特殊地质条件下工作面终采线合理位置的确定
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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。
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.
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.
引文
[1]李永生,刘彦昌.锚网支护在综采工作面回撇通道中的应用[J].煤炭科学技术,2010,38(4):35-37.
[2]陈科,柏建彪,胡忠超,等.超前支承压力对下山的影响分析及合理停采线位置确定[J].煤矿开采,2010,15(1):35-37.
[3]王晓振,鞠金峰,许家林.神东浅埋综采面末采段让压开采原理及应用[J].采矿安全与工程学报,2010,29(2):151-156.
[4]钱鸣高,石平五.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2003:1-4.
[5]吴吉南,冯学武,刘保宽.重型综放工作面无预回撤通道快速撤出技术[J].煤炭科学技术,2008,36(5):14-17.
[6]黄醒春,寇新建.鹤壁六矿-300m水平地应力场与矿压显现特征[J].矿冶工程,1999,19(2):20-23.
[7]孟召平,彭苏萍,黎洪.正断层附近煤的物理力学性质变化及其对矿压分布的影响[J].煤炭学报,2001,26(6):561-565.
[8]李志华,窦林名,陈国祥,等.采动影响下断层冲击矿压危险性研究[J].中国矿业大学学报,2010,39(4):490-495.
[9]韦四江,支光辉,勾攀峰.滑动构造下回采工作面异常矿压显现规律模拟[J].西安科技大学学报,2010,30(4):402-405.
[10]支光辉,韦四江,黄春光.告成矿滑动构造顶板矿压观测研究[J].矿治工程,2011,31(3):22-25.
[11]尹立明,郭惟嘉,尹增德.断层影响下覆岩破坏规律研究[J].山东科技大学学报:自然科学版,2009,28(4):59-63.
[12]张宏伟,马翼飞,段可信.构造应力与矿区地震[J].辽宁工程技术大学学报:自然科学版,1998,17(1):1-6.
[13]张宏伟,邓智毅.地质动力区划在岩体应力预测中的应用[J].安徽理工大学学报:自然科学版,2004,24(3):9-13.
[14]初明祥,颜景光.回采巷道松动圈厚度的确定与控制[J].煤炭科学技术,2003,31(9):53-55.
[15]石建军,马念杰.闫德忠巷道围岩松动圈测试技术及应用[J].煤炭工程,2008(3):32-34.
[16]邢彦文.塔山矿石炭系特厚破碎煤层巷道支护技术[J].煤炭科学技术,2007,35(3):10-12.
[2]陈科,柏建彪,胡忠超,等.超前支承压力对下山的影响分析及合理停采线位置确定[J].煤矿开采,2010,15(1):35-37.
[3]王晓振,鞠金峰,许家林.神东浅埋综采面末采段让压开采原理及应用[J].采矿安全与工程学报,2010,29(2):151-156.
[4]钱鸣高,石平五.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2003:1-4.
[5]吴吉南,冯学武,刘保宽.重型综放工作面无预回撤通道快速撤出技术[J].煤炭科学技术,2008,36(5):14-17.
[6]黄醒春,寇新建.鹤壁六矿-300m水平地应力场与矿压显现特征[J].矿冶工程,1999,19(2):20-23.
[7]孟召平,彭苏萍,黎洪.正断层附近煤的物理力学性质变化及其对矿压分布的影响[J].煤炭学报,2001,26(6):561-565.
[8]李志华,窦林名,陈国祥,等.采动影响下断层冲击矿压危险性研究[J].中国矿业大学学报,2010,39(4):490-495.
[9]韦四江,支光辉,勾攀峰.滑动构造下回采工作面异常矿压显现规律模拟[J].西安科技大学学报,2010,30(4):402-405.
[10]支光辉,韦四江,黄春光.告成矿滑动构造顶板矿压观测研究[J].矿治工程,2011,31(3):22-25.
[11]尹立明,郭惟嘉,尹增德.断层影响下覆岩破坏规律研究[J].山东科技大学学报:自然科学版,2009,28(4):59-63.
[12]张宏伟,马翼飞,段可信.构造应力与矿区地震[J].辽宁工程技术大学学报:自然科学版,1998,17(1):1-6.
[13]张宏伟,邓智毅.地质动力区划在岩体应力预测中的应用[J].安徽理工大学学报:自然科学版,2004,24(3):9-13.
[14]初明祥,颜景光.回采巷道松动圈厚度的确定与控制[J].煤炭科学技术,2003,31(9):53-55.
[15]石建军,马念杰.闫德忠巷道围岩松动圈测试技术及应用[J].煤炭工程,2008(3):32-34.
[16]邢彦文.塔山矿石炭系特厚破碎煤层巷道支护技术[J].煤炭科学技术,2007,35(3):10-12.
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