条带充填开采充填率对地表移动影响因素研究  

Study on Influence Factors of Filling Rate on Surface Movement in Strip Filling Mining

作　　者：张滨 乔冲 ZHANGBin;QIAOChong(Tianchen coal mine of Zaozhuang Mining(Group)Co.,Ltd.,Tengzhou277532,China)

机构地区：[1]枣庄矿业(集团)有限责任公司田陈煤矿,山东滕州277532

出　　处：《煤矿现代化》2021年第2期51-53,57,共4页Coal Mine Modernization

摘　　要：解决“三下”压煤问题的关键是地表沉陷的控制技术。条带充填技术的发展提供了一种经济有效的地表沉陷控制技术,本文采用数值模拟的方法研究了厚松散层下条带充填开采充填率对地表移动变形的影响因素及其规律。结果表明随着充填率的增加,主断面地表移动变形的下沉值、倾斜值(绝对值)、曲率值、水平变形值逐渐减小;当充填率由64.5%~69%时,地表最大下沉值、倾斜值极大值呈显著减小趋势,曲率极大值的减小幅度有所降低,水平变形极大值的减小幅度先减小后变大。The key to solve the problem of"three under"coal pressure is the control technology of surface subsidence.The development of strip filling technology provides an economic and effective control technology of surface subsidence.In this paper,the influence factors and laws of strip filling mining filling rate on surface movement and deformation under thick loose layer are studied by numerical simulation method.The results show that with the increase of filling rate,the subsidence value,inclination value(absolute value),curvature value and horizontal deformation value of the main section surface movement and deformation gradually decrease;when the filling rate is from 64.5%to 69%,the maximum surface subsidence and slope value decrease significantly,and the decrease range of the maximum curvature decreases,and the decrease range of the maximum horizontal deformation decreases first and then changes big.

关 键 词：条带开采 充填开采 地表移动 

分 类 号：TD823[矿业工程—煤矿开采]