我县山溪头水库照谷社型坝因出现外坝坡鼓凸变形,要求用槽挖方式对坝下游小山包进行地质勘探,以便为大坝加固设计提供依据。考虑到采用2~#岩石炸药进行爆破,可能会产生危及大坝安全的震害。为安全计,我们在学习外地经验的基础上,进行了“近人”爆破试验,获得了成功,并较好地完成了予定任务。而后又为瑞安县大南水库拱坝坝肩的槽挖工作 Because of the bulging deformation of the outer dam, the Shaguitou dam of Shaxitou reservoir in our county needs to carry out the geological exploration on the downstream of the dam by means of slotted dig so as to provide the basis for the dam reinforcement design. Taking into account the use of 2 # rock explosives for blasting, may endanger the safety of dam damage. As a safety measure, we conducted “near-human” blasting tests on the basis of learning field experiences, obtained success, and accomplished the given tasks well. Later, it worked as a trenching work for dam abutment of Dainan Reservoir in Ruian County