摘要
为研究煤层底板陷落柱的突水过程以及陷落柱发育高度、底板岩层强度以及含水层水压3因素对底板陷落柱突水的影响,运用基于有限元的数值分析方法模拟了陷落柱活化及底板裂隙扩展和贯通形成突水通道的全过程,通过对应力场和损伤场的解读,突水通道形成的时空标定在模拟中得到了初步实现,3因素对陷落柱突水的影响在结果中的规律性显现得到了详细分析;另基于开滦范各庄2171采面工程实例,建立模型分析了其突水原因,结果显示高水压下陷落柱发生了活化,高压水流经由陷落柱在-390 m高程劈入煤岩形成突水通道引发了水害。
To investigate the process of water inrush related to the underlying collapse column in coal floor and the influence of the height of collapse column, the magnitude of floor strata strength and hydraulic pressure, numerical simulation based on the finite element code was applied to explore the process of the underlying collapse column activation and floor strata fracture initiation, propagation and coalescence. Through observation of the stress field and damage field, water inrush pathways were initially calibrated and the regular results of 3 factors were studied and analyzed in detail. A model was established based on 2171 working face at Fangezhuang Mine in Kailuan to figure out the water inrush cause and related influence. Conclusion showed that a collapse column got failed under hydraulic pressure and then ripped into coal floor at the altitude of -390 m forming the water inrush pathway and water disaster.
出处
《煤矿安全》
CAS
北大核心
2014年第10期162-165,共4页
Safety in Coal Mines
基金
国家重点基础研究发展计划(973计划)资助项目(2014CB047100)
国家自然科学基金面上资助项目(51174039)
关键词
突水
陷落柱
通道
损伤
含水层
水压
water inrush
collapse column
pathway
damage
aquifer
hydraulic pressure
作者简介
李志超（1989-），男，硕士研究生，主要从事煤矿突水数值模拟分析及监测方面的研究工作。
