大采高综采工作面回撤通道围岩破坏特征及控制技术研究  

Research on Failure Characteristics and Control Technology of Surrounding Rock in Withdrawal Channel of Large Mining Height Fully Mechanized Mining Face

作　　者：张世锐 史宏宝 刘晓龙 Zhang Shirui;Shi Hongbao;Liu Xiaolong(Shanxi Pulongwan Coal Industry Co.,Ltd.,Datong 034400,China)

机构地区：[1]山西铺龙湾煤业有限公司,山西大同034400

出　　处：《山东煤炭科技》2025年第3期23-26,共4页Shandong Coal Science and Technology

摘　　要：针对大采高综采工作面回撤通道变形、设备回撤受阻等隐患,以铺龙湾煤业5206工作面为工程背景,设计了回撤通道支护方案。数值模拟显示,随着工作面液压支架的回撤,回撤通道塑性区逐渐扩展,采空区侧帮部塑性区发育高度和深度分别稳定在6.5 m和5.0 m,通道右帮塑性区发育高度和深度分别稳定在6.5 m和4.5m,顶板塑性区由两端向中心逐渐发展,最终高度稳定在4.5m。5206工作面回撤通道掘进及支护完成后,回撤通道、回撤通道联巷顶底板最大移近量分别为284.6 mm、245.3 mm,实测数据进一步确认了支护方案的成效。In response to the hidden dangers such as deformation of the withdrawal channel,obstruction of equipment withdrawal and others in the large mining height fully mechanized mining face,taking the 5206 working face of Pulongwan Coal Industry as the engineering background,a withdrawal channel support scheme is designed.Numerical simulation shows that as the hydraulic support of the working face withdrew,the plastic zone of the withdrawal channel gradually expanded,and the developmental height and depth of the plastic zone on the side of the goaf remained stable at 6.5 m and 5.0 m,respectively.The developmental height and depth of the plastic zone on the right side of the channel remained stable at 6.5 m and 4.5 m,respectively.The plastic zone of the roof gradually developed from both ends to the center,and the final height remained stable at 4.5 m.After the excavation and support of the withdrawal channel in the 5206 working face are completed,the maximum displacement amount of the roof and floor of the withdrawal channel and the withdrawal channel connected roadway are 284.6 mm and 245.3 mm,respectively.The actual measurement data further confirms the effectiveness of the support scheme.

关 键 词：回撤 通道 支护 

分 类 号：TD353[矿业工程—矿井建设]