西安地裂缝构造成因机制及地震勘查思路探讨  

Discussion on Tectonic Genesis Mechanism of Ground Fissure and Thought of Seismic Exploration in Xi′an

作　　者：苗康运[1] 冯西杰[2] 汤寒松[1] 胡继武[1] 

机构地区：[1]煤炭科学研究总院西安研究院,西安市710054 [2]陕西省地震局,西安市710068

出　　处：《勘察科学技术》2008年第5期7-10,共4页Site Investigation Science and Technology

摘　　要：西安地裂缝所引起的地面沉降及对地面构造物的破坏在国内外尚属罕见,深入研究其成因机制,探索有效的勘查方法,对西安经济持续发展及地学研究具重要意义。浅层地震是探测西安地裂缝最有效的地球物理勘探方法之一,西安地区地震地质条件较好,但表层风积湿陷性黄土分布广泛,地下水位较深是地震勘查的难点。利用浅层高分辨地震查明的临潼-长安断裂和地裂缝深部构造发育特征,并结合区域地质条件对西安地裂缝构造成因机制及地震勘查思路进行探讨,资料可靠,值得参考。In Xi＇ an city, the surface subsidence and building damage caused by ground fissure are rare at home and abroad. Deep study on their tectonic genesis mechanism and explore an effective method of surveying are important for regional economic sustainable development and geology study. The shallow seismic exploration is one of the most effective geophysical prospecting methods to Xi＇an ground fissure. In Xi＇an area, the seismic geologic conditions are fine, but widely distributed shallow aeolian collapsible loess and deep ground water level bring more difficulties for seismic exploration. Tectonic development features of Lintong - Changan fault and ground fissures in Xi＇an are obtained by shallow high resolution seismic exploration, combined with regional geological condition, its genesis mechanism and thought of seismic exploration are also discussed. The reliable data is worth referring.

关 键 词：地裂缝 同生断层 掀斜作用 次级断层 汾渭地堑 

分 类 号：P631.4[天文地球—地质矿产勘探]