| Chen-Lan railroad lies in Sichuan province and Gansu province in China where have steep mountains, deep valleys, complex terrain, and vulnerable natural environment. This line also cut across Minjiang fault zone and West qinling fault zone and Longmenshan fault zone where’5.12’earthquake happened.In those fault zones, The lithology is complicated and tectonic conditions is complicated. Both internal and external dynamics are intense there. Due to several earthquakes and large amount of geological disasters induced by those, large-scale landslides, talus, avalanche, debris flow and other geological disasters happened frequently along the railroad. Thus, the hazard evaluation and efficient management to those geological disasters can provide informative supports to prevention and control of the disasters as well as route selection.By collecting and investigating environmental historic materials, this thesis takes analysis the factors and selects the evaluation indicators affecting the disasters based on the ground truth of disasters in Chen-Lan railroad. The Matter-Element evaluation model to weigh the hazard of disasters is constructed based on the Matter-Element analysis. Then the evaluation of hazard of secondary geological disasters is also presented and those results is visualized by GIS with its powerful ability in displaying.The details in design and development of information management system concerning regional geological disasters are discussed here. This system takes advantage of database techniques and secondary development techniques in GIS. The implement of visualization of regional geological disasters information, searching and management improve the efficiency of information management in geological disasters. |
PDF Full Text Request