Construction Techniques of Water Curtain Hole of an Underground Water-sealed Cavern

doi:10.3969/j.issn.1001-5485.2014.01.0232014,31(01):114-120

Journal of Changjiang River Scientific Research Institute ›› 2014, Vol. 31 ›› Issue (1): 114-118.DOI: 10.3969/j.issn.1001-5485.2014.01.0232014,31(01):114-120

• Orignal Article • Previous Articles

Construction Techniques of Water Curtain Hole of an Underground Water-sealed Cavern

ZHOU Yong-li¹,SUN Hai-jiang^1,2

1.The Seventh Detachment of Armed Police Hydropower Troops,Wuhan 430223,China;
2.School of Civil Engineering,Shandong University,Jinan 250100,China

Received:2013-09-11 Revised:2014-01-06 Published:2014-01-01 Online:2014-01-01

Abstract

Abstract: The technical requirements of water curtain hole drilling are expounded in this paper. An underground water-sealed cavern with long water-curtain holes and difficult hole drilling quality control is taken as a case study. By analyzing the drilling angle,drilling speed control,bottom deviation of horizontal holes of different lengths,we obtained the factors affecting the drilling accuracy. Meanwhile,we summarized the procedures of water injection test,and the techniques of water decline test,validity checking test as well as water injection during construction.

Key words: water curtain hole, horizontal long-hole drilling, construction technique, water injection test, quality control

CLC Number:

TV554

ZHOU Yong-li¹,SUN Hai-jiang^1,2. Construction Techniques of Water Curtain Hole of an Underground Water-sealed Cavern[J]. Journal of Changjiang River Scientific Research Institute, 2014, 31(1): 114-118.

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Construction Techniques of Water Curtain Hole of an Underground Water-sealed Cavern

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