To take the gypsum body filling borehole in the Daizhuang coalmine,Jining as an example,introduced borehole design,main specifications and drilling technical parameters.

Experimental study on rheology performances of paste backfilling slurry;

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.

Aiming at paste backfilling of underground Open-stope,this paper put up systematic and deep research to theory and technology.

Influence factor analysis of paste filling material strength;

Test study of cement adding mode of paste filling;

Study on Surface Subsidence with Paste Filling under Village;

A Primary Discussion on the Thickening Law of Paste-filling

According to the features of paste-filling control system and the requirement of the opening information by control lay and managing lay,an industrial Ethernet control scheme was designed.

Through test study on paste fill material of unclassified tailings and broken rock,rough concentration and rate of paste filling materials are determined,which provides valuble technical parameters for the application of broken rock in paste filling,and provides reliable basis for field test in the future.

Through Cold-Bond Tailings Agglomeration, these fine tailings can be agglomerated into pellets which can then be used as a coarse aggregate in paste fill.