云南营盘山地区岩溶水文地质特征分析

Analysis of Karst Hydrogeological Characteristics in the Yingpanshan Area, Yunnan Province

摘要: 本文通过对云南营盘山地区岩溶发育特征、岩溶水文地质条件及岩溶水系统的研究揭示了营盘山地区的岩溶分布特征、发育形态及其发展规律。研究显示研究区岩溶发育受地层岩性、地质构造、地形地貌和地表水系等因素的显著控制，具有顺层性、不均匀性和垂向分带性的特点。研究区地下水主要为孔隙水、裂隙水和岩溶水，其中以岩溶水为主。地下水主要由大气降水和地表水补给，整体上地下水在背斜北西侧及核部接受补给，向两翼及南东倾伏端径流、汇集，分别以马过河、新庄河为当地排泄基准。研究区划分为四个一级岩溶水系统：永宁坪岩溶水系统、新庄河岩溶水系统、营盘山复式背斜岩溶水系统和马过河岩溶水系统。本文为后续开展岩溶水文地质分析奠定了坚实的数据基础，为铁路工程的设计和施工提供科学依据，确保工程的安全性和经济性，同时促进沿线地区的经济社会发展。

Abstract: In this paper, we analyzed the karst development characteristics, karst hydrogeological conditions and karst water systems in the Yingpanshan area of Yunnan Province, to reveal the karst distribution features, development forms and evolution laws in the Yingpanshan area. Research shows that the karst development in the study area is significantly controlled by factors, such as stratum lithology, geological structure, topography and geomorphology, and surface water systems, and it has the characteristics of bedding, non-uniformity and vertical zonation. The groundwater in the study area mainly consists of pore water, fracture water and karst water, with karst water being the dominant type. Groundwater is mainly replenished by atmospheric precipitation and surface water. Generally, groundwater is replenished in the northwestern flank and core of the anticline, and flows and converges towards the two wings and the southeastern dip end, with Ma Guo River and Xin Zhuang River as the local discharge benchmarks. The study area has been divided into four primary karst water systems: the Yongningping Karst Water System (I), the Xinzhong River Karst Water System (II), the Yingpanshan Complex Anticline Karst Water System (III), and the Maguo River Karst Water System (IV). This paper lays a solid data foundation for subsequent karst hydrogeological analysis, provides a scientific basis for the design and construction of railway projects, ensures the safety and economy of the projects, and promotes the economic and social development.