flyash

The paper introduced the construction technology of liquid flyash pouring retailing backwall in order to assure refill quality of retailing backwall,protect retailing backwall depression or jumping.

介绍了为保证台背回填质量,防止台背沉陷或跳车,在形受限制,采用液态粉煤灰灌注台背工工艺,对这项工工艺法、和注意事项进行了详细阐述。