低瓦斯煤层高强综放开采工作面合理长度确定
Determination of reasonable mining face length for high strength fully mechanized caving mining in low gas seams
-
摘要: 为了确定低瓦斯煤层高强综放开采工作面的合理长度，以布尔台矿42108综放面为研究对象，推导了综放工作面以通风能力校核工作面长度的公式，利用Fluent数值软件模拟了不同工作面长度下的瓦斯移运规律。结果表明：综放工作面以通风能力校核工作面长度的公式推导应充分考虑割煤及放煤回采率的差异性；工作面长度与瓦斯涌出量的作用关系存在临界值，工作面长度超过临界值后瓦斯涌出将对工作面安全生产产生较大威胁；结合理论计算与数值模拟结果最终确定42108工作面的合理长度为310 m。Abstract: In order to determine the reasonable length of the mining face for high strength fully mechanized caving mining in low gas seams, taking 42108 fully mechanized caving face of Buertai Mine as the research object, the formula of checking the mining face length with ventilation capacity is deduced, and the gas movement laws under different mining face lengths are simulated by Fluent numerical software. The results show that the difference of coal cutting and coal caving recovery rate should be fully considered in the derivation of the formula for checking the length of mining face with ventilation capacity. There is a critical value between the length of the mining face and the amount of gas emission. When the length of the mining face exceeds the critical value, the gas emission will pose a great threat to the safety production of the mining face. Combined with theoretical calculation and numerical simulation results, the reasonable length of 42108 mining face is finally determined to be 310 m.
-
-
[1] 李路广，李向阳，魏路浩，等.千米定向钻机在大宁煤矿瓦斯抽采中的应用[J].煤炭工程，2021，53（10）：84-88. LI Luguang, LI Xiangyang, WEI Luhao, et al. Application of directional kilometer drilling machine in gas extraction in Daning Coal Mine[J]. Coal Engineering, 2021, 53（10）: 84-88.
[2] 王磊，刘怀谦，谢广祥，等.含瓦斯煤孔裂隙结构精细表征及强度劣化机制[J].岩土力学，2021，42（12）：3203-3216. WANG Lei, LIU Huaiqian, XIE Guangxiang, et al. Fine characterization of the pore and fracture structure and strength degradation mechanism of gas bearing coal[J]. Rock and Soil Mechanics, 2021, 42（12）: 3203-3216.
[3] 张超林，王恩元，许江，等.煤层瓦斯压力对瓦斯抽采效果的影响[J/OL].采矿与安全工程学报：1-12[2022-03-28]. ZHANG Chaolin, WANG Enyuan, XU Jiang, et al. The influence of coal seam gas pressure on gas drainage effect[J/OL]. Journal of Mining & Safety Engineering:1-12[2022-03-28].
[4] 徐腾飞，王学兵.近十年我国低瓦斯煤矿瓦斯爆炸事故统计与规律分析[J].矿业安全与环保，2021，48（3）：126-130. XU Tengfei, WANG Xuebing. Statistics and regularity analysis of gas explosion accidents in domestic low-gas coal mines in recent ten years[J]. Mining Safety & Environmental Protection, 2021, 48（3）: 126-130.
[5] 陈月霞，许江，褚廷湘，等.相似煤储层瓦斯压力计算模型及其空间分布特征[J].中国矿业大学学报，2021， 50（3）：606-612. CHEN Yuexia, XU Jiang, CHU Tingxiang, et al. Calculation model of gas pressure in similar coal reservoir and its spatial distribution characteristics[J]. Journal of China University of Mining & Technology, 2021, 50（3）:606-612.
[6] 王亮，孙毅民，褚鹏，等.基于时空分布特征的煤层瓦斯测压准确性研究[J].中国安全科学学报，2021，31（2）：40-47. WANG Liang, SUN Yimin, CHU Peng, et al. Study on accuracy of coal seam gas pressure measurement based on its spatial and temporal distribution characteristics[J]. China Safety Science Journal, 2021, 31（2）: 40-47.
