摘要
基于大量实测信息 ,对承压水上开采煤层底板变形破坏过程中岩移、注水量 (渗透性 )等矿压显现的观测时序 ,进行Lyapunov指数的提取 ,并对其混沌性态进行了研究。实例分析表明 :煤层底板变形破坏过程中呈现出典型的混沌性态 ;另外 ,由于煤层底板渗透性指标的Lyapunov指数比岩移量指标大的多 。
In this paper, based on lots of measured information, the Lyapunov exponent has been extracted from displacement and penetrating water quantity (seepage property)in the process of deformation failure for coal floor influenced by mining on pressure bearing water, and its chaos character has been studied. The analysis of actual examples indicates that the typical chaos character has been demonstrated in the process of deformation failture for coal floor. In addition, because the Lyapunov exponent of the seepage index for coal floor is larger than the displacement index,the seepage index is more sensitive than the displacement when it is used to describe the deformation failure character for coal floor.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2002年第3期356-359,共4页
Chinese Journal of Geotechnical Engineering
基金
国家自然科学基金资助项目 (597740 0 1 )
