摘要
根据地表下沉的3个阶段,分析了地表下沉速度的主要影响因素;以Knothe时间函数为基础,导出了适用于衰退期及其之后的下沉衰减函数,并提出下沉衰减函数中参数的确定方法.针对兖州矿区典型塌陷区不同的地质开采条件和现场实测资料,求出了典型塌陷区的下沉衰减函数和残余下沉量;最后提出了塌陷区稳定性评价指标和塌陷区稳定性分类方法,将塌陷区分为非稳定型、相对稳定型和稳定型,并对塌陷区进行了稳定性评价.
The main factor influenced the velocity of mining subsidence were studied based on the three subsidence stages. A modified Knothe time function was used to simulate the process of subsidence, and the method of certain parameters was proposed respectively. The attenuation function and residual subsidence to various mining scenaries of Yanzhou Coal Mine were calculated in terms of the mining conditions and field observation data. Finally, an evaluating system to evaluate stability of subsidence and subsidencing classification were presented to identify stability types, involving instability, relative stability and stability. Typical application at Yanzhou Coal Mine was evaluated according to it.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2009年第7期892-896,共5页
Journal of China Coal Society
基金
国家重点基础研究发展计划资助项目(2007CB209405)
“十一五”国家科技支撑计划资助项目(2006BAB16B00)
国家自然科学基金资助项目(50744044)
山东省优秀中青年科学家奖励基金资助项目(2007BS08024)
关键词
下沉衰减函数
塌陷区稳定性
开采沉陷
attenuation function of surface subsidence
subsidence stability
mining subsidence
