Water Inrush Characteristics with Roadway Excavation Approaching to Fault
Abstract: Water inrush
disaster is an important factor in restricting safe production of the coal
mine. Taking the roadway in seam in Danhou Coal Mine, as the engineering
background, according to the spatial relationship of the roadway, the
impermeable layer, the fault and the loading conditions, the fault activation
mechanical model under the roadway excavation disturbance was built, and the
fault activation conditions, roadway water inrush criterion and water inrush
three modes were put forward. A three-dimensional numerical calculation models
were built by using FLAC3D. Through fluid-solid coupling calculation, the
surrounding rock damage and failure, the water inrush channel formation, and
the evolution process of water inrush of the roadway excavation approaching the
fault were analyzed. Moreover, the displacement field, the stress field and the
surrounding rock plastic failure characteristics of the roadway were revealed.
Furthermore, under the conditions of different water pressure, impermeable rock
thickness, fault displacement, and fault dip angles, the roadway water inrush
modes and their evolution characteristics were comparatively analyzed.
Author: Shuren Wang, Hu Wang
Hu Wang
Journal Code: jptkomputergg120076
