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The Development Condition and Section Structure Characteristic of Xi’an Ground Fissures

Author: ShiMing
Tutor: PengJianBing
School: Chang'an University
Course: Geological Engineering
Keywords: Xi'an ground fissures Strip chart Development status Profile characteristics Active
CLC: P642.26
Type: Master's thesis
Year: 2009
Downloads: 149
Quote: 2
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Abstract


Since the 1950s , since the the ground fissures activities on the phenomenon of the destruction of the building , the crack has reached as many as 14 places found in Xi'an , one of the major geological disasters against the construction of Xi'an City . Xi'an ground fissures development status , the cross-sectional structure and activity commenced a comprehensive and in-depth research , not only on the ground fissures in Xi'an further in-depth study of the premise and foundation , and for the better to grasp the new dynamics of the development of Xi'an ground fissures , new features, and even timely guidance to the development of Xi'an planning have some reference and guidance role . By field survey visits and collected data , draw a planar distribution of cracks in the Figure , engineering geological profile , cross-sectional view of the trenches , real photos , and other content , including a single ground fissures strip chart easy to do three-dimensional integrated Xi'an ground fissures research . Xi'an ground fissure plane along the the loess beam to NEE the trend into with development , with Lintong one Chang'an fault strike the original cracks along the strike extends to the ends , the secondary cracks generally located in the south of the main crack , cracks opposite tendency main ; ground cracks dislocation formation breaking distance increase with increasing depth , and has some of the characteristics the south dipping south of the main crack drop synsedimentary fault characteristics , in which the stress field of primary and secondary cracks typical combination of form, indirectly reflects cracks ; ground fissure reduce the intensity of over-exploitation of groundwater and weakened , and shows the characteristics of tectonic fractures activities , overall activity intensity eastern still strong in the west, south , stronger than the north . Xi'an ground fissures in the exhibit such regularity , clearly visible to its development and distribution is controlled by regional tectonism , excessive pumping of underground pressure water is a major predisposing factor for its extraordinary activities .

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CLC: > Astronomy,Earth Sciences > Geology > Hydrogeology and Engineering Geology > Engineering Geology > The geological and engineering geological > Land subsidence
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