贵州印江岩口滑坡及其综合整治

Feature and Renovation of YanKou Slide in YinJiang Guizhou

岩口滑坡位于贵州省印江县城东４．１ｋｍ。１９９６年９月１８日从印江河左岸高速下滑，阻断印江河，形成高达５０ｍ以上，体积１６８．０８万ｍ３的堆积体和库容达６２５０万ｍ３的堰塞水库。滑床上４２．２２万ｍ３残留体与滑床右侧陡崖壁上残存的４～５万ｍ３危岩体均处于不稳定状态，变形破坏发展迅速。岩口滑坡使６万人的生命和２４亿元财产受到严重威胁。本文介绍该滑坡特征及所采用的开凿导流洞疏排水库积水，对堆积体进行放坡加固，对危岩体进行松动爆破清除，对蠕滑变形的残留体进行截排地表水与抗滑支挡等综合整治工程措施。现在，整治工程已初步达到了预期的减灾抗灾目的。

The Yankou slide located at ahout 4 1 km east of Yinjiang county, Guizhou slided down at high speed from left bank of The Yinjiang River and blocked the river on September 18, 1996 The sliding mass is 50 metres high, the volume 1680800 m 3 The barrier reservoir of 62500000 m 3 was formed The vestigial mass of 422200 m 3 on the sliding bed and the vestigial dangerous rock mass of 24100 m 3 on the steep cliff at the right side with rather unstable condition, and the deformation was developing speedily The life of the 60000 people and the properties of 2 4 billion yuan were being threatened seriously This paper indroduces the engineering measures of renovation on Yankou slide, Which are excavation pilot tunnel for thrust out the water of store up reseroir, strengthening the side slope of piling up mass or slide, clear away dengerous rock mass by detonation of mobilization, and building catchwater and slide resistant pile on vestigial mass of deformation Now the renovation have attained preliminary purpose