关于深部地应力测量若干改进技术的讨论

Discussion on Some Improved Techniques of In-situ Measurement at Deep Position

地应力是影响地下工程稳定性的重要因素,要获取某一区域精确的地应力资料,必须进行地应力测量。与浅部相比,深部岩体具有"三高一扰动"的特性,其地质条件更为复杂,一些传统的测量技术已不能适应这种复杂环境。通过分析3种常用地应力测量方法在深部测量中面临的问题,结合收集的大量地应力研究资料,对深部地应力测量方法提出了改进技术与措施,以万福煤矿深部地应力测量为例,详细介绍了改进后的水压致裂法测量技术的实际应用情况,并针对今后地下工程呈现的新特点和新问题,分析了地应力测量的发展趋势,提出了个人的看法和意见。

In - situ stress is an important factor influencing the stability of underground engineering. To obtain a regional accu- rate geostress data, insitu stress measurement should be made. Compared with shallow position, the rocks in deep position have the characteristics of ＂ three high and one disturbance＂, suffer more complex geological condition,which makes some traditional geo - stress measurement technology fail. Ac- cording to analyses on the problems facing the three common in -situ measurement methods when they are used deep in -situ stress measurement, combined with a large of research data on in -situ stress, some improved techniques and measures for deep in - situ stress measurement were put forward. Taking the deep in- situ stress measurement in Wanfu coal mine as an example, the practical application of improved hydraulic fracturing method is introduce in detail. In view of new characteristics and problems of underground engineering, the development trend of in -situ stress measurement is analyzed, and some personal opinions are advanced.