Natural river alta-mud sandwich seepage-reducing method

Abstract

A method to carry on natural river reducing infiltrates process using the bentonite directly infiltrates. Take the local original condition fresh loam, the natural sodium base bentonite as reduces infiltrates material. The main step includes: lays down a local loam breaker strip first on the excavating cleaning smooth river bed, then compaction, damages;On loam spread bentonite, above the bentonite spreads local loam in addition. After the two layer, vibrates grinds the compaction, forms reduces infiltrates the level; Finally on reduces infiltrates level to distinguish the gravel material inverted filter and the egg broken stone protector the backfill scene excavates. This invention uses using the natural material, and makes use of local materials primarily, the construction cost is low, the effect is good ,connect natural river course as a whole, both can satisfy the rivers ecology repair to reduce infiltrates guarantees the water request. Not only can maintain the rivers ecosystem the healthy development, but also meets uses in projects, has the remarkable economy, the society and the ecological benefit.

Description

1. Technical field [0001] The invention relates to a method for reducing seepage, in particular to a method for directly using bentonite to reduce seepage in natural rivers. 2. Background technology [0002] The rivers involved here refer to natural rivers with high river bed permeability in arid and water-scarce areas. Affected by global climate change and social and economic development, the shortage of water resources in arid areas has become more serious, and the time and space ranges affected by drought have expanded significantly. , a small number of river water sources are mostly difficult to form water surfaces due to the high permeability of the river bed, and many rivers are often in a dry state. [0003] Rivers are an important part of the natural ecosystem, an important support system for life on earth, providing the basis for the survival and development of animals and plants, and the guarantee of biodiversity, system continuity, and ecological stability in the ...

AI Technical Summary

Problems solved by technology

Although the former two can play a better anti-seepage effect, they have adverse effects on the natural ecosystem of the river, and damage the water phase (river water), soil phase (river bed, river bank), gas phase (contact part above the water surface) and biological phase. The interconnection of plants, animals and microorganisms in and around the river destroys the natural ecosystem of the river, the river loses its self-purification ability, and the deterioration of water quality accelerates; the third option has slightly less impact on the natural ecosystem than the first two, but in Adding a layer of refractory foreign matter in the river course is not in harmony with the natural river course, and the cost is high. At the same time, once it is washed by floods, it may be lifted up in pieces; the seepage prevention of the clay layer has good ecological effects, but the cost is high. In some areas Clay resource shortage

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