正断层形成及其对水平应力影响的探究与应用
苗青旺
（山西潞安集团蒲县伊田煤业有限公司，山西 蒲县 041204）
摘要： 为解决伊田煤业1106 工作面内赋存多条断层影响工作面回采的情况，采用理论计算和数值模拟的办法对正断
层形成机理及水平应力影响进行研究，得出断层形成后最小主应力与最大主应力的比值增大到2.05耀2.38 倍，并且在断层
落差一定的情况下，断层倾角与地应力影响范围呈负相关。将伊田煤业揭露断层的特征代入理论计算中可得，断层附近
垂直应力与水平应力集中区的范围在6耀28 m。结合伊田煤业地质特点及研究结果，提出工作面推进过程中应注意的情
况，从而为其他工作面过断层提供可借鉴的经验。
关键词： 正断层；水平应力；垂直应力；断层影响
中图分类号： TD323     文献标识码： A     文章编号： 2095-0802-(2021)07-0019-03
Research and Application of Normal Fault Formation and Its Influence on Horizontal Stress
MIAO Qingwang
(Puxian Yitian Coal Industry Co., Ltd., Lu'an Group of Shanxi, Puxian 041204, Shanxi, China)
Abstract: In order to solve the problem that there are many faults in 1106 working face of Yitian Coal Industry Co., Ltd., which
affect the mining of working face, through theoretical calculation and numerical simulation, this paper studied the formation
mechanism of normal faults and the influence on horizontal stress. It was concluded that the ratio of the minimum principal stress
to the maximum principal stress increases to 2.05-2.38 times after the fault was formed, and there was a negative correlation
between the fault dip angle and the influence range of in -situ stress when the fault fall was certain. By substituting the
characteristics of the faults revealed by Yitian Coal Industry Co., Ltd. into the theoretical calculation, it could be concluded that
the range of vertical stress and horizontal stress concentration area near the fault was 6-28 m. Combined with the geological
characteristics and research results of Yitian Coal Industry Co., Ltd., it put forward the situation that should be paid attention to in
the process of advancing the working face, so as to provide reference experience for other working faces to cross faults.

Key words: normal fault; horizontal stress; vertical stress; fault influence