【摘要】 介绍了在地下洞室不同方向的钻孔中，采用水力劈裂技术进行的原位地应力测量。结合广西全州天湖水电站，广州抽水蓄能电站和广西龙滩水电站的实测结果，分析研究了地下洞室围岩应力的分布状态及影响围岩应力分布的主要因素。更多还原

【Abstract】 This paper discussed in-situ stress measurements in boreholes of different directions around underground tunnel by hydraulic fracturing technique. Combining the measurements carried out at Tianhu andLongtan hydropower stations, and Guangzhou pumped storage power station, we analysed the distributionstate of stress in tunnel surrounding rock, and the main factors affecting the stress distribution in Surrounding rock.更多还原