应变片测试方法在凿岩施工中的应用  

Application of Strain Gages Test Method on Drilling Construction

作　　者：何小平[1,2] 李东明[1,2] 闫杰[1,2] 孙春庆 

机构地区：[1]长沙矿山研究院有限责任公司,湖南长沙410012 [2]湖南有色重型机器有限责任公司,湖南长沙410205

出　　处：《矿业研究与开发》2014年第1期102-104,共3页Mining Research and Development

基　　金：国家"863"计划资助项目(2011AA060402)

摘　　要：通过对潜孔钻机偏钻卡杆机理进行研究分析,确定了偏杆卡死事故发生的预兆,针对这些变化的特性,采用ANSYS对φ89 mm的钻杆进行仿真分析,找出其应力应变的最大处,从而确定应变片的安装位置,进而测试钻杆应变形,感知处理偏钻卡死异常工况。为解决应变片信号的传递及提取问题,还进行了特定钻杆结构的设计,对感应采集的预兆变化数据进行处理与判别分析,对比事先得出的潜孔钻机正常凿岩参数,及时合理地调整潜孔钻机的凿岩参数,有效避免钻杆偏斜卡死事故发生。By studying and analyzing on the deviation and sticking mechanism of down--the--hole drill, the presage of deviation and sticking accident was determined. According to the characteristics of these changes, simulation analysis for drill pipe of Ф 89 mm was put forward by ANSYS so as to find out the maximum stress and strain, determine the in- stallation location of strain gage, test stress and strain and monitor abnormal conditions. In order to solve the transfer ring and extracting problem of strain gage signal, a specific drill pipe structure was designed, and the collected monito- ring da^a were handled and analyzed. After comparing with the normal drilling data in advance, drilling parameters would reasonably and timely be adjusted, effectively avoiding deviation and sticking accidents.

关 键 词：应变片测试 潜孔凿岩机 仿真分析 防偏防卡 

分 类 号：TD421.25[矿业工程—矿山机电]