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黄河流域重要河道采砂管理规划综述

     

摘要

黄河是多泥沙河流,但泥沙地区分布不均,各河段河道演变与泥沙补给条件不尽相同,能直接用于建筑的砂石比较少,存在非法开采砂石现象,威胁防洪安全。为实现科学、可控、有序管理,研究提出了采砂控制总量、禁采区范围、可采区范围、可采区控制开采高程、禁采期、采砂作业条件、保留区范围、保留区转化条件等采砂管理控制性指标。在维护河势稳定,保障防洪安全、航运安全和供水安全,满足生态环境保护要求的前提下,在规划范围贵德至循化、兰州、宁夏至黄河入海口干流河段和湟水、清水河、窟野河等12条支流以及东平湖老湖区内,划定禁止采砂的禁采区81个,允许砂石开采的可采区301个,保留区178个。提出黄河流域干流禹门口以上河段和支流、湖区建筑用年度采砂控制总量为6824万t,并提出了采砂保障措施及能力建设方案。%The Yellow River is a sediment⁃laden river. Due to uneven distribution of sediment, the river channel evolution and sediment supply condition is not the same in different reaches, and the sand used directly for building is very less. The phenomenon of illegal sand excavation is threat to flood control safety. In order to realize scientific, orderly and controllable management, the control indexes of sand excavation management were studied including total amount control of sand excavation, range of forbidden area and permitted area, control excavated elevation of permitted area, forbidden period, working condition of sand excavation, range of preserve area, and transformation condition of preserve area. On the promise of maintaining the stability of river regime, ensuring flood control safety, navigation security and safety water supply and meeting the requirement of ecological environment protection, the planning range was divided into 81 forbidden areas, 301 permitted areas and 178 preserve areas in the main stream of Guide to Xunhua, Lanzhou, Ningxia to the Yellow River mouth area, and 12 tributaries including Huangshui, Qingshui, Kuye, as well as the old area of Dongping lake. The annual total amount control of sand excavation in the area upstream of Yumenkou and sand for building in the lake region is 68.24 million tons, moreover, safeguard measures and capacity building scheme for sand excavation was proposed.

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