Risk assessment of rock burst in middle deep mines within the northern Ordos basin based on sedimentary controlling theory

被引：0
|
作者：
Ding X. [1 ,2 ]
Yan X. [1 ,2 ]
Li Z. [1 ,2 ]
Pu Z. [1 ,2 ]
Huang H. [1 ,2 ]
Liu X. [1 ,2 ]
Ji Z. [1 ,2 ]
Zhang Y. [2 ,3 ]
机构：
[1] China Coal Energy Research Institute Co.，Ltd., Xi′an
[2] China CoalＲock Burst ＆ Water Hazard Control Center, Ordos
[3] School of Mechanics and Engineering, Liaoning Technical University, Fuxin
来源：
Journal of Mining and Strata Control Engineering | 2023年 / 5卷 / 04期
关键词：
middle deep mines; Ordos basin; risk zoning; rock burst; sedimentary geology;
D O I：
10.13532/j.jmsce.cn10-1638/td.20230424.001
中图分类号：
学科分类号：
摘要：
To unravel the matter of rock burst ordinarily round-faced by deep coal seam mining within the northern Ordos basin，supported the study of sedimentary geological characteristics of coal seam overburden，the correlation between the planar distribution pattern of microseismic energy events and its correlation with the sedimentary geological environment，the thickness of the main key layer，spacing between main key layer and coal seam，the thickness of coal seam associate core rate of rock layer was analyzed by taking M coal mine as an example，the results showed that the sedimentary geological condition area unit vital factors affecting the microseismic energy events. The grey correlation degree technique was used to rank the influence degree of the 5 main controlling factors affecting the impact risk，and the weight value of each factor was determined by the analytic hierarchy process. The thematic map of the main controlling factors were established on the ArcGIS platform to construct the impact ground pressure risk evaluation model，which was used to evaluate the impact risk of the mine by sectionalization，and was compared with the actual observation data of microseismic energy events throughout the working face. The results showed that the sectionalization analysis results area unit in smart agreement with the actual observation results，which proved the correctness of the impact hazard analysis results of rock burst based on the analysis of sedimentary geological conditions. It provided a new reference technique for the prevention and controlling of mine impact pressure. © 2023 Power System Technology Press. All rights reserved.
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