摘要
本文针对采场底板的层状结构特征，建立了分析采场底板突水问题的结构模型。即，将破断前的老底视作板结构，破断后的块状体视作“砌体梁”结构。用板的极限分析理论求出了各种边界条件下底板的破坏极限荷载和形态及最大变形点位置。用Ｓ－Ｒ稳定理论分析了破断后底板块状岩体结构的稳定条件及范围。通过这种对采场底板结构系统性的力学分析。
A new calculating method for the mechanical behaviours of floors with underground water inrush inlongwall mining is proposed in this paper. The main floor under the influence of longwall mining can be considered asan elastic-plastic plate with various support conditions and the stability of the fractured plate can be analysed aVoussior Beam. Using the plastic limit theory of plates, the limit load of main floor and its largest deformation pointcan be obtained. By S-R stability theory,the stability conditions for the key blocks of the Voussior Beam of thefractured main floor also can be determined. These theoretical results are also important for the study on the water一inrush from floor in longwall mining.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
1995年第6期55-62,共8页
Chinese Journal of Geotechnical Engineering
基金
煤炭科学基金
关键词
采场
岩层
底板突水
断层突水
煤矿
water-inrush from floor,main floor fracture,voussior beam,S-R stability,water-inrush through foult.
