摘要
地下水封油库是一种复杂的地下工程,在施工期间开展岩体原位应力三维测量,对设计的开挖和支护方案进行检验和复核,有利于设计优化和指导施工。采用水压致裂测量方法,在油库内南北水平、东西水平和垂直3个方向钻探成孔进行地应力测量,综合3个方向的地应力测量结果,计算确定三维地应力大小和方向。计算结果验证了设计所使用的勘察阶段地应力测量结果的可靠性,检验和复核了设计施工方案的合理性,并进一步评价了地下水封油库围岩稳定性。
Underground water-sealed oil storage cave is a complex underground project. 3D in-situ crustal stress measurement in the constructing process,which can be used to test and re-check for the design scheme of cave excavation and support,is advantageous to the design optimization and the construction. In-situ crustal stress measurements by hydrofracturing method in drilling boreholes along a three dimensional Cartesian coordinate system are conducted,and then the reliable 3D crustal stress magnitudes and directions are calculated from those measuring results. This 3D results examined the in-situ measurements at surveying stage used for designing,and verified the rationality of the design and construction scheme. In addition,the stability of surrounding rock of underground water-sealed oil storage cave was further assessed using the 3D results.
出处
《地质力学学报》
CSCD
北大核心
2016年第1期114-124,共11页
Journal of Geomechanics
关键词
地下水封油库
三维地应力测量
油库围岩稳定性
Underground water-sealed oil storage cave
3D in-situ crustal stress measurement
stability of surrounding rock of cave
