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下辽河平原,位于辽宁省中部地区,是第三纪至第四纪阶段新构造垂直运动形成的中新生代断陷盆地,咸水分布区位于新生代断陷盆地的西南部。海相沉积层分布于山前至辽东湾,咸水分布在滨海一带。地下淡水由山前平原向中部平原及咸水分布的滨海平原运动。原生沉积的海相地层中天然形成的咸水运移层,人为的过量开采,破坏了咸淡水平衡界面,导致海水运移(入侵)。掌握下辽河平原的咸水赋存规律及成因,探讨咸淡水过渡带的移动变化特点,合理有效的开发利用淡水资源。
The Lower Liaohe Plain, located in the central region of Liaoning Province, is a Meso-Cenozoic rift basin formed by the new tectonic vertical movement from the Tertiary to Quaternary stages. The saltwater distribution area is located in the southwestern part of the Cenozoic rift basin. Marine sediments are distributed in the mountains before the Liaodong Bay, saltwater distribution in the coastal area. Underground fresh water From the piedmont plain to the plains and salt water distribution of the coastal plains. The naturally occurring saltwater transport layer in the originally deposited marine strata, artificially over-exploited, undermines the equilibrium interface between salt and freshwater and causes seawater to migrate (invade). Grasping the occurrence and causes of saltwater in the Lower Liaohe River Plain, exploring the characteristics of the movement of salt water transitional zone, and developing and utilizing freshwater resources reasonably and effectively.