里底水电站倮打塘砂石加工系统扩容改造与应用

Application and Capacity Expansion of Luodatang Sandstone Processing System in Lidi Hydropower Station

倮打塘砂石加工系统承担着乌弄龙、里底水电站砂石骨料供应任务,初期规划设计方案满足里底电站混凝土浇筑,系统粗碎生产能力按700t/h设计,2009年12月开始建设施工、2010年10月投产运行。受澜沧江上游各梯级电站前期建设和电网送出情况变化影响,2009年底,设计对乌弄龙、里底两电站开发时序重新规划,要求两电站同时截流,首台机组同年先后发电,引起两电站混凝土浇筑强度叠加,叠加后的系统按照高峰时段混凝土浇筑强度16×10^(4)m^(3)/月设计,成品生产能力1200t/h,需对原系统进行扩容改造。从系统工艺流程和布置、设备选型、环境保护、运行管理等方面对建设和运行过程中存在的问题及对策进行客观地分析,总结该砂石加工系统扩容改造的具体措施经验。

Luodatang sandstone processing system undertakes the tasks of supplying sandstone aggregates for Wunonglong and Lidi Hydropower Stations.The preliminary planning satisfies concrete placing of Lidi Hydropower Station,and the crushing capacity of the system is designed as 700 t/h.Construction commenced in December 2009 and put into operation in October 2010.Affected by the preliminary construction of each cascade hydropower station in the upper reaches of Lancang River and the changes of power grid delivery,the designer replanned the development sequence of Wunonglong and Lidi hydropower stations at the end of 2009.It is required that both power stations close simultaneously and the first unit generates power successively in the same year.After the concrete pouring strength of the two power stations is superimposed,the sandstone processing system is designed according to the concrete pouring strength of 16×10^(4)m^(3)/month during peak period,and the finished product production capacity is 1200t/h.Therefore,the original system needs to be expanded and reformed.This paper objectively analyses existing problems and countermeasures in construction and operation from the aspects of system process flow and arrangement,equipment selection,environmental protection and operation management,and summarizes the concrete measures and experiences for capacity expansion and transformation of the sand processing system.