|
|
|
| Analysis of the Characteristics of Geological Disasters and Its Prevention Methods along the Chengdu-Chongqing Railway |
| SONG Zhang, ZHAO Ping, CHEN Ming-hao |
| (China Railway Eryuan Engineering Group Co. Ltd, Chengdu, Sichuan 610031, China) |
|
|
|
|
Abstract Abstract：Research purposes： The Chengdu-Chongqing railway, which is the first railway in the Southwest region after the founding of new China, has been opened to traffic more than 60 years. At the time, in view of the impact of the national economic and technological power, the construction technical standards are lower and the engineering support and prevention measures are weaker. Influenced by the factors such as the stratum lithology, geological structure, heavy rainfall, and human activities, the geological disasters such as the gravity unfavorable geology, washout and tunnel diseases develop, which impacted on the traffic safety and operation of railway. On the basis of survey, this paper analyzed the characteristics of geological disasters along the railway and its formation mechanism, and discussed the engineering prevention measures to serve the railway engineering. Research conclusions： (1) The geological disasters along the railway include the gravity unfavorable geology of weathering spalling, topsoil slip (landslide), rockfall (avalanche) and boulder, the washout of basal softening, rising soil, blocked drain and culvert, the tunnel diseases of water percolation, spalling and cracking of the top and side of tunnel. (2) The formation mechanism of the emergence and development of geological disasters can be summarized as the interaction of various factors, such as the lower construction technical standards, soft and weak lithology, complex geological structure, abundant rainfall, active groundwater condition and human activities. (3) The governance of the geological disasters should consider the influence on the driving and safety of railway, and engineering support and prevention measures should be efficient, simple and practical. (4) The conclusion of this paper is of guiding significance for the governance of geological disasters along the Chengdu-Chongqing railway.
|
|
Received: 04 July 2017
|
|
|
|
|
|
|
2017, Vol. 34 
