文献类型：期刊文献

英文题名：Optimization of drilling parameters for coal seam gas extraction considering fluid-solid coupling and field application

作者：Yang, Wang Mengtang, Xu Dezhong, Kong Yuqi, Shang Fei, Li

第一作者：Yang, Wang

通信作者：Dezhong, K[1];Mengtang, X[2]

机构：[1]Guizhou Univ, Coll Min, Guiyang 550025, Peoples R China;[2]Guizhou Inst Technol, Sch Min Engn, Guiyang 550003, Peoples R China

第一机构：Guizhou Univ, Coll Min, Guiyang 550025, Peoples R China

通信机构：corresponding author), Guizhou Univ, Coll Min, Guiyang 550025, Peoples R China;corresponding author), Guizhou Inst Technol, Sch Min Engn, Guiyang 550003, Peoples R China.|贵州理工学院矿业工程学院;贵州理工学院;

年份：2024

外文期刊名：ENERGY SCIENCE & ENGINEERING

收录：;EI(收录号：20240215363840);Scopus(收录号：2-s2.0-85181695702);WOS:【SCI-EXPANDED(收录号:WOS:001138735200001)】；

基金：Science and Technology Support Program of Guizhou Province, Grant/Award Number: Qiankehe Support[2021] General 351; Qiankehe Platform Talents, Grant/Award Number: (GCC[2023] 056); National Natural Science Foundation of China, Grant/Award Numbers: 52164002, 52164005, 52104123; Guizhou Provincial Department of Education 2023 Annual College Science and Technology Innovation Team, Grant/Award Number:(Guizhou Education Technology[2023]055)

语种：英文

外文关键词：fluid-solid coupling; gas extraction; gray correlation analysis; numerical simulation

摘要：Affect gas extraction efficiency to find out the optimum well location parameters, based on the gray correlation analysis of borehole diameter, borehole spacing, and extraction pressure three boreholes parameters that influence efficiency of gas extraction from the design of orthogonal experiment, using COMSOL simulate the effective radius of extraction under different experiments, and the effective radius of extraction for optimizing index quantitative gas extraction efficiency. The results showed that: factors affecting the gas extraction efficiency of the correlation between high and low aperture drilling, borehole spacing, and extraction from extraction negative pressure, it is concluded that the influence parameters of optimal layout parameter values, respectively, borehole diameter 8 cm and 3 m borehole spacing, extraction pressure 50 kPa, combined with the numerical simulation analysis using the optimal layout of gas drilling extraction from about 30 days. The decrease in gas pressure is about 45%, which basically meets the extraction standard, and the decreasing trend of gas pressure is obviously slowed down when the extraction time is longer than 30 days. The engineering experiment is carried out in the 9306 transport lane of a mine in Guizhou Province, and the results are basically consistent with the simulation results, which verify the rationality of the gray correlation analysis method to optimize the drilling parameters, and provide a theoretical basis for the optimization of drilling parameters. By establishing a fluid-structure coupling model and using numerical simulation and gray correlation analysis to optimize the drilling parameters that affect the efficiency of gas extraction, this paper obtains the best parameter value of drilling layout, and applies it to coal mine engineering. The optimized drilling can effectively reduce the volume fraction of gas.image