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The magnitude of the estimation method and measures application method determination of the falling rock mass
The magnitude of the estimation method and measures application method determination of the falling rock mass
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机译:落石量的估算方法及措施应用方法确定的大小
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摘要
PROBLEM TO BE SOLVED: To appropriately perform quantitative evaluation of stability for a rock lump in a columnar shape, which is held by a rock bed at the upper end part and has a joint.;SOLUTION: A weathering degree of a rock lump having a columnar shape is set by a joint (step S1), and on the basis of the relation of the weathering degree of the rock lump and a lowering degree of tensile strength of the rock lump, the lowering degree of the tensile strength of the rock lump is derived (step S2). The tensile strength of a sample which is similar to the rock lump and is not weathered is measured. The density of the sample is measured and the density of the sample is defined as the density of the rock lump (step S3). By using the following equation (1), a length in the axial direction of the rock lump falling from a rock bed is calculated (step S5). Le=k×Sp/(ρg×sinθ)...(1), provided that Le: the length in the axial direction of the rock lump falling from the rock bed, k: the lowering degree of the tensile strength of the rock lump, Sp: the tensile strength of the sample, ρ: the density of the rock lump, g: gravity acceleration, and θ: an inclination angle in the axial direction of the rock lump relative to the horizontal direction.;COPYRIGHT: (C)2013,JPO&INPIT
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机译:解决的问题:适当地定量评价圆柱状的块状岩石的稳定性,该块状岩块由上端部分的岩床固定并具有节理。通过接缝设定圆柱形状(步骤S1),并根据岩石块的风化度与岩石块的抗拉强度的降低程度的关系,来确定岩石块的抗拉强度的降低程度。导出(步骤S2)。测量样品的抗拉强度,该样品类似于岩石块并且未风化。测量样品的密度,并将样品的密度定义为块岩的密度(步骤S3)。通过使用以下等式(1),计算出从岩床落下的岩块的轴向的长度(步骤S5)。 Le = k×Sp /(ρg×sinθ)...(1),设Le:从岩层落下的岩块的轴向长度,k:岩石的抗拉强度的降低程度块状度,Sp:样品的抗拉强度,ρ:岩石块状体的密度,g:重力加速度,θ:岩石块状体相对于水平方向的轴向倾斜角; COPYRIGHT:(C )2013年,日本特许厅&INPIT
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