西安科技大学学报2025，Vol.45Issue(5)：973-982,10.DOI:10.13800/j.cnki.xakjdxxb.2025.0513
不同力学加卸载下构造煤组合体的渗透特征
Permeability characteristics of tectonic coal combination under different mechanical loading-unloading conditions
摘要
Abstract
Aiming at the problem that tectonic development affects gas seepage in coal seams of high gas mines,based on the occurrence characteristics of coal seams in a high-gas mine located in the Xin-jiang Uygur Autonomous Region,seven sets of tectonic coal combination specimens with different pro-portions of tectonic coal thickness were designed.Permeability tests were conducted on these tectonic coal combination specimens during triaxial loading.By controlling the variations of axial pressure,confi-ning pressure and gas pressure,the permeability characteristics were analyzed.The results show that the permeability of both the whole-primary coal specimens and the tectonic coal combination specimens is reduced with the increase of axial pressure,confining pressure and gas pressure,and the higher the pro-portion of tectonic coal thickness,the slower the rate of permeability decline.As axial pressure,confi-ning pressure,and gas pressure increased,the permeability loss rates for both specimen types exhibited an increasing trend.During axial and confining pressure loading,the permeability loss rate for tectonic coal combination showed a sustained upward trajectory.The maximum increase in permeability loss rate of axial pressure on tectonic coal specimens is 30.81％,while the maximum increase in permeability loss rate of confining pressure is 42.66％,which is significantly higher than that of axial pressure.Un-der the same stress-loading conditions,the permeability loss rates of whole-primary coal specimens are lower than those of whole-tectonic coal specimens,the sensitivity of whole-tectonic coal specimens to stress action is more pronounced.The research results can provide a theoretical reference for relief gas drainage under mining-induced pressure and the prevention and control of mine gas disasters.关键词
构造煤组合体/三轴加载/渗透率/力学加载环境/气体压力Key words
tectonic coal combination/triaxial loading/permeability/mechanical loading environment/gas pressure分类
矿业与冶金引用本文复制引用
雷雯,赵鹏翔,刘元嘉,李树刚,赵坤,裴文博..不同力学加卸载下构造煤组合体的渗透特征[J].西安科技大学学报,2025,45(5):973-982,10.基金项目
新疆维吾尔自治区重点研发任务专项项目(2022B01034-3) （2022B01034-3）
国家自然科学基金项目(52174205) （52174205）
陕西省重点研发项目(2024GX-YBXM-490) （2024GX-YBXM-490）
新疆煤炭资源绿色开采教育部重点实验室开放课题(KLXGY-KA2404) （KLXGY-KA2404）
陕西省杰出青年科学基金项目(2023-JC-JQ-40) （2023-JC-JQ-40）
