毛滩水电站厂房小基坑防渗墙上部松散架空层施工成槽技术

Maotan Power Plant Powerhouse Small Pit Cutoff Wall Upper Loose Frame Empty Layer Construction Slotting Technology

毛滩水电站厂房小基坑围堰防渗墙工程量大、工期紧、要求施工强度高。在钻进该地层时,采用何种成槽技术、能否顺利成槽,是影响设备配置类型及数量的关键,也是影响工期的关键。本文介绍了针对上部松散架空层的有效成槽技术的研究过程及应用效果。

Maotan Power Plant Powerhouse Small Pit Cofferdam Cutoff Wall is characterized by large engineering quantity, tight construction duration and high construction strength.Slotting technology and smooth slotting during drilling the ground layer are critical for the equipment configuration type and quantity,and important for the construction duration.Research process and application effect of effective slotting technique aiming at upper loose frame empty layer are introduced in the paper.