突出煤层区域预测指标W-P模型优化及应用
Optimization and application of W-P model for regional prediction index of outburst coal seam
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摘要: 为了获取适合贵州不同矿区瓦斯含量和瓦斯压力内在关联，并能准确计算出符合煤层特征的两者指标测值，通过统计8个矿区57对矿井107组煤层瓦斯基础参数数据，基于Langmuir方程，引入破坏系数X和瓦斯放散初速度△p，建立了W-P优化模型，并对W-P经典模型与W-P优化模型在贵州矿区的适用性进行了对比研究。结果表明：W-P优化模型计算得到的瓦斯含量及压力数据与实测值拟合度较高，且随着实测值样本量的增加，拟合度逐渐增高；反演瓦斯含量及反演瓦斯压力的平均相对误差分别为6.44%和14.27%；相对于经典模型，优化模型的平均相对误差分别降低了17.54%和83.59%；应用W-P优化模型确定了矿井M16煤层瓦斯含量和瓦斯压力临界值分别为8.0 m3/t和0.74 MPa，与M16煤层实际发生瓦斯动力现象处的瓦斯含量和瓦斯压力值相吻合。
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关键词:
- Langmuir方程 /
- W-P经典模型 /
- W-P优化模型\瓦斯含量 /
- 瓦斯压力 /
- 区域预测
Abstract: In order to obtain the internal correlation of gas content and gas pressure suitable for different mining areas in Guizhou Province, and accurately calculate the measured values of the two indexes in line with the characteristics of coal seams, the W-P optimization model was established by statistical analysis of 107 groups of coal seam gas basic parameter data of 57 pairs of mines in 8 mining areas, based on the Langmuir equation, introducing the failure coefficient X and the initial velocity of gas emission △p, and the W-P classical model and W-P optimization model were compared. This paper makes a comparative study on the applicability in Guizhou mining area. The results show that: the gas content and pressure data calculated by W-P optimization model have high fitting degree with the measured value, and the fitting degree gradually increases with the increase of the sample size of the measured value, and the average relative error is 6.44% and 14.27% respectively. Compared with the classical model, the average relative error of the optimization model is reduced by 17.54% and 83.59% respectively; the critical values of gas content and gas pressure in M16 coal seam are determined to be 8.0 m3/t and 0.74 MPa respectively by using W-P optimization model, which is consistent with the gas content and gas pressure at the actual gas dynamic phenomenon in M16 coal seam.-
Keywords:
- Langmuir equation /
- W-P classical model /
- W-P optimization model /
- gas content /
- gas pressure
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[1] 郭德涛，曹运兴，杜冬冬，等.立井揭煤前测定煤层瓦斯压力的方法与实践[J].安全与环境学报，2017，17（2）：496-501. GUO Detao, CAO Yunxing, DU Dongdong, et al. Renovated reliable method for determining the coal seam gas pressure before exposure to the gassy coal seam in vertical shaft coal excavation[J]. Journal of Safety and Environment, 2017, 17（2）: 496-501.
[2] 刘高峰，张子戌，宋志敏，等.高温高压平衡水条件下煤吸附CH4实验[J].煤炭学报，2012，37（5）：794. LIU Gaofeng, ZHANG Zixu, SONG Zhimin, et al. Adsorption experiments on CH4 under the conditions of high temperature and pressure and equilibrium water[J]. Journal of China Coal Society, 2012, 37（5）: 794.
[3] 周动，冯增朝，赵东，等.煤表面非均匀势阱吸附甲烷特性数值模拟[J].煤炭学报，2016，41（8）：1968-1975. ZHOU Dong, FENG Zengchao, ZHAO Dong, et al. Numerical simulation on the methane adsorption characteristics of coal with non-uniform potential well[J]. Journal of China Coal Society, 2016, 41（8）: 1968-1975.
[4] 曹树刚，张遵国，李毅，等.突出危险煤吸附、解吸瓦斯变形特性试验研究[J].煤炭学报，2013，38（10）：1792-1799. CAO Shugang, ZHANG Zunguo, LI Yi, et al. Experimental study of deformation properties of outburst-prone coal induced by gas adsorption and desorption[J]. Journal of China Coal Society, 2013, 38（10）: 1792.
[5] 江林华，姜家钰，谢向向.基于Langmuir吸附的瓦斯含量和瓦斯压力的对应关系[J].煤田地质与勘探，2016，44（1）：17-21. JIANG Linhua, JIANG Jiayu, XIE Xiangxiang. Research on relationship between gas content and gas pressure based on Langmuir adsorption[J]. Coal Geology & Exploration, 2016, 44（1）: 17-21.
[6] 张晓东，桑树勋，秦勇，等.不同粒度的煤样等温吸附研究[J].中国矿业大学学报，2005，34（4）：427-432. ZHANG Xiaodong, SANG Shuxun, QIN Yong, et al. Isotherm adsorption of coal samples with different grain size[J]. Journal of China University of Mining & Technology, 2005, 34（4）: 427-432.
[7] 赵志根，唐修义.对煤吸附甲烷的Langmuir方程的讨论[J].焦作工学院学报（自然科学版），2002，21（1）：1-4. ZHAO Zhigen, TANG Xiuyi. Discussion about Langmuir equation concerning methane adsorption by coal[J]. Journal of Jiaozuo Institute of Technology （Natural Science）, 2002, 21（1）: 1-4.
