摘要
针对不同巷道煤柱留设而引起的地表下沉量及水平位移,采用FLAC^(3D)快速拉格朗日有限差分法,在支护方案确定的条件下,对不同留煤柱尺寸(10、15、20m)进行数值模拟,根据对比不同方案的顶板下沉量及水平位移量,选择更为安全及经济的区段煤柱留设方案,研究成果对区段巷道煤柱留设设计具有重要实践意义。
According to the FLAC^3D fast Lagrangian finite difference method, the surface subsidence and horizontal displacement caused by the coal pillar stay in different roadway are analyzed under the condition of the support scheme, and the size of the different coal pillars （10,15,20 m ）, It is of great practical significance to select a more safe and economical set-up scheme based on the comparison of the amount of roof sinking and the amount of horizontal displacement in different schemes.
出处
《山东煤炭科技》
2017年第10期16-17,20,共3页
Shandong Coal Science and Technology
关键词
煤柱
留设
模拟
coal pillar setting simulation
