牛西矿回风立井风道破裂机理分析

Analysis on Cracking Mechanism of Ventilation Roadway for Mine Air Returning Shaft in Niuxi Mine

为分析牛西矿回风立井风道墙体破裂机理,建立了地表移动观测系统。研究结果表明,导致牛西矿回风立井风道墙体开裂破坏的根本原因是人工回填土地基的不均匀沉降变形,直接原因是风道砖砌墙体结构的刚性不足,而山坡地表积水下渗可能诱发的山体滑移则是潜在因素。牛西矿回风立井风道破裂预防与治理措施应围绕这三个方面进行。

In order to analyze the cracking mechanism of the wall masses in the ventilation roadway for the mine air returning shaft in Niuxi Mine,a surface ground displacement observation system was established.The study results showed that the basic reason to cause the cracking and failure of the wall masses in the mine ventilation roadway for the mine air returning shaft in Niuxi Mine was the inhomogeneous subsidence deformation of the artificial backfilled soil base,the direct reason was the insufficient rigidity of the brick lined wall structure in the ventilation roadway and the down penetration of the surface water on the hillside could be the potential factor to induce the sliding of the hill.The failure prevention and control measures of the mine ventilation roadway for the mine air returning shaft in Niuxi Mine should be conducted around the above three aspects.