[8] 张淑同.煤层瓦斯含量与瓦斯压力反算关系研究[J].中国矿业，2012，21（3）：116-118. ZHANG Shutong. Study on calculation relation between coal gas content and coal gas pressure[J]. China Mining Magazing, 2012, 21（3）: 116-118.
[9] 降文萍，宋孝忠，钟玲文.基于低温液氮实验的不同煤体结构煤的孔隙特征及其对瓦斯突出影响[J].煤炭学报， 2011，36（4）：609-614. JIANG Wenping, SONG Xiaozhong, ZHONG Lingwen. Research on the pore properties of different coal body structure coals and the effects on gas outburst based on the low-temperature nitrogen adsorption method[J]. Journal of China Coal Society, 2011, 36（4）: 609-614.
[10] 宋晓夏，唐跃刚，李伟，等.基于小角X射线散射构造煤孔隙结构的研究[J].煤炭学报，2014，39（4）：719. SONG Xiaoxia, TANG Yuegang, LI Wei, et al. Pore structure in tectonically deformed coals by small angle X-ray scattering[J]. Journal of China Coal Society, 2014, 39（4）: 719.
[11] 李子文，林柏泉，郝志勇，等.煤体多孔介质孔隙度的分形特征研究[J].采矿与安全工程学报，2013，30（3）：437-442. LI Ziwen, LIN Boquan, HAO Zhiyong, et al. Fractal characteristics of porosity for porous media in coal mass[J]. Journal of Mining & Safety Engineering, 2013, 30（3）: 437-442.
[12] 李祥春，何学秋，聂百胜.甲烷水合物在煤层中存在的可能性[J].天然气工业，2008，28（3）：130-132. LI Xiangchun, HE Xueqiu, NIE Baisheng. The possibility of gas hydrate existence in coal seams[J]. Natural Gas Industry, 2008, 28（3）: 130-132.
[13] 赵发军，温志辉，刘明举，等.分析组分对间接法测定煤层瓦斯压力的影响[J].煤炭科学技术，2010，38（4）：52-54. ZHAO Fajun, WEN Zhihui, LIU Mingju, et al. Analysis content affected to seam gas pressure measured with indirect method[J]. Coal Science and Technology, 2010, 38（4）: 52-54.
[14] 李志强，王司建，刘彦伟，等.基于动扩散系数新扩散模型的构造煤瓦斯扩散机理[J].中国矿业大学学报，2015，44（5）：836-842. LI Zhiqiang, WANG Sijian, LIU Yanwei, et al. Mechanism of gas diffusion in tectonic coal based on a diffusion model with dynamic diffusion coefficient[J]. Journal of China University of Mining & Technology, 2015, 44（5）: 836-842.
[15] 李志强，成墙，刘彦伟，等.柱状煤芯瓦斯扩散模型与扩散特征实验研究[J].中国矿业大学学报，2017，46（5）：1033-1040. LI Zhiqiang, CHENG Qiang, LIU Yanwei, et al. Research on gas diffusion model and experimental diffusion characteristic of cylindrical coal[J]. Journal of China University of Mining & Technology, 2017, 46（5）: 1033-1040.
[16] 李志强，刘勇，许彦鹏，等.煤粒多尺度孔隙中瓦斯扩散机理及动扩散系数新模型[J].煤炭学报，2016，41（3）：633-643. LI Zhiqiang, LIU Yong, XU Yanpeng, et al. Gas diffusion mechanism in multi-scale pores of coal particles and new diffusion model of dynamic diffusion coefficient[J]. Journal of China Coal Society, 2016, 41（3）: 633-643.
[17] 杜振宇，杨胜强，赵波.瓦斯膨胀能与瓦斯压力及瓦斯放散初速度的相互关系[J].煤矿安全，2012，43（11）：57-60. DU Zhenyu, YANG Shengqiang, ZHAO Bo. Relationship among gas expansion energy and gas pressure and initial speed of methane diffusion[J]. Safety in Coal Mines, 2012, 43（11）: 57-60.
[18] 贾东旭，孙景来.不同变质程度煤体破碎度对瓦斯放散初速度的影响[J].煤炭科学技术，2013，41（8）：68-70. JIA Dongxu, SUN Jinglai. Fragmentation of different metamorphic degree coal affected to initial velocity of gas emission[J]. Coal Science and Technology, 2013, 41（8）: 68-70.
[19] 张小东，李朋朋，张硕.不同煤体结构煤的瓦斯放散特征及其影响机理[J].煤炭科学技术，2016，44（9）：93-98. ZHANG Xiaodong, LI Pengpeng, ZHANG Shuo. Gasemission features of coals with different coal body structure and their influencing mechanism[J]. Coal Science and Technology, 2016, 44（9）: 93-98.
[20] 林海飞，程博，李树刚，等.煤的吸附孔结构对瓦斯放散特性影响的实验研究[J].采矿与安全工程学报，2016，33（3）：557-563. LIN Haifei, CHENG Bo, LI Shugang, et al. Experimental study on the effect of adsorption pore structure on gas emission characteristics[J]. Journal of Mining and Safety Engineering, 2016, 33（3）: 557-563.
[21] 程波，马代辉，高月.煤的灰分、挥发分与孔隙率的关联及其对瓦斯放散初速度的影响[J].矿业安全与环保，2017，44（1）：12-17. CHENG Bo, MA Daihui, GAO Yue. Correlation of ash content, volatile matter and porosity of coal and their impact on initial speed of methane diffusion[J]. Mining Safety & Environmental Protection, 2017, 44（1）: 12-17.
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