龙头山矿段采场结构参数及地压控制数值模拟研究

矿山地下开采过程中,顶板控制对采场地压控制有着直接的影响,分析影响采场围岩稳定性关键因素及破坏机理十分必要。为保证龙头山矿段采场安全、高效开采,运用FLAC3D数值模拟软件对该矿段采场结构进行模拟研究,分别模拟研究了该矿段在空场和切顶条件下的采场结构参数。结果表明:龙头山矿段在空场条件下开采,安全隐患较大,顶板容易发生冒落,形成冲击地压。同时提出合理的采场结构参数与地压控制措施,研究成果为矿山开采选择合理的采场结构参数提供依据。

Numerical simulation of stope structure parameters and ground pressure control in Long Toushan mine

In the underground mining process, roof control has a direct impact on the pressure control of the mining site, it is necessary to analyze the key factors affecting the stability of the surrounding rock of the mining site and the failure mechanism. In order to ensure the safe and efficient mining in Longtoushan mine section, FLAC3D numerical simulation software was used to simulate the mining structure of the mine section, the structural parameters of the stope under the conditions of open stope and roof cutting are simulated and studied respectively. The results show that the Longtoushan mine is mined under open field conditions, which poses a large safety hazard, and the roof is prone to fall, forming an impact ground pressure. At the same time, reasonable stope structure parameters and ground pressure control measures are proposed, the research results provide a basis for selecting reasonable stope structure parameters for mining.