中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (4): 139-144.doi: 10.16265/j.cnki.issn1003-3033.2017.04.025

• 安全工程技术科学 • 上一篇    下一篇

突出过程煤体弹性潜能及其影响因素敏感性分析

戴林超1,2 助理研究员, 文光才1,2 研究员, 孙海涛1,2 研究员, 曹偈1,2   

  1. 1 中煤科工集团重庆研究院有限公司 瓦斯分院,重庆 400037
    2 瓦斯灾害监控与应急技术国家重点实验室,重庆 400037
  • 收稿日期:2016-12-18 修回日期:2017-02-25 发布日期:2020-11-22
  • 作者简介:戴林超 (1987—),男,浙江台州人,硕士,助理研究员,主要从事煤岩动力灾害防治工作研究。E-mail:dailinchao@126.com。
  • 基金资助:
    国家重点研发计划专项资助(2016YFC0801402);国家自然科学基金资助(51574280,51604298); 重庆市基础科学与前沿技术研究专项资助(cstc2015jcyjBX0076)。

Analysis of elastic potential energy of coal in outburst process and its sensitivity to influencing factors

DAI Linchao1,2, WEN Guangcai1,2, SUN Haitao1,2, CAO Jie1,2   

  1. 1 Gas Branch, Chongqing Research Institute Co.,Ltd. of China Coal Technology and Engineering Group, Chongqing 400037, China
    2 State Key Laboratory of the Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing 400037, China
  • Received:2016-12-18 Revised:2017-02-25 Published:2020-11-22

摘要: 为深入研究煤与瓦斯突出过程中煤体弹性潜能的产生机制及演化过程,构建突出煤体弹性潜能计算模型,利用正交试验设计法量化分析弹性潜能各影响因素的敏感性,并基于平顶山十矿己15-24080掘进工作面现场实际情况,探讨掘进进尺与煤体弹性潜能的关系。结果表明,突出过程中煤体弹性潜能对支撑压力集中系数、弹性模量、原始有效地应力的敏感性较大,而对煤体内摩擦角、泊松比的敏感性较小;就十矿己15-24080工作面而言,煤体弹性潜能随着掘进进尺的增加呈现先增大后减小的趋势,当掘进进尺达到4.5 m时,弹性潜能达到最大值。

关键词: 煤与瓦斯突出, 煤体弹性潜能, 影响因素, 敏感性, 正交试验设计, 量化分析

Abstract: In order to study the generation mechanism and evolution of coal elastic potential energy in the process of coal and gas outburst, a coal elastic potential energy computing model was established, and orthogonal experimental design method was used for the quantitative analysis of the sensitivity to influencing factors.On the basis of the actual situation of the heading face Ji15-24080 of No.10 coal mine in Pingdingshan, the relationship between excavation footage and coal elastic potential energy was discussed. The results show that the elastic potential energy is more sensitive to concentration coefficient of the abutment stress, the elastic modulus of coal and original effective stress, while it is less sensitive to the coal internal friction angle and Poisson's ratio,and that the coal elastic potential energy increases first and then decreases with the increasing of the excavation footage for the Ji15-24080 working face, and when the excavation footage reaches 4.5 m, the coal elastic potential energy comes up the maximum value.

Key words: coal and gas outburst, coal elastic potential energy, influencing factors, sensitivity, orthogonal experimental design, quantitative analysis

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