煤炭与化工2025，Vol.48Issue(4)：36-40,5.DOI:10.19286/j.cnki.cci.2025.04.008
综放工作面末采深孔预注浆加固技术研究
Research on pre-grouting reinforcement technology for deep holes in the final mining of fully mechanized mining face
摘要
Abstract
A deep hole pre-grouting reinforcement scheme for inorganic materials in the final mining area was designed to address issues such as rock fragmentation,difficulty in maintaining the dismantling channel,and safety hazards of polymer chemical slurry during the final mining period of the fully mechanized top coal caving face.A 130m deep hole was constructed in the trench,and two types of inorganic grouting materials,rapid setting early strength and ultra-fine high strength,were selected.The"0-30-130m"segmented grouting process was used for end reinforcement and full length reinforcement,respectively.The industrial test results showed that the segmented grouting process and two materials ensured effective grouting volume,with a maximum grouting volume of 12.6 tons per hole and minimal leakage.After the working face entered the pre grouting reinforcement area,the proportion of blade and roof caving trips was 6.8％,far less than the 56％under non grouting conditions.The dismantling channel was well maintained,and the working face was safely dismantled.The cost of pre grouting inorganic materials was only 38.7％of that of polymer chemical slurry.关键词
末采/撤架通道/分段注浆/无机注浆材料/无机材料预注浆Key words
final mining/demolition channel/segmented grouting/inorganic grouting material/pre-grouting of inorganic materials分类
矿业与冶金引用本文复制引用
胡黎明,王春..综放工作面末采深孔预注浆加固技术研究[J].煤炭与化工,2025,48(4):36-40,5.基金项目
中国博士后科学基金第73批面上资助(2023M733279) （2023M733279）
