陕西煤炭2026，Vol.45Issue(8)：14-18,5.DOI:10.20120/j.cnki.issn.1671-749x.2026.0803
不同注浆压力下煤矸石浆液充注性能优化研究
Optimization of coal gangue slurry filling performance under different grouting pressures
摘要
Abstract
As a typical representative of mine solid waste,the resource utilization of coal gangue is of great significance to environmental protection and engineering safety.Grouting technology is the key means of coal gangue filling and reinforcement,and the grouting pressure has an important impact on the grouting performance.Through the method of experimental analysis,this study systematically explored the influence of grouting pressure on slurry diffusion performance,permeability and crack control,solidification performance,fluidity and grouting efficiency,as well as the correlation between formation pressure and grouting pressure.It is found that the grouting pressure has a nonlinear positive correlation with the diffusion radius.When the pressure increases by 0.5 MPa,the diffusion radius increases by 15%～25%on average,and 3.0 MPa is the inflection point of efficiency;There is a pressure threshold of 2.5 MPa for the seepage behavior,beyond which the crack width increases by 20%～30%,and the slurry loss can reach 10%～15%of the total grouting amount;The solidification performance is the best under the pressure of 1.5～2.0 MPa,and the 28 day compressive strength is 12.5mpa;The formation pressure affects the critical grouting pressure,so it is necessary to maintain the pressure difference between 0.8 and 1.2 MPa to balance the diffusion effect and formation stability.关键词
注浆压力/煤矸石浆液/充注性能/地层压力Key words
grouting pressure/coal gangue slurry/filling performance/formation pressure分类
矿业与冶金引用本文复制引用
刘柱,杨洋,杨宁,谢飞,李卫,敖旋峰,王正进..不同注浆压力下煤矸石浆液充注性能优化研究[J].陕西煤炭,2026,45(8):14-18,5.基金项目
贵州省能源局科技榜单项目(贵州渣坪煤业有限责任公司煤矸石井下充填开采技术攻关及试点示范应用) （贵州渣坪煤业有限责任公司煤矸石井下充填开采技术攻关及试点示范应用）
贵州省科技计划项目(黔科统研[2024]379号) （黔科统研[2024]379号）
贵州省科技计划项目(黔科合平台 KXJZ[2024]003) （黔科合平台 KXJZ[2024]003）
