清江隔河岩水库杨家槽滑坡稳定性工程地质研究

杨家槽滑坡现已成为一个现代化的新型城镇，基建费用已花掉数千万元，在滑体上居民上千人。新镇址是未经正规地质勘察而定下来的，后经清江地质大队勘测认定为滑坡时，地方政府和市民极为关注。为安定民心，长江水利委员会清江地质大队进行滑坡治理前的地质详勘工作。经过一年多的详查勘探与科学研究，基本查清了滑坡形成的年代（２．２－２．４万年前）、形成机制、滑坡的物质组成与结构以及滑带的特性等，并在滑体内发现一个规模较

STUDY OF STABILITY OF YANGJIACAO SLIDE MASS IN THE GEHEYAN RESERVOIR ON QINGJIANG RIVER

A modern newly built town is found to be located on an old slide mass after the resettlement.The local government and the residents are much concerned about the stability of the town.So a detailed geological investigation has been carried out.The slide is dated as being of an age of 22 000-24 000a B P.An analysis of the sliding mechanism the canstitution and structure of the slide mass and the properties of the sliding zones brings to light that the old slide mass will be stable over a considerably long time.Moreover, a large cave system was revealed in the slide mass with on underground river which empties into the Qingjiang river forming a natural underground drainage conducive to reducing a landslide.Some countermeasures are suggested to be immediately taken to ease the anxiety of the local people to resume their normal life.