煤矿开采
煤礦開採
매광개채
COAL MINING TECHNOLOGY
2014年
4期
9-12
,共4页
能量准则%大采高综采%煤壁片帮%片帮机理
能量準則%大採高綜採%煤壁片幫%片幫機理
능량준칙%대채고종채%매벽편방%편방궤리
energy criterion%large-mining-height full-mechanized mining%coal-wall slide%slide mechanism
大采高工作面煤壁片帮冒顶严重影响工作面的产能和效能，通过分析大采高开采煤壁破坏典型的受拉破坏特征，得出了大面积片帮的板状失稳机理；采用线弹性能准则、脆性准则以及RQD指标来对大采高开采时煤壁的稳定性进行了评价；还探讨了割煤高度与煤壁片帮的关系，得出了特定煤层赋存条件下开采的临界稳定高度计算依据，提出了预防煤壁片帮的技术措施。
大採高工作麵煤壁片幫冒頂嚴重影響工作麵的產能和效能，通過分析大採高開採煤壁破壞典型的受拉破壞特徵，得齣瞭大麵積片幫的闆狀失穩機理；採用線彈性能準則、脆性準則以及RQD指標來對大採高開採時煤壁的穩定性進行瞭評價；還探討瞭割煤高度與煤壁片幫的關繫，得齣瞭特定煤層賦存條件下開採的臨界穩定高度計算依據，提齣瞭預防煤壁片幫的技術措施。
대채고공작면매벽편방모정엄중영향공작면적산능화효능，통과분석대채고개채매벽파배전형적수랍파배특정，득출료대면적편방적판상실은궤리；채용선탄성능준칙、취성준칙이급RQD지표래대대채고개채시매벽적은정성진행료평개；환탐토료할매고도여매벽편방적관계，득출료특정매층부존조건하개채적림계은정고도계산의거，제출료예방매벽편방적기술조시。
Coal-wall slide and roof fall seriously influence output and efficiency of mining face .By analyzing tension failure characteris-tic of coal-wall in large-mining-height mining, tabular instability mechanism of large-sized coal-wall slide was obtained.Applying linear-elastic energy principle , crisp principle and RQD index to evaluating coal-wall stability in large-mining-height mining , discussing the relationship of mining coal height and coal-wall slide , critical stability height calculation basis was obtained for specific coal -seam oc-currence condition and technical measure of preventing coal-wall slide was put forward .
