宾格石笼坝治理泥石流的防护效果数值模拟

Numerical simulation of Bingshi gabion dam in debris flow control field

针对当前公路泥石流治理过程中存在的痛点和难点,采用宾格石笼坝进行治理,与传统拦挡坝相比,宾格石笼坝具有整体性和柔韧性好、透水性好、施工简便、造价低、施工周期短、损伤后易于修复等优点,能更好地应用于中小型泥石流治理工程。通过数值模拟研究发现,宾格石笼坝的薄弱点为整体滑移、网箱连接处滑移、网箱连接处承载力不足,在实际工程中应加强石笼连接处的合理处理,这是石笼坝在工程应用中成败的关键点。此外在石笼坝墙后采用短加筋形式,在增加少量成本的情况下,加筋对抗滑和截面强度有明显的提升作用,提高工程安全性。

This paper addresses the pain points and difficulties of the current road debris flow governance process using Binger stone cage dam governance.Compared with the traditional dam,Binger stone cage valley dam has many advantages such as good integrity and flexibility,good permeability,simple construction,low cost,short construction period,and easy to repair after damage.So it is suitable for small and medium-sized debris flow governance projects.Through numerical simulation study,the analysis found that the weaknesses of bing-lattice stone cage dam are 1)overall slip,2)cage joint slip,and 3)low cage joint bearing capacity.Proper treatment of the stone cage joint is the key point of success or failure of stone cage dam in engineering application.In addition,short reinforcement should be applied behind the stone cage dam wall.In this way,at a little increase of the cost,sliding prevention and section strengthening are achieved which will ultimately improve the engineering safety.