基于突变级数法的岩溶塌陷危险性评价  

Evaluation of karst collapse risks based on catastrophe progression method

作　　者：文畅平[1] 陈毅[1] 肖宏彬[1] 白银涌 苏伟[1] 

机构地区：[1]中南林业科技大学土木工程与力学学院,长沙410018

出　　处：《中国科技论文》2016年第13期1539-1543,共5页China Sciencepaper

基　　金：国家自然科学基金资助项目(31270671);湖南省重点学科建设资助项目(2013ZDXK006);中南林业科技大学引进高层次人才科研启动基金资助项目(104-0094)

摘　　要：基于突变理论,采用突变级数法进行岩溶塌陷危险性评价。在相关研究的基础上,选择土的抗剪强度参数黏聚力和内摩擦角、覆盖层厚度、覆盖层厚度减高水位埋深以及覆盖层厚度减低水位埋深等5个影响因素,作为岩溶塌陷危险性判别的评价因子。以15组典型工程案例数据作为训练样本,建立岩溶塌陷危险性评价模型和突变级数判据;利用10组典型工程案例数据作为测试样本,对模型进行检验和优良性评价。研究表明,采用突变级数法对岩溶塌陷危险性的评价结果与实际情况吻合。Based on catastrophe theory, catastrophe progression method for evaluation of Karst collapse risks was presented. Acording to the previous researches, five main factors including soil shearing strength parameter such as cohesion and internal frtion angle, difference of cover thickness and high buried depth of groundwater and difference of cover thickness and low burdepth of groundwater were selected as discrimination factors of Karst collapse risks evaluation Fifteen actual samples of Kacollapse were taken as the training samples, and the catastrophe progression model and the recognition criteria were established predicting Karst collapse risks; the additional ten actual samples of Karst collapse were employed as the testing samples, awere evaluated to verify the fine property of the proposed model and recognition criterion The study shows that the resultsKarst collapse risk evaluation recognized by the catastrophe progression method were same as the practical situation

关 键 词：岩溶塌陷 危险性评价 突变级数法 

分 类 号：P642.25[天文地球—工程地质学]