毛尔盖水电站大坝碎石土开采与质量控制

毛尔盖水电站大坝枢纽工程为砾石土心墙堆石坝,其中砾石土主要来源于团结桥土料场。由于该料场碎石土料源质量分布极不均匀,在实际开采过程中,招标文件中所描述的地质情况与料场复查结论出入甚大,料源质量控制难度比较大;鉴于大坝填筑工期紧、填筑强度高,且因碎石土心墙是大坝防渗的主要部分,碎石土料源质量的好坏直接影响到大坝填筑的总体施工质量和大坝蓄水后的运行安全。介绍了碎石土开采与质量控制措施。

Excavation of Debris in Construction of Dam at Maoergai Hydropower Station and Quality Control

At Maoergai hydropower station,the dam project is rockfill dam with gravel soil core.The gravel soil mainly originated from Tuanjieqiao borrow area.However,because debris in this borrow area are very different in qualities and geological conditions described in bidding documents and borrow area check conclusions are quite different from those encountered during actual excavation,quality control for original material is relatively difficult.Furthermore,dam was placed in short construction period and rapid pl...