| Frequently occurring in mountain valley or sloping field, debris flow is one kind of solid-liquid two-phase flow which containing a mass of sand block and bowlder. It has many characteristics such as breaking out abruptly, time brevity, vigor ferocity, and fast calamity etc. Now it bas become one of the most active surface dynamic physiognomy processes. Mountain Highway along with mountain wiring, and the road grades were generally low, low-intensity targets, when the encounter debris strikes, the phenomenon of frequent unstable roadbed. Therefore, how systematic analysis of mudslides on mountain roads along the river embankment failure mechanism, as well as, the protection of their major research paper based content protection will be roadbed debris from the technical content to the design and construction of a systematic study and structural innovation, the formation of complete systems, summing up the complete treatment program for the actual design and construction provide for reference.In conclusion, previous research papers based on the results, mainly for the following aspects of work:1. Summary of mountain road along the river formed by mud-rock flow and the formation of the specific environmental conditions. There are three major sides: 1.abounding provenance 2.enough water 3.steep terrain. Mountain mountainous, and the weathered serious, and thus accumulate a large number of loose earth and rock; along the road alignment along the river, the river in the summer growth, abundant rainfall for debris flow generation provides a source of water; the mountains of trenches, debris flow easily along the groove down, potential energy into kinetic energy, in order to provide a significant impact debris flow provide the impetus.2. Summarize model of debris flow started, and put forward three kinds of mud-rock flow startup type: 1.rainfall intensity of the impact of start-up 2.attenuation of start-up 3.erosion cutting start-up. And were given three kinds of startup type of the relevant calculation formula of the impact of performance than the actual rainfall and critical performance ratio between the size of the stability index, the actual volume and the critical depth of cut a relationship to these three cases to determine whether the debris flow be able to start.3. Mudslides on mountain roads along the river from the impact of two aspects of abrasion damage on the highway roadbed research. Proposed solid-liquid two-phase flow characteristics of debris flow, according to Newton's second law is derived debris flow two-phase formula for calculating impact force and impact time of calculation. Summary curve horizontal gradient, bend circulation, scour depth three aspects of the corners roadbed destruction of river erosion causes; mudslides cut the role of solid rock, liquid slurry abrasive role is to dig brush debris eroded roadbed The two major factors; heavy rainfall, groundwater seepage caused roadbed strength decline; river characteristics, mud-rock flow erosion, roadbed to reduce its strength in three areas along the river is a mountain highway roadbed damage cause damage.4. Tianshan Road, K630 by debris flow impact model to experiment with the size of the debris impact, and solid compared to the increase of increasing the flow rate decreases and the impact the change will increase with the law and has been given hypothesis verification; using finite element software ADINA impact of erosion on the embankment, roadbed failure process simulation, to clarify the mechanism riverside roadbed damage.5. Proposes to use waste tires as debris dam energy dissipation materials, reduce the debris flow impact, so that debris dams are protection, reducing maintenance costs. And the use of discarded tires, has a good effect of energy consumption, less pollution, waste utilization of the advantages, it is worth in the future prevention and treatment of the structure of a large number of applications.
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