school of miming.,China University of Mining and Technology MOE Key Lab of Deep Coal Resource Mining,China University of Mining and Technology

针对固体充填条件下上覆巷道围岩变形受诸多因素影响的问题,基于杨庄矿3644工作面地质条件,采用ABAQUS建立了固体充填采煤上覆巷道围岩变形分析模型,研究了充实率、开切眼至上覆巷道水平距离和充填工作面长度3个因素对巷道围岩变形的影响,以底板累计下沉量、顶底板和两帮移近量3个指标作表征,得出3个巷道围岩变形指标均随充实率的增加呈线性减小,随充填工作面长度和开切眼与上覆巷道水平距离的增加呈"半抛物线型"增加的规律,并采用多元非线性回归的方法拟合了底板累计下沉量、顶底板移近量、两帮移近量3个指标与3个影响因素的函数关系。工程实践表明,11号监测站处上覆巷道底板累计下沉拟合值为157 mm,实测下沉值163 mm,两者仅相差6mm,实测结果验证了模拟结果是可靠的。

under the condition of the soldis backll cal mining the deformation of the surrounding rock in the upper overburden roadiway was afcted by several factors. Based the geological conditons of No.3644 coal mining face in Yangzhuang Mline,the ABAQUS was applied to estabih the surounding rock deformation anayss model of the upper overourden roadvay with the solis backll mining. The paper stressed the study on the three factors of the compact rate,the horzontal distance between the open- off cut and upper overburden roadway and the lengh of the backl mining face affected tothe surounding rock defomation ofthe mine rcadiway certain,three indexes of th total subsidence value of the foo,the convegence between the roof and foor and the convergence between the two sidewels were presetted.The surrounding rock deformation indewes of the three mine roadways were decrease in lnear with the repleton rate increased,with thelength of the bac.l. roring face and the horzontalditance bewee the open- of cut and upper level radway inreased with " a semi parabola type" increased law;a multiple noliear regression method was applied t fit the function relationship between the three indexes of th foortatal subsidence value.the roof and foor convergence and twvo side al cnvergence and the thvee infuence factors. The project practices showed that the total subsidence fiting value of the foorat No.11 mornitoring and measuring station "as 157 mm and the actual measured subsidence value was 163 mm.There was 6 m diference between the two vaues and the simulationrl aility was indidually pproved.

国家自然科学基金重点资助项目(50834004)；中央高校基本科研业务费专向资金资助项目(2012DXS02)；