【摘要】 介绍了云南省鹤庆锰业集团小天井矿区急倾斜破碎富锰矿体开采中 ,通过现场地压调查 ,结合三维有限元数值分析、地压的研究方法 ,揭示了采场地压活动规律 ,采取了充填或隔离冒落区、控制回采分层高度、采场控制爆破落矿和由下盘向上盘的回采顺序等采场地压控制技术 ,保证了采场的回采作业安全 ,效果显著。更多还原

【Abstract】 With investigation on the underground pressure in situ and numerical analyses of B-D FEM, this paper describes the activity rules of underground mining pressure in the xiaotianjing′s Mining on break-steeply dipping high-grade manganese ore body of Heqing Manganese Group. taking the controlling teehniques of underground mining pressure such as filling exhausted area for blocking fall zone, control stoping layer heighr, control blasting, and extraction sequence from footwall to hanging wall, stoping safety is assured and remarkable effeets is obtained.更多还原