Deformation mechanism and support measures of the soft rock roadway in Ronghua coal mine
Using scanning electron microscopy and x-ray diffraction instrument to analyze the physics and chemistry of the rock samples To solve the high stress soft rock roadway with large deformation problem at Ronghua coal mine, The experimental results show that the rock is mainly composed of quartz, feldspar and clay minerals, including clay minerals US mixed layer than 46%~96%, belonging to strong swelling soft rock roadway.Formulate different surrounding rock control schemes with finite difference method, and choose a better support scheme through three-dimensional numerical simulation.According to the site conditions, we design a steel truss reverse floor heave structure, combined with finite element simulation and field application.The monthly deformation of the roadway is less than 20 mm,provide a reliable guarantee for the actual production.
F.Y.Ma
College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing, China;College of Mining Engineering, Heilongjiang University of Science and Technology, Harbin, China
国际会议
The 2nd International Symposium on Land Reclamation and Ecological Restoration (第二届国际土地复垦与生态修复学术研讨会)
西安
英文
97-99
2017-10-20（万方平台首次上网日期，不代表论文的发表时间）