坚硬顶板条件下防治冲击地压的措施  

Measures for Prevention and Control of Rock Burst under Hard Roof Conditions

作　　者：李星亮 Li Xing-liang(Shaanxi Railway Engineering Vocational Technical Institute, Shaanxi Weinan 71400)

机构地区：[1]陕西铁路工程职业技术学院,陕西渭南714000

出　　处：《山东煤炭科技》2018年第9期172-174,共3页Shandong Coal Science and Technology

摘　　要：煤层上覆岩层中的坚硬厚层砂岩顶板是引起冲击地压发生的主要因素之一。以砚北煤矿250205工作面开采为例说明采用顶板注水软化、钻孔卸压、顶板预裂爆破和强制放顶等手段可使坚硬顶板集聚的弹性能释放或转移,降低煤岩体应力集中程度和冲击倾向性,治理效果良好,从而消除诱发冲击地压的根源。The hard and thick sandstone roof in the overlying strata of coal seam is one of the main factors causing rock burst. Taking the 250205 working face of Yanbei Coal Mine as an example, this paper illustrates that the use of roof water injection softening, borehole pressure relief, roof pre-splitting blasting and forced caving can release or transfer the elastic energy of hard roof aggregation, reduce the stress concentration degree and impact tendency of coal and rock mass, and have good control effect, thus eliminating the root of rock burst.

关 键 词：冲击地压 坚硬顶板 关键层 注水软化 钻孔卸压 

分 类 号：TD324.2[矿业工程—矿井建设]