NEW METHODS FOR PREVENTING AND CONTROLLING DEBRIS FLOW IN YUNNAN PLATEAU UNDER THE NEW DEVELOPMENT CONCEPT
In the past ten years,the prevention and control of debris flow is mainly to solve the problem of protecting people's lives and property.The basic prevention and control measures are the combination of blocking and drainage,and can be discharged,ignoring the use of resources and environmental protection.As the new concept of development takes hold,it is clear that this single approach does not meet the requirements of the new era.In this paper,by summarizing the history,shortcomings and problems of geological disaster prevention and control in Yunnan Province,according to the formation conditions and hazard characteristics of debris flow,the countermeasures and new methods of debris flow prevention and control based on resource utilization and environmental protection under the new development concept are put forward.The basic countermeasures are to implement the systematic prevention and control of the whole disaster chain,improve the prevention and control objectives,reduce water and soil loss,reduce the start and migration of solid matter sources,give consideration to the utilization of sand and stone resources and the development and utilization of land resources,reduce the siltation of rivers and lakes,and avoid the formation of new environmental problems.Prevention and control methods from four aspects,first,the implementation of soil and water conservation projects and special solid projects to slow down the accumulation of debris flow loose material;The second is to stabilize debris flow solid material,control large landslide activities,change"solid bed,blocking,drainage"to"stable source,blocking,fixing,bank protection,silting,dredging,drainage";Third,set up the corresponding engineering measures in combination with the development and utilization of sand and stone materials;The fourth is to combine ecological restoration and land development and utilization,set up corresponding prevention and control projects.
new development conceptdebris flow prevention and controlresource exploitation and utilizationenvironmental protection
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