大跨度动压影响硐室支护技术研究  

Study on Supporting Technology for Large- span Chamber under Dynamic Pressure Impact

作　　者：车明 王永涛[2] 刘长安 

机构地区：[1]淄博矿业集团有限责任公司岱庄煤矿,山东济宁272073 [2]淄博矿业集团有限责任公司,山东淄博255000 [3]徐州中矿大贝克福尔科技有限公司,江苏徐州221116

出　　处：《矿业安全与环保》2014年第4期97-99,103,共4页Mining Safety & Environmental Protection

摘　　要：岱庄煤矿23采区中部泵房是该采区疏排水的重要硐室,其宽度在6 m以上,属于典型的大跨度硐室,支护技术要求较高。以该矿23采区中部泵房为研究对象,采用调查分析、数值模拟、现场试验等方法,重点研究动压影响下底板大跨度硐室支护技术,分析动压影响下硐室围岩活动规律,提出了动压影响下底板大跨度硐室支护技术方案,即在原一次锚网支护的基础上,采用二次锚网索加固支护,底板用锚网索支护,提高了浅部围岩的承载能力,有效改善了硐室围岩稳定性。The central pumping room in No. 23 mining district is an important chamber for water removing in this district in Daizhuang Mine, it is more than 6m wide, belongs to a typical large-span underground chamber and needs a higher supporting technology. In this paper, by taking the central pumping room in No. 23 mining district as a research object and through the survey analysis, numerical simulation and site test, research was focused on the supporting technology for floor large- span chamber under the dynamic pressure impact, analysis was made on the movement regularity of the rock mass around the chamber under the dynamic pressure impact, the technological solutions for supporting the floor large-span chamber under the dynamic pressure impact were put forward, that is, on the basis of the original first bolt-mesh support, adopting the secondary boh-mesh -anchor support for reinforcement and the bolt-mesh-anchor support for floor, which enhanced the beating capacity of the shallow surrounding rock and effectively improved the stability of the chamber＇ s surrounding rock.

关 键 词：动压影响 大跨度硐室 数值模拟 支护技术 

分 类 号：TD354[矿业工程—矿井建设]