摘要
利用统计损伤力学模型,通过一个空间表征时间的手段,提供了一种评价岩体由于工程卸荷作用而损伤劣化的途径。结合FLAC模拟结果,对某铁矿的高陡边坡的设计和调整方案的开采过程岩石(体)卸荷损伤的力学过程进行了分析,定量地得到了高陡岩石边坡工程在分布开挖过程中形成的卸荷损伤区的大小及其分布规律,并对现场的两种方案做了对比分析,证实了该方法的可靠性。
Based on statistic damage mechanics model and through special damage representing temporal history method,an approach was obtained to evaluate rock mass damage caused by engineering unloading.With FLAC modeling,high and steep rock slope excavation-unloading process of southern part of an iron mine was studied for the two mining schemes of designed and adjusted.The magnitude and distribution of excavation in stages induced unloading damage zone was quantificationally achieved and the results of two schemes were compared to approve the reliability of the approach.
出处
《电力勘测设计》
2007年第4期22-26,共5页
Electric Power Survey & Design
关键词
岩质边坡
数值模拟
损伤力学
卸荷损伤
rock slope
numerical modeling
damage mechanics
unloading damage
