基于Rhino^(3D)-FLAC^(3D)耦合技术的库区下伏综放采煤沉陷区稳定性分析  

Stability analysis of coal mining subsidence area of underlying fully mechanized top coal caving based on Rhino-FLAC coupling technology

作　　者：黄健丰 吴璋 张振振 李永强 张浩 HUANG Jianfeng;WU Zhang;ZHANG Zhenzhen;LI Yongqiang;ZHANG Hao(China Coal Technology and Engineering Group Xi’an Research Institute,Xi’an 710077,China;China Coal Research Institute,Beijing 100013,China)

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710077 [2]煤炭科学研究总院,北京100013

出　　处：《煤矿安全》2021年第4期212-217,225,共7页Safety in Coal Mines

摘　　要：为了定性、定量地分析库区水体荷载对综放采煤沉陷区稳定性的影响程度,以红岩河水库下伏采煤沉陷区为研究对象,通过Rhino^(3D)-FLAC^(3D)耦合技术快速构建三维数值模型,结合现场试验,研究了综放采煤沉陷区覆岩裂隙发育特征及库区水体荷载对采煤沉陷区覆岩稳定性的影响。结果表明:8712综放采煤沉陷区覆岩导水断裂带整体呈"马鞍"状,最大发育高度为138.24 m;库区水体荷载作用下采煤沉陷区地表垂向位移增加334.7 mm,导水断裂带发育高度增加3.76 m。In order to qualitatively and quantitatively analyze the degree of influence of the water load on the stability of fully mechanized caving coal subsidence area,the underground coal mining subsidence area of Hongyanhe Reservoir was taken as the research object,and a three-dimensional numerical model was quickly constructed through Rhino^(3D)-FLAC^(3D)coupling technology.Combined with field experiments,the development characteristics of overburden cracks in fully mechanized top coal caving mining subsidence area and the influence of water load on the stability of overburden rock in coal subsidence area were studied.The results show that:8712 fully mechanized top coal caving mining subsidence area water-carrying fissure zone as a whole is"saddle"shape,the maximum development height is 138.24 m;the vertical displacement of the surface of coal mining subsidence area increased by 334.7 mm,the development height of the water fissure zone increases by 3.76 m.

关 键 词：采煤沉陷区 地质体建模 数值模拟 覆岩裂隙发育规律 稳定性评价 

分 类 号：TD327[矿业工程—矿井建设]