Vol. 44 No. 1 Feb. 2017
矿业安全与环保
MINING SAFETY & ENVIRONMENTAL PROTECTION
第44卷第1期 2017年2月
张春，李集明，程诗两，等，基于遗煤自燃防治的综放工作面合理推进速度的确定[J].矿业安全与环保,2017,44(1)：98-101. 文章编号：1008-4495(2017)010098-04
基于遗煤自燃防治的综放工作面合理推进速度的确定
张春，李集明，程诗禹，高鑫浩，姚立洪
（辽宁工程技术大学安全科学与工程学院，辽宁阜新123000）
摘要：为了研究综放工作面推进速度对采空区遗煤自燃的影响规律，采用理论分析、数值模拟、相似模拟及回归分析等方法，对工作面推进速度与工作面采出率、采空区应力场、孔隙率分布规律、漏风量，以及氧化带宽度的关系进行了研究，得到工作面推进速度与各因素的函数关系，以及工作面推进速度的合理确定方法。分析结果表明：防止遗煤自燃的工作面推进速度存在下限值和上限值，当利用上限值和下限值估算的工作面合理推进速度范图存在并且具有较大变化空间时，再对采出率加以考虑，即可得到有效防止遗煤自燃的合理工作面推进速度；当此范围不存在或范围较小时，说明提高工作面推进速度不能防止遗煤自燃，这时工作面的合理推进速度应主要依据采出率进行确定。工作面推进速度越小，与氧化带宽度的关系曲线越平缓，提高推进速度越有利于防止遗煤自燃。
关键词：工作面推进速度；遗煤自燃；采出率；数值模拟；氧化带
中图分类号：TD75+2.2
文献标志码：B
网络出版时间：2017-02-0718：13
网络出版地址：http：//www.cnki.ne/kcms/detail/50.1062.TD.20170207.1813.032.html
Determination of Reasonable Advancing Speed of Fully Mechanized Top-coal Caving Face
BasedonPreventionandControlof Residual Coal Spontaneous Combustion
ZHANG Chun，LI Jiming，CHENG Shiyu，GAO Xinhao,YAOLihong
(School of Safety Science and Engineering, Liaoning Technical Unitersity, Fuxin I23000, China)
Abstract: In order to study the effect laws of the advancing speed of the working face on the residual coal spontaneous combustion in the gob, study was carried out in this paper on the the relationships of the advancing speed of the working face with the recovery rate, the distribution rule of the stress field and the porosity in the gob, the air leakage and the width of oxidation zone by means of the theoretical analysis, mumerical simulation, similar simulation and regression analysis, the functional relations of the advancing speed of the working face with each factor and the reasonable detemination method for the advancing speed of the working face were obtained. The analysis results showed that the lower limit and upper limit of the advancing speed of the working face existed for the prevention of residual coal spontaneous combustion, when there was a range of the reasonable advancing speed of the working face which was estimated with the lower and upper values, it had a larger changing space and the recovery rate was taken into consideration, the reasonable advancing speed of the working face for the effective prevention of residual coal spontaneous combustion can be obtained; when this range did not exist or was small, it indicated that the increase of the advancing speed of the working face can't prevent the residual coal spontaneous combustion, then the reasonable advancing speed of the working face should be determined by the recovery rate. If the advancing speed was slower and the relation curve with the width of the oxidation was more gentle, the increase of the advancing speed of the working face was more beneficial to the prevention of residual coal spontaneous combustion.
Keywords : advancing speed of working face; residual coal spontaneous combustion; recovery rate; numerical simulation; oxidation zone
收稿日期：201605-04;2016-11-15修订
基金项目：国家自然科学基金项目（51374121,51404131）作者简介：张春（1979一），男，辽宁沈阳人，博士，副教
授，主要从事矿井火灾防治方面的研究工作。E-mail:zhang chun_110@163.com。
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工作面推进速度对采空区遗煤自燃具有较大影响，合理提高工作面推进速度有利于对采空区遗煤自燃的防治，这一点已被实践所证明。国内已有一些矿井采用提高工作面推进速度的方法来防止遗煤自燃，并且取得了较好的效果，如神东矿区采用先进