| 覃夏南,张敏,吴明亮,唐灵.广东惠州岩溶分布特征及地质意义[J].矿产勘查,2023,14(12):2288-2300 |
| 广东惠州岩溶分布特征及地质意义 |
| Distribution characteristics and geological significance of karst in Huizhou， Guangdong Province |
| 投稿时间：2023-07-30 修订日期：2023-11-24 |
| DOI：10.20008/j.kckc.202312002 |
| 中文关键词: 岩溶 影响因素 分布特征 广东惠州 |
| 英文关键词: karst influencing factors distribution characteristics Huizhou, Guangdong |
| 基金项目:本文受国家自然科学基金项目（U20A2096）、惠州市财政资金项目（HR2020065、441300-202003-389001-0004）与龙门县财政资金项目（ZZHZCG202004，GXHZ2017005）联合资助。 |
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| 中文摘要: |
| 可溶岩分布区地面塌陷和地面沉降等地质灾害是城市建设面临的重大地质问题之一，同时岩溶含水层利用与保护也是当前的科学研究热点。本文在综合分析区域构造、地层岩性、水文地质条件与岩溶发育关系的基础上，结合现有钻探资料，系统总结了惠州地区的岩溶分布特征和发育规律。结果表明：惠州地区的碳酸盐岩沉积受地层岩性及地质构造和地下水共同控制，有祼露型、覆盖型和浅埋藏型3种类型，以覆盖型和浅埋藏型为主。岩溶发育带分布标高有由北向南逐渐降低的趋势，主要受当地侵蚀基准面控制，强岩溶发育带相对埋藏深度集中在地面以下150 m范围内，并具有多层结构，垂向上岩溶发育带标高主要为-120~+115 m，埋深为0~250 m，主要分为3层，其中溶洞发育埋深介于0~50 m的溶洞占60.2%；发育埋深介于50~100 m占26.6%；发育埋深介于100~150 m占13.2%。研究成果可为惠州地区国土空间规划以及重大工程选址建设、岩溶塌陷防治和岩溶热矿水资源勘查提供科学依据。 |
| 英文摘要: |
| Geological disasters such as ground collapse and ground subsidence in soluble rock distribution area are one of the major geological problems faced by urban construction， and utilization and protection of karst aquifer is also a scientific research hotspot. Based on the comprehensive analysis of the relationship between regional structure， stratigraphic lithology， hydrogeological conditions and karst development， combined with the existing drilling data， the paper systematically summarizes the distribution characteristics and development laws of karst in Huizhou area. The results show that the carbonate deposits in Huizhou area are controlled by lithology， geological structure and groundwater， and there are three types： bare type， covered type and shallow buried type， mainly covered type and shallow buried type. The distribution elevation of the karst development zone gradually decreases from north to south， which is mainly controlled by the local erosion base level. The relative burial depth of the strong karst development zone is concentrated in the range of 150 m below the ground， and has a multi-layer structure. The vertical karst development zone is mainly divided into three layers， with the elevation ranging from -120 m to +115 m and the burial depth ranging from 0 m to 250 m. Among them， 60.2% of karst caves with burial depth between 0 and 50 m were developed. The developmental burial depth between 50 and 100 m accounted for 26.6%； The developmental burial depth between 100 m and 150 m accounted for 13.2%. The research results can provide scientific basis for national space planning， site selection of major projects， karst collapse prevention and control and karst thermal ore water resources exploration in Huizhou. |
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