摘要
阐述了窄煤柱沿空掘巷的实质,运用岩层控制理论,提出窄煤柱沿空掘巷煤柱稳定核区概念,并以煤柱稳定核区的大小作为煤柱稳定性的一个判据,同时给出选取窄煤柱合理宽度的数学公式,并辅以数值计算方法对该理论进行验证.模拟结果证明,选取巷道塑性破坏区半径的4倍范围作为沿空掘巷窄煤柱的宽度是合理的.
The essence of gob-side entry driving with narrow pillar was expounded.The theory of strata control was used,the concept was put forward that of the stable central zone of narrow coal pillar along goaf,and its size was a stability criterion of coal pillar.The mathematical formula was given that of selecting reasonable width of coal pillar,the theory was verify by numerical methods.Simulation results show that,it is reasonable to select the radius of plastic area 4 times as the width of narrow coal pillar along goaf.
出处
《湖南科技大学学报（自然科学版）》
CAS
北大核心
2010年第4期5-8,共4页
Journal of Hunan University of Science And Technology：Natural Science Edition
基金
国家自然科学基金项目(50874042)
湖南省自科基金项目(06JJ50092)
关键词
沿空掘巷
稳定核区
锚杆支护
数值模拟
roadway driving along goaf
the stable central zone
bolt support
numerical simulation.
