煤与瓦斯突出巷道网中煤岩流运行仿真实现

doi:10.16182/j.issn1004731x.joss.201706025

系统仿真学报 ›› 2017, Vol. 29 ›› Issue (6): 1344-1350.doi: 10.16182/j.issn1004731x.joss.201706025

煤与瓦斯突出巷道网中煤岩流运行仿真实现

李宗翔^1,2, 王雅迪^1,2, 张春华³, 王天明^1,2

1.辽宁工程技术大学安全科学与工程学院, 辽宁阜新 123000;
2.矿山热动力灾害与防治教育部重点实验室, 辽宁阜新 123000;
3.辽宁工程技术大学矿业技术学院,辽宁葫芦岛 125105

收稿日期:2015-07-07 修回日期:2015-11-27 出版日期:2017-06-08 发布日期:2020-06-04
作者简介:李宗翔(1962-),男,黑龙江绥化,博士,教授,博导,研究方向为煤矿重大灾害理论及灾变时期矿井通风。
基金资助:
国家自然科学基金(51174109,51304112)

Simulation of Coal Flow Movement Process in Coal and Gas Outburst of Roadway Network

Li Zongxiang^1,2, Wang Yadi^1,2, Zhang Chunhua³, Wang Tianming^1,2

1. College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, China;
2. Key Laboratory of Mine Thermodynamic disasters and Control of Ministry of Education, Fuxin 123000, China;
3. Mining Industry Technology College, Liaoning Technical University, Huludao 125105, China

Received:2015-07-07 Revised:2015-11-27 Online:2017-06-08 Published:2020-06-04

摘要/Abstract

摘要： 为提高煤与瓦斯突出灾变过程仿真的准确性,采用时间步长法,描述突出时固相煤岩流在巷道网中运行堆积。按煤岩流“向下优先”规则、以巷道下向倾角正弦值为自变量,构造出煤量分配权重模型,该模型适应下向、近水平和上向3种巷道情况;按塌落模型构造突出煤强度变化。结合九里山矿突出事故案例,仿真煤岩流突入16031运输巷中,止步于2号反向风门前,同时煤岩流解吸出大量瓦斯,形成突出瓦斯源的一部分,在逆流风压的作用下,高浓度瓦斯透过2号风门,被瓦斯传感器监测到。研究表明,考虑煤岩流的仿真计算,能合理地描述煤流巷道瓦斯迅速升高问题。

关键词: 突出煤岩流, 优先权模型, 系统仿真, 时间步长法, 巷道网

Abstract: In order to improve the simulation accuracy of the process in coal and gas outburst disaster period, time step method was put forward to describing the movement and accumulation of coal flow in roadway network when coal and gas outburst happened. Downward dip angles of tunnel were taken as the independent variables, model for distribution weight of coal output was built based on “Downward Priority” principle, and the model could adapt to downward roadway, nearly horizontal roadway and upward roadway. Strength change of outburst coal was established based on the collapse model. Combining with the coal and gas outburst accident and outburst monitoring facts in Jiulishan Coal Mine, process of coal flow movement was simulated, and the process was that coal flow swarmed into haulageway 16301, passing through reverse No. 2 ventilation door and much gas was desorbed and becoming part of the outburst gas source at the same time. Gas of high concentration was monitored by methane sensor when passing through No. 2 ventilation door under the influence of counter current wind pressure. The results show that the rapid rise of gas in roadway could be reasonably described, considering the simulation calculation of coal flow.

Key words: coal flow outburst, priority model, system simulation, time step method, roadway network

中图分类号:

李宗翔, 王雅迪, 张春华, 王天明. 煤与瓦斯突出巷道网中煤岩流运行仿真实现[J]. 系统仿真学报, 2017, 29(6): 1344-1350.

Li Zongxiang, Wang Yadi, Zhang Chunhua, Wang Tianming. Simulation of Coal Flow Movement Process in Coal and Gas Outburst of Roadway Network[J]. Journal of System Simulation, 2017, 29(6): 1344-1350.

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煤与瓦斯突出巷道网中煤岩流运行仿真实现

Simulation of Coal Flow Movement Process in Coal and Gas Outburst of Roadway Network

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