为解决我国西南地区采煤塌陷地造成水田塌陷破坏问题,恢复塌陷地水田隔水层的持水能力,重构土壤水田隔水层,利用探地雷达和高密度电法2种手段进行现场探测,并结合地域特点,调查水田塌陷地的破坏特点,总结西南地区采煤塌陷地水田破坏形式及漏水特征,并分析了其漏水机理。结果表明:西南地区采煤塌陷导致地下水位下降、地表裂缝生成等;塌陷区水田的破坏形式主要有塌陷田、漏水田、裂缝田3种。通过现场调查和探测认为采煤塌陷影响了水田隔水层的保水作用是导致塌陷地水田漏水的主要原因。

In order to solve the paddy field subsidence and failure caused by the coal mining subsidence in the southwest part of China, to recovery the water holdi ng capacity of the water insolated stratum for the paddy fields in the mining subsidence area and to reconstruct the water insolated stratum in the soil, ground radar and high density electric method were applied to the site exploration.In combination with the regional features, the failure features of the paddy field subsidence area were i nvestigated.The paddy field failure way and the water leakage features of the paddy field in the mining subsidence of Southwest China were summarized.The water lea kage mechanism was analyzed.The results showed that the mining subsidence in Southwest China would cause the underground water dropping, the surface ground cr acking and others.The paddy field failures in the mining subsidence area would have the subsidence field, water leakage field and land cracking field.The site investigat ion and the exploration held the coal mining subsidence affected to the water keeping function of the paddy field insolated stratum would be the main reason to cause t he paddy field water leakage in the subsidence area.

国土资源部公益性行业科研专项基金资助项目(200911015-04)；