Research On The Connectivity Of Rivers And Lakes And The Construction Of Water Ecological Model Of Coal Mining Subsidence Areas

The subsidence area of coal mining subsidence area in Huaibei area(Huaibei City,Suzhou city and Huainan city)is 747.3km2,only in Huaibei City,the subsidence area of coal mining subsidence area is 412.9km2,and the average depth is 3m~5m,the most deepest water depth is up to 8m ~ 12 m,average water depth increases at a rate of 3% to5% per year.According to the water resources,environmental protection principles,landscape ecological principles and the theory of circular economy,develop and utilizate the coal mining subsidence area,use coal mining subsidence as plain lakes to save rain and flood,research on the connectivity of rivers and lakes and the construction of water ecological model of coal mining subsidence areas,develop and utilizate water resources in the coal mining subsidence area,to alleviate the situation of water resources shortage,improve the regional ecological environment and geological environment,achieve the least harm,the largest benefits,make the resources,environment and economy develop in an all-round way.The topic select Huainan City,Suzhou City and Huaibei City as the study area to research on the connectivity of rivers and lakes and the construction of water ecological model of coal mining subsidence areas,Zhu-Xianzhuang,LulingLuling,Qi’nan,Qidong and Taoyuan mine as the study area to research the connectivity of rivers and lakes connectivity,Zhu-Xianzhuang,LulingLuling mine as the study area to research he construction of water ecological model of coal mining subsidence areas.The main contents include:(1)Investigate and development forecast of coal mining subsidence area.With Huaibei City,Suzhou city and Huainan city coal mining subsidence area and the surrounding river water system as the focus,take the typical investigation and the way of combination of investigation,investigate and collect the basic situation,distribution,subsidence area,volume and characteristics of coal mining subsidence areas,and describe the future of subsidence area,volume and other of these subsidence.(2)Research on the construction of water ecological model of coal mining subsidence areas.In Suzhou city,coal mining subsidence area as the research object,coal mining subsidence areas internal and external communication technical scheme is system analyzed.The maximum water storage in the subsidence area(in flood season and non flood season),the normal water storage level and ecological water level be studied by the method of lake morphology and other methods.Considering the relationship between the river flood water level and subsidence area,the relationship between water diversion in river and water supply in subsidence be studied,water supply and water diversion be calculated.(3)Research on the construction of water ecological model of coal mining subsidence areas.Zhu-Xianzhuang,Luling coal mining subsidence area as the research object,with two similar subsidence areas as a unit system,a comprehensive model of water ecology be put forward,which is with the fuction of breeding type,landscape type and purification type,that is,"water diversion Lake + ecological ditch + water supply Lake" three water ecological model.Through the construction of water ecological model of coal mining subsidence areas,the mode coal mining subsidence area "water impoundment,water supply" of development and utilization be realized.Through the construction of water ecological model of coal mining subsidence areas,"water diversion lake + ecological ditch + water supply lake" three water ecological model be put forward,and ultimately the "water impoundment,water supply,water ecological system" mode of comprehensive utilization of coal mining subsidence area be achieved.It is one of the effective measures to effectively solve the water shortage and pollution reduction in Huaibei area,which is of great significance to improve the ecological environment and human settlements,and has the value of popularization and application in similar coal mining areas.