Damage and fracture characteristics of the dam body under the vibration load
The underground reservoir in coal mines is an important means of protecting and using the wa-ter resources of coal mines in western mining areas,and the stability of water storage structure dam is the basic rating index for the safe construction and stable operation of the underground reservoirs.Based on the engineering background of 22101 underground reservoirs at the Shangwan coal mine in the western mining region,the influence of mine vibration load at different focal locations on the coal pillar dam and artificial dam of the underground coal mine reservoir is studied with theoretical analysis and numerical simulation.The results show that the range of high-stress zone,stress concentration,and the range of plastic zone in the strike direction increase significantly after the coal pillar dam and T-shaped artificial dam are loaded by the mine vibration.The effect under the vibratory load of the near-field mine is more apparent,than that in a far-field mine,especially the dam body on the facing wave.For the far-field cyclic dynamic load dis-turbance,only the initial disturbance considerably weakens the force of the T-type artificial dam.
mine earthquakedynamic loadunderground reservoirpillar damartificial dam body
万方数据
维普
