南阳煤矿两带高度UDEC数值模拟研究  

UDEC Numerical Simulation of Two-zone Height in Nanyang Coal Mine

作　　者：陈建鹏 胡涛[2] 李柱和 郑纲 CHEN Jian-peng;HU Tao;LI Zhu-he;ZHENG Gang(Nanyang Coal Mine,Gaoping 048400,China;School of Mechanics and Civil Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;China Mine Science Innovation(Beijing)Coal Technology Co.,Ltd.,Beijing 100083,China;Xi′an Research Institute Co.,Ltd.,China Coal Technology and Engineering Group Corp.,Xi′an 710054,China)

机构地区：[1]南阳煤矿,山西高平048400 [2]中国矿业大学(北京)力学与建筑工程学院,北京100083 [3]中矿科创(北京)煤炭技术有限公司,北京100083 [4]中煤科工集团西安研究院有限公司,西安710054

出　　处：《煤炭技术》2020年第4期133-135,共3页Coal Technology

摘　　要：以南阳煤矿3207工作面为背景,为确定该工作面的导水裂隙带高度,运用UDEC数值模拟软件,模拟南阳煤矿3207综采工作面采用常规50 m煤柱开采和巷旁支护深孔爆破切顶2种情况下冒落带和裂缝带的高度。结果表明:受关键层影响,2种方式的导水裂隙带高度是一致的,巷旁深孔爆破切顶能使冒落带高度大大增加。现场试验结果证明了深孔爆破切顶导致冒落带高度增加和上覆裂缝带厚度减小,减小了裂缝带"砌体梁"结构对留巷的旋转挤压作用,保证了留巷的稳定性。Taking 3207 working face of Nanyang coal mine as background, in order to determine the height of water-conducting fracture zone, the height of caving zone and fracture zone in 3207 fully mechanized mining face of Nanyang coal mine was simulated by UDEC numerical simulation software under two conditions: conventional 50 m pillar mining and deep-hole blasting roof cutting with roadside support. The results show that the height of water conduction fracture zone is the same under the influence of key strata, and the height of caving zone can be greatly increased by cutting roof by deephole blasting near roadway. The field test results show that the roof cutting of deep hole blasting results in the increase of caving zone height and the decrease of overlying crack zone thickness, which reduces the rotational extrusion effect of the "masonry beam" structure in the crack zone on retained roadway and ensures the stability of retained roadway.

关 键 词：UDEC数值模拟 导水裂隙带 冒落带 砌体梁 巷旁支护深孔爆破沿空留巷 

分 类 号：TD745[矿业工程—矿井通风与安全]