神华科技
神華科技
신화과기
NORTHWEST COAL
2011年
3期
45-47,81
,共4页
冲击地压%工作面冲击%“三面孤岛”空间结构%浅埋深
遲擊地壓%工作麵遲擊%“三麵孤島”空間結構%淺埋深
충격지압%공작면충격%“삼면고도”공간결구%천매심
Rock burst%Mining face rock burst%Spatial structure of ＂an island surrounded by minded areas on the three sides＂%Shallow mining depth
针对浅埋深矿井首次发生在工作面的冲击地压问题,通过对宽沟煤矿W1143工作面地质及生产技术条件分析,初步得出煤层强冲击倾向性、坚硬难垮顶板、＂三面孤岛＂空间结构、地震多发带、水平地应力和断层等地质构造是影响冲击的主要影响因素。基于此,采用钻屑法初步划分了几个冲击危险区,并提出了顶板深孔爆破弱化顶板、煤体爆破卸压和巷帮施工卸压硐室等防冲措施。
針對淺埋深礦井首次髮生在工作麵的遲擊地壓問題,通過對寬溝煤礦W1143工作麵地質及生產技術條件分析,初步得齣煤層彊遲擊傾嚮性、堅硬難垮頂闆、＂三麵孤島＂空間結構、地震多髮帶、水平地應力和斷層等地質構造是影響遲擊的主要影響因素。基于此,採用鑽屑法初步劃分瞭幾箇遲擊危險區,併提齣瞭頂闆深孔爆破弱化頂闆、煤體爆破卸壓和巷幫施工卸壓硐室等防遲措施。
침대천매심광정수차발생재공작면적충격지압문제,통과대관구매광W1143공작면지질급생산기술조건분석,초보득출매층강충격경향성、견경난과정판、＂삼면고도＂공간결구、지진다발대、수평지응력화단층등지질구조시영향충격적주요영향인소。기우차,채용찬설법초보화분료궤개충격위험구,병제출료정판심공폭파약화정판、매체폭파사압화항방시공사압동실등방충조시。
For the rock burst that occurred for the first time on the mining face of shallow depth mine,the essay analyzes the geological and technical conditions of Kuangou coal mine＇s W1143 mining face,and concludes that coal seam strong rock burst tendency,hard roof,the spatial structure of ＂an island surrounded by minded areas on the three sides＂,earthquake-prone zone,the level of stress,faults and other geological structures are the main factors that affect the burst.Based on this,the method of drilling and cutting is initially used to demarcate several potential burst zones,and it is proposed that prevention measures such as roof deep-hole blasting to weaken the roof,coal blasting for pressure relief and roadway wall pressure relief chamber.
