反井钻导孔偏离量测量方法研究  

Study on Method for Measuring Deviation of Guide Hole with Raise Boring

作　　者：秦连乐 陈小攀 Qin Lianle;Chen Xiaopan

机构地区：[1]河南天池抽水蓄能有限公司,河南南阳473000

出　　处：《吉林水利》2020年第11期44-49,54,共7页Jilin Water Resources

摘　　要：本文提出了一种基于磁场基本原理测量反井钻导孔偏离方向及偏移量的新技术。即在反井钻导孔偏离出渣洞时,在导孔内放置人工磁源装置作为干扰源,重新构建该区域的空间磁场,利用磁场测量仪测量放置人工磁源装置前后周围环境的磁场强度值,再通过数学算法计算导孔内部人工磁源装置的空间位置坐标,从而确定导孔偏离方向及偏离量。现场试验表明,一定范围内测量精度可以满足施工需要。This paper proposes a new technology,based on the basic principle of magnetic field,to measure the deviation direction and offset of raise drilling pilot hole.First,an artificial magnetic source device is placed in the pilot hole as an interference source when the pilot hole of the raise-drilling hole deviates from the slag hole to reconstruct the spatial magnetic field of the area.Then a magnetic field measuring instrument is used to measure the strength of the magnetic field around the artificial magnetic source device.Finally,the spatial position coordinates of the artificial magnetic source device inside the guide hole are calculated by mathematical algorithms,and also the deviation direction and amount of the guide hole are determined.Field tests show that the measurement accuracy within a certain range can meet the needs of construction.

关 键 词：导孔偏离量 人工磁源 磁场测量仪 磁场分布 

分 类 号：TV554[水利工程—水利水电工程]