摘要
针对隧洞侧边不同位置的中、小尺度溶洞对城门洞型水工隧洞围岩应力、变形、塑性区以及隧洞支护结构受力特征的影响,采用有限元数值模拟方法进行了系统地数值试验.在系统数值试验基础上,根据溶洞对隧洞围岩应力、塑性区和支护结构受力的影响特征,提出了溶洞影响范围划分图,将不同距离和尺寸的溶洞分为强影响溶洞、有影响溶洞和无影响溶洞等三个等级,为施工中对不同溶洞的处理提供了一定的技术支持,对我国岩溶区的隧道和地下工程建设的科学化和定量化必将起到一定的推动作用.
The karst caverns tunnel problems with tunnel side different position in middle and small size are studied by finite elements numerically with the influence of tunnel surrounding rock stress, displacement, plastic zone and characteris- tics of support structure force for tunnel with the popular shape type water construction tunnel. Based on the numerical ex- perimentation,karst caverns influence sphere zone is divided into three level in different distance and size from the characteristics of karst caverns impact on tunnel surrounding rock stress, plastic zone and support structure force, including strong influence, influence and non-influence karst caverns, and it gives some technology support to different karst cav- erns treatment in construction and promotes scientifically and quantificationally the tunnel and underground construction in China karst cavern zones.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2013年第4期499-507,共9页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
西部交通科技项目(200831800030)
"十二五"科技支撑计划(2012BAJ17B01
2012BAJ17B02)
关键词
水工隧洞
既有溶洞
稳定性影响
数值试验
the popular shape type tunnel
existing karst caverns
influence of stability
numerical experiment
