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    • 3. 发明申请
    • METHOD OF ROOF CONTROL IN AN UNDERGROUND MINE
    • 地下矿山屋顶控制方法
    • WO1996041932A1
    • 1996-12-27
    • PCT/US1996009803
    • 1996-06-07
    • JENNMAR CORPORATIONSTANKUS, John, C.GUO, Song
    • JENNMAR CORPORATION
    • E21D21/00
    • E21F17/185E21C39/00E21D9/14E21D20/00
    • Stresses in an underground mine are determined by analyzing mechanical properties of mine site stratum (Figure 1, numerals 2, 4, 6 and 8) including orthotropic properties of at least one of Young's modules and Poisson's ratio. The mechanical properties of the mine site are combined with a physical layout of the mine that includes one or more of an entry and a pillar arrangement formed in a stratum of material being mined (Figure 1, numeral 10). The physical layout may also include an array of roof bolts in a roof of the mine. A finite element analysis (FEA) (Figure 2) is performed on the combined mechanical properties and physical layout to obtain a stress analysis of the mine site. The stress analysis is analyzed to determine if the layout of the mine is sufficient to provide a desired degree of support while maximizing the removal of material being mined. If the desired degree of support is not provided, the physical layout and/or the array of roof bolts is adjusted and subsequent FEA performed until the desired degree of support is provided.
    • 通过分析矿场地层的机械性能(图1,数字2,4,6和8)来确定地下矿井的应力,包括至少一个杨氏模量和泊松比的正交各向异性。 矿场的机械性能与矿井的物理布局相结合,其中包括形成在开采材料层(图1,数字10)中的一个或多个入口和柱状排列。 物理布局还可以包括在矿山屋顶中的一系列屋顶螺栓。 对组合的机械性能和物理布局进行有限元分析(FEA)(图2),以获得矿场的应力分析。 分析应力分析,以确定矿山的布局是否足以提供所需的支撑度,同时最大限度地移除被开采的材料。 如果没有提供所需的支撑程度,则调整车身螺栓的物理布局和/或阵列,并进行后续的有限元分析,直到提供所需的支撑度。