Study on the Coefficient of Surface Subsidence by Mining on the Condition of Thick Unconsolidated Layers and Thin Stratum

Abstract

Aim at the phenomenon of sidestep subsidence on surface by mining on the condition of thick unconsolidated layers and thin stratum,article bases on the theory analysis and calculation, and uses determining key strata and key strata flexibility calculation, and expatiates the characters of η, and makes it divide into subsection function. Contrast with project example and simulation test, it shows:if subsection function η is applied, then using it to forecast the quantity of surface subsidence that will be more approach to fact, which can syllabify explain phenomenon of sidestep subsidence on surface, and has definite meaning to coach locale.