The Analysis Of Xi'an Ground Fissures Problems (Investigation)

Xi'an ground fissures have been the main environment geological disaster in Xi'an city, its research has for decades, with the deepening of the research work, the study, many new progress also appeared to study and solve some new problems. Based on reference Xi'an subway along the ground fissures, survey and part of the project site ground cracks on the basis of investigation data with their practical engineering experience, through the analysis of the problems, puts forward some views on the ground fissures.First, based on "Specification for site investigation and engineering design on Xi'an ground fractures "(DBJ61-6-2006), the author believes that the second field exploration of hole spacing is greater than 4m, three kinds of field exploration hole spacing is greater than 10m for regulating the investigation in Xi'an, improve the ground fissures interpretation accuracy is reasonable and necessary. But when according to the site conditions determined to crack a drilling section with oblique relations, hole spacing can enlarge exploration.Secondly, through practice proved the "Specification for site investigation and engineering design on Xi'an ground fractures " procedures prescribed in the geological hazards distance can effectively avoid the bad influence of the building. However, with the growing shortage of land resources, fully take the geological hazards measures will bring huge waste. Therefore, the only reasonable measures to crack site to use, can achieve the purpose of rational utilization of land resources.Again, the selection of the Xi'an along the ground fissures, survey and metro field survey data in part on the ground fissures, both sides to crack stratum thickness and underground water were summarized data calculation. Some cracks on the plate thickness is Great Wall symbol in the same depth, three sites within the scope of soil on the plate thickness is big, the wall of underground water is footwall higher phenomenon.Finally, through the typical section of the different representations zonetie fracture analysis of crack and the drawing of a certain understanding, specific representations for future research work in the ground fissures in the survey.