All-lining debris flow draining and guiding groove with roughened groove bottom and application thereof

Abstract

The invention discloses an all-lining debris flow draining and guiding groove with a roughened groove bottom and an application thereof. The draining and guiding groove comprises an all-lining bottom plate of the draining and guiding groove and side walls of the draining and guiding groove which are arranged at two sides. A plurality of roughened belts with a certain width and convex height are arranged above the bottom plate of the draining and guiding groove. The roughened belts transversely penetrate along the draining and guiding groove, are connected with the bottom plate of the draining and guiding groove and are distributed at a certain interval. A plurality of roughened bodies with different convex heights are distributed at random to constitute the roughened belts. The top surface of the roughened belts is uneven. Compared with the prior art, the draining and guiding groove provided by the invention fully utilizes the characteristic that the roughened belts can improve the roughness coefficient of the draining and guiding groove to reduce the flow speed of debris flow and then the abrasion kinetic energy of debris flow. Thus, the safety of the draining and guiding groove is greatly improved, the project maintenance cost is greatly lowered and the draining and guiding groove can well adapt to large-gradient longitudinal slopes of valleys. Compared with traditional draining and guiding grooves, the project operating maintenance cost can be saved by 50-80% by adding 2-5% of project investment and the project safety is greatly improved.

Description

technical field

[0001] The invention relates to a mud-rock flow prevention technology, in particular to a fully-lined mud-rock flow drainage channel with a rough bottom and its application in the case of a valley with a large gradient. Background technique

[0002] Debris flow disaster is one of the main types of geological disasters in my country. With the development of the mountainous area economy and the deepening of the western development, the demand for debris flow engineering is becoming more and more vigorous. The fully lined debris flow drainage channel is a common engineering measure for debris flow engineering. Will be heavily applied.

[0003] Due to its much higher bulk density than water, debris flow has a special fluid structure containing clastic soil, so the movement of debris flow shows the characteristics of high inertia, strong transport force, huge impact force, strong abrasive force, etc. The bottom of the lining-type debris flow drainage channel is ...

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