial of sediments in the existing water filtration flower tube, and realize high-efficiency filtration and drainage.

Description

technical field [0001] The invention relates to the field of foundation seepage control of a deep sand and gravel covering layer, in particular to a seepage filtration and drainage device for a deep sand and gravel layer and a drainage method thereof. Background technique [0002] With the development of water conservancy and hydropower undertakings, the development of water conservancy and hydropower projects has gradually expanded to the western plateau and canyon basins, and the conditions for dam building have become more and more complicated, especially for key construction projects under the opportunity of the western development, with high mountains and deep valleys and deep covering layers , Geological conditions are complex. With the continuous deepening of the anti-seepage treatment depth of sand and gravel foundations of water conservancy and hydropower projects in my country, how to do a good job of seepage, filtration and drainage behind the dam under the condit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/10
CPCE02D3/10
Inventor 童耀孟玉成郝永志邬美富陈廷胜童健
Owner GEZHOUBA GROUP FOUND ENG
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