滇西北某矿山井下泥石流成灾机理的数值模拟研究

Numerical Simulation Study on Disaster Mechanism of Underground Debris Flow at a Mine in Northwest Yunnan

某矿山位于滇西北,采用自然崩落法开采,随着开采深度的增加及地表塌陷范围的不断扩大,极易发生井下泥石流事故,对井下开采过程中的人与设备的安全造成严重威胁。因此,有必要对其井下泥石流的成灾机理进行探索,从而预测评估发生泥石流灾害的可能性,采取科学合理的防治措施,最大限度地降低井下泥石流发生的规模,避免对矿山开采造成影响。该文采用PFC数值模拟软件,对井下采矿的过程进行模拟,通过分析模拟的结果,从而得出结论,并提出相对应的防治措施。

Located in the northwest of Yunnan province,a certain mine employs the natural collapse method for mining.As mining operations reach greater depths and surface subsidence expands,the risk of underground mudslides increases,posing a serious threat to personnel and equipment safety.It becomes essential to investigate the mechanism behind underground debris flow disasters,which will enable us to predict and evaluate their occurrence,implement scientifically reasonable preventive measures,minimize the scale of debris flows,and avoid disruptions to mining activities.This study utilizes PFC numerical simulation software to simulate the underground mining process,analyze the simulation results,draw conclusions,and propose corresponding prevention and control measures.