钻探工程2025，Vol.52Issue(2)：151-159,9.DOI:10.12143/j.ztgc.2025.02.020
超长水平定向预注浆钻孔施工技术探讨
Discussion on technology of ultra-long horizontal directional pre-grouting borehole construction
王义红 1杨增智 1邵东梅 1王朝阳 1李龙标 1常喜顺 1陈晓君2
作者信息
- 1. 陕西太合智能钻探有限公司,陕西 西安 710086
- 2. 中国地质科学院勘探技术研究所,河北 廊坊 065000
- 折叠
摘要
Abstract
A wide range of fracture zones and water-rich areas commonly exist along the axis of the tunnel in the long and deep buried tunnels of water conservancy projects,the management of pre-grouting by more than 1000 meters of ground horizontal directional drilling can achieve a good effect of the surrounding rock reinforcement and gushing water blocking,which has been a successful attempt in the water conservancy industry.This paper introduces the successful experience of drilling ultra-long horizontal directional pre-grouting holes with screw drilling tools in a project.The difficulties and problems are discussed such as cutting removal,coping with the problem of"back pressure",measurement while drilling system in strong magnetic field,measures of green exploration,as well as the insufficient adaptability of drill,low efficiency of hard-rock drilling,and the influence of grouting on drilling operation,etc.,and the contermeasures are also posed.4 main holes and 6 branch holes were constructed,along which the longest hole is 1427m,and the drilling workload is 8737.89m.The implementation of the project proves that the current directional drilling technology has the ability to drill accurately over long distances,which can provide a guarantee for the pre-grouting and ahead-treatment in the complex strata of the ultra-long tunnels and the related drilling projects.关键词
定向钻探/超长水平钻孔/螺杆钻具/复合钻进/钻孔轨迹/预注浆/深埋隧洞Key words
directional drilling/ultra-long horizontal drilling/screw drilling tools/compound drilling/drilling trajectory/pre-grouting/deeply buried tunnel分类
天文与地球科学引用本文复制引用
王义红,杨增智,邵东梅,王朝阳,李龙标,常喜顺,陈晓君..超长水平定向预注浆钻孔施工技术探讨[J].钻探工程,2025,52(2):151-159,9.
