摘要
针对常规土石坝观测孔施工中存在的众多问题，提出了利用风动潜孔锤进行跟套管干孔取芯的方法，经工程实践证明，效果较好。
A coring method from dry hole by pneumatic submerged borehole hammer is put forward to overcome some difficulties in conventional earth-rock dam observation construction. Works practice indicates that the effect of this method is good. It can be generalized in similar project.
出处
《东北水利水电》
1999年第6期24-26,共3页
Water Resources & Hydropower of Northeast China
关键词
土石坝
观测孔
成孔方法
earth-rock dam observation hole making hole method
