[中英]西安地裂缝概况.ppt

* Overview of Xian Ground fissure 汾渭盆地是我国新构造活动剧烈、活动形式复杂的关键地区：Weihe basin is the key area of new tectonic intensively movement . 大同盆地剖面图 太原盆地剖面图 临汾盆地剖面图 渭河盆地剖面图 盆地持续伸展变形 盆内次级块体差异运动显著 盆缘及盆内活动断层活动强烈 地质灾害十分发育 Sustainable extensive deformation Notable secondary block differential movement Intensively movement of active fault Well developed geological disaster 汾渭盆地是中国地裂缝灾害最发育的地区，迄今已发现地裂缝400余条，尤以西安、大同、临汾、运城等地最为典型和强烈。 Fenwei basin is the area of that ground fissure disaster most developed .Up to now, there are more than 400 pieces of ground fissures have been found, especially the city of Xi’an, Datong, Linfeng, Yuncheng are the most typical and intensively movement area. 大同地裂缝 大同地区活断层 Active fault in the area of Datong city ground fissure in the area of Datong city 榆 次 地 裂 缝 分 布 图 Ground fissure distribution in area of Yuci city 太 速 运 高 太原清徐县地裂缝分布图 Ground fissure distribution in area of Qingxu county, Taiyuan 万荣变电站地裂缝 地坪挤压隆起 山西盆地南段地裂缝分布图 Ground fissure distribution in the south part of Fenwei basin Ground fissure of Wanrong exchange power station Upheaval of ground surface by compression F1 F2 三原地裂缝分布图 Ground fissure distribution in area of Sanyuan county Sketch map of trench 地裂缝平面展布特征 Distribution character of ground fissure in Sanyuan 西安城郊区目前发现的13条地裂缝，均分布在黄土梁洼地貌范围内。地裂缝出露总长度103km，单条地裂缝出露最长11.38km，最短2～4km。地裂缝向东西两侧延伸，东过浐河，西到皂河边。 There are 13 pieces of ground fissures developed in the urban area f of Xian at present. All fissures distributed within the loess ridge and depression region, the area is about 150km2. Total length of ground fissures is about 103km , the longest one is about 11.38km, the shortest one about 2km. The fissures extend towards the east, stretching over the Chanhe river. The fissures also towards the west, reaching the bank of Zaohe river . 西 安 地 区 构 造 地 貌 图 Tectonic and morphological map of Xi’an Geological section along subway No2, Xi’an city 西安地裂缝剖面结构特征： Section structure of Xi’an ground fissures