基于随机-模糊法的岩体风化分带  

Zonation of the Weathering Degree of Rock Mass Based on Random-Fussy Method

作　　者：杨国俊 Yang Guojun(China Railway Design Corporation,Tianjin 300251,China)

机构地区：[1]中国铁路设计集团有限公司,天津300251

出　　处：《铁道勘察》2020年第5期31-34,共4页Railway Investigation and Surveying

基　　金：中国国家铁路集团有限公司科技研究开发计划项目(K2019G031)。

摘　　要：为提高岩体风化分带精度,减小钻探工艺及人为经验等不确定因素的影响,在对以往岩体风化分带方法进行分析研究的基础上,提出一种基于岩体纵波波速比和随机-模糊统计法相结合的风化分带新方法,并将该方法运用于沈阳至白河客运专线某桥址区岩体风化分带中。研究表明,新方法能够很好地反映岩体风化程度,避免钻探工艺及人为经验等不确定因素的影响,不仅实现了风化分带的定量划分,而且能充分顾及岩体密度、完整性、碎裂程度等影响。研究结果表明,该方法适用于岩体完整性、破碎程度以及岩体密度等特征受风化程度影响比较大,并且岩性、构造及水文条件较简单的地层。To improve the precision of weathering zoning of rock mass and reduce the influence of drilling technology,experiences,etc. A new method for zonation of the weathering degree of rock mass based on the longitudinal wave velocity of rock mass and random-fussy statistical method is proposed. The new method is used in the weathering zoning at the geological survey of a bridge in Shenyang-Baihe passenger dedicated line.The results show that the new method can well reflect the degree of the weathering zone,which can avoided the influence of drilling technology,experiences,etc. Through the new method,the quantitative division of weathering zoning is realized,and the influence of rock mass density,integrity and fragmentation degree can be fully considered. The results show that the new method is suitable for formations where characteristics such as rock mass integrity,fragment degree and rock mass density of rock mass are affected by weathering greatly,and the lithology,structure and hydrological conditions are relatively simple.

关 键 词：岩体风化 风化分带 纵波波速 随机-模糊方法 模糊隶属度 

分 类 号：P512.1[天文地球—地质学] TU459.3[建筑科学—岩土工程]