文献类型：期刊文献

英文题名：Study on Borehole Trajectory Deviation Characteristics and Influencing Factors in Three-Soft Coal Seams

作者：Wang, Xiaodong Shang, Yuqi Li, Qingsong He, Lu Wang, Chunhua

第一作者：Wang, Xiaodong

通信作者：Li, QS[1];Li, QS[2];Shang, YQ[3];Li, QS[3]

机构：[1]Guizhou Prov Lab Intelligent Dev & Efficient Utili, Guiyang 550025, Peoples R China;[2]Guizhou Min Safety Sci Res Inst Co Ltd, Guiyang 550025, Peoples R China;[3]Guizhou Res Inst Coal Mine Design Co Ltd, Guiyang 550025, Peoples R China;[4]Guizhou Inst Technol, Sch Min Engn, Guiyang 550003, Peoples R China

第一机构：Guizhou Prov Lab Intelligent Dev & Efficient Utili, Guiyang 550025, Peoples R China

通信机构：corresponding author), Guizhou Prov Lab Intelligent Dev & Efficient Utili, Guiyang 550025, Peoples R China;corresponding author), Guizhou Min Safety Sci Res Inst Co Ltd, Guiyang 550025, Peoples R China;corresponding author), Guizhou Res Inst Coal Mine Design Co Ltd, Guiyang 550025, Peoples R China.

年份：2025

卷号：13

期号：11

外文期刊名：PROCESSES

收录：;EI(收录号：20254819603321);Scopus(收录号：2-s2.0-105022917262);WOS:【SCI-EXPANDED(收录号:WOS:001623824200001)】；

基金：This research was funded by Guizhou Provincial Science and Technology Plan Project (Qiankehe Support 2025 General 027) and Guizhou Provincial Science and Technology Plan Project (Qiankehe Service Enterprise [2022]010).

语种：英文

外文关键词：three-soft outburst coal seams; borehole trajectory; borehole deflection factor; AHP analysis

摘要：The three-soft coal seam, characterized by its soft and fractured lithology, is prone to significant drilling trajectory deviation during construction, severely compromising gas drainage efficiency and posing potential safety hazards. In order to clarify the variation law of the drilling trajectory of the three-soft coal seam, this paper takes the 14205 working face of a mine in Guizhou Province as the engineering background, monitors and analyzes the drilling inclination and the change in the inclination, and then studies the influencing factors of the drilling deviation. During on-site drilling and coring operations and data monitoring, the formation lithology and fragmentation conditions were clarified, and the trajectories of gas drainage drilling holes at 15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees, and 90 degrees were obtained. It was observed that when the hole inclination is 15 degrees or 90 degrees, the change Delta value of the hole inclination is close to 0 degrees. When the hole inclination is 30 degrees or 75 degrees, the change Delta value of the hole inclination is close to 2.5 degrees. When the hole inclination is 45 degrees or 60 degrees, the change Delta value of the borehole inclination angle is close to 4.5 degrees. The curve of the change Delta value of the borehole inclination angle and the borehole inclination angle was obtained by calculation and fitting, and the whole presents a quadratic function distribution. It was inferred that when the inclination angle of the borehole is 50 degrees, the change Delta value of the inclination angle of the borehole reaches the maximum value, which is close to 5 degrees, that is, the deflection of the gas drainage borehole is the largest. With the help of this curve, the deflection was predicted, controlled, and reduced. The AHP analysis model was used to rank the importance of the influencing factors of the borehole trajectory, and it was clear that the main controlling factor of the borehole deflection is the geological factor. This study provides a basis for obtaining the drilling deflection law and determining the appropriate drilling deflection control and correction technology.