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巴楚隆起西部剥蚀区先巴扎三维区鹰山组在加里东中期长期暴露地表接受大气淡水淋滤发生岩溶作用。以加里东中期岩溶古地貌为基础,结合精细相干和地震属性分析,对研究区古水系进行精细刻画,类比研究区与西克尔露头的岩溶特征,总结造成这种岩溶特征的成因。研究区地表各水系从干流到分支河谷发育且成熟而稳定,树枝状水系发育,表明该区具有丰富的大气淡水补给和良好的岩性-构造条件,地表岩溶相当发育;而地下水系主要以地表主干水系为排泄基面,其基本围绕地表水系分布且分支少,说明地下水没有形成系统的水文网络,地下岩溶的发育受到一定限制。研究区缺乏良好的径流和排泄系统,岩溶洞穴分布有限,以孤立分散洞穴为主,很少发育大的洞穴或暗河。地下岩溶发育程度低的原因包括岩溶发育不彻底、洞穴充填和溶蚀孔洞层发育。
The Baxu uplift western erosion area Xianbazaza three-dimensional area Yingshan Formation in the Caledonian mid-term long-term exposed surface to accept atmospheric freshwater leaching karstification. Based on the karst paleogeomorphology in the middle of Caledonian, combined with the analysis of fine coherence and seismic attributes, the karst features of the paleo-water system in the study area, the analogy study area and the Sikel outcrop are summarized. The surface water system in the study area developed from the mainstream to the branch valleys and was mature and stable, with dendritic water system developed, indicating that the area is rich in atmospheric freshwater recharge and good lithology-tectonic conditions, and the surface karst developed quite well. However, The main water system is the drainage base, which is basically distributed around the surface water system with few branches, indicating that there is no systematic hydrological network in groundwater and the development of underground karst is limited. The study area lacks a good runoff and drainage system, karst cave distribution is limited to mainly isolated caves, very few large caves or underground rivers. The reasons for the low degree of underground karst development include incomplete karst development, cave filling and dissolution hole development.