西安地裂缝概况.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,西 安 地 裂 缝 概 况,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 Xian,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24km。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 150km,2,.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 Xian,Geological section along subway No2,Xian city,西安地裂缝剖面结构特征：,Section structure of Xian ground fissures,地裂缝主体倾向南，倾角较陡，一般在70,0,以上。在剖面上的形态一般为上宽下窄的楔形，向下逐渐消失，最深达百余米。主干地裂缝与次级地裂缝在剖面上的组合形式大致概化为以下几种：,西安地裂缝带剖面组合形式图,阶梯状,“y”型,追踪式,Combination section pattern of Xian ground fissures,地裂缝地表断坎的剖面形态：,分为以下3种形态：抑俯型(a)、台阶型(b)和台凹型(c)。实际上反映了地裂缝形成过程中的不同阶段。,The shape of the surface cliff of ground fissure,Up-down type,Step type,Concave type,Maturity type,错断,Q,4,底界,S,0,(1,万年,),0.2m(,埋深,1.5,m,左右,),错断,Q,3,底界,S,1,(12.8,万年,)2m(,埋深,13,m,左右,),错断,Q,2,底界,S,8,(73,万年,)35m(,埋深约,75,m,左右,),0.2m,2m,35m,断距随深度的变化关系,西安地裂缝垂直断错特点,Vertical displacement characteristic,The change of Snap with the depth variation,西影路地裂缝三维变形测量变化曲线图,-0.50,0.00,0.50,1.00,1.50,1,2,3,4,5,6,7,8,9,10,11,12,月,变化量,(mm),降量,扭量,张量,The three dimensional deformation curve of ground fissure at Xiying road,Subsidence,shearing,tension,F11地裂缝交警总队探槽,Sketch of the trench crossing F,11,F,2,地裂缝五金厂探槽,Sketch of the trench crossing F,2,建筑物受损和破坏,The damage of the buildings,道路受损,桥梁受损,桥梁错开,桥面开裂,地下管道破坏,地裂缝错断翠华路供水管道造成突水,地裂缝错断万寿路供水管道造成地面塌陷,Water projecting caused by damage pipeline of water supply,Ground collapse caused by damage pipeline of water supply,水的作用通过断层加剧地裂缝的活动,The water action intense the movement of ground fissure through fault,Geological section subway aong No2,Xian city,西安地裂缝是一种内外动力耦合作用形成的地面变形灾害,Xian ground fissure is one kind of ground deformation disaster caused by coupling action of interior and exterior active force.,The subsidence Isoline map,Xian area,Stable foundation,Upheaval upper mantle,Horizontal compress,extensile,甘,地,块,青,地,南,华,块,汾,渭,盆,地,Amurian,地块,汾渭盆地地裂缝,是一种大区域性的地质灾害，这与汾渭盆地特殊的活动构造背景有关。,汾渭盆地及邻区活动构造图,中国大陆现今地壳水平运动速度场,Active tectonic map of Fenwei basin and surround area,The present velocity field of crust horizontal movement of Chinese continent,The ground fissures developed in Fenwei basin is the regional geological disaster and has relationship with the special active tectonic background.,国土资源大调查项目,（项目编号：200411300025）,西部地区地裂缝地面沉降调查与监测,（分布规律、动态监测、成因机理与防治）,汾渭盆地地裂缝成因机理与大陆动力学,国家自然科学基金重点项目,（项目编号：,40534021,）,（地质背景、成灾动力学）,We are now undertaking three correlation research projects,目前我们正承担二个有机联系的国家课题：,National land resource explore project,Key project of National natural science fund of China,图 e 960107-0701 视向干涉图,图 f 960107-0701垂直形变图,GPS base mark,：陕西省交通职业技术学院,GPS base mark,：西安市南郊清凉寺门口,Large scale model test platform of Changan University,谢 谢,Thanks,