The in-situ stress measurement by hydrofracturing method in hydraulic engineering is expounded. In order to obtain scientific and objective test records, and to further analyze the test results, the relation and regularity between geostress respectively with wave velocity in rock mass, seepage flow velocity, and V-shape valley are analyzed on the basis of test diagrams in many practical engineering examples. The recorded stress is closely related with flow velocity during the test. Geostress distribution and direction are affected by tunnel diameter, size and characteristics of the V-shape valley. Moreover, in a macro sense, the geostress value have certain regularity with wave velocity. Last, some issues in the hydrofracturing test method are discussed.
Key words
hydrofracturing method /
stress distribution /
V-shape valley /
wave velocity /
questions and discussion
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1] 刘允芳. 水压致裂法三维地应力测量[J].岩石力学与工程学报,1991,10(3):246-256.(LIU Yun-fang. In-situ 3-dimensional Stress Measurements by Hydraulic Fracturing Technique[J]. Chinese Journal of Rock Mechanics and Engineering,1991,10(3):246-256.(in Chinese))
[2] 彭 华,马秀敏, 姜景捷, 等. 赵楼煤矿1 000 m深孔水压致裂地应力测量及其应力场研究[J]. 岩石力学与工程学报,2011,30(8): 1638-1645.(PENG Hua, MA Xiu-min, JIANG Jing-jie, et al. Research on Stress Field and Hydraulic Fracturing In-situ Stress Measurement of 1000m Deep Hole in Zhaolou Coal Mine[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 30(8): 1638-1645.(in Chinese))
[3] 何满潮,谢和平,彭苏萍,等.深部开采岩体力学研究[J]. 岩石力学与工程学报,2005,24(16):2803-2813.(HE Man-chao, XIE He-ping, PENG Su-ping, et al. Study on Rock Mechanics in Deep Mining Engineering[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(16):2803-2813.(in Chinese))
[4] 蔡美峰.地应力测量原理和方法的评述[J]. 岩石力学与工程学报,1993,12(3):275-283.(CAI Mei-feng. Commentary of Principle and Techniques of Rock Stress Measurement[J]. Chinese Journal of Rock Mechanics and Engineering, 1993, 12(3):275-283.(in Chinese))
[5] 朱焕春,陶振宇,黄德凡,等.河谷走向与河谷地应力分布[J].岩石力学与工程学报,1995,14(1):17-24.(ZHU Huan-chun, TAO Zhen-yu, HUANG De-fan, et al. Influence of the Trend on Rock Stress in Valley[J]. Chinese Journal of Rock Mechanics and Engineering, 1995, 14(1):17-24.(in Chinese))
[6] 刘允芳,刘 鸣.水压致裂法地应力测量破裂准则的探讨[J].长江科学院院报,1995,12(2):36-43.(LIU Yun-fang, LIU Ming. Study on Breaking Criterion of Geostress Measurement by Hydraulic Fracturing Technique[J]. Journal of Yangtze River Scientific Research Institute, 1995, 12(2):36-43.(in Chinese))
[7] 刘允芳.在同一钻孔中水压致裂法地应力测量与套钻孔应力解除法测量成果的比较[J].地震研究,1995,18(1):80-85.(LIU Yun-fang. A Comparison between the Two Results of Geostress Measure by Hydrofracturing and Stress Relief Methods in the Same Borehole[J]. Journal of Seismological Research,1995,18(1):80-85.(in Chinese))
[8] 刘允芳,刘元坤.水压致裂法地应力测量若干问题的探讨[J].地震研究,1999,22(3):265-272.(LIU Yun-fang, LIU Yuan-kun. Approach to Some Questions of Geostress Measurement with Hydrofracturing Technique[J] Journal of Seismological Research,1999,22(3):265-272.(in Chinese))
PDF(1660 KB)
