曲江倒虹吸跨活动断裂抗错断设防参数研究  

Study on fortification parameters of anti-fracturing design of Qujiang inverted siphon in cross-active fault area

作　　者：米健 沐红元 MI Jian;MU Hongyuan(Yunnan Investigation,Design&Research Institute of Water Resources&Hydropower,Kunming 650021,China)

机构地区：[1]云南省水利水电勘测设计研究院,云南昆明650021

出　　处：《人民长江》2021年第5期108-113,共6页Yangtze River

摘　　要：跨活动断裂的建筑物极易发生错断破坏,抗错断设防是跨活动断裂建筑物设计的重点和难点问题。根据对我国西部地区走滑断裂引发的历史强震资料的分析,建立了震级与破裂长度、最大水平位移之间的拟合关系式,同时对曲江断裂未来百年内最大突发地震地表水平位移和垂直位移、变形带宽度以及蠕滑位移进行预测,并提出了曲江倒虹吸的抗错断设防参数建议值。结果表明:曲江断裂未来百年内最大突发地震地表水平位移量和垂直位移量分别为1.02 m和0.19 m,变形带宽度为300 m;未来百年内蠕滑水平位移和垂直位移分别为0.34~0.51m和0.06~0.10 m。研究结果对曲江倒虹吸跨曲江断裂抗错断设防参数取值具有参考价值。The buildings in active fault area are prone to destruction,the anti-fracturing fortification is an important and difficult problem in the design of cross-active fault buildings.According to the present seismic activities initiated by strike-slip fault in western China,the fitted formulas between the earthquake magnitude and the rupture length,the maximal horizontal displacement were established.And the surface horizontal and vertical displacement,deformation belt width and creep displacement of Qujiang fault caused by the maximum earthquake in next 100-years were forecast,and the parameter recommended values of anti-fracturing fortification of the Qujiang inverted siphon were proposed.The results show that the maximum seismic surface horizontal displacement and vertical displacement of Qujiang fault in the next 100 years are 1.02 m and 0.19 m,the deformation zone width is 300 m,and the horizontal and vertical creep displacement in the next 100 years are 0.34~0.51 m and 0.06~0.10 m,respectively.The results can provide reference for the anti-fracturing fortification parameters of Qujiang inverted siphon in cross-active fault area.

关 键 词：活动断裂 抗错断设防 震级 地震破裂带 位移 曲江倒虹吸 滇中引水工程 

分 类 号：TV221[水利工程—水工结构工程]