摘要
在澜沧江小湾水电站拱坝建基面进行了5个钻孔的基岩钻孔弹模测试,以评价开挖爆破对岩体的松弛效应与卸荷深度。扼要介绍了钻孔弹模测试原理及测试结果,估计了卸荷松弛深度,并与单孔声波监测结果进行了对比分析。
Borehole elasticity modulus measurements were conducted in five holes drilled from the excavated rock foundation surface of Xiaowan Hydropower Station＇s arch dam, situated on Lancang River, in order to evaluate the unloading relaxation depth due to excavation blasting. The principle of borehole elasticity modulus measurement and results are presented, and the unloading relaxation depth is estimated. The depth is compared with that obtained by single-hole sonic velocity monitoring.
出处
《长江科学院院报》
CSCD
北大核心
2006年第4期44-46,共3页
Journal of Changjiang River Scientific Research Institute
关键词
坝基
岩体
卸荷带
钻孔弹模
波速
dam foundation
rock mass
unloading zone
borehole elasticity modulus
wave velocity
