The technology and applied research of in-site stress testing

摘要

With the increasing of mining depth, high ground stress causes a increased risk of large deformed instability of the deep roadway surrounding rock.The accurate ground stress test is one of the key to analyze the ground stress characteristics of surrounding roadway in deep mine, the disturbance of surrounding rock after excavation, and coal safety production.Therefore, it is vital to choosing a reasonable and effective measurement method of the ground stress for measuring in actual production.This paper is based on the stress measurement development process of inquiry, contrasts and analyzes of several existing ground stress measurement methods.As the same time, it comes up with the several basic principles, advantages,disadvantages and applications of the different methods.What's more, the paper describes the issues relating to stress measurement developing trends in the future and the stress measurements' problems what we are likely face.The research finding has important reference and significance to select reasonable ground stress measuring methods and to improve the ground stress measuring accuracy.