Author(s)

Y. Abousleiman, M. Bai, H. Zhang, T. Liu and J.-C. Roegiers

Abstract

This paper presents an analysis of the mechanisms related to surface subsidence over a longwall mining region where ground water inflow into the mining panel occurs concurrently with the overburden deformation. The finite element analysis is based on the theory of poroelasticity for dual-porosity media in which natural fractures embedded in the porous formation provide significant flow paths and deformability as well as the interaction with the host rock mass, that renders in the subsidence simulation substantially different from the traditional single- porosity approach or sole rock mechanics approach. 1 Introduction

Keywords