Measurement of In-situ Stress in Ningdong Mine Area and In-situ Stress Distribution Law

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Cao, Yang^1 ; Ji, Hongguang^1

School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing

100083, China^1

关键词: Confining pressure test;    Distribution law;    Horizontal stress;    In-situ stress field;    In-situ stress measurement;    Maximum principal stress;    Measurement technologies;    Principal stress;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/2/022165/pdf
DOI  :  10.1088/1755-1315/170/2/022165

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to acquire the in-situ stress state and its distribution law in Ningdong mine area, in-situ stress measurement tests were conducted respectively in the coal mine of Zao Quan mine, Yang Changwan mine and Mei Hua mine. 3D in-situ stress states of five test points in three levels were obtained by using 3D stress reliving measurement technology and hollow inclusion strain gages combined with experiments of the rock core confining pressure test. The general distribution state and characteristics of in-situ stress field in Ning Dong mine area can be concluded as follow: Horizontal stress field acts as the main part, the direction of principal stress is horizontal basically the direction of the maximum principal stress N50.3 E in average. In-situ stress value in mine area increases linearly with the mining depth, and establish the model of in-situ stress of mine area.