论文部分内容阅读
莱州湾南岸平原在埋深 6 0 m内的浅埋古河道带 ,可分成弥河、潍河和白浪河 3个系统 ,它们大都呈掌状、放射状分布 ,并与其所属河流的冲洪积扇范围相吻合 ,该区古河道的形成和发育是新构造运动和古气候环境演变的结果。自晚更新世晚期以来 ,该区有 4期古河道发育 ,其中玉木早冰期古河道和玉木主冰期古河道的砂体沉积粒度粗、连通性好、分布广 ,既是富水性强、水质好的淡水含水层 ,又是该区海 (咸 )水入侵的主要通道 ,控制在浅埋古河道带超采地下淡水 ,并在丰水季节利用其进行地下水回灌 ,是治理该区海 (咸 )水入侵灾害的重要措施之一。
Shallow paleo-river courses within the south bank of Laizhou Bay within a depth of 600 m can be divided into three systems: Mi River, Wei River and Bailang River. Most of them are palm-shaped and radially distributed, and are closely related to the alluvial fan range of their rivers The formation and development of the ancient channel in this area is the result of neotectonic movement and paleoclimate environment evolution. Since the late Pleistocene, there have been 4 ancient river courses developed in this area. Among them, the ancient river courses in the early Yushu glacial ice and the paleosol in the main ice age of Tamagushi are coarse and coarse, with good connectivity and wide distribution. They are both rich in water and good in water quality Freshwater aquifers are the main channel for the invasion of sea (salty) water in this area. They control the underground fresh water in the shallow ancient river courses and utilize them for groundwater recharge during the wet season. Water invasion disaster one of the important measures.