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结合黄石板岩山危岩体防治工程,根据现场地形地貌,为拦截落石和危岩削方爆破飞石,提出以拦石坝为主的三级防护布置方案.以落石和爆破飞石的运动特征为基础,探讨基于落石和爆破飞石计算的拦石土坝设计计算方法.首先计算落石爬坡高度,并以此为依据确定土坝高度,根据能量守恒定律计算土坝平均宽度,从而确定土坝的结构和尺寸.进而对土坝的抗落石冲击力、抗滑移和抗倾覆稳定性进行验算,同时对斜坡在施工和坝体砌筑加载情况下的稳定性进行了验算.
Combining with the prevention and control project of dangerous rock mass in Huangshi Slate Mountain, according to the topographic features of the site, a three-level protection plan was put forward to intercept rockfall and fly rock by blasting, As the basis to discuss the calculation method of the earth-rock dam design based on rockfall and blasting fly-stone calculation.First, the height of rockfall is calculated, the height of earth-rock dam is determined, the average width of earth-dam is calculated according to the law of conservation of energy, The structure and the size of the dam, and then checking the impact resistance, anti-slip and anti-overturning stability of the earth dam, and checking the stability of the slope under the load of construction and dam masonry.