摘要
建立了下向分层进路式胶结充填体的力学模型,应用弹性力学和材料力学的理论,结合某矿实际,分别对硬支弱板结构和软支弱板结构进行了力学分析,寻出了人工假顶的危险截面和危险点,阐明了该矿以往发生事故的真正原因,同时也分析了进路侧帮的弹性模量等对人工假顶稳定性的影响,提出了提高人工假顶稳定性的一些措施。
A mechanical model of cemented fills ceiling of underhand delamination heading is founded. Applying the principles of elastic mechanics and material mechanics, mechanical analysis of the two structures, namely, structure of hard support and weak slab as well as structure of weak support and weak slab, are elaborated in order to find the dangerous cross section and point of man-made intermediate ceiling. Such analysis throws light on the causes of mining accidents. The influences of elastic modulus of heading lateral walls on the stability of man-made intermediate ceiling is also analyzed by putting forward some measures to improve the stability of man-made intermediate ceiling.
出处
《江西有色金属》
2007年第4期12-15,共4页
Jiangxi Nonferrous Metals
基金
国家自然科学基金项目(50490270)
国家自然科学基金项目(59804007)
关键词
力学模型
人工假顶
硬支弱板结构
软支弱板结构
弹性模量
mechanical model
man-made intermediate ceiling
structure of hard support and weak slab
structure of weak support and weak slab
elastic modulus
