基于FLAC^(3D)的导水断裂带演化规律研究  

Study on Evolution Laws of Water-conducting Fractured Zone Based on FLAC^(3D)

作　　者：赵明东[1] 董东林[1] 申建军[1] 

机构地区：[1]中国矿业大学(北京)地球科学与测绘工程学院,北京100083

出　　处：《煤矿安全》2016年第11期49-52,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(41172213;41272275)

摘　　要：以某矿9#煤层首采面为研究背景,建立了FLAC^(3D)力学模型,分别对不同的工作面长度和采高与煤层顶板导水断裂带发育高度的关系进行了研究。研究结果表明:不同采高情况下,工作面长度小于250 m的时候,导水断裂带高度都随工作面长度的增加呈线性增大关系,工作面长度在250~300 m之间时,导水断裂带高度增加迅速,当工作面长度达到300 m之后,导水断裂带高度的增加变缓,并都在工作面长度达到350 m的时候达到最大值,且随着工作面长度的增加不再变化;随着采高的增加,导水断裂带高度呈线性增大趋势。Taking the geological conditions of the first coal face in a certain coal mine as the background, FLAC^3D software was used to study the effect of length and mining height of working face on the height of water - conducting fractured zone. The simulation results show that in the case of different mining height, the height of water - conducting fractured zone increases with the face length, when the face length is lower than 250 m, and the relationship between the height of water - conducting fractured zone and the face length is ap- proximately linear; when the face length is between 250 m and 300 m, the height of water - conducting fractured zone increases rapid- ly, when the face length reaches to 300 m, the height of water - conducting fractured zone increases slowly, the maximum height of wa- ter - conducting fractured zone appeared, when the face length is 350 m ; the relationship between the height of water - conducting frac- tured zone and the mining height is approximately linear.

关 键 词：FLAC3D 导水断裂带 工作面长度 采高 线性关系 

分 类 号：TD741[矿业工程—矿井通风与安全]