九寨沟景区荷叶正沟泥石流灾害特征和危险性评估目录第一章前言1.1选题依据及研究意义.......................................11.2泥石流研究发展............................................21.3泥石流分类及形成条件......................................31.3.1泥石流分类............................................31.3.2形成条件..............................................31.4研究内容...................................................41.5研究思路和方法............................................5第二章研究区自然地理和地质条件..............................................................................62.1自然地理条件..............................................62.1.1位置与交通...........................................62.1.2气象、水文............................................72.1.2.1气象特征............................................72.1.2.2水文特征...........................................92.2工程地质条件.............................................102.2.1地形地貌.............................................102.2.2地层岩性..............................................102.2.3地质构造、新构造运动和地震............................122.2.4人类工程活动..........................................162.2.5不良地质作用..........................................16第三章泥石流活动特征..........................................163.1泥石流分区特征............................................173.1.2清水区................................................173.1.2形成流通区及冲淤特征..................................173.1.3堆积区及冲淤特征......................................183.2物源特征..................................................183.2.1物源类型及特征........................................183.2.2动储量确定............................................193.3降雨特征..................................................203.4泥石流活动特征............................................22---本文于网络，仅供参考，勿照抄，如有侵权请联系删除---3.4.1活动历史..............................................223.4.2现状工程评价..........................................233.4.3发展阶段..............................................263.4.4易发程度..............................................293.5泥石流类型................................................333.6泥石流危害方式............................................343.7危害性和发展趋势..........................................343.7.1泥石流活动危险性评估..................................343.7.2泥石流危害性..........................................363.7.3泥石流危险性预测评估..................................363.7.4泥石流发展趋势........................................38第四章泥石流的运动特征定量计算................................394.1泥石流容重确定............................................394.1.1现场试验法...........................................394.1.3不同频率容重计算.....................................404.2泥石流流量及流速计算......................................414.2.1推理公式..............................................414.2.2参数计算取值..........................................414.2.3洪峰流量计算..........................................424.2.4泥石流流量............................................434.2.5一次泥石流总量计算....................................444.3泥石流流速计算............................................46第五章泥石流...