【摘要】 为解决褶皱构造条件下龙马矿3206工作面终采线合理位置确定的问题,模拟了3206工作面终采线距3207工作面回风巷25、20、15、10 m时回风巷的应力分布情况,并对比分析其围岩变形情况,结果表明:3206工作面终采线距3207工作面回风巷20 m时,围岩应力为6.2～12.6 MPa,支承压力峰值达到最小值,巷道顶板下沉量控制在100 mm以内,在保证3206工作面安全回采及减少煤柱损失的同时,也确保了3207工作面回风巷的稳定。更多还原

【Abstract】 In order to solve the rational location determination of the mining terminal line for No.3206 coal mining face under the fold structure conditions in Xialongma Mine,the paper simulated the stress distribution conditions of the air returning gateway when the mining terminal line of No.3206 coal mining face had a distance of 25,20,15 and 10 meters to the air returning gateway of No.3207 coal mining face.The surrounding rock deformation conditions were analyzed.The results showed that when the mining terminal line of No.3206 coal mining face had a distance of the 20 m to the air returning gateway of No.3207 coal mining face,the stress of the surrounding rock was 6.2~12.6 MPa,the peak value of the support pressure reached minimum and the roof subsidence value of the gateway was controlled within 100 mm.The safety mining of No.3206 coal mining face could be ensured and the lost of coal pillar could be reduced,thus the stability of air returning gateway in No.3207 coal mining face could be ensured.更多还原