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为了研究穿黄隧道地基在地震和盾构机施工时震动引起砂层液化的可能性及防治措施,采用扰动样和原状样进行了液化试验和动力特性试验,研究结果表明:砂层在7度地震下的液化深度在17m内;在地震加速度amax为0.194g的作用下,隧道在深度30m处的非液化层,地震后最大沉降量约为11cm。该结果可供设计研究参考。
In order to study the liquefaction test and the dynamic characteristic test of the Huanghuang tunnel foundation caused by the earthquake caused by the earthquake and the prevention and cure measures of sand layer liquefaction during the construction of the tunnel and the shield tunneling machine, Under the earthquake, the depth of liquefaction is within 17m. Under the effect of the seismic acceleration amax of 0.194g, the tunnel is at a depth of 30m and the maximum settlement after the earthquake is about 11cm. The results for design and research reference.