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.

介绍了为背回填质量,防止背沉陷或跳车,在地形受限制的地方,采用液态粉煤灰灌注背的工工艺,对这项工工艺的方法、步骤和注意事项进行了详细的阐述。