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一、前言 一九八四年我队开展贵州省瓮福磷化基地供水水文地质普查以来,在瓮安南部至牛场间,多次对米洞进行踏勘和专门调查(图1)。 米洞发育在下三叠统茅草铺组第一段(T_1m~1)石灰岩层中,洞穴规模庞大,形态变化奇特,洞内堆积物十分发育;竖井溶洞、漏斗和落水洞、裂隙及地下河管道系统纵横交错,在区内构成一幅多层复杂的岩溶洞穴和堆积物空间分布图(图2)。
I. Preface Since 1984, when the team carried out the survey on water supply hydrogeology of Wengfu Phosphate Base in Guizhou Province, we conducted extensive reconnaissance and special surveys on the rice caves in the south of Weng’an to the cattle farm (Figure 1). The Mi-dong is developed in the limestone layer of the first section (T_1m ~ 1) of the Lower Triassic Maocaopu Formation. The cave has a large scale and peculiar morphology, and the deposits in the cave are well-developed. The cave caves, funnels and sink holes, fissures and underground river pipes The system is criss-crossed, forming a multi-layer spatial distribution of karst caves and deposits in the area (Figure 2).