DOI: 10.11799/ce202405011
Principle of fully mechanized gangue-throwing filling technology and the sand-throwing test
WU Yuyi
LIU Chengyong
ZHANG Peng
LIU Wentao
HUANG Jianbin
LIU Zhicheng
WANG Hanqiu
Abstract：In view of the difficulties in surface subsidence control and solid waste disposal in mines,a fully mechanized gangue-throwing filling technology of"throwing instead of tamping"was proposed.Based on the principle of gangue-throwing filling technology,the mathematical model of gangue-throwing movement was constructed,and the basic parameters of gangue filling were obtained.On this basis,a simulation platform for gangue-throwing backfilling was built to carry out on-site sand throwing tests,and the feasibility of fully mechanized mining gangue-throwing filling technology and the rationality of parameters were studied.The results show that:firstly,the measured values and variation rules of each parameter in the process of gangue-throwing are close to the theoretical values,the field design can be guided by theory;secondly,when the throwing angle is 50° and the throwing speed is greater than 8m/s,it can meet the filling demand;thirdly,the overall filling rate of gangue filling can exceed 95%,and the accumulation angle of gangue is obviously higher than that of natural accumulation,achieving favorable filling effect.
Keywords：gangue-throwing fillingsolid waste disposalthrowing parameterssimulation test
Publication Date：2024-05-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 69-74 )