华南地质2026，Vol.42Issue(2)：269-283,15.DOI:10.3969/j.issn.2097-0013.2026.02.008
永州市零陵区切坡建房分布发育特征及简易治理方案
Distribution and Development Characteristics of House Construction on Cut Slopes and Simple Mitigation Measures in Lingling District,Yongzhou City
摘要
Abstract
[Objective]With economic development and improved land-use efficiency,the practice of building houses on cut slopes in rural areas has become increasingly frequent.Improper construction on cut slopes triggers geological disaster risks,threatening the safety of villagers'lives and property.Therefore,it is necessary to conduct detailed research and risk assessment of house construction on cut slopes,and ultimately propose simple and feasible hazard management solutions.[Methods]Based on the 1∶10,000 geological hazard survey and risk assessment project in Lingling District,Yongzhou City,this study examined 3,233 house construction sites on cut slopes in Lingling District.Eight evaluation indicators were selected:soil and rock type(C1),cut slope height(C2),cut slope gradient(C3),distance between the house and the slope toe(C4),slope deformation characteristics(C5),retaining structures(C6),house structure(C7),and average monthly rainfall from April to August(C8).The Analytic Hierarchy Process(AHP)was used to construct a quantitative risk assessment system for evaluating the risks associated with house construction on cut slopes in Lingling District.[Results]The study identified 2 high-risk sites,798 medium-risk sites,and 2,433 low-risk sites for house construction on cut slopes.By analyzing the distribution patterns and developmental characteristics of these constructions,typical developmental patterns were summarized:high-risk sites correspond to cut slopes with a height≥9 m,gradient≥65°,and a slope toe distance≤1 m;medium-risk sites correspond to soil slopes with a cut slope height of 5-9 m,gradient of 60°-70°,and slope toe distance≤1 m;low-risk sites correspond to slopes with a cut slope height<5 m,gradient≤60°,and slope toe distance>1 m.Four failure modes were identified:sliding-type,tension-type,erosion-type,and composite-type.Targeted simple management solutions suitable for self-construction by villagers were proposed,including retaining walls,interception and drainage ditches,slope cutting and load reduction,and biological treatment.[Conclusions]The risk assessment system for house construction on cut slopes developed in this study is scientifically reliable and can be used for subsequent risk assessment calculations.The proposed simple management solutions for addressing hazards associated with house construction on cut slopes in Lingling District are economically reasonable and technically feasible.They can provide practical guidance for the prevention and control of geological disasters related to rural house construction on cut slopes in Hunan Province and serve as a reference for similar studies in other regions.关键词
切坡建房/地质灾害/风险评估/层次分析法(AHP)/永州市零陵区Key words
house construction on cut slopes/geological hazards/risk assessment/Analytic Hierarchy Process(AHP)/Lingling District of Yongzhou City分类
天文与地球科学引用本文复制引用
廖立平,唐黔,陈中源..永州市零陵区切坡建房分布发育特征及简易治理方案[J].华南地质,2026,42(2):269-283,15.基金项目
湖南省自然资源厅(湘地调[2022]42) （湘地调[2022]42）
