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Risk Factor Analysis and Risk Evaluation on Railroad Bed in Landslide District in Southwestern Mountainous Area

Author: LiZuo
Tutor: ZuoDeYuan
School: Southwest Jiaotong University
Course: Road and Railway Engineering
Keywords: Mountains of southwest Landslide Roadbed Risk Factors Fuzzy Comprehensive Evaluation AHP
CLC: U213.1
Type: Master's thesis
Year: 2011
Downloads: 47
Quote: 0
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Abstract


Landslide (landslide) refers to a part or whole on the slopes of the rock mass under gravity or other external force along the weak side as a whole or part of the downward slide of geological disasters . The southwest mountain landslide distribution of a wide range of a considerable part of the railway through the landslide lot and landslides caused huge losses . Carry out risk assessment of landslide subgrade engineering , take corresponding risk response measures LANDSLIDE , can greatly reduce the engineering accidents and save investment , timely roadbed engineering risk assessment system is very urgent. Firstly, on the southwest mountain landslide lots railway roadbed major risk event study to analyze the impact on the safety of the railway transport of various risk events , to evaluate the level of risk level . For specific risk events , the right to study the impact of factors are significant and small , and to provide guidance for the subsequent investigation, design and construction . Secondly, the improvement of the Analytic Hierarchy Process (AHP) and expert scoring method are combined , the focus of research in the risk factors under a risk event the right major and small size , and then combined with the likelihood of the risk factors come spawned risk the events of the main risk factors . Same time , the use of fuzzy comprehensive evaluation method to evaluate for a risk event , come to the level of risk which risk factors and risk Countermeasures . Through the establishment of a few simple landslide model , this article the use Lizheng geotechnical software analysis the landslide thrust of cohesion , internal friction angle , safety factor , soil bulk density indicators change sensitivity . To VC as a platform for the preparation of the mountains of southwest the railway embankment risk factors weights calculated risk assessment software , used to calculate the weight of risk factors , as well as to evaluate the risk event , so that the risk factors for weight calculation and evaluation more convenient .

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CLC: > Transportation > Rail transport > Railway Line Project > Line constructed > Subgrade
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