摘要
根据钱营孜煤矿含水层下W3232工作面精准安全开采为研究背景,依据采区实地水文地质勘探资料,进行实地钻探取样,对工作面充水因素进行分析,并使用FLAC3D数值模拟软件,建立工作面采动模型,研究覆岩采动破坏规律,进而预测“两带”发育高度模拟采动破坏演化特征,多角度地开展了W3232工作面合理留设防砂煤柱机理研究。结果表明:通过分析工作面围岩垂直应力、位移以及顶、底板塑性变化云图,对工作面覆岩破坏移动规律进行研究。模拟结果显示导水裂隙带高度和垮落带高度最大值分别为41.43 m、12.31 m,开采时垮落带不会波及“四含”,故该工作面具备留设防砂煤柱开采的条件,能够实现安全绿色开采。
According to Qian Ying cumin coal mine aquifer W3232 working face accurate safe mining as the research background,according to the field hydrogeological exploration data,field drilling sampling,analyze the face water factors,and use FLAC3D numerical simulation software,establish the face mining model,study the rock mining destruction rule,and predict the"two belt"development height simulated mining damage evolution characteristics,multi-angle in the W3232 working face reasonable fortification sand coal column mechanism.The results show that the vertical stress and displacement of the surrounding rock on the working face and the surrounding rock are studied.The simulation results show that the maximum value of the water fissure zone height and the height of the collapse zone are 41.43 m,12.31 m respectively,and the collapse zone will not affect the"four content"during mining.Therefore,the working face has the conditions of fortified sand pillar mining,and can realize safe and green mining.
作者
韩书远
宣以琼
HAN Shuyuan;XUAN Yiqiong(School of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China)
出处
《华北科技学院学报》
2025年第1期26-33,共8页
Journal of North China Institute of Science and Technology
基金
国家自然科学基金项目(51774007)。
