煤矿井下定向钻孔轨迹计算与误差分析  

Trajectory Calculation and Error Analysis of Mine Directional Drilling

作　　者：黄寒静 

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710077

出　　处：《煤矿安全》2014年第1期132-135,共4页Safety in Coal Mines

基　　金："十二五"国家科技重大专项基金资助项目(2011ZX05040-001-004)

摘　　要：煤矿井下随钻测量定向钻进技术由于能够精确控制钻孔轨迹,目前得到广泛应用。针对钻孔轨迹的测量方法和测量误差问题,介绍了定向钻孔轨迹的计算方法,分析了钻孔轨迹误差产生的主要原因以及造成的影响,通过提高仪器测量精度、校正子午线收敛角、准确计量孔深以及降低磁干扰等措施,可以减少误差,提高钻孔轨迹精确度。Directional drilling technology of measurement while drilling is widely used in underground coal mine for drilling trajectory controllability. According to the measurement method of drilling trajectory and measurement error, this paper introduces the calculation method of directional drilling trajectory, than analyzes the reasons of measurement error and effects. Some measures can be taken to re- duce the influence and to improve measurement precision of borehole trajectory, such as improving instrument precision, regulating grid convergence angle, accurate metering hole depth and reducing magnetic interference.

关 键 词：定向钻孔 随钻测量 轨迹计算 三维坐标 误差分析 

分 类 号：TD842[矿业工程—煤矿开采]