浅埋煤层综采工作面采空区自燃危险区域判定技术

发布时间：2018-02-15 05:54

本文关键词： 综采面浅埋煤层自燃危险区域导水裂隙数值模拟　出处：《煤矿安全》2015年01期 　论文类型：期刊论文

【摘要】：为了解决浅埋煤层大采高综采面漏风严重,采空区自燃危险区域范围难以判定的问题。以柠条塔煤矿N1201综采面为例,采用采动裂隙相似模拟实验、SF6气体漏风通道检测技术、采空区两道预埋束管监测技术以及Fluent数值模拟等多种监测和应用手段,综合分析浅埋煤层大采高综采面采空区自燃危险区域。研究结果认为综采面因漏风严重,采空区距离工作面5~500m以深的采空区均属于自燃危险区域范围,尤其是2个顺槽的自燃危险性更大;同时也证明了采用多种监测技术相结合的方法判定浅埋煤层综采面采空区自燃危险区域范围的正确性。
[Abstract]:In order to solve the problem of serious air leakage in fully mechanized face of large mining height in shallow coal seam and the difficulty in determining the range of dangerous area of spontaneous combustion in goaf, taking the fully mechanized face N1201 of Caragana Coal Mine as an example, this paper adopts the similar simulation experiment of mining fissures to detect the air leakage channel of SF _ 6 gas. In this paper, two pre-buried beam tube monitoring techniques and Fluent numerical simulation in goaf are used to comprehensively analyze the spontaneous combustion danger area in the goaf with large mining height in shallow coal seam. The results show that the wind leakage is serious in the fully mechanized coal face. The goaf with a depth of 5 ~ 500m from the working face belongs to the danger area of spontaneous combustion, especially the danger of spontaneous combustion of two trenches. At the same time, it is proved that the range of spontaneous combustion danger area in goaf of fully mechanized coal face in shallow coal seam can be determined by the method of combining many kinds of monitoring techniques.
【作者单位】：煤炭科学技术研究院有限公司安全分院;煤炭资源高效开采与洁净利用国家重点实验室;西安科技大学;山西蓝焰煤层气工程研究有限责任公司;
【基金】：煤炭科学技术研究院科技发展基金资助项目(2014JC06) 中国煤炭科工集团科技创新基金资助项目(2012MS001)
【分类号】：TD752.2

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