In recent years, whenever China has entered the rainy season, there will occur due to heavy rainfall formation of debris flows.This situation has caused a lot of casualties and property losses, such as the 2016 Fujian Taining debris flows killed 34 people were killed in 2010, Gansu Zhouqu large debris flow caused more than a thousand people were killed, so the management and prevention work mudslides become a top priority topographic and geologic complicated area.Mudslides have erupted suddenly, the impact energy, destructive and other characteristics, but also by the influence of topography, geology and rainfall and other complex situations, the higher strength requirements of the management project.In recent years, commonly used in slope engineering Piles of debris flow structure is widely used in project management, since the debris flow impact of dynamic load, with its stress patterns different in slope engineering, since the cost of piles higher in the actual project often requires common use with other ancillary works.Piles of debris flow Landang paper as a research object, setting the pile retaining wall model, in conjunction with a flexible mesh, gabion placed during simulated debris flow impact chute Pile Wall, by arranging the rear of the model in piles pressure sensors to analysis of the forces piles and piles of integrated Landang effect, the effect of drainage and dam siltation conduct research.Research conclused:①The effect in the model experiment pile wall is prefect, most of the large volume of solid material can be stopped.②Set the gabion and flexible net in the rear piles of debris flow can be effectively reduce the impact of piles, drainage effect gabion network has its own advantages and flexibility, flexible network is better compared to the gabion, Georgia Bin compared to more effective flexible network can reduce the impact of debris flow in.③Piles is easy to form the rear vortex of dam foundation caused serious erosion.④When the silt behind the dam is full of the solid matter, it will be blocked drainage channels, drainage measures should be strengthened.%近年来,每当我国进入雨季后都会有由于强降雨形成的泥石流灾害的出现;这种情况已经造成了大量的人员伤亡和财产损失,例如2016年福建泰宁泥石流灾害造成34人遇难,2010年甘肃舟曲特大型泥石流造成了千余人遇难;因此对泥石流的治理和防范工作成为了地形地质复杂地区的重中之重.泥石流具有爆发突然、冲击能量大、破坏性强等特点,又受地形、地质以及降雨情况等复杂情况的影响,对治理工程的强度要求较高.近年来,常用于边坡工程中的桩板墙结构被广泛的应用于泥石流治理工程中,由于泥石流冲击力为动荷载,其受力模式与在边坡工程中截然不同由于桩板墙造价较高,在实际工程中往往需要配合其它附属工程共同使用.以桩板墙泥石流拦挡结构为研究对象,设置了桩板墙模型,同时配合柔性网、格宾,放置在溜槽中模拟泥石流冲击桩板墙的过程,通过布置在桩板墙模型后部的压力传感器来分析桩板墙的受力情况;并综合桩板墙的拦挡效果、排水效果和坝后淤积等情况进行研究.得到:①在模型试验中桩板墙的拦挡效果良好,可以将大部分体积较大的固体物质拦下.②在桩板墙后部设置格宾和柔性网均可以有效降低泥石流对桩板墙的冲击力,格宾和柔性网各有优点,柔性网的排水效果相较于格宾要好,格宾相较于柔性网可以更有效的降低泥石流的冲击力.③桩板墙后部易形成漩涡,对坝后地基造成严重的侵蚀.④当坝后淤满固体物质后,会将排水通道堵塞,应当加强排水措施.
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