复合顶板支护技术浅析

通过对五采2#层东部采区原有巷道支护方式的实地检测,结合锚杆、锚索支护机理进行理论分析,合理设计2#层西部采区巷道顶板支护方式和支护参数;分析了复合顶板巷道帮、顶封闭式支护掘进技术效果和经济效益。

深埋冲击区域大跨度岔门顶板复合支护技术

工作面切眼大跨度岔门支护是煤矿顶板管理的重中之重。随着煤矿开采逐步向深部方向发展,受地质构造、采空区、埋藏深度等诸多因素影响,冲击地压危险区域巷道支护条件越来越复杂,给大跨度岔门顶板支护带来了较大难度。结合姚桥煤矿矿井自然条件,在满足冲击地压支护标准的条件下,对工作面切眼大跨度岔门顶板采取了复合支护加固技术,取得了较好的应用效果。

深井高应力复合顶板巷道卸压让压综合支护技术

针对矿井深部开采时由于埋深大,地应力高,导致复合顶板巷道支护困难的实际情况,进行支护技术创新。通过应用卸压技术、超高强让压锚杆支护技术,有效地对复合顶巷道进行支护,具有较好的推广应用前景。

复合顶板巷道支护浅析

根据鸡西矿业集团正阳煤矿五采2#层煤层赋存条件,结合锚杆、锚索支护机理进行理论分析,合理选择2#层煤巷道复合顶板支护方式和支护参数;分析了复合顶板巷道帮、顶封闭式支护掘进技术效果和经济效益。

大采深、复合顶板条件下支护参数的确定

通过对相邻矿井所在3B#层采区所施工巷道的实地检测,结合锚杆、锚索支护机理进行理论分析,合理设计我矿一采深部3B#层采区巷道顶板支护方式和支护参数;分析了复合顶板巷道帮、顶封闭式支护掘进技术效果和经济效益。

大同石炭二叠系C3~#层巷道锚杆锚索联合支护

介绍了大同煤矿集团公司白洞石炭二叠系试验区C3#层准备巷道、回采巷道应用锚杆锚索联合支护的情况,并与传统支护方法进行了比较。

Study of dynamic pressure roadway supporting scheme under condi- tion of thick composite roof

This paper analyzed the strata behaviors of solid-coal roadway, gob-side entry driving and deformation law of surrounding rock in depth under high stress and thick composite roof based on the dynamic pressure roadway as engineering background in Fengcheng mining area, Jiangxi province. The results, both field measurement and numerical simulation show that gob-side entry driving results the deformation of coal roadway main wall, however, entity-coal roadway driving results deformation of main roof and floor. The maintenance state of gob-side entry driving is better than entity-coal roadway, this situation is relevant to thick composite roof layered and easy collapse characteristics. At the same time, this paper put fox＇ward and proved proper dynamic pressure roadway supporting scheme under the surrounding rock condition and stress environment.