摘要
为研究松散层下开采次生小断层对工作面涌砂的影响,以山东省横河煤矿1931W工作面突砂事故为例,采用ANSYS有限元数值模拟方法,分析次生小断层对采动裂隙带高度发育的影响,根据模拟结果及流砂突出事故,对顶板流砂突出的机制和条件进行研究,得出在煤层开采过程中导水裂隙带受断层影响的一般规律,认为工作面推进过程中存在断层情况下,导水裂隙带最大发育高度和破坏程度会受到影响,导致其发育高度增大,引发涌水突砂事故。
In order to study the influence of secondary faults on working face sand inrush under alluvium,this paper,taking the 1931 W working face sand inrush accident of Henghe Coal Mine in Shandong Province as an example,discussed the effect of secondary faults on the development of fractured zone in roof by ANSYS finite element numerical simulation.Based on the simulation results and the occurrence of sand inrush accident,the roof quicksand inrush mechanism and conditions were studied and the general influencing law of fault on the water flowing fractured zone in the process of mining was obtained.It is concluded that the maximum development height and damage degree of the water flowing fractured zone will be affected when there are faults in working face advance,which will lead to the great increase of development height,resulting in water and sand inrush accidents.
出处
《山东科技大学学报（自然科学版）》
CAS
2017年第6期90-95,共6页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(41472281)
高等学校博士学科点专项科研基金项目(20133718110015)
关键词
断层
流砂
突出
数值模拟
fault
quicksand
inrush
numerical simulation
