Comprehensive Drilling Technology of Deep Hole-Forming for Curtain in Dagangshan Hydropower Station
详细信息
- 责任者：Zhang Mingming (College of Environment and Civil Engineering ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Wei Meng
- 刊名：Exploration Engineering
- 出版年：2013
- 卷期：40(10)
- 关键词：绳索取心 ; wire line coring ; 复杂地层钻进 ; drilling in complicated formation
- 页码：p.39-42
- 图表：1 illus., 3 tables, 7 refs.
- 分类号：2000
- issnNo：ISSN1672-7428
- isbnNo：CN11-5063/TD
摘要
Compared with the traditional core drilling technology by lifting bits, wire-line coring technology can effectively solve the technical difficulties of poor core quality, borehole bending and downhole accidents. According to the drilling technology of hole-forming for curtain at the elevation of 940m on the left bank of Dagangshan hydropower station, the prob- lems in drilling construction are analyzed and effectively solved by process improvement and optimization, the engineering quality is improved with economic benefits.