摘要
近年来,随着采矿工程的开采深度不断增加,开采条件也越加复杂,对煤矿的安全生产等问题的研究也在不断深入。其中导水裂隙带高度的预测对煤层安全开采具有越来越重要的意义。根据魏墙煤业现场开采条件和围岩力学参数,建立合适的数值模型,利用FLAC3D对1311工作面进行分步开采模拟。基于典型的“三带”理论中垮落带与弯曲下沉带的受力特征,对数值模拟结果进行综合分析,得出导水裂隙带发育高度的数值解;并结合现场钻孔探测进行对比分析,指出数值模拟方法相比现场探测具有容易实施、准确性好的优越性,对于1311工作面的导水裂隙带发育高度的预测和顶板水灾害防治具有一定指导意义,也为指导工作面开采作业,采矿安全提供了保证。
In recent years,with the increasing mining depth of mining engineering,the mining conditions are more and more complex,and the research on the safety production of coal mine is also in-depth.The prediction of the height of water flowing fractured zone is more and more important for the safe mining of coal mine.According to the field mining conditions and sur⁃rounding rock mechanical parameters of Weiqiang Coal Mine,the numerical model is established,and the mining simulation of 1311 working face is carried out by FLAC3D.Based on the stress characteristics of collapse zone and bending subsidence zone in the typical“three zones”theory,the numerical simulation results are comprehensively analyzed,and the numerical so⁃lution of the development height of water flowing fractured zone is obtained.Compared with the field drilling detection,the nu⁃merical simulation method has the advantages of easy implementation and good accuracy.The research has a certain guiding significance for the prediction of the development height of water flowing fractured zone and the prevention and control of roof water disaster in 1311 working face,which provides a guarantee for the mining operation and mining safety.
作者
任世虎
REN Shihu(Shaanxi Yanchang Petroleum Hengshan Weiqiang Coal Industry Co.,Ltd.,Yulin 719100,China)
出处
《陕西煤炭》
2021年第S02期11-16,41,共7页
Shaanxi Coal
关键词
三带预测
导水裂隙带
FLAC3D
钻孔探测
three zone prediction
water flowing fractured zone
FLAC3D
borehole detection
