露天煤矿地质灾害致灾机理与边坡失稳预测分析  

Analysis of Geological Disaster Mechanism and Slope Instability Prediction in Open-pit Coal Mine

作　　者：姚世来 Yao Shilai(Inner Mongolia Pingxi Baiyinhua Coal Industry Co.,Ltd.,Xilinhot,China)

机构地区：[1]内蒙古平西白音华煤业有限公司,内蒙古锡林浩特

出　　处：《科学技术创新》2023年第9期196-199,共4页Scientific and Technological Innovation

摘　　要：本研究以某露天煤矿为例,首先介绍了矿区基本情况和采空区、断层活化的致灾机理。随后使用FLAC软件建立了露天煤矿的边坡数学模型,并选择3#和5#两个典型剖面展开了边坡失稳预测分析。结果表明,3#剖面所在的边坡处于局部解体状态,不宜进行矿藏开采;5#剖面所在的边坡,第1和2段岩土结构稳定性较好,第3和4段煤层上覆岩体变形情况较为明显。为防止边坡失稳、保证作业安全,只能开采到第2段,即最大井采深度需要控制在850 m以内。Taking an open-pit coal mine as an example,this research firstly introduces the basic situation of the mine and the disaster causing mechanism of goaf and fault activation.Then the slope mathematical model of open-pit coal mine is established by using FLAC software,and the slope instability prediction analysis is carried out by selecting 3#and 5#two typical sections.The results show that the slope of section 3 is in a state of partial disintegration,which is not suitable for mining.In the slope of Section 5#,the rock and soil structure in Section 1 and 2 is stable,and the deformation of overlying rock mass in Section 3 and 4 coal seam is obvious.In order to prevent slope instability and ensure the safety of the operation,only the second stage,the maximum depth of the well must be controlled within 850 m.

关 键 词：煤矿地质灾害 采空区 FLAC 边坡失稳 

分 类 号：TD824[矿业工程—煤矿开采] P694[矿业工程—矿山开采]