【摘要】 简要回顾了基于钻孔进行地应力测量的几种方法,并指出了这些方法自身存在的局限性。提出了一种测定深部岩体地应力的新方法——钻孔局部壁面应力全解除法。该方法的明显优点是,不需要套钻,而且在确定地应力的主值及其方向时也不需要作任何假定。从理论上讲,该方法将不受测量深度的限制,对于深钻孔是普遍适用的,这将为大陆科学钻探计划中深部岩体地应力测量提供一种新途径。更多还原

【Abstract】 Several methods of borehole stress measurement are briefly reviewed. A new goestress measurement method,called local borehole-wall complete stress relief method(LBWCSRM),is proposed in this paper. This method has marked advantages of no need of overcoring and no other assumption when calculating the crust stress tensor. Theoretically,the application of this method is free from the limitation of borehole depth and versatile for any deep boreholes. So it offers an innovative approach to stress measurement at great depths.更多还原