爆炸方法在水下软基处理中的应用

爆炸方法对围堰底部软基进行处理,目的是提高软基的承载力。设计内容主要包括单个药包设计和药包布设,当软基深度8~12 m时,单个药包重量取11.54 kg,药包间距取4 m。结果表明,经过多次爆破,沉降量与时间曲线的变化十分显著,随着爆炸次数的增多,单个药包引起的沉降量趋于减小;随着距堤头距离的增大,沉降量逐渐增加,堤根处的堆石体趋于稳定。

Application of Explosive Method on Underwater Soft Foundation Handle

The aim of handle cofferdam using explosive method impmves the bearing capability of soft foundation.The main work are the design of single explosive charge and its arrangement.When depth of soft foundation is 8～12 m,the single charge is 11.54 kg,and its space is 4 m.The results show that after several blasts,the change of the curve of settlement with time is apparent;with the incresement of the blasts,the amount of subside induced by single charge tend to reduction;with the increase of the distance to the dike of shore,the subside quantity increased, and the stone body which is in dike of shore tends to stability.