Proportioning of Paste Backfilling Materials to Moisture and Its Allowable Measurement Error

Solid waste paste filling material is a new type of stuff applyied to non-village-relocation coal extraction.This material is composed of water,aggregate and cementation,and is one of key technologies in Green Mining,having a good development prospect.The mass concentration of the paste backfilling materials is one of the key factors affecting the performance of backfilling and the measurement error in raw materials and in moisture test are two main factors affecting the mass concentration.Therefore,the effect of accuracy in testing the moisture of raw materials on mass concentration was analyzed to find out the allowable errors so as to provide a foundation for practical production.