辽宁工程技术大学学报（自然科学版）2017，Vol.36Issue(10)：1009-1014,6.DOI:10.11956/j.issn.1008-0562.2017.10.001
深部急倾斜软底煤巷失稳数值模拟及支护研究
Numerical simulation and support research on the instability of deep-steeply inclined coal roadway with soft floor
摘要
Abstract
According to the serious floor heave,the deformation of left side is more significant than that of right side,and the increasing of deformation characteristics in water in a certain mine,the deformation mechanism and support scheme were simulated by using the method of numerical simulation and field for steeply inclined coal roadway under the condition of soft floor and hard roof.The results show that both the significant difference of floor and roof lithology showing different deformation characteristics and the mud sandstone of floor weakened by water are the main reason.The maximum principal stress is concentrated on the top,bottom and two sides of the roadway,and it is 1.54 times of the horizontal stress and 1.67～1.64 times of the vertical stress.Bolt-net-anchor and steel band of model W coupling with shotcreting support scheme is proposed,plastic zone and the tensile yield are significantly reduced,the floor heaves volume reduced to 19.8cm,the anchor ring is formed between the anchor bolts,and better supporting effect is obtained.关键词
急倾斜/煤层巷道/硬项软底/变形失稳/非对称支护Key words
steeply inclined/seam roadway/hard roof and soft floor/deformation and instability/asymmetrical support分类
矿业与冶金引用本文复制引用
王宗林,谭震,梁冰,孙维吉,石占山..深部急倾斜软底煤巷失稳数值模拟及支护研究[J].辽宁工程技术大学学报（自然科学版）,2017,36(10):1009-1014,6.基金项目
国家自然科学基金(51374124) （51374124）
国家青年自然科学基金(51304111) （51304111）
