偏“W”通风小煤柱联络巷优化设计
Optimal Design of Small Pillar Link-roadway of Partial W-type Ventilation
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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，巷道围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＞40 m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220 m间距呈135°方位角依次向里布置。并通过工程应用，表明该方案是合理的。Abstract: 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.
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