摘要
阐述了水压致裂地应力测试方法在水电工程中应用状况。为了获得科学、客观的测试记录,进一步综合分析水压致裂法测试成果,结合众多工程实例图形,有针对性地分析了水压致裂法地应力测试过程中岩体波速、渗透流速、"V"型谷等与地应力的相关关系及规律性。测试记录的应力与测试过程中流速的控制有着很大的相关性;地应力量值分布及方向受洞径、"V"型谷的大小和特征所影响;测点地应力值的大小与波速的高低在宏观上有着一定的规律性。同时也对水压致裂法测试中若干问题提出探讨,为水压致裂法地应力测试在水电工程中的应用提供参考。
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.
出处
《长江科学院院报》
CSCD
北大核心
2013年第11期77-82,共6页
Journal of Changjiang River Scientific Research Institute
关键词
水压致裂法
地应力分布
"V"型谷
波速
问题及探讨
hydrofracturing method
stress distribution
V-shape valley
wave velocity
questions and discussion
