人们都期望在不搅乱溪流自然环境的前提下，研究出一种在泥石流多发地段确实能对其进行有效防治的建筑物。曾采用过的用钢管制的透过型坝来防治泥石流已有２０多年的历史。起初，对自然环境的保护意识低，只考虑了能期望拦住泥石流龙头巨石以及在泥石流发生时维护贮沙库容。后? People all hope that under the premise of not disturbing the natural environment of streams, it is possible to find a building that can effectively prevent and treat it in areas where debris flow is frequent. It has been more than 20 years since it was used to control the debris flow through steel dam. Initially, there was only a low awareness of the protection of the natural environment. Only the need to stop the debris-laden boulders and the maintenance of sediment storage capacity at the time of the debris flow was considered. Rear?