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| RFA Rock fall Analysis Software Development and Engineering Application |
| WANG Xun1，LI Jian2，SUN Lixun1 |
| 1 .China Railway Eryuan Engineering Group Co. Ltd，Chengdu，Sichuan 610031，China; 2. Emei Branch，Southwest Jiaotong University, Emeishan，Sichuan 614202，China |
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Abstract Research purposes ; As one of the common forms of geological disasters，rockfall is a serious threat to the railway construction and operation safety，so the development of scientific and reasonable design of rockfall becomes one of the important means to reduce the geological disasters. In the aspect of prevention rockfall has formed including survey，stability evaluation，and rock fall motion path and energy calculation，determent the passive fence position setting, selecting the model of defending net internationally，etc. But design system is not perfect in China, software for rockfall trajectory and impact energy calculation is lacked, so developing a software with independent intellectual property rights is imperative.
Research conclusions:(1)Using a random probability within a set range，RFA software can calculate the rockfall trajectory, landing position，the impact energy range and so on. The results can be directly used as the design basis. (2)RFA software can greatly improve rockfall calculation capabilities and work efficiency on the current railway industry.(3)RFA software has been successfully applied to the Dongkeling tunnel exit passages stone design, and achieved good results. It can be used wildly in this field in the future.
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Received: 27 October 2013
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2014, Vol. 31 
