Research On The Development Characteristics And Treatment Engineering Of Elanggou Debris Flow In Jinchuan County Of Sichuan Province

Debris flow is a kind of sudden disaster, short duration, strong ability of natural disasters. Concentrated in West Sichuan area, topographic and geological conditions of complex surface broken, rainy season precipitation, is our country debris flow-prone areas, serious losses. Should strengthen the research on the characteristics of debris flow development, to take positive measures, to achieve the purpose of disaster prevention and reduction.Elanggou debris flow in this paper is located in Jinchuan County of Sichuan Province. In September14,2001,the occurrence of debris flow, which killed8people, destroyed houses, damaged roads, farmland and forest, make the life production paralysis. At present still threatens Mizoguchi residents production and property security, threat of assets of about40000000yuan. In this paper, from the angle of engineering geology, study watershed environment and gully feature of ELang Gou, investigation and analysis of its participation in the distribution of source of debris flow activity characteristics, discusses the regional characteristics of debris flow. According to the fluid nature of the debris flow into the determination of viscous debris flow, debris flow, adopt reasonable calculation method to calculate the velocity, flow movement characteristics and the impact force and dynamic characteristics. ELang debris flow is a typical low-frequency rain gully debris flow. Based on analyzing the development characteristics and movement characteristics of Elang Gou debris flow, combined with the formation mechanism and development characteristics, especially the characteristics of debris flow source starting, distribution of the Mizoguchi protection object, the formation of the "governance ideas and solid row combination", the comprehensive disposal of debris flow. In the main channel of source region downstream from local arrangement suitable a silt-trap dam, stability and provenance, peak runoff; centralized distribution area in the middle reaches of the channel source, arrangement of check dam group, solid bed,reduce the source starting weight, inhibition of the debris flow scale; ELang Gou Mizoguchi as residents concentrated residential areas, is the main object of protection, the channel width is not a flow path, indefinite, the drainage groove effective drainage of debris flow, and is matched with the original building, the debris flow to go along the trough to achieve the purpose of disaster prevention and reduction.