地下水封油库工程中三维地应力测量及其应用  

3D IN-SITU CRUSTAL STRESS MEASUREMENT AND ITS APPLICATION TO UNDERGROUND WATER-SEALED OIL STORAGE CAVE ENGINEERING

作　　者：郭书太[1] 崔少东[1] 王成虎[2] 孟静[3] 谭成轩[3] 

机构地区：[1]中国石油天然气管道工程有限公司,河北廊坊065000 [2]中国地震局地壳应力研究所,北京100085 [3]中国地质科学院地质力学研究所,北京100081

出　　处：《地质力学学报》2016年第1期114-124,共11页Journal of Geomechanics

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.

关 键 词：地下水封油库 三维地应力测量 油库围岩稳定性 

分 类 号：P553[天文地球—构造地质学]