[an error occurred while processing this directive] Global Geology 2014, 17(1) 48-54 DOI:     ISSN: 1673-9736 CN: 22-1371/P

本期目录 | 下期目录 | 过刊浏览 | 高级检索                                                            [打印本页]   [关闭]
论文
扩展功能
本文信息
Supporting info
PDF(519KB)
[HTML全文]
参考文献[PDF]
参考文献
服务与反馈
把本文推荐给朋友
加入我的书架
加入引用管理器
引用本文
Email Alert
文章反馈
浏览反馈信息
本文关键词相关文章
 
本文作者相关文章
HONG Jialin
Pavel Talalay and Mikhail Sysoev
PubMed
Article by Hong J
Article by Pavel TAMS
 
 
 
摘要:  
关键词    
Optimization of ice cuttings transportation by cable-suspended core auger drills
HONG Jialin, Pavel Talalay and Mikhail Sysoev
Polar Research Center,Jilin University,Changchun 130026,China
Abstract:

Ice cores contain an abundance of information about the Earth's climate in the past,and recovered from shallow drilling down to 300--350 m give sufficient information for reconstructing of the last climatic chan- ges and for monitoring of pollution from human being. Cable-suspended core auger drills use an armored cable with a winch to provide power to the down-hole motor system and to retrieve the down-hole unit. Because of their lightweight,convenient transportation and installation,high penetration rates and low power consumption, core auger drills are widely used for shallow drilling in ice. Nowadays at least 14 types of auger electromechani- cal drills were designed and tested in different foreign and national glaciological laboratories. However,auger options were usually determined by experience,and the main parameters (helix angle of the fights and rotational speed) are varied in a wide range from drill to drill. If parameters of auger are not chosen properly,poorly en- gineered drills had troubles with low efficiency of cuttings transportation,jam of ice cuttings,repeated fragmen- tation,cutters icing and stop penetration,abnormal power consumption,high rotation torques,and so on. Thus,this paper presents the method of optimization of ice cuttings transportation of cable-suspended core auger drill on the base of the theory of rotary auger. As the result,the optimal helix angle was determined correspond- ing to the rotational speed from the transportation efficiency point of view.

Keywords: auger drill   transportation of cuttings   efficiency of transportation  
收稿日期  修回日期  网络版发布日期  
DOI:
基金项目:

 

通讯作者:
作者简介:
作者Email:

参考文献:
 
本刊中的类似文章
1.. [J]. Global Geology, 2024,27(4): 207-215
2.. [J]. Global Geology, 2024,27(4): 177-195
3.. [J]. Global Geology, 2024,27(4): 196-206
4.. [J]. Global Geology, 2024,27(4): 216-232
5.. [J]. Global Geology, 2024,27(3): 167-176
6.. [J]. Global Geology, 2024,27(3): 145-153
7.. [J]. Global Geology, 2024,27(3): 154-166
8.. [J]. Global Geology, 2024,27(3): 121-131
9.. [J]. Global Geology, 2024,27(3): 132-144
10.. [J]. Global Geology, 2024,27(2): 105-120
11.. [J]. Global Geology, 2024,27(2): 63-75
12.. [J]. Global Geology, 2024,27(2): 93-104
13.. [J]. Global Geology, 2024,27(2): 76-92
14.. [J]. Global Geology, 2024,27(1): 35-42
15.. [J]. Global Geology, 2024,27(1): 20-34

Copyright by Global Geology