Similar material and numerical simulation of strata movement laws with long wall fully mechanized gangue backfilling
This paper studies on strata and surface movement laws with long wall fully mechanized gangue backfilling technology by similar material simulation and numerical simulationmethod. The results indicate that 1) the overlying strata under the situation of mining with long wall fully mechanized gangue backfilling mainly shows a slow bending and subsidence, characterized by bending, fracturing, and bed separating, while the overlying strata develops fractured zone and bending zone only; and 2) if the compression rate of backfill is about 30%, the surface subsidence coefficient is around 0.22. In addition, this paper points out that improving the filling rate of gangue backfilling in goaf and the initial density of filling body are the main technological way to enhance the controlling effect of strata movement. Based on this point of view, four technical measures are proposed at the end.
coal mining with gangue backfilling subsidence coefficient density control effect
Guo Guang-li Zha Jian-feng Miao Xie-xing Wang Qiang Zhang Xian-ni
Jiangsu Key Laboratory of Resources and Environmental Information Engineering ,University of Mining State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining Tec
国际会议
The 6th International Conference on Mining Science & Technology ICMST 2009(第六届国际矿业科学技术大会)
徐州
英文
1-6
2009-10-18（万方平台首次上网日期，不代表论文的发表时间）