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岩体初始地应力问题的研究在岩石力学与工程领域具有重要意义.作为地质体组成部分的岩体与其他材料明显不同之处之一就是其内部赋存有地应力状态,了解地壳某一局部区域地质岩体残余至今的地应力状态是一项极为复杂而又十分重要的研究课题.对地壳应力状态的认识虽然总体上有一些规律可寻,但主要手段还是靠现场原位的地应力实测.简要评述了目前普遍采用的三维地应力测量方法及其不足.提出了钻孔局部壁面应力解除法(BWSRM)三维地应力测量原理及其具体实施方案,研制了基于BWSRM法为原理的地应力测井机器人,并将其初步应用于锦屏二级水电站工地埋深达2430m处的地应力实测工作,验证了BWSRM法地应力测量原理的可行性和合理性.BWSRM法与测井机器人在地应力测井工作中的推广和应用具有十分广阔的前景.
The study on the initial stress of rock mass is of great significance in the field of rock mechanics and engineering.One of the obvious differences between the rock mass and the other materials that is part of the geologic body is the existence of in-situ stress state, The geostress status of the regional geological rock mass so far is an extremely complex and very important research topic.Although the general state of the crustal stress state can be found some laws can be found, but the main method is to measure the geostress in situ This paper briefly reviews the commonly used three - dimensional geostress measurement methods and their shortcomings.A three - dimensional geostress measurement principle of BWSRM and its specific implementation are proposed, and the ground stress based on BWSRM method is developed Logging robot, and its preliminary application in Jinping second-level hydropower station buried depth of 2430m of the ground stress measurement work to verify BWSRM method of geostress measurement principle is feasible and reasonable.BWSRM method and logging robot in the ground Stress logging work in the promotion and application of a very broad prospects.