摘要
通过对已有岩溶气爆塌陷实例的分析 ,提出了气爆塌陷的三个发育阶段 ,分别为正压形成阶段、土层破坏阶段、气压快速释放及塌陷阶段。根据岩溶空腔的发育特征 ,用波马气体方程式对水位恢复时气爆效应中所产生的附加力进行了描述 ,并提出了气爆塌陷的发育条件 ,还对正压气爆中土层的最大安全厚度进行了讨论。
By analysing the examples of air burst collapses, the paper presents the three stages of air burst collapse development, that is, the first stage (air pressure formation), the second stage (soil deterioration), and the third stage (air pressure release and collapse). In the paper, the authors use the Bo Ma ideal air equation to explain the formation of air pressure in the underground empty space when water pumping stops. Also, the conditions of the air burst collapse are described in the paper, and the largest for safe depth of no collapse in the soil is suggested.
出处
《成都理工学院学报》
CAS
CSCD
北大核心
2002年第6期686-689,共4页
Journal of Chengdu University of Technology
基金
国家自然科学基金重大研究计划项目 (90 1 0 2 0 0 2 )
贵州省科学技术基金项目共同资助
