煤矿井下巷道梳状定向钻孔轨迹设计方法

发布时间：2018-01-28 19:10

本文关键词： 瓦斯抽采梳状定向长钻孔钻孔轨迹设计斜平面法掘进工作面　出处：《煤矿安全》2017年01期 　论文类型：期刊论文

【摘要】：为了快速有效抽采松软煤层掘进巷道围岩瓦斯,结合定向千米钻机性能,提出采用梳状定向长钻孔"横向"或"纵向"布置方式远距离掩护预抽掘进巷道围岩煤体瓦斯。根据掘进工作面特征,按梳状定向长钻孔设计流程,总结出钻孔轨迹设计原则,并借鉴定向井设计与计算理论,提出三段式斜平面法设计梳状定向长钻孔,明确了钻孔轨迹空间位置的点、线、面之间的关系,简化优化钻孔轨迹设计参数,降低钻孔施工风险。最后以余吾煤矿某掘进巷道为例,详细介绍了斜平面设计方法,分析表明三段式斜平面设计梳状定向钻孔的方法满足工程精度,减少了设计工作量,提高了工作效率。
[Abstract]:In order to quickly and effectively extract the surrounding rock gas of roadway driving in soft coal seam, combined with the performance of directional kilometer drilling machine. According to the characteristics of heading face, the paper puts forward the design flow of long comb directional long hole according to the characteristics of driving face, and puts forward the way of "transverse" or "longitudinal" arrangement of long drilling hole in long direction for long distance and long distance shield pre-drainage of coal body gas in surrounding rock of roadway roadway. The principle of borehole trajectory design is summarized and the design and calculation theory of directional well is used for reference. A three-section inclined plane method is proposed to design comb directional long borehole, and the relationship among the points, lines and surfaces of the borehole trajectory is clarified. This paper simplifies and optimizes the parameters of borehole trajectory design and reduces the risk of drilling construction. Finally, taking a tunneling roadway in Yuwu coal mine as an example, the design method of inclined plane is introduced in detail. The analysis shows that the three-section inclined plane design comb directional drilling method can meet the engineering precision, reduce the design workload and improve the work efficiency.
【作者单位】：太原理工大学矿业工程学院;潞安集团余吾煤业有限责任公司;
【分类号】：TD712.6
【正文快照】： 钻孔抽采瓦斯是煤矿井下防治瓦斯灾害事故,实现瓦斯综合治理与利用的根本措施[1]。随着钻探设备、技术的不断创新发展,定向长钻孔工艺广泛应用于煤矿瓦斯治理体系、异常地质体勘探和探放水工程等[2]。针对松软煤层顺煤层瓦斯抽采钻孔成孔率低、距离短等难题,姚宁平等[3-6]提出

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