Biological check dam used for erosion gully control and construction method

Abstract

A biological check dam used for erosion gully control comprises check dams which are arranged at different sections. The biological check dam is characterized in that aspen inserting trunks are planted at the upper end of each check dam and the lower end of each check dam to be used as frameworks, the inserting trunks are woven together and fixed through twigs of chaste trees to form protective faces, detritus or earth stone is stuffed between the protective face at the upper end and the protective face at the lower end, and the stuffing height is 45-55cm; a fixed net which is formed by twigs of chaste trees in a staggered weaving mode is paved on a stuffing base material in the check dam, the two ends of the fixed net are fixed on the inserting trunks through iron wires, and therefore the stability of the check dam is enhanced. The biological check dam is reasonable in structure, strong in stability and water permeability, simple in construction technology, low in manufacturing cost and strong in adaptability to terrain and environment conditions, has the advantages of both the biological measure and the engineering measure, makes up the defects of the two measures, is an effective control measure combining the engineering measure and the biological measure, integrates green and ecology, has obvious advantages in controlling gully water and soil loss, improving the erosion base level and preventing and controlling gully bottom sapping and gully shore expansion, and is applicable to erosion gully control of mountainous areas. Besides, local materials can be used for constructing the biological check dam.

Description

technical field [0001] The invention relates to the field of water and soil loss gully erosion control, in particular to a biological valley for erosion ditch control. Background technique [0002] Today, soil erosion has become an important factor restricting the sustainable development of human economy and society. Gully erosion is one of the main types of soil erosion, and it is also the most serious form of erosion that causes soil erosion. The continuous development of gully erosion has caused the decline of soil fertility. The area decreased, and the grain output decreased. Therefore, controlling gully erosion has become an important part of soil and water conservation. At present, the main water and soil conservation measures used for gully erosion control are grain mills. The main types of grain mills include dry stone mills, masonry stone mills, soil mills, and plant mills. The masonry stone valley square requires a lot of investment, and it is extremely inconveni...

AI Technical Summary

Problems solved by technology

The masonry stone valley square has a large investment, and the drainage channel layout is extremely inconvenient during construction, and the commonly used trapezoidal and rectangular overflow outlets have no obvious practical effect

The ditch banks on both sides of the dry masonry stone valley square are severely scoured, and the top is easily damaged. Although the investment is small, it is not easy to manage

The anti-erosion ability of Tugufang is poor. Under the condition of heavy rain, due to the large kinetic energy of runoff and the limited flood control capacity of Gufang, damage occurs

The protection effect is not ideal, the investment is large, the ecological benefit is low, and the requirements for ditch management and improvement of the ecological environment cannot be met

There are planting willow valley workshop and willow valley workshop, which are easy to obtain materials, small investment, and good water permeability, but the stability is worse than that of stone masonry valley workshop.

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