Study On Landslip Disaster Risk Of Cheng Kun Railway K242-K331

Rockfall disaster is one of the main disasters. It's damage on the railway is so large.Chengdu-Kunming Railway has always been the worst rail disaster which is diverse and complex. Thesis give a field-by-survey on the section of the railway's collapse, rockfall hazard, Chengdu-Kunming railway section K242-K331 background combined with regional geological reports and analyzing the rockfall disaster.Thesis studied the section of railway disaster type, lithology, the degree of risk and the degree of damage. The mainly lithology in the region is limestone and sandstone, so most of the rockfall disaster are tilting rockfall and dislocation type rockfall, as well as more minor slip slope rockfall and the rolling Stones. In the risk evaluation, combined with expert opinion, summed up the region's rockfall geological hazard evaluation system and grading standards. Because the influence of index factor on landslide-induced is different, so the evaluation is not given in the same weight. According to expert experience and the situation on the ground combined with AHP calculated weight of each evaluation factor. With synthetical index method and fuzzy mathematics methods, we analyse rockfall and give the rockfall of geologic hazard evaluation with the rockfall of evaluation indexes. Comparing the two methods of calculation, we obtain the final risk assessment results and the level of risk of rockfall. The results are given for the failure of control measures and safety countermeasures.Thesis presents a variety of effective prevention measures. According to the level of risk of rockfall, we give the most effective and economic control measures, ensuring minimum damage to the railway disaster.