新集二矿1#煤层开采采空区侧向卸压瓦斯排放宽度研究
Study on Gas Emission Width of Pressure Relief Along the Lateral Direction of Goaf in 1# Coal Seam of Xinji No.2 Mine
-
摘要: 为研究工作面回采后本煤层卸压范围和瓦斯自排放宽度,针对新集二矿1#煤层瓦斯地质赋存条件,对210108工作面采空区侧向煤体的瓦斯含量、钻屑量及钻屑解析指标进行考察研究,并结合数值模拟结果,确定了工作面卸压带宽度。现场测试数据及数值模拟结果表明:1#煤层210108工作面瓦斯卸压宽度范围为0~12 m;采空区侧向垂直应力在距离采空区0~10 m范围内为应力降低区;结合现场实际情况综合确定该面卸压宽度为10 m。Abstract: In order to study the pressure relief range and gas emission width after extraction of stope, according to the gas geological condition of Xinji No.2 Mine 1# coal seam, field measurement of gas content, drilling cuttings and analytical indexes are carried out along the lateral direction of the goaf in 210108 stope, combined with the numerical simulation results, the width of lateral pressure relief range is determined. The results of field test data and numerical simulation show that the width of gas unloading pressure in the 210108 working face of 1# coal seam is 0 to 12 m; the lateral vertical stress within the range of 0 to 10 m from the goaf is the stress reduction zone; combined with the actual situation of the field, it is determined that the pressure relief width of this surface is 10 m.
-
-
[1] 欧建春,王恩元,马国强,等.煤与瓦斯突出过程煤体破裂演化规律[J].煤炭学报,2012,37(6):978-983. [2] 赵志刚,谭云亮,程国强.煤巷掘进迎头煤与瓦斯突出的突变机制分析[J].岩土力学,2008,29(6):1644. [3] 蔡峰.煤巷掘进过程中煤与瓦斯突出机理的研究[D].淮南:安徽理工大学,2005. [4] 王志强,冯锐敏,高运,等.突出煤层实现连续卸压的倾斜近距下保护层开采技术研究[J].岩石力学与工程学报,2013,32(S2):3795-3803. [5] 王轶波,齐黎明,马尚权,等.煤巷两帮卸压瓦斯带宽度理论分析及应用[J].中国煤炭,2009,35(2):59. [6] 路聚堂,高爱民,崔子强,等.注水对工作面前方煤体特性影响的数值分析[J].煤矿安全,2011,42(4):21. [7] 卢平,袁亮,程桦,等.低透气性煤层群高瓦斯采煤工作面强化抽采卸压瓦斯机理及试验[J].煤炭学报,2010,35(4):580-585. [8] 林柏泉,周世宁.煤巷卸压带及其在煤和瓦斯突出危险性预测中的应用[J].中国矿业大学学报,1993,22(4):44-52. [9] 李云,冷超,刘垒.高瓦斯回采工作面卸压带瓦斯治理技术研究[J].煤矿开采,2015,20(5):77-79. [10] 付江伟,傅雪海,蒋玉玺.单一低透气性煤层卸压带瓦斯抽采的基础研究[J].矿业安全与环保,2012,39(1):4-7. [11] 张淑同,张庆华,李慧民,等.基于瓦斯涌出量的煤巷瓦斯排放带宽度研究[J].矿业安全与环保,2009,36(6):14-16. [12] 李宵尖,李炎涛,王兆丰.煤层巷道周围瓦斯排放宽度研究[J].煤矿安全,2012,43(11):1-4.
计量
- 文章访问数: 249
- HTML全文浏览量: 0
- PDF下载量: 0