Determination of critical value of an outburst risk prediction index of working face in a coal roadway based on initial gas emission from a borehole and its application: A case study

Tang Jun; Wang Chaojie; Chen Yujia; Li Xiaowei; Yang Dingding; Liu Jie

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Determination of critical value of an outburst risk prediction index of working face in a coal roadway based on initial gas emission from a borehole and its application: A case study

机译：基于井孔初始气体排放的煤巷突出风险预测指标的临界价值及其应用 - 以案例研究

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This study developed a platform for determination of the predictive index for outbursts by simulating the field working face of coal roadway and a system for determining briquetting pressures of coal briquettes. Taking a predictive index called the 'initial gas emission from a borehole' (IGEB) as an example, this research carried out the test for measuring this index in the laboratory and determined its critical value for outburst risk in the 31,011 working face in Xinyuan Coal Mine, Shanxi Province, China. Moreover, outburst risk at the 31,011 working face was predicted in the field. The research results on this premise of ignoring the influences of human factors on the outburst risk in the working face showed that the established platform for simulating the determination of the predictive index for outburst risk in the working face in the coal roadway can realise 100% accuracy in predicting the condition with no outburst risk by using critical value of the predictive index. Briquetting pressure of coal briquettes shows a relationship of exponential function with apparent density of the coal samples. When the briquetting pressure is greater than 30 MPa, the rate of increase thereafter in apparent density decreases, so that coal briquettes undergo work-hardening. The IGEB is a comprehensive predictive index for outburst risk reflecting in situ stress, gas pressure, and mechanical properties of coal mass. The index value can, both sensitively and continuously, reflect changes in the conditions for occurrence of coal mass in front of the working face.

机译：本研究开发了一种通过模拟煤路巷道的野外工作面和确定煤煤层的压力来确定爆发的预测指数的平台。采用预测指数称为“井井初级气体排放”（IGEB）为例，该研究进行了测量实验室中该指标的测试，并确定了新源煤炭31,011个工作面爆发风险的临界价值矿山，山西省。此外，在该领域预测了31,011个工作面的突发风险。关于这一前提的研究结果忽视了人类因素对工作面突出风险的影响，表明，模拟煤道路工作面上突出风险的预测指数的成熟平台可以实现100％的准确性通过使用预测指数的临界值预测没有突出风险的条件。煤煤层的压力表明了具有煤样的表观密度的指数功能的关系。当压力大于30MPa时，随后表观密度的增加速率降低，使得煤煤层经历工作硬化。 IGEB是突出风险的综合预测指标，用于反映煤质量的原位应力，气体压力和机械性能。索引值可以敏感和连续地，反映在工作面前面发生煤质量的条件的变化。

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来源
《Fuel》 |2020年第may1期|117229.1-117229.10|共10页
作者
Tang Jun; Wang Chaojie; Chen Yujia; Li Xiaowei; Yang Dingding; Liu Jie;
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作者单位

China Univ Min & Technol Key Lab Gas & Fire Control Coal Mines Minist Educ Xuzhou 221116 Jiangsu Peoples R China|China Univ Min & Technol Sch Safety Engn Xuzhou 221116 Jiangsu Peoples R China;

China Univ Petr East China Dept Safety Sci & Engn Qingdao 266580 Peoples R China|China Univ Petr East China Ctr Offshore Engn & Safety Technol Qingdao 266580 Peoples R China;

China Univ Min & Technol Key Lab Gas & Fire Control Coal Mines Minist Educ Xuzhou 221116 Jiangsu Peoples R China|China Univ Min & Technol Sch Safety Engn Xuzhou 221116 Jiangsu Peoples R China;

China Univ Min & Technol Key Lab Gas & Fire Control Coal Mines Minist Educ Xuzhou 221116 Jiangsu Peoples R China|China Univ Min & Technol Sch Safety Engn Xuzhou 221116 Jiangsu Peoples R China;

Zhejiang Ocean Univ Sch Petrochem & Energet Engn Zhoushan 316022 Zhejiang Peoples R China;

China Univ Min & Technol Key Lab Gas & Fire Control Coal Mines Minist Educ Xuzhou 221116 Jiangsu Peoples R China|China Univ Min & Technol Sch Safety Engn Xuzhou 221116 Jiangsu Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Coal briquette; Apparent density; Prediction model; Dynamic disaster; Gas expansion energy;

机译：煤煤层;表观密度;预测模型;动态灾难;气体扩张能量;

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专利

1. A Fisher's Criterion-Based Linear Discriminant Analysis for Predicting the Critical Values of Coal and Gas Outbursts Using the Initial Gas Flow in a Borehole [J] . Li Xiaowei, Jiang Chenglin, Tang Jun, Mathematical Problems in Engineering . 2017,第期

机译：基于Fisher准则的线性判别分析，可通过钻孔中的初始气流预测煤与瓦斯突出的临界值
2. Prediction of coal and gas outburst risk at driving working face based on Bayes discriminant analysis model [J] . Chen Liang, Yu Liang, Ou Jianchun, Earthquake and structures: An International journal of earthquake engineering & earthquake effects on structures . 2020,第1期

机译：基于贝叶斯判别分析模型的驾驶工作面煤与煤气突出风险的预测
3. Study on the critical value of gas content in regional prediction of coal and gas outburst based on gas adsorption and desorption experiment [J] . LIANG CHEN, SHAOWU FAN, JIANHANG GUO Journal of Mines, Metals & Fuels . 2017,第9期

机译：基于气体吸附和解吸实验的煤气突出区域预测煤气含量临界价值研究
4. Optimization for Prediction Indexes of Coal and Gas Outburst in Coal Roadway Excavation Working Face Based on Grey Synthetically Relational Degree [C] . Xiangzeng Du International Conference on Energy and Environmental Protection . 2012

机译：基于灰色综合关系度的煤道路挖掘工作面煤气爆发预测指标的优化
5. The development of a coal mine portable microseismic monitoring system for the study of rock gas outbursts in the Sydney coal field, Nova Scotia. [D] . Corbett, Gary Robert. 1997

机译：开发用于研究新斯科舍省悉尼煤田岩气爆发的煤矿便携式微地震监测系统。
6. Laboratory Study Phenomenon of Coal and Gas Outburst Based on a Mid-scale Simulation System [O] . Baisheng Nie, Yankun Ma, Shoutao Hu, -1

机译：基于中型模拟系统的煤与瓦斯突出实验室研究现象
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8. Initial Rate of Gas Emission from Coal as One of the Indices of Outburst Hazards in Coal Seams [R] . Lidin, G. D., Ettinger, I. L. 1977

机译：作为煤层突出危险指标之一的煤炭瓦斯涌出初始速率

Determination of critical value of an outburst risk prediction index of working face in a coal roadway based on initial gas emission from a borehole and its application: A case study

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