In-trench water-stone separation siphoning-drainage debris flow control method

A water-rock separation and debris flow technology, which is applied in water conservancy projects, river regulation, water conservancy engineering equipment, etc., can solve the problems of inability to prevent debris flow disasters in time, and the utility time is long, so as to improve drainage efficiency, simple construction and low engineering cost. Effect

Active Publication Date: 2012-07-04
ZHEJIANG UNIV
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Problems solved by technology

Biological measures are characterized by low investment and the ability to improve the natural environment, but they take a long time to work and cannot prevent debris flow disasters in time

Method used

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  • In-trench water-stone separation siphoning-drainage debris flow control method

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Embodiment Construction

[0014] The principle of the present invention is: aiming at the physical characteristics of the solid-liquid two-phase fluid of the debris flow, a permeable pipe is arranged in the formation area of ​​the debris flow or in the valley of the circulation area to separate the water from the rock, and a siphon drainage pipe is connected downstream of the permeable pipe to separate the debris flow in the ditch. The flood water is discharged into the downstream safety ditch to reduce the hydrodynamic conditions of the debris flow ditch and prevent the occurrence of debris flow disasters.

[0015] The method for preventing and controlling debris flow by siphon drainage of water and stone separation in the ditch of the present invention includes the following steps in specific implementation:

[0016] (1) Investigate and analyze the hydrogeological and engineering geological conditions of the debris flow ditch, and determine the formation area 1, circulation area 2 and accumulation are...

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Abstract

The invention discloses an in-trench water-stone separation siphoning-drainage debris flow control method. A series of permeable pipes are disposed in a trench in an area for formation or passage of debris flow, and drain siphons are connected to downstream ends of the permeable pipes. When the water level of rain flood reaches the siphoning level, water permeating into the permeable pipes is drained to the downstream safety trench through the drain siphons so that dynamic strength of the water in the trench is reduced. Using the method can effectively control formation and passage of debris flow and solve treatment methods for debris flow trenches on different scales, and control engineering is simple in construction and high in adaptability. Gravity flow is converted into full in-pipe flow under the action of siphoning drainage, and drainage efficiency is improved. Pipe sedimentation can be prevented under the suction action of siphoning. Diverted drainage in the case of high water level has low impact on the hydrological environment of the trench.

Description

technical field [0001] The invention relates to a technical method for preventing and controlling mud-rock flow, in particular to a method for preventing mud-rock flow by separating water from rocks in a ditch and siphon drainage to avoid the formation and development of valley-type mud-rock flow. Background technique [0002] Debris flow is a special torrent in which water entrains a large amount of solid matter such as mud, sand, stones, etc. It erupts suddenly, is ferocious, has strong destructive power, and often causes heavy losses of life and property. The basic conditions for the formation of debris flow can be attributed to: abundant water source, abundant loose solid matter, favorable watershed shape and longitudinal slope of gully bed. Among the causes of debris flows, hydrodynamic conditions are variable environmental factors, while loose solid matter and watershed conditions are relatively fixed factors. During the formation of the debris flow, the torrent will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B1/00E02B3/02
Inventor 孙红月尚岳全于洋支墨墨蔡岳良朱汉华
Owner ZHEJIANG UNIV
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