摘要
为降低煤矿井下随钻测斜仪随钻测量钻孔姿态角参数的误差,建立基于递推最小二乘的误差补偿数学模型,采用椭球拟合法、点积不变法和旋转平面拟合法的联合校正方法对随钻测斜仪进行误差补偿校正。对研发的随钻测斜仪进行数值仿真和双轴转台实验,用联合校正方法对实验数据进行误差补偿校正,校正前俯仰角和方位角的最大绝对误差分别为4.7°和5.1°,校正后为0.8°和0.9°,校正后测量精度满足随钻测斜仪要求。实验结果表明,该方法可以对煤矿井下随钻测斜仪进行有效的误差补偿校正。
In order to reduce the error of measuring the drilling attitude angle parameter of MWD inclinometer in coal mine,a mathematical model of error compensation based on recursive least squares was established,the joint correction method of ellipsoid fitting method,dot product invariance method and rotation plane fitting method were used in the error compensation correction for MWD inclinometer.Numerical simulation experiment and double-axis turntable experiment were carried out on the developed MWD inclinometer,error compensation correction of experimental data was conducted with joint correction method,the maximum absolute errors of pitch angle and azimuth angle before correction are 4.7°and 5.1°,after correction are 0.8°and 0.9°,the corrected measurement accuracy meets the requirements of MWD inclinometer.Experimental results show that this method can be used to effectively compensate the error correction of MWD inclinometer in underground coal mine.
作者
乔美英
王波
肖学军
许城宽
闫书豪
QIAO Meiying;WANG Bo;XIAO Xuejun;XU Chengkuan;YAN Shuhao(School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China;Fourth Geological Team,Hebei Provincial Bureau of Coal Geology,Zhangjiakou 075100,China)
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2020年第2期202-208,共7页
Coal Geology & Exploration
基金
国家自然科学基金项目(61573129)
河南省教育厅重点科研项目(16A120004)。
关键词
煤矿井下随钻测斜仪
联合校正
误差补偿校正
俯仰角
方位角
MWD inclinometer in underground coal mine
joint correction
the error compensation correction
pitch angle
azimuth angle
