煤岩大巷围岩破坏特征与控制  

Failure Characteristics and Control of Surrounding Strata of Coal and Rock Roadway

作　　者：邱文华 孔令海 赵善坤[2,3] 张淑霞 王慧明[1] 

机构地区：[1]保利能源山西省中阳荣欣焦化有限公司高家庄煤矿,山西吕梁033400 [2]煤炭科学技术研究院有限公司安全分院,北京100013 [3]煤炭资源高效开采与洁净利用国家重点实验室(煤炭科学研究总院),北京100013 [4]滕州德勤工程咨询有限公司,山东枣庄277500

出　　处：《煤矿安全》2017年第11期202-205,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51304117;51404140);国家重点基础研究发展计划(973计划)资助项目(2010CB226806);中国煤炭科工集团科技创新基金资助项目(2013ZD002-04)

摘　　要：为解决煤岩大巷围岩变形量大和维护投入大等问题,采用理论分析、数值模拟和现场实测等方法,对比研究了高家庄矿煤岩大巷围岩破坏特征。结果表明,巷帮煤层和走向厚度变化较大的基本顶岩层是造成围岩大变形的主要原因,巷帮及顶板支护强度不足是影响围岩控制效果的根本原因。通过综合对比研究,对支护方案进行了优化,增加了帮部支护、提出了不等厚复合顶板锚索支护技术。实践表明,大巷顶板岩层的大变形破坏得到了一定程度的控制,巷帮大变形得以降低,提高了巷道维护周期,减少了巷道维护投入。In order to solve the problem of large deformation and big maintenance input of surrounding rock of coal rock roadway,by means of theoretical analysis, numerical simulation and field measurement, the failure characteristics of the surrounding rock of the coal mine of Gaojiazhuang Mine are compared. The results show that the laneway’s side of coal seam and the unequal thickness of main roof are the main causes of large scale destruction of surrounding strata; and the insufficiency of roadway and roof support is the fundamental reason to influence the control effect of surrounding rock. Through the comprehensive comparison study, the support scheme is optimized, and the support of coal wall side is increased, and the support technology of anchor cable for unequal thickness composite roof is proposed. The practice shows that the large deformation and damage of roof strata in the main roadway are controlled to some degree; the large deformation of laneway’s side is reduced, and the maintenance cycle of the roadway is improved and the maintenance input of the roadway is reduced.

关 键 词：极近距离煤层 煤岩巷道 围岩破坏机理 超声探测 支护技术 

分 类 号：TD353[矿业工程—矿井建设]