卸压瓦斯运移区“孔-巷”协同抽采布置参数优化及高效抽采
Optimization of “hole-drift” collaborative drainage layout parameters and high efficient drainage in pressure relief gas migration area
-
摘要: 高突矿井瓦斯抽采是治理工作面隅角瓦斯超限的重要手段，各抽采方式布置层位不同，其抽采效果存在明显差异，研究协同抽采各抽采方式的最优布置层位具有重要意义。为提高高抽巷抽采效率实现瓦斯精准抽采，基于“椭抛带”理论，运用Fluent数值模拟软件对协同抽采各抽采方式的布置层位进行模拟研究，分析各布置条件下工作面隅角瓦斯浓度，确定最优布置层位。模拟结果表明协同抽采中各抽采方式布置层位为：高抽巷最优平距25 m，最优垂距30 m，定向长钻孔最优平距在10～20 m，最优垂距在11～21 m。通过对单一抽采与协同抽采进行对比分析，协同抽采中回风侧快速提升区跨度明显增大，使得回风侧经上隅角涌入工作面的瓦斯强度降低，隅角瓦斯得到进一步控制。协同抽采较好解决了工作面回风侧风流引起的相对负压造成上隅角瓦斯大量聚集的问题，隅角涡流所引起的瓦斯聚集现象在长钻孔抽采下逐步消失。优化后的布置参数进行现场应用后，试验工作面在生产期间高抽巷平均抽采纯量为64.79 m3/min，占瓦斯涌出量的79.91%，定向长钻孔平均抽采纯量为9.68 m3/min，减小了风排瓦斯的压力，上隅角、回风巷最大瓦斯体积分数均控制在1%以内，试验工作面瓦斯超限问题得到有效治理，保证了生产工作安全高效进行。Abstract: Gas drainage in high outburst mine is an important means to control the gas overrun in the corner of the working face. The layout levels of each drainage mode are different, and there are obvious differences in the drainage effect. It is of great significance to study the optimal layout levels of each drainage mode of cooperation drainage. To improve the extraction efficiency of high extraction roadway and realize accurate gas extraction, based on the “elliptic paraboloid zone” theory, the layout horizon of each extraction mode of collaborative extraction is simulated and studied by using Fluent numerical simulation software, the gas concentration in the corner of the working face under each layout condition is analyzed, and the optimal layout horizon is determined. The simulation results show that the layout horizon of each extraction mode in collaborative extraction was: the optimal horizontal distance of high extraction roadway was 25 m, the optimal vertical distance was 30 m, the optimal horizontal distance of directional long drilling was 10-20 m, and the optimal vertical distance was 11-21 m. Through the comparative analysis of single extraction and collaborative extraction, in collaborative extraction, the span of the rapid lift zone area on the return air side is significantly increased, which reduces the gas intensity of the return air side flowing into the working face through the upper corner, and the corner gas was further controlled. Cooperative drainage better solves the problem of large accumulation of gas in the upper corner caused by the relative negative pressure caused by the return side wind flow of the working face, and the phenomenon of gas accumulation caused by the corner vortex gradually disappears under long borehole drainage. After the field application of the optimized layout parameters, the average net amount of gas extraction in the high drainage roadway during the production period of the test face is 64.79 m3/min, accounting for 79.91% of the gas emission, and the average net amount of gas extraction in the directional long drilling hole is 9.68 m3/min, which reduces the pressure of air exhaust gas, the maximum gas concentration in the upper corner and return air roadway is controlled within 1%, and the problem of gas overrun in the test face has been effectively controlled, which ensures the safe and efficient production.
-
-
期刊类型引用(21)
1. 梁运培，李赏，李全贵，郭亚博，孙万杰，郑梦浩，王程成. 基于FEDformer-LGBM-AT架构的采煤工作面上隅角瓦斯浓度预测. 煤炭学报. 2025(01): 360-378 . 
百度学术
2. 秦波涛，马东. 采空区煤自燃与瓦斯复合灾害防控研究进展及挑战. 煤炭学报. 2025(01): 392-408 . 百度学术
3. 张国华，柳杨，李子波，李豫波，荆珂. 高位钻孔瓦斯抽采参数的优化. 黑龙江科技大学学报. 2024(02): 163-170+187 . 百度学术
4. 张学博，王攀，王豪. 小断层影响下的采空区瓦斯运移规律研究. 煤炭科学技术. 2024(04): 214-230 . 本站查看
5. 秦伟. 王坪煤业高抽巷瓦斯抽采参数优化与应用研究. 山西煤炭. 2024(02): 98-104 . 百度学术
6. 薛彦平. 抽采条件下采空区瓦斯分布规律模拟及抽采技术研究. 煤矿机械. 2024(09): 53-56 . 百度学术
7. 华明国，李安红，刘扬，赵宇杰，崔宝库，姚邦华. 煤层瓦斯抽采信息化APP智能系统开发与应用研究. 矿业研究与开发. 2024(09): 186-193 . 百度学术
8. 廖小旭. 千米定向长钻孔瓦斯抽采工艺研究及应用. 山东煤炭科技. 2024(08): 56-59+70 . 百度学术
9. 韩文杰，鹿文勇. 采空区热动力灾害耦合演变过程及预警指标研究. 山东煤炭科技. 2024(11): 59-63 . 百度学术
10. 豆尧尧. 低透气煤层中定向长钻孔瓦斯抽采技术应用研究. 山西冶金. 2023(01): 185-186+198 . 百度学术
11. 刘军，张宪尚，张士岭. 煤层群上下保护层开采围岩应力时空演化规律及应用研究. 中国安全生产科学技术. 2023(06): 66-73 . 百度学术
12. 宋鑫，舒龙勇，王斌，凡永鹏，龚浩然，崔聪，安丰存. 低瓦斯赋存高强度开采煤层驱替促抽技术研究. 采矿与安全工程学报. 2023(04): 847-856 . 百度学术
13. 田向东. 贺西矿3412工作面“以孔代巷”瓦斯抽采技术应用. 山西化工. 2023(07): 154-155 . 百度学术
14. 任丽锋. 煤矿综采工作面上隅角瓦斯综合治理. 矿业装备. 2023(06): 112-113 . 百度学术
15. 宋龙龙. 防止矿井瓦斯超限的新型通风装置的设计及应用分析. 机械管理开发. 2023(10): 132-133+164 . 百度学术
16. 郭明杰，郭文兵，赵高博，袁瑞甫，王雨生，白二虎. 长壁开采覆岩内水平定向长钻孔位置特征与卸压瓦斯抽采机理. 煤炭学报. 2023(10): 3750-3765 . 百度学术
17. 马攀选，秦政. 瓦斯综合抽采技术在U型通风工作面的应用. 能源技术与管理. 2023(05): 8-11 . 百度学术
18. 文建东. 特厚煤层综采面瓦斯涌出规律及优化治理技术研究. 中国煤炭. 2023(11): 49-55 . 百度学术
19. 李艳奎，王海雷，张家行，李豪君. 基于“钻孔-巷道”双卸压圈的首采面瓦斯治理研究. 煤炭工程. 2022(09): 129-133 . 百度学术
20. 胡郑国. 工作面初采期瓦斯超限治理研究. 能源与节能. 2022(09): 20-22 . 百度学术
21. 李可，窦桂东，和递，孔祥国，徐传玉，董春发，张文. 瓦斯抽采效果动态分元评价系统及应用. 中国煤炭. 2022(10): 45-52 . 百度学术
其他类型引用(4)
计量
- 文章访问数: 311
- HTML全文浏览量: 7
- PDF下载量: 831
- 被引次数: 25
下载:
