松动爆破技术在综采工作面压架处理中的应用

发布时间：2018-04-13 00:34

本文选题：松动爆破 + 支架压死　；参考：《煤炭科学技术》2017年08期

【摘要】：为解决支架压死事故中爆破参数的计算和应用问题,以钱家营矿1295工作面的具体地质条件为研究背景,采用理论分析、数值模拟和现场效果监测相结合的方法,对松动爆破技术在处理工作面支架压死事故中的实际应用效果进行研究。结果表明:采用松动爆破技术能够显著降低工作面压死支架所受到的顶板压力,工作面支架在实施松动爆破后可以依靠自身的支撑压力重新支撑起上覆岩层。在研究炸药爆轰作用过程中,FLAC~(3D)数值模拟软件表现出较高的应用价值,其通过在模型上施加动载荷,观测动载荷对模型的影响,探究了松动爆破参数的可行性及适应性;工程应用结果表明,采用松动爆破技术后顶板压力显著降低,同时,大幅减少了挖底和挑顶的工作量,减轻了工人劳动强度。
[Abstract]:In order to solve the problem of calculation and application of blasting parameters in support crushing death accident, taking the concrete geological conditions of 1295 face in Qianjiaying Mine as the research background, the method of combining theoretical analysis, numerical simulation and field effect monitoring is adopted.This paper studies the practical application effect of loosening blasting technology in dealing with death accident of working face support.The results show that the roof pressure of the working face dead support can be significantly reduced by using loose blasting technology, and the roof overburden can be resupported by the support pressure of the working face after the implementation of the loosening blasting.The numerical simulation software of FLACU / 3D shows high application value in studying the detonation process of explosives. By applying dynamic load to the model, the influence of dynamic load on the model is observed, and the feasibility and adaptability of the parameters of loose blasting are explored.The engineering application results show that the roof pressure is significantly reduced by using loose blasting technology, and the workload of digging bottom and roof lifting is greatly reduced, and the labor intensity of workers is reduced.
【作者单位】：开滦集团有限公司钱家营矿业分公司;尤洛卡(山东)环境工程有限公司;
【分类号】：TD355.4

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