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经对日本福冈县阿波罗山国有林地降雨引起的 31处滑坡的统计分析表明 ,每处滑坡的平均面积 91m2 ,平均泥沙量 98m3;就坡面坡度和形状比而言 ,滑坡发生的相对累积频率呈正态分布 ;就滑坡的面积和泥沙沉积量而言 ,滑坡发生的相对累积频率呈对数正态分布 ;93 5 %的滑坡发生在修建道路时形成的人工挖方或填方坡段 ,挖方坡比填方坡更易发生滑坡。 4 2 %的滑坡发生在凹坡 ,32 %发生在直坡 ,2 6 %发生在凸坡。径流流经地表裂隙两次以上的地点 ,引发滑坡危险性更大 ,发生频率达 4 5 2 %。
Based on the statistical analysis of 31 landslides caused by rainfall in the State Forest of Mount Apollo in Fukuoka, Japan, the average area of each landslide is 91m2 and the average sediment amount is 98m3. The relative accumulation of landslides in terms of slope gradient and shape ratio The frequency is normally distributed. For the landslide area and sediment deposition, the relative cumulative frequency of landslides shows a lognormal distribution. 93.5% of the landslides occurred in the artificial excavation or fill slope sections , Slope excavation slope more prone to landslide. 4 2% of the landslides occur in the concave slope, 32% in the straight slope, and 26% in the convex slope. Runoff through the surface fissures more than twice the location, causing a greater risk of landslides, the frequency of 452%.