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A Dual Tube Auger for Unsaturated Loess Drilling(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2009年第02期
Page:
185-187
Research Field:
水资源与地质工程
Publishing date:

Info

Title:
A Dual Tube Auger for Unsaturated Loess Drilling
Author(s):
LI Tong-lu;  XU Ping;  LI Ping
(School of Geological Engineering and Surveying, Chang'an University, Xi'an 710054, Shaanxi, China)
Keywords:
drilling;  slip zone;  loess landslide;  dual tube auger
PACS:
TU415
DOI:
-
Abstract:
Referring the conventional used hollow stem auger in America, the authors designed a kind of dual tube auger which combines the functions of both the conventional dual tube rock auger and the continuous flight soil auger. With rotation of the drilling rod, the cutter head would cut down the outer ring part of the soil and keep the inner rounded part without disturbing. Meanwhile, the cuttings of the soil outside would go along the flight auger and the soil core inside goes into the inner wall up. The soil cohered on the flight of the outer tube is taken off while the soil core in the inner wall is taken out. The soil core keeps dry and intact. The samples could be used to not only identify the slip zone, but to do the laboratory tests for physical and mechanical properties. In situ drilling tests suggest that the quality of the loess core taken by this auger is much better but it exhausts more power and need more complicated skills than that by conventional methods applied at present in China.

References:

[1] 徐邦栋.滑坡分析与防治[M].北京:中国铁道出版社,2001.
[2] 李 萍,李同录.黄土物理性质与湿陷性的关系及其工程意义[J].工程地质学报,2007,15(4):506-512.
[3] Bas B M. Fundamentals of Geotechnical Engineering[M]. 2nd Edition. Toronto: Thomson Learning, 2003.
[4] 李同录,龙建辉,李新生.黄土滑坡发育类型及其空间预测方法[J].工程地质学报,2007,15(4):500-505.

Memo

Memo:
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Last Update: 2009-06-20