DOI: 10.11799/ce202411001
Grouting and filling technology for overburden separated layers under the background of green coal mining in the new era
HUO Chao
WANG Feng
NIU Hongwei
FANG Huiming
LYU Yi
PAN Haiyang
ZHANG Zhijun
ZHAO Ming
MIAO Jian
Abstract：To solve the problem of mining under buildings,railways and water body,and realize green mining of coal resources,based on the cases about reducing subsidence by separation layer grouting for past 40 years,we analyzed the mechanism of subsidence reducing by separated layer grouting,from three aspects,i.e.geological factors,mining factors and grouting materials.We illustrated a case of grouting and filling in overlying strata in No.3117 working face of Xiadian Coal Mine of Lu'an Group.The analysis indicates that the grouting and filling in overburden separated layer cannot be simply dealt with the same application process.The stratum lithology,grouting key strata horizon and geological structure among the geological factors are the primary conditions,which affect the time and space of formation and development of separation layer.Among the mining factors,the mining thickness,mining depth,width of the working face and mining speed have an important influence on the formation of separation space,which further determines the effect of reducing subsidence by grouting filling.Grouting materials have a direct impact on the economic benefits of grouting engineering.
Keywords：green miningseparation layer grout fillinggeological factorsmining factorssubsidence reducing ratio
Publication Date：2024-11-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1-6 )