论黄土地质灾害链(一)

On loess geohazards chain (1)

近年来,“西部大开发”、“一带一路”等国家战略在黄土高原陆续实施,这些新型人类营力与水和黄土相互作用,导致黄土灾害链生效应明显,形成了复杂的黄土地质灾害链。作为当前黄土地质灾害领域研究的热点新命题,黄土地质灾害链带来的灾害效应具有隐蔽性更深、影响范围更广、破坏性更强的特点。本文综合考量黄土地质灾害链本身的属性,查清了灾害链的基本类型。根据各个灾种之间演化关系,总结了灾害链的启动模式与演化模式。在此基础上分析了黄土界面与黄土地质灾害链的互馈过程,探讨了灾害链中土体状态变化过程,进一步阐明灾害链的链生演化过程。研究成果有助于加深认识黄土地质灾害链转化模式与演化规律。

With the implementation of major strategy“the development of the western region in China”and“The Belt and Road”has been carried out in the Chinese Loess Plateau.In the combinion between these external factors and water,the loess disasters always occurred one by one,then forming the complex loess geohazards chain.The loess geohazards chain is a hot and new topic in the field of loess disaster research.The disaster effects brought by the loess geohazards chain always charactered by deeper concealment,wider impact,and stronger destructiveness.Comprehensively considering the attributes of the loess geohazards chain itself,we summarized the basic types of loess geohazards chain.According to the characteristic distinctions and initiating connections among these loess disasters,we summarized the mode and chain structure of the loess geohazards chain.On this basis,the mutual feedback process between the loess interface and loess geohazards chain was analyzed.And the change process of soil state and the gradual chain evolution process of the loess geohazards chain were discussed.The results would help to deepen the understanding of the transformation mode and evolution law of the loess geohazards chain.