Abstract：The method to obtain the rock mass mechanical parameters is critically important in geotechnical engineering. Thus in-situ test technology is basically employed to overcome the defects of disturbance and size effect in laboratory tests when determining mechanical parameters of rock mass. Recently，the borehole shear test(BST) is used extensively in soil direct shear tests，but the application for rock mass is rarely reported. Since the rock borehole shear test(RBST) equipment was introduced by China Institute of Water Resources and Hydropower Research in 2009，some in-situ test results have been obtained in geotechnical engineering sites. To overcome defects of RBST in engineering application，the technology of in-situ borehole test is improved. And the rock borehole shear-compress test equipment has been developed. By the new test system，the mechanical and deformation parameters of rock mass can be obtained simultaneously，which will provide a new way for determining the rock mass mechanical parameters in geotechnical engineering.
田中达吉，船户明雄. 钻孔孔内剪切试验的原位置岩盘强度评价[C]// 第六届岩石力学国内论坛演讲论文集. 日本，京都：[s. n.]，1984：165-172. (TANAKA Dagestan，FUNABE Akio. The evaluation of Rock shear strength by using rock borehole shear test[C]// The Proceedings of the Sixth National Rock Mechanics Conference. Jingdu，Japan：[s. n.]，1984：165-172.(in Chinese))
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中国水电顾问集团中南勘测设计研究院. 向家坝水电站二期工程坝基工程地质条件复核评价专题报告[R]. 长沙：中国水电顾问集团中南勘测设计研究院，2009.(HydroChina Zhongnan Engineering Corporation. The report of the evaluation on the geological conditions in the second-phase Xiangjiaba Hydropower Station dam foundation[R]. Changsha：HydroChina Zhongnan Engineering Corporation，2009.(in Chinese))
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中国水利水电科学研究院. 向家坝水电站坝基岩体抗剪强度参数的钻孔剪切试验方法研究报告[R]. 北京：中国水利水电科学研究院，2010.(China Institute of Water Resources and Hydropower Research. The research report of rock bore shear test in the Xiangjiaba Hydropower Station dam foundation[R]. Beijing：China Institute of Water Resources and Hydropower Research，2010.(in Chinese))
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2013, Vol. 32 
