深圳罗湖断裂带黄贝岭F8断层流变有限元分析

深圳是近20余年的时间高速建成的的新型现代化城市，成百上千座高层建筑坐落在罗湖断裂区域，因而研究罗湖建成区断裂带长期稳定性意义重大。通过对罗湖建成区两种典型的软弱岩石，含角砾泥岩和粉砂岩进行系统的室内流变实验研究，给出了适合罗湖破碎断裂带岩体的流变模型。选取罗湖断裂带轴部的核心断层——黄贝岭F8断层，运用得到的流变模型对黄贝岭F8断层的进行了长期稳定性计算。关键点的计算结果表明，在地面建筑物施工完成初期，断裂带将出现明显的竖直位移，竖直最大位移为7.797 6 cm , 水平位移最大值为0.950 1 cm。随着时间的延伸，竖直位移增量率由刚开始的每年0.63 cm降至0.21 cm；水平位移增量率由刚开始的每年0.047cm降至0.01 3 cm， 该断层对周边建筑的长期稳定性影响较小。

Finite elements analysis of rheological deformation of Huangbeiling F8 faultage in Shenzhen Luohu fault zone

Shenzhen is a modern city which developes quickly in recent twenty years, due to a lot buildings locating on the district, it has singnificant meaning to study the long-term stability of this area. A rheology model which suits to the rock mass of Luohu fault zone is proposed by laboratory experiments conducted to mudstone and sandstone, which are two representative soft stone of the Luohu Jiancheng district. Using the model, a long-term stability calculation has been conducted to the core Hangbeiling F8 faultage in the axial direction of Shenzhen Luohu fault zone. The result indicates that in the early day after the construction has been finished, there will be obvious vertical displacement in the fault zone. the maximal vertical displacement of main key points in the calculation section is 7.79 cm, and the maximal horizontal displacement is only 0.950 1 cm. As time goes by, After 15 years, the vertical displacement rate decrease from 0.63 cm/year at the beginning to 0.21 cm/year. The horizontal displacement rate decrease from 0.047 cm/year to 0.013 cm/year.,there will be litlle affection to the long-term stability of the faultage and buildings around..