Study on floor failure characteristics of working face passing anticlinal section based on micro-seismic monitoring
LI Xiaoer
YANG Bo
ZHANG Liangliang
HAI Xiaoyun
LU Gang
MIAO Wei
ZHOU Jinyan
HAN Lei
Abstract：In order to explore the floor failure characteristics of the passing anticline section of the working face,taking the 16091 working face of Zhaogu No.1 mine as an example,the passing anticline section and the normal mining section are divided according to the actual geological conditions of the working face and the field microseismic monitoring data,and the distribution characterist-ics of microseismic events of the passing anticline section and the normal mining section are compared and analyzed.The failure characteristics of the floor of the working face passing anticline section under the microseismic angle are revealed.Then the failure law of coal mining floor under anticlinal structure is revealed by similar simulation test.The results show that the anticlinal axis of B1 is a region of high energy core density when the working face passes through the anticlinal section;the failure depth of the floor in the early and late anticlinal sections of the working face is 1.12 and 1.08 times that of the normal mining section,respectively,and the failure boundary of the floor touches the interior of L8 limestone.In the process of coal mining on deep confined water body,the tectonic stress in the passing anticlinal section has a significant effect on the instability failure of floor.
Keywords：anticline structuremicro-seismic monitoringfloor damageconfined watermine water disaterswater inrush
Publication Date：2025-02-19
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 137-145 )