摘要
结合地下工程破裂岩体特点,采用“非连续变形分析(DDA)”计算程序,首次定量研究了非连续围岩体位移影响因素的变化规律,根据计算结果提出了地下工程支护“关键部位”的概念及其稳定性判据,指出非水平煤岩层地下工程围岩上帮及底板,尤其是上帮为支护的“关键部位”。
On the basis of the characteristics of surrounding broken rock mass of underground constructions, by using the program of discontinuous deformation analysis (DDA), the changing law of influential factors on displacement of discontinuous broken rock mass is studied quantitatively for the first time. According to the results of computing, the concept of key part of underground constructions and its stability criterion are brought forward. It is pointed out and it has been advanced that in tilted coal and rock seams, the key parts of underground constructions are the floor and especially the upper side of surrounding rocks.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2003年第8期1281-1286,共6页
Chinese Journal of Rock Mechanics and Engineering
关键词
地下工程
破裂岩体
位移
非连续
围岩
Deformation
Numerical analysis
Stability
Underground buildings
