深圳断裂带现今构造活动性及其对深圳市输水隧洞工程地壳稳定性影响

从微震活动、断层位移监测、现今地应力测量等方面进行深圳断裂带现今构造活动性分析, 配合构造应力场三维数值模拟, 定量计算了深圳断裂带与输水隧洞交汇部位的现今活动量级范围以及输水隧洞不同地段轴向与最大水平主压应力夹角, 推算出深埋输水隧洞地段现今构造应力状态, 并结合地震活动性及其危险性、岩土体稳定性等研究成果, 运用模糊数学方法, 评价输水隧洞工程地壳稳定性, 为工程设计和施工提供依据. 

PRESENT-DAY STRUCTURAL ACTIVITY OF SHENZHEN FRACTURE ZONE AND ITS EFFECT ON CRUSTAL STABILITY OF WATER DIVERSION TUNNEL IN SHENZHEN

This paper presents the analysis of the present_day structural activity of the Shenzhen fracture zone in terms of the micro_seismicity, fault displacement monitoring and present_day crustal stress measurements. A numerical simulation of the present_day three_dimensional tectonic stress field was then used to make a quantitative calculation of the present_day activity magnitude range at the intersection between the Shenzhen fault zone and the water diversion tunnel, and the included angle between the axial orientations in different parts of the water diversion tunnel and the maximum horizontal principal compressive stress, and to infer the present_day structural stress state of the deeply_buried sectors of the water diversion tunnel. The research results both in seismic activities and risks and in rock and soil stability can be used by means of fuzzy mathematics to assess the crustal stability of the water diversion tunnel project, providing a basis for the engineering designing and construction.