【摘要】 广泛分布于黄土地区的民居黄土窑洞表明,围岩土体中的黄土拱是承受荷载的结构单元。应用滑动线法绘出的土拱形状,已被实际观测资料加以证实。对黄土拱的承载力、整体稳定性进行了计算,揭示出现有的两种地层压力学说没有正确与缪误之别,只是各有其适宜的应用场合,其前提条件是整体稳定性是否满足。更多还原

【Abstract】 There are a lot of people inhabitancy caves locating in loess zone.The loess mass surrounding cave can be supported by loess arching formed in the process of excavation,which can maintain the stability of caves.The shape of arch in loess cave excavation was determined by the limit sliding line method and verified by the site measurement information.The bearing force of arch and stability parameter of wall rock was calculated by the limit sliding line method.It is shown that two kinds of earth pressure method determined loads on lining structure can be the same with the different suitable conditions.更多还原