论文部分内容阅读
以酒泉市戈壁荒漠区的9个已建成的典型风电场为研究对象,对风电场不同防治分区的影响范围和程度进行对比研究,系统分析风电场建设过程中水土流失特征。结果表明:风电场各防治分区扰动地表面积从大到小依次为道路区(63.33%)>风机区(21.85%)>集电线路区(10.47%)>施工营地区(2.93%)>监控中心区(1.42%);挖方量从大到小依次为风机区(77.38%)>道路区(13.76%)>集电线路区(6.39%)>监控中心区(2.16%)>施工营地区(0.32%),道路区和风机区是风电工程施工扰动最大的区域,这些区域的基础开挖、搬运和填筑等土建工程也是产生水土流失的重点环节。酒泉市在目标年(2015年和2020年)完成装机总容量时,机组台数将分别达到8 474台和1万3 334台;扰动地表面积将分别达到7 880.82 hm2和1万2 400.62 hm2;开挖土石方总量将分别为1 271.10万m3和2 000.10万m3,检修道路长度将分别达到4 127 km和6 494 km。
Taking nine completed typical wind farms in Gobi Desert of Jiuquan City as the research object, the scope and extent of the different prevention and control zoning of wind farms are studied comparatively, and the characteristics of soil and water loss during the construction of wind farms are systematically analyzed. The results showed that the surface area of disturbances of various control zones in wind farms were 63.33% in road area, 21.85% in fan area, 10.47% in power transmission line area, 2.93% in construction camp area, (1.42%); the excavation volume descending order is: fan area (77.38%) road area (13.76%) power line area (6.39%) monitoring center area (2.16%) construction camp area %). Roads and fan areas are the most disturbed areas for wind power construction. The foundation excavation, handling and landfilling of these areas are also key areas for soil erosion. When the total installed capacity of Jiuquan City is completed in the target year (2015 and 2020), the number of units will reach 8,474 units and 13,333 units respectively; the disturbance surface area will reach 7,880.82 hm2 and 12,400.62 hm2 respectively; The total amount of earthwork excavation will be respectively 12.71 million m3 and 20.001 million m3, and the length of the overhaul roads will reach 4 127 km and 6 494 km respectively.