Soft foundation overflow dam laminating and permeation-stop technology

Abstract

The invention relates to a soft foundation overflow dam, in particular to a soft foundation overflow dam laminating and permeation-stop technology, which is applicable to water conservancy project flood protection, water conservancy project plastic spreading and permeation-stop construction, and soft foundation road engineering roadbed permeation-stop, and belongs to the technical field of water conservancy facilities. According to the technology, a plastic film is inserted under a natural soil matrix, and cutoff water directly flows into the soil matrix within a certain depth range under the overflow dam, so that the moisture content of the soil matrix is reduced, and the bearing capacity of the soil matrix is improved; and a layer of reinforcement geotextile (with water permeability) is spread on the plastic film, and a 20cm gravel bed is wrapped, so that the moisture of the soil matrix upwards returns to the grave bed when a load is transmitted to the soil matrix from a ground, and flows out from a downstream side, the soil matrix is protected from being soaked by the moisture for a long time, the water filtration of the grave bed is realized, the solidification of the soil matrix is accelerated, and the strength of the soil matrix is improved.

Description

technical field [0001] The invention relates to a soft foundation overflow dam, in particular to a film-covered seepage interception technology for a soft foundation overflow dam, which is suitable for flood control of water conservancy projects, plastic-paved seepage interception construction of water conservancy projects, and seepage interception of soft foundation road engineering subgrades. Technical field of water conservancy engineering facilities. Background technique [0002] In the construction of water conservancy projects, in some natural rivers, lakes, ponds, ponds, low-lying wetlands and other areas, as well as in some rivers with large slopes, many very long dams to block rivers or surround lakes are often built due to the need for water storage. However, due to flood control needs, overflow dam sections for flood discharge have been built in some special locations. The function of the overflow dam is to maintain the upstream reservoir water at a certain water...

AI Technical Summary

Problems solved by technology

However, the condition of wet subgrade and low bearing capacity has not been solved, which is the root cause of the phenomenon of "frequently broken and often repaired" to "frequently repaired and often broken" on the overflow dam crest

This also makes some places build the dam crest much higher than the design, which seriously affects the flood discharge capacity and endangers the safety of the downstream. It still cannot solve the current situation of the short service life of the dam crest road.

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