摘要
选址在围岩条件较好的地下水封石洞油库工程,围岩失稳情况以洞壁局部块体失稳为主。为了分析洞室局部块体失稳的可能性,通过现场调查,按照块体理论,首先找寻可能形成的块体,然后确定块体的滑移方式,最后利用现场调查的各项参数计算块体稳定性系数,评价块体的稳定性。按照该理论,利用Unwedge程序进行分析计算,部分计算不稳定块体方量与实际块体塌落方量相比,计算值偏小,这主要为该程序计算的块体为关键块体。总之,分析结果与实际情况基本相符。
For the underground oil storage in rock cavern in good surrounding rock conditions,its local block instability is the main destruction type.In order to analysis the possibility of local block instability,the scene investigation is carried out to find out the possible block,confirm the sliding mode,then calculate the block stability coefficient with the investigated parameters,and evaluate its stability.According to the block theory,the analysis and calculation are made with ＂Unwedge＂.Compared with the amount of actual caving,part of the calculative amount is smaller,that is because the key block is calculated in the program.On the whole,the calculated results are basically conformed with actual conditions.
出处
《水利与建筑工程学报》
2012年第1期151-154,159,共5页
Journal of Water Resources and Architectural Engineering
