煤层增透与顶板弱化聚能爆破技术研究

发布时间：2018-05-08 21:53

本文选题：煤矿 + 瓦斯抽放　；参考：《中国矿业大学（北京）》2014年博士论文

【摘要】：本文从聚能装药聚能效应出发,对煤岩聚能爆破致裂机理进行研究,分析了聚能爆破过程、爆破裂隙起裂扩展条件以及爆破裂隙分区特征。同时对聚能爆破炸药的安全性和爆破作业环境隐患进行分析,将聚能爆破施工工艺划分为选址、打钻、装药、封孔、起爆5个步骤,针对施工过程中可能出现的事故采取相应的安全技术措施,保证现场试验的顺利进行。以通化矿业(集团)有限责任公司松树煤矿为试验区,对矿井瓦斯地质规律进行研究,分析了地质构造、煤层赋存、瓦斯抽放概况、煤与瓦斯突出特征及地质原因。在此基础上将深孔聚能爆破应用于低透气性煤层增透和坚硬难垮落顶板弱化,设计了试验方案并顺利进行了现场试验。结果表明,聚能爆破煤层增透作用显著,而且为解决坚硬难垮落顶板大面积悬顶提供了技术和方法,保证了工作面安全生产。
[Abstract]:In this paper, based on the accumulative energy effect of charged charge, the mechanism of coalbed explosive fracturing is studied, and the process of explosive blasting, the conditions of crack initiation and propagation and the characteristics of blasting crack zoning are analyzed. At the same time, the safety of shaped explosive and the hidden danger of blasting working environment are analyzed. The construction technology of shaped blasting is divided into five steps: site selection, drilling, charging, sealing hole and initiating blasting. According to the possible accidents in the construction process, the corresponding safety technical measures are taken to ensure the smooth progress of the field test. Taking Songshu Coal Mine of Tonghua Mining (Group) Co., Ltd as the experimental area, this paper studies the gas geological law of the mine, and analyzes the geological structure, the occurrence of coal seam, the general situation of gas drainage, the characteristics of coal and gas outburst and the geological reasons. On the basis of this, the deep hole shaped energy blasting is applied to the low permeability coal seam and the hard and difficult roof is weakened. The test scheme is designed and the field test is carried out successfully. The results show that the anti-reflection effect of coalbed with shaped blasting is obvious, and the technology and method are provided for solving the problem of hard and difficult roof overhanging, and the safety of working face is ensured.
【学位授予单位】：中国矿业大学（北京）
【学位级别】：博士
【学位授予年份】：2014
【分类号】：TD235;TD712.6

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