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Box body lining type mudslide discharging and guiding groove and application and construction method thereof

A technology for trough drainage and debris flow, which is applied in botany equipment and methods, water conservancy projects, artificial waterways, etc., can solve problems such as high maintenance costs, failure to use normally, and damage to the bottom of trough drainage, so as to reduce maintenance in the later period The cost, the post-maintenance cost reduction, and the effect of saving the construction period

Active Publication Date: 2013-11-13
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the deficiencies of the prior art, and to solve the situation that the strong abrasion and scouring action of the debris flow often causes serious damage to the bottom of the drainage channel, cannot be used normally, and the maintenance cost is high in the later period when the vertical gradient of the trench bed is large. Provide a box-lined debris flow drainage channel with high safety, low maintenance cost, beneficial to the ecological restoration of the channel, and suitable for large trench bed vertical slope debris flow and its construction method

Method used

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  • Box body lining type mudslide discharging and guiding groove and application and construction method thereof
  • Box body lining type mudslide discharging and guiding groove and application and construction method thereof
  • Box body lining type mudslide discharging and guiding groove and application and construction method thereof

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Embodiment 1

[0032] like figure 1 , figure 2 , image 3 , Figure 4 shown. The drainage area of ​​a debris flow ditch is 1.5km 2 , in order to control debris flow disasters, it is planned to set up 5 Gufang, 2 sand dams and 400m drainage channels in the middle of the basin. For the row guide groove, the following construction methods are adopted:

[0033] The first step is to plan and design a debris flow drainage channel with a width of 5.0m at the bottom of the channel and a vertical gradient i of 0.50 according to the situation of the debris flow channel. Since the vertical slope i≥0.15 of the row of guide grooves, it is planned to adopt the box-lined debris flow drainage groove of the present invention. The box-lined debris flow drainage channel includes the bottom of the drainage channel and the side walls 3 of the drainage channel on both sides. There are several levels of energy-dissipating sills distributed in steps in between, and each level of energy-dissipating sills is ...

Embodiment 2

[0042] like figure 1 , figure 2 , image 3 , Figure 4 shown. The same as Embodiment 1 will not be repeated, the difference is: for the debris flow ditch drainage area 5.6km 2 , it is planned to set up 12 valley squares, 6 sand retaining dams and 800m drainage channels in the middle of the basin. For the row guide groove, the following construction methods are adopted:

[0043] The first step is to plan and design a debris flow drainage channel with a bottom width of 7.5m and a vertical gradient i of 0.15 according to the conditions of the debris flow ditch.

[0044] According to the vertical gradient i of the trench bed at the bottom of the trench, the parameters of rib sill 2 are planned: the distance L between the upstream and downstream rib sill 2 is 20m, the foundation depth H of rib sill 2 is 2.5m, and the width B of rib sill 2 along the longitudinal slope is 2.0 m; rib sill 2 is a reinforced concrete structure with a reinforcement ratio of 0.5%; the top 0.1m of r...

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Abstract

A debris flow drainage and guide canal with a lined box body comprises a drainage and guide canal bottom and drainage and guide canal side walls (3) on two sides thereof. The drainage and guide canal bottom comprises a transverse penetrating-type rib sill (2) and several levels of energy-dissipating sills fitted between upstream and downstream rib sills (2) and distributed in a ladder-like manner. Each level of the energy-dissipating sill is formed by several prefabricated rectangular boxes (1) made of reinforced concrete and connected along the direction transversely running through the drainage and guide canal. The top side of the rectangular box (1) is open, and the other five sides are closed. The rectangular box (1) is filled with soil. The debris flow drainage and guide canal is safer, and reduces later maintenance costs. Also provided are an application and a construction method of the debris flow drainage and guide canal.

Description

technical field [0001] The invention relates to a mud-rock flow prevention technology, in particular to a box-lined mud-rock flow drainage guide groove suitable for a large ditch bed vertical gradient and a construction method thereof. Background technique [0002] Debris flow disaster is one of the main types of geological disasters in my country. With the development of the mountainous economy and the deepening of the western development, the demand for debris flow control is becoming more and more vigorous. As one of the main types of debris flow prevention and control engineering, drainage channels are widely used in debris flow control. [0003] After the Wenchuan Earthquake, a large number of landslides provided a rich source of solid matter for the formation of debris flows, and a large number of debris flows in ultra-small watersheds and slope debris flows occurred. The vertical gradient of this type of debris flow is very large, generally exceeding 0.15. Even up t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B5/00E02B5/02E02B5/08A01G9/02
CPCE02B5/02E02B8/06
Inventor 陈晓清游勇李德基崔鹏杨东旭
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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