赣江石虎塘航电枢纽工程万合导排渠淤泥开挖浅析

Introduction of the silt excavation of Wanhe guide and drainage canal of Shihutang Navigation-power Project in Ganjiang River

江西省赣江石虎塘航电枢纽工程万合导排渠大部分渠段位于赣江老河道,沿线地质情况复杂,地下水位高,采用常规机械开挖难以施工,后改用绞吸式挖泥船疏浚施工不仅速度快,而且避免了在恶劣条件下对开挖面及边坡的防护问题,从而大大缩短了工期,充分体现了在特殊的条件下绞吸式挖泥船疏浚施工的优越性.

The major part of Wanhe guide and drainage canal of Shihutang navigation-power project is at the old channel of Ganjiang River.Owing to the complex geological conditions and high underground water level,the conventinal mechanical excavation method is difficult to adopt.In dredgin construction,using cutter-suction dredger is not only faster,but also can avoid the protection problems of excaration surface and slope in harsh condition.Thus,it can greatly shorten the construction period and save investment.The superiority of cutter-suction dredger construction is fully embodied under special conditions.