The Strata Movement Model for Solid Compacted Backfilling Based on Structure Key Layer

According to the sedimentary characteristics of stratum and similar material simulation, the strata movement characteristics for the solid compacted backfilling are divided into two types for describing. One is structure key layer; the other is no structure key layer. Aiming at the second type, the solid compacted backfilling strata movement model is established, that is made up of three organic composition parts, namely structure key layer mechanical model, rock movement model above the structure key layer and the soil movement model above bedrock surface. At last, taking the model based on the structure key stratum as an engineering project, it has achieved good effect.