长江科学院院报2017，Vol.34Issue(12)：63-67,72,6.DOI:10.11988/ckyyb.20160806
裂隙较发育岩体的地应力测量与研究
Measurement and Research on In-situ Stress of Jointed and Fractured Rock Mass
摘要
Abstract
In order to address the difficulty and low success rate of conventional stress detection methods applied to jointed and fractured rock mass,we found that the method of strain relieving in the bottom of borehole is applicable and we employed this method to the columnar jointed rock mass of the dam foundation of a hydropower station.Through this method,we obtained the plane stress of the jointed rock mass and the three-dimensional stress state from three boreholes in different directions.The stress results transformed to the borehole coordinate system were close to the test results of single borehole stress,verifying the calculation results.In conclusion,the method of strain relieving in the bottom of borehole could be well applied to the stress measurement of fractured rock mass such as columnar joints.关键词
水电站/节理岩体/地应力/孔底应变解除法/三维应力状态Key words
hydropower station/jointed rock mass/in-situ stress/borehole bottom strain relieving method/three-dimensional stress state分类
建筑与水利引用本文复制引用
刘元坤,石安池,韩晓玉,许静..裂隙较发育岩体的地应力测量与研究[J].长江科学院院报,2017,34(12):63-67,72,6.基金项目
国家自然科学基金项目(51579016) （51579016）
国家重点研发计划项目(2016YFC0401801,2016YFC0401803) （2016YFC0401801,2016YFC0401803）
中央级公益性科研院所基本科研业务费项目(CKSF2015040/YT,CKSF2017037/YT) （CKSF2015040/YT,CKSF2017037/YT）
