大柳塔煤矿沿空留巷柔模砼墙支护阻力核定及失稳判据研究OA北大核心
Study on the determination of support resistance and instability criteria for flexible concrete wall support in gob-side entry retaining at Daliuta Coal Mine
柔模砼墙沿空留巷工作面覆岩垮落结构与砼墙的稳定性是留巷成功与否的关键.以大柳塔煤矿52606工作面为研究对象,通过相似材料模拟实验发现在52605工作面和52606工作面回采结束后,砼墙上方覆岩垮落呈短悬臂梁结构,且砼墙侧垮落角均大于煤壁侧垮落角,二次采动后2个工作面裂隙贯通向地表发育,砼墙上方地面出现略微沉降.针对上述情况,通过分析覆岩垮落结构特征,确定了沿空巷道顶板第1次断裂位置位于采空区上方充填体一侧,第2次断裂位置位于采空区形成悬臂梁结构…查看全部>>
The stability of the gob-side entry retaining with flexible concrete walls and the collapse structure of the overburden above the working face are key factors that determine the success of entry retaining.Taking the 52606 working face at Daliuta Coal Mine as the research object,a similar material simulation experiment was conducted.The results showed that after mining the 52605 and 52606 working faces,the overburden above the concrete wall collapsed into a s…查看全部>>
李刚;刘航;迟国铭;石占山;范永君
辽宁工程技术大学矿业学院,辽宁阜新 123000辽宁工程技术大学矿业学院,辽宁阜新 123000辽宁工程技术大学矿业学院,辽宁阜新 123000||国能神东煤炭集团有限责任公司大柳塔煤矿,陕西神木 719315辽宁工程技术大学矿业学院,辽宁阜新 123000辽宁工程技术大学矿业学院,辽宁阜新 123000
矿山工程
沿空留巷柔模砼墙砼墙安全系数门式支架采动阶段覆岩运移规律支护阻力
gob-side entry retainingflexible concrete wallconcrete wall safety factorportal supportmining stageoverburden movement patternsupport resistance
《工矿自动化》 2025 (1)
145-155,11
国家自然科学基金资助项目(52174077,5200418).
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