Provide an appropriate mixing plan for hydraulic concrete filler to fill uranium mines.

Special measures must be taken to maximize the recovery of uranium deposits, reduce the absorption rate of radiation for personnel working, reduce environmental pollution and reduce mining costs in underground uranium mining. One of these measures is to fill the extracted spaces, in particular, in the tunnel cut and fill mining method. In this research, it has been tried to select the most suitable concrete filler mixing plan with the above-mentioned attitudes. To carry out this research, in a laboratory scale, concrete mixing designs were implemented for hydraulic concrete with four types of rock materials from waste of uranium mines, river sand, washed sand and barite sand. Samples of these mixing designs for testing of resistance One-axial pressure was taken. Also, in addition to calculating the cost of making any mixing plan, hydraulic concrete was constructed in different thicknesses adjacent to the uranium ore was poured to measure the amount of radiation. Radiation experiments and measurements were carried out for concrete mixing designs in different thicknesses. The results indicate a sharp decrease in the radiation and absorption dose of radiation by increasing the thickness of the filler concrete. It has also been proven that mining waste and drainage water from uranium mines that are contaminated with radioactive substances can be mixed with hydraulic concrete fillers to fill uranium underground mines in order to reduce environmental pollution and Filling costs.