The Pumped Storage Powerstation Residues Disposal Area Arrangemnt And Protection Research

Pumped storage power station pumped water to the upper reservoir using power whenthe power load was low, and released water to the lower reservoir hydropower station in orderto generate electricity power on the power load peak. The pumped storage power station wasgenerally consisted of the upper reservoir, the lower reservoir, water power generation systemand ancillary works et al. The location selection of the station was based on the similar naturalrivers and lakes, and the terrain of that was qualified with the reservoir formation condition,using the artificially built reservoir or rebuilding the existing reservoir as the pumped storagepower station reservoir. Because of the huge project, a large number of earth-rock excavationand material mining works will be constructed, and lots of waste mucks will be producedinevitable. That not only will increased the project cost, but also will caused serious soil andwater loess influencing the engineering safe operation and the environment, if the wastemucks were not dumped and fenced reasonably. Therefore, the location arrangement andprotective measures of the pumped storage power station dreg field was an important contentof the project designing and construction.This paper take the Guangdong Meizhou pumped storage power station first-stageproject as the research object, analyzing the operating characteristics and the source andcomposition of the waste mucks during the construction process. According the landform,geological, weather, hydrologic, soil, vegetation conditions and the soil and water loss currentsituation of the area, a deep analysis of the source and amount of the water mucks of theGuangdong Meizhou pumped storage power station first-stage project was made. And thepossibility soil and water loss type and harm that will caused by the waste mucks was studied.Based on the requirement of the related laws, regulations and standards, the arrangement ofthe power station dreg field was designed and studied, and the protection measures systemwas raised. The main conclusions were listed as follow.(1) The construction of pumped storage power station dam foundation and slopeengineering involving hubs, yard, road embankment, excavation of the construction site andearth. According to its characteristics, part of the excavation will be used to backfill, but theabandoned useless materials will form the slag. The maximize utilize of excavated material to backfill could reduce the slag. The nearest piled up of the slag could reduce the soil and waterloss. Therefore, the reasonable analysis of source and amount of waste slag was the firstrequirement of the slag field arrangement designing.(2) It was necessary to select a reasonable centralized piled up place for the unable usedearthworks. The selection and arrangement of residue field need to meet the requirements ofthe laws and regulations. And also the selection and arrangement should able to improve theland use rate, make convenience for transportation and protection, and avoid the soil erosion,combining with the self-arrangement features.(3) The different residues disposal forms will cause water and soil loss differently underdifferent natural environmental conditions. Only making clear the soil and water loss typesand harms in specific condition, the specific protection measures could be raised.(4)The protection of residues disposal area was the focus of pumped storage powerstation soil and water loss protection. Different measures shall be laid according to thedifferent residues disposal area arrangement and construction stages. And the comprehensiveutilization ratio of water and soil resources should be improved in the premise of ensuring theresidue field stability.