青海高原高寒地区生态环境修复治理中的水系连通技术

Hydrographic Net Connection Technology in Qinghai Plateau Frigid Zone Entironmental Rehabilitation Governance

木里矿区处于黄河流域上游高原高寒地区,生态环境脆弱,水源涵养功能极为重要。以往煤矿露天的开采产生了一系列生态环境问题,其中水系湿地破坏是主要问题之一,造成了大量的采坑积水,影响了矿区的水源涵养功能。在矿区生态修复治理中,基于对矿区水文地质条件的分析,通过对采坑积水分布特征、水质监测和积水形成规律的研究,结合采坑、渣山地形地貌特征,因地制宜,提出了针对采坑积水修复治理的水系连通方法,分别为积水整治形成高原湖泊和引水代填,通过水系连通,模拟自然地表水系状态,实现了经济高效地河湖一体化修复治理,为逐步恢复木里地区水源涵养和生态系统功能打下了基础。

The Muri coalfield is situated on a plateau frigid zone,upper stretches of the Yellow River.The area has a fragile entironment,consequently,water source conservation function is vitally important.Previous surface coal mining has caused a series of entironmental problems,one of principal problem is hydrographic net system water-logged land destruction causedsubstantialpit ponding impacted mine area water source conservation function.Entironmental rehabilitation governance in mine area is based on hydrogeological condition analysis,through pit ponding distribution features,water quality monitoring and ponding formation pattern researches,combined with pit,waste rock dump topographic features,according to local conditionsconsidering pit ponding rehabilitation governance have proposed hydrographic net connection methods for ponding governance formed plateau lakes and water diversion filling respectively.Through hydrographic net connection has simulated natural surface water system status,realized rivers and lakes integrated rehabilitation.Economic and efficient rehabilitation governance has laid a foundation for water source conservation and ecosystem function rehabilitation in Muri coalfield step by step.