采矿与安全工程学报Issue(5)：846-852,7.DOI:10.13545/j.cnki.jmse.2015.05.023
充填开采中渗流对覆岩蠕变影响规律的研究
Study of overlying strata creep affected by seepage in backfilling mining process
摘要
Abstract
Because the creep properties of overlying strata will be affected by the groundwater seepage in the backfilling mining process, which will finally affect the long-term stability of the overlying rock and surface. Starting from the general solution of the rheological mechanics, this paper has derived the stress equilibrium equation of the rock under the action of stress and water pressure according to the equation of hydrostatic equilibrium, the principle of effective stress, and the geometric equations based on the Burgers model in the classic rheology. Meanwhile seepage field control equation has been ac-quired according to the Darcy’s law and the seepage field equation of continuity. Finally the see-page-creep coupling mathematical model has been founded. Besides, based on the actual geologic con-ditions of some mine, the paper has also systematically studied the overlying strata creep rules under different mining methods and different pore water pressures according to the derived mathematical model of seepage-creep coupling and on the computing platform of Comsol Multiphysics.关键词
“三下”压煤/充填开采/渗流-蠕变耦合/孔隙压力Key words
“buildings, railways and water bodies” pressed coal-mining/backfill mining/seepage-creep coupling/pore pressure分类
建筑与水利引用本文复制引用
浦海,曹丽丽,邱艳勇,仇培涛..充填开采中渗流对覆岩蠕变影响规律的研究[J].采矿与安全工程学报,2015,(5):846-852,7.基金项目
国家重点基础研究发展计划(973)项目(2015CB251601，2013CB227900)；国家自然科学基金项目(5142003，51322401，U1261201)；中央高校基本科研业务费专项资金项目(2014YC09，2014ZDPY08)；高等学校学科创新引智计划项目(B07028) （973）
