Ecological protecting method for low liquid limit powdery clay side slope

Abstract

The invention discloses an ecological protecting method for a low liquid limit powdery clay side slope and relates to the technical field of protection of the low liquid limit powdery clay side slope. The method comprises: trimming a side slope; covering the side slope with a base material layer; sowing a seed layer; covering the seed layer with a non-woven fabric; carrying out maintenance; removing the non-woven fabric and the like. The base material layer contains low liquid limit powdery clay digging soil generated by building a road, straw fiber which is subjected to compost treatment in advance, indigenous plant seeds, farm manure, a composite fertilizer, super-absorbent resin and polyacrylamide; the seed layer comprises indigenous plant seeds; the raw materials are wide in source and low in cost, the method is simple in construction process, good in side slope protecting effect and suitable for being applied to ecological protection of the low liquid limit powdery clay side slope formed by projects such as traffic, construction, municipal administration, water conservancy and the like in a large area.

Description

technical field [0001] The invention belongs to the technical field of slope ecological protection, and in particular relates to an ecological protection method for low liquid limit silty clay slopes. Background technique [0002] In recent years, China's expressways have developed rapidly, but the massive construction of expressways has also caused enormous pressure and damage to the ecological environment. Building an ecological slope can not only increase the stability of the slope, reduce soil erosion, control slope runoff, but also protect and restore the ecological environment of the slope and its surroundings, so it has good economic, social and ecological benefits. One of the main development directions of slope protection in the future. [0003] At present, common slope ecological protection methods mainly include three-dimensional vegetation net protection technology, guest soil spraying protection technology, thick-layer substrate protection technology, geocell e...

AI Technical Summary

Problems solved by technology

However, the existing technologies have the following defects: ① Most of them require special construction equipment, have high requirements for the sprayed base material, the process is relatively complicated, the construction cost is high, and the investment in road slope protection is relatively small. It is not easy to widely popularize; ②The planted plants are mostly herbs and shrubs commonly used in urban greening, with single species and low diversity, and it is difficult to form natural plant communities, and the ecosystem is fragile; ③In semi-arid low-liquid limit silty clay slope areas, Due to poor soil, low organic matter content, poor water retention, drought and little rain, plant growth is limited, resulting in poor protection effect

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