Determining the rational layout parameters of the lateral high drainage roadway serving for two adjacent working faces
Determining the rational layout parameters of the lateral high drainage roadway serving for two adjacent working faces
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相邻两工作面侧向高排水巷道合理布置参数的确定
DOI：
10.1016/j.ijmst.2016.05.030
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发表时间：
2016-09
影响因子：
11.8
通讯作者：
Wang Hongsheng
中科院分区：
文献类型：
--
作者：
Li Shugang;Shuang Haiqing;Wang Hongsheng
为确定两相邻工作面横向高抽巷合理布置参数，建立了采动影响下的横向高抽巷力学模型，分析了采动影响下覆岩裂隙、采动应力分布规律。首先，分析了采动覆岩裂隙发育特征及工作面上段应力分布规律。其次，通过分析不同层位的竖向应力分布规律，确定了水平巷道的横向间距为25 m。再次，通过分析水平巷道在距顶板20、25、30 m高度处的围岩变形效应、应力分布规律和覆岩裂隙分布规律，确定了水平巷道的合理层位为25 m。最后，给出了位于2号煤层顶板上方25 m，距2-603工作面25 m处的LHDR的实例。结果表明，2-603工作面开采时，围岩滞后80 m以上，工作面趋于稳定。道路顶部和底部及其两侧墙壁的相对变形分别为583和450毫米。巷道断面缩小率为21.52%~ 25.32%。该巷道断面足以抽采2-605工作面覆岩卸压瓦斯。分支管线处瓦斯平均浓度为24.8%，纯气量为22.3 m3/min，说明高位钻孔位置合理。
To determine the rational layout parameters of the lateral high drainage roadway (LHDR) serving for two adjacent working faces, a mechanical model of the LHDR under mining influence was established, and the overburden fissure, mining-induced stress distribution rules were analyzed. First, the development characteristics of mining-induced overburden fissure and the stress distribution law of the upper section of the working face were analyzed. Second, by analyzing the distribution law of vertical stress at different layers, the lateral distance of the LHDR was determined as 25 m. Third, by analyzing the surrounding rock deformation effect, stress distribution law, and overburden fissure distribution law of the LHDR at the heights of 20, 25, and 30 m away from the roof, the rational horizon of the LHDR was determined to be 25 m. Finally, an example of a LHDR located 25 m above the roof of the No. 2 coal seam and 25 m away from the No. 2-603 working face was presented. Results show that when the No. 2-603 coalface is being mined, the surrounding rocks lag 80 m or even further and the working face tends to be stable. The relative deformations of the roof and floor of the roadway and both of its walls were 583 and 450 mm, respectively. The reduction rate of the roadway section was 21.52%–25.32%. The section of the roadway was sufficient to extract the pressure relief gas in the overburden of the No. 2-605 working face. The average gas concentration and the pure volume at the branch pipeline were 24.8% and 22.3 m3/min, respectively, showing that the position of high-level boreholes was reasonable.
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影响因子：
8.3
作者：
Ping Lu;Ping Li;Jian Chen;Chuijin Zhang;Junhua Xue;Tao Yu
通讯作者：
Ping Lu;Ping Li;Jian Chen;Chuijin Zhang;Junhua Xue;Tao Yu
DOI：
--
发表时间：
2014
期刊：
Journal of Liaoning Technical University
影响因子：
--
作者：
Lin Haife
通讯作者：
Lin Haife
DOI：
--
发表时间：
2012
期刊：
Journal of Safety Science and Technology
影响因子：
--
作者：
M. Chao
通讯作者：
M. Chao
DOI：
10.1007/s12404-009-0202-x
发表时间：
2009-04
期刊：
Journal of Coal Science and Engineering (China)
影响因子：
--
作者：
Liang Yuan
通讯作者：
Liang Yuan
DOI：
10.1016/j.ijmst.2014.03.017
发表时间：
2014-05-01
影响因子：
11.8
作者：
Sheng, Xue;Liang, Yuan;Yucang, Wang
通讯作者：
Yucang, Wang