摘要
From an analysis of the relationships of grouting coefficients under the conditions of grouting reducing subsidence, it is concluded that the reducing subsidence rate is in direct proportion to the grouting-recovery ratio, and its proportional coefficient depends on the coefficient of reducing subsidence and collapsing coefficient.The coefficient for reducing subsidence volume φ=ΔV/V_(ash) is related to overburden lithology.The coefficient for reducing subsidence volume φ is always larger than 1.This improves the reducing subsidence rate,the grouting-recovery ratio, and the coefficient for reducing subsidence volume, which can maximize the control of surface subsidence.
From an analysis of the relationships of grouting coefficients under the conditions of grouting reducing subsidence, it is concluded that the reducing subsidence rate is in direct proportion to the grouting-recovery ratio, and its proportional coefficient depends on the coefficient of reducing subsidence and collapsing coefficient. The coefficient for reducing subsidence volume φ=△V/Vash is related to overburden lithology. The coefficient for reducing subsidence volume φ is always larger than 1. This improves the reducing subsidence rate, the grouting-recovery ratio, and the coefficient for reducing subsidence volume, which can maximize the control of surface subsidence.
基金
Supported by the National Natural Science Foundation of China (50174035, 50474029)
