梯形荷载下的采场顶板岩层运动及支架承载计算研究

在经典实用矿压理论的基础上,通过简化岩梁荷载为梯形荷载,建立了采场支架围岩结构力学模型,重新推导了基本顶初次来压和周期来压的计算公式。利用新公式,结合汝箕沟煤矿32211综采工作面的开采实际状况,计算了基本顶初次来压步距和周期来压步距,并对比了经典实用矿压理论的计算结果及实测数据。研究表明,新公式计算的结果更接近山地开采条件下的实测数据,对煤矿的安全生产起到了指导作用。...

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Bibliographic Details
Published in煤炭学报 Vol. 37; no. 5; pp. 731 - 736
Main Author 赵晓东 王海龙
Format Journal Article
LanguageChinese
Published 2012
Subjects
岩层运动
梯形荷载
结构力学模型
顶板
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Summary:在经典实用矿压理论的基础上,通过简化岩梁荷载为梯形荷载,建立了采场支架围岩结构力学模型,重新推导了基本顶初次来压和周期来压的计算公式。利用新公式,结合汝箕沟煤矿32211综采工作面的开采实际状况,计算了基本顶初次来压步距和周期来压步距,并对比了经典实用矿压理论的计算结果及实测数据。研究表明,新公式计算的结果更接近山地开采条件下的实测数据,对煤矿的安全生产起到了指导作用。
Bibliography:Based on the classical theory of practical ground pressure,a new structural mechanics model of working face was proposed on the condition of simplifying rock beam load into trapezoidal load,in which the formulas of main roof of initial pressure and periodic pressure were redefined.The new formulas were applied to calculate the weighting step with the actual mining situation of 32211 fully mechanized working face at Rujigou Coal Mine.The calculated results are closer to the measured data compared with the classical theory and will play a guiding role for coal mine safe production.
11-2190/TD
ZHAO Xiao-dong,WANG Hai-long（China-Japan Research Center for Geo-environmental Science,Pioneer Park of Academician,Dalian University,Dalian 116622,China）
trapezoidal load; roof; rock strata movement; structure mechanical model
ISSN:0253-9993