Key Supporting Technologies for Prevention and Control of Road Debris Flow and Natural Disasters in
admin
2022-09-13
西部山区公路泥石流与山河灾害防治关键支撑技术
Key Supporting Technologies for Prevention and Control of Road Debris Flow and Natural Disasters in Western Mountainous Areas
技术编号
XN-122
提供单位
长安大学
技术大类
生态环境保护技术
联系人
崔高峰
技术类型
土壤生态环境改善技术
电话
13022867251
邮箱
无
适用范围
该成果技术难度大,整体达到国际先进水平,在泥石流磨蚀、泥石流冲击荷载频率特性及冲击信号能量分布等方面处于国际领先水平,对于山区公路减灾防灾起到了重要科技支撑作用。研究成果已在我国西部地区得到广泛应用,实施了近千个泥石流与山洪灾害防治新结构示范工程,上万公里的公路沿线山洪泥石流灾害的防治,减灾防灾效益巨大,推广应用前景广阔。
推荐单位
广西东盟技术转移中心
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技术简要说明山洪泥石流一直是我国西部山区公路沿线的重大自然灾害,危害巨大。该成果是团队依托国家自然科学基金等10个国家和省部级科技项目取得系列研究成果的科学集成、提炼与应用实践,是泥石流学科与道路工程学科交叉融合的重大科学问题,属于社会公益类。本成果研发了多种公路泥石流灾害防治新技术,系统构建了公路泥石流与山洪灾害防治技术体系及其优化设计和施工方法;揭示了泥石流冲击与沉积物固结动力特性,提出了泥石流固液分相流速、泥石流冲击力地貌形迹法、防治结构磨蚀速度及磨蚀量计算方法;揭示了沿河公路路基及桥涵破坏力学机制;揭示了坡面泥石流三种演化模式,从指标体系和评价模型两方面,提出了基于GIS技术的公路水毁危险性评价方法。推广应用前景:该成果技术难度大,整体达到国际先进水平,在泥石流磨蚀、泥石流冲击荷载频率特性及冲击信号能量分布等方面处于国际领先水平,对于山区公路减灾防灾起到了重要科技支撑作用。研究成果已在我国西部地区得到广泛应用,实施了近千个泥石流与山洪灾害防治新结构示范工程,上万公里的公路沿线山洪泥石流灾害的防治,减灾防灾效益巨大,推广应用前景广阔。
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Technical Brief DescriptionDebris flow has always been a major natural disaster along the highways in the western mountainous areas of China, causing great damage. This achievement is the scientific integration, refinement and application of a series of research results obtained by the team relying on 10 national and provincial science and technology projects such as the National Natural Science Foundation of China. It is a major scientific issue of cross-integration of debris flow discipline and road engineering discipline, and belongs to the social welfare category. This achievement has developed a variety of new technologies for the prevention and control of road debris flow disasters, and systematically constructed a technical system for the prevention and control of road debris flow and flash flood disaster, as well as its optimized design and construction methods; The dynamic characteristics of debris flow impact and sediment consolidation are revealed, and the calculation methods of debris flow solid-liquid phase separation velocity, debris flow impact geomorphology, erosion rate and erosion amount of prevention and control structures are put forward. The failure mechanism of roadbed and bridge culvert along the river is revealed. It reveals three evolution modes of slope debris flow, and puts forward a risk assessment method of road water damage based on GIS technology from two aspects of index system and evaluation model. Promotion and application prospect: This technology is sophisticated, reaching the international advanced level. It is at the international leading level in debris flow abrasion, debris flow impact load frequency characteristics and impact signal energy distribution, etc., and plays an important role in scientific and technological support for mountain road disaster reduction and prevention. The research results have been widely used in the western region of China, and nearly a thousand new structure demonstration projects for the prevention and control of debris flow and flash flood disaster along tens of thousands of kilometers of highways have been implemented. It has great benefits for disaster reduction and prevention, and has a broad prospect for popularization and application.
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技术提供方长安大学
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技术主要指标信息本成果研发了多种公路泥石流灾害防治新技术,系统构建了公路泥石流与山洪灾害防治技术体系及其优化设计和施工方法;揭示了泥石流冲击与沉积物固结动力特性,提出了泥石流固液分相流速、泥石流冲击力地貌形迹法、防治结构磨蚀速度及磨蚀量计算方法;揭示了沿河公路路基及桥涵破坏力学机制;揭示了坡面泥石流三种演化模式,从指标体系和评价模型两方面,提出了基于GIS技术的公路水毁危险性评价方法。
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技术成熟度正在研发
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