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一、前言1981年秋季,陕西南部一带连降暴雨,遭受了百年不遇的洪涝灾害,随之而产生的滑坡、泥石流,给国家财产和人民生命造成重大损失。据风县、留坝、略阳、宁强等县的不完全统计,共发生滑坡、泥石流约2万处,规模大者约3,000处,摧毁房屋1.6万多间,死亡人数占洪涝灾害死亡人数的46%,经济损失达11亿元以上。党中央对灾区人民十分关心,派出了以杨静仁副总理为首的中央慰问团对灾区人民进行慰问和视查,同时派有关单位的科研人员对灾区的滑坡、泥石流进行了调查。本文即是在陕西省地质矿产局第一水文地质队对凤县、留坝、略阳等县灾区进行野外调查的基础上,经过综合分析研究后撰写的,着重探讨滑坡、泥石流的形成条件及防治措施。
I. Introduction In the fall of 1981, heavy rains sustained downfall in the south of Shaanxi Province, which suffered a rare flood disaster in a century, resulting in landslides and mudslides that caused heavy losses to state property and people’s lives. According to the incomplete statistics of Fengxian County, Luba County, Lueyang County and Ningqiang County, landslides and mudslides occurred in about 20000 places, with a large scale of about 3,000 and destroying more than 16,000 houses, accounting for the death toll of floods and droughts Of the 46%, economic losses of more than 1.1 billion. The Central Committee of the Party is very concerned about the people in the disaster-stricken areas. It sent a delegation of condolences headed by Vice Prime Minister Yang Jingren to the people in the affected areas for their condolences and inspections. At the same time, researchers from relevant departments were sent to investigate the landslides and debris flows in the affected areas. This article is based on the field investigation of the first hydrogeological team of Shaanxi Bureau of Geology and Mineral Resources on the disaster areas of Fengxian, Liuba, Lueyang and other counties after comprehensive analysis and study, focusing on the formation conditions of landslide and debris flow and Prevention.