[7] 程远平，周红星.煤与瓦斯突出预测敏感指标及其临界值研究进展[J].煤炭科学技术，2021，49（1）：146. CHENG Yuanping, ZHOU Hongxing. Research progress of sensitive index and critical values for coal and gas outburst prediction[J]. Coal Science and Technology, 2021, 49（1）: 146.
[8] 贾廷贵，李颜兵，曲国娜.偏Y形通风工作面上隅角瓦斯抽采模拟[J].安全与环境学报，2021，21（6）：2472. JIA Tinggui, LI Yanbing, QU Guona. Simulated research on the gas drainage in the upper corner of the working face with partial Y type ventilation[J]. Journal of Safety and Environment, 2021, 21（6）: 2472-2478.
[9] 张增辉，薛彦平.基于“U”型下行通风的综放工作面瓦斯治理数值模拟研究[J].煤矿安全，2021，52（12）：183-187. ZHANG Zenghui, XUE Yanping. Numerical simulation study on gas control in fully mechanized top coal caving face based on “U” downward ventilation[J]. Safety in Coal Mines, 2021, 52（12）: 183-187.
[10] 刘超，孙宝强，李树刚，等.厚煤层双重卸压采动覆岩裂隙分布特征及卸压瓦斯抽采技术[J].煤矿安全，2021，52（12）：89-96. LIU Chao, SUN Baoqiang, LI Shugang, et al. Distribution characteristics of fractured rock in overburden induced by double pressure relief mining of thick coal seam and pressure relief gas extraction technology[J].Safety in Coal Mines, 2021, 52（12）: 89-96.
[11] 陈龙，龚选平，成小雨，等.低瓦斯高强度开采综放工作面卸压瓦斯抽采关键技术[J].西安科技大学学报，2021，41（5）：815-824. CHEN Long, GONG Xuanping, CHENG Xiaoyu, et al. Key technologies of pressure relief gas drainage in fully-mechanized caving face with low gas and high strength mining[J]. Journal of Xi’an University of Science and Technology, 2021, 41（5）: 815-824.
[12] 编写组.煤矿矿井采矿设计手册[M].北京：煤炭工业出版社，1984. [13] 顾润红.综放采空区3D空间非线性渗流及瓦斯运移规律数值模拟研究[D].阜新：辽宁工程技术大学,2012. [14] 王少锋，王德明，曹凯，等.采空区及上覆岩层空隙率三维分布规律[J].中南大学学报（自然科学版），2014，45（3）：833-839. WANG Shaofeng, WANG Deming, CAO Kai, et al. Distribution law of 3D fracture field of goaf and overlying strata[J]. Journal of Central South University （Science and Technology）, 2014, 45（3）: 833-839.
[15] 刘宇.采空区瓦斯与自燃灾害关联3D数值模拟研究[D].阜新：辽宁工程技术大学，2014. [16] 国家安全生产监督管理总局.煤矿安全规程[M].北京：煤炭工业出版社，2016. -
期刊类型引用(4)
1. 任峻杉，张洲，邢丽茹，余婉莹，王鹏翔，邹强，杨正滔. 沁水盆地柿庄南区块煤层气井煤粉产出特征及控制机理研究. 煤矿安全. 2025(02): 67-74 . 
本站查看
2. 胡皓，孔鹏，刘广景，张亚飞，张晓飞，张锦涛，任峻杉，张洲. 煤层气井筒单相流阶段煤粉动态沉降规律. 煤矿安全. 2025(02): 81-86 . 本站查看
3. 李盈. “三调法”治理大庆沙河子组低产气井实例分析. 西部探矿工程. 2024(05): 42-44 . 百度学术
4. 白杨，王路一，李翔，窦幻君，罗平亚. 煤层气储层保护钻井液技术研究进展. 天然气工业. 2024(10): 182-194 . 百度学术
其他类型引用(0)
计量
- 文章访问数: 53
- HTML全文浏览量: 0
- PDF下载量: 7
- 被引次数: 4
下载:
