用户名: 密码: 验证码:
Research on Sampling Technology for Dalinuoer Lake Environmental Scientific Drilling in Winter
详细信息   
摘要


     With the case of environmental sampling drilling in Dalinuoer Lake in Inner Mongolia, according to the accurate and original in dimension and state samples obtaining and the drilling efficiency, the paper introduces the selection and the optional improvement of drilling tools; analyzes and discusses the static pressure, hammer beating and cable drilling of piston drilling tool with evaluation. By the drilling and sampling characteristics of the piston drilling tool, the cable drilling and alternative sampling in double boreholes are optimized. In comparison to the above both ways, by simultaneously using piston and cable drilling, more accurate and original samples can be extract with higher efficiency.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700