摘要
基于现场实践及工程地质调查,结合工程地质理论与大变形力学原理,确认了镇城底矿煤巷顶板具有节理化软岩的特点,并具有膨胀型和结构变形型的复合型变形力学机制.应用有限差分程序FLAC2D,进行了软岩顶板复合型变形力学机制向单一型转化的力学对策和支护参数优化的模拟分析,提出了锚网索联合支护形式和支护顺序.经现场工业性试验,成功解决了在采动压力下煤巷软岩顶板难以支护的难题.
Based on engineering practice and amounts of geological survey analysis, combined with the theory of engineering geology and the principle of large deformation mechanics, the compound deformation mechanics mechanism of soft rock with tiny swelling and structure-deformed type （JS） was affirmed in the roof of coal roadways in Zhenchengdi Coal Mine, China. FLAC was used to analyze the mechanical measures and optimize support parameters while the deformation mechanical mechanism of soft rock transforming from compound to simple. The results of field experiments showed that the compound supporting of bolt-wire mesh-anchor has successfully solved many difficult problems for years in coal roadways of Zhenchengdi Coal Mine.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2005年第4期390-394,共5页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金重大项目(No.50490270)教育部科学技术研究重大项目基金(No.10405)
关键词
软岩
支持
锚网
数值模拟
大变形
soft rock
support
bolting system
numerical simulation
large deformation
