摘要
采用数值模拟方法分析了偏“w”通风条件下联络巷在掘进和开采时，巷道固岩变形和应力显现规律，对偏“w”通风小煤柱联络巷进行了优化设计，研究结果表明：联络巷间距〉40mI情况下，其间距对联络巷的稳定性影响不大；联络巷与工作面巷道夹角是其主要影响因素，分析出夹角在60°～120°时，巷道及周边空间变形较为剧烈，得出优化设计方案：联络巷按220m间距呈135。方位角依次向里布置并通过工程应用。
By the means of numerical simulation,it analyzed the surrounding rock deformation and stress behavior law when driving and mining of link-roadway on the condition of partial W-type ventilation,and made optimal design for small pillar link-roadway of partial W-type ventilation.The results showed that link-roadways distance made very little difference to the stability of link-roadway if it was greater than 40m;the angle between link-roadway and working face was the major influence factor,and it obtained that roadways and surrounding space deformed severely within 60° ~ 120°;The optimal design scheme was that the link-roadway was in sequence arranged inside according to the distance of 220m and azimuth of 135°.Finally,the engineering application testified the rationality of the design.
出处
《煤矿安全》
CAS
北大核心
2013年第9期156-159,共4页
Safety in Coal Mines
关键词
偏“W”通风
联络巷
小煤柱
数值模拟
巷道夹角
partial W-type ventilation
link-roadway
small pillar
numerical simulation
angle between link-roadway
