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某线5号隧道全长412米,原设计在f=4～6的白云岩中穿过。施工后距峒口(16+936)104米处(17+040)右侧,出现一条沿着隧道的纵向断层,在17+145左侧离开隧道,断层全长105米。断层与隧道中线交角10°左右,断层倾角50°左右,断层内有局部地下水活动。断层地质情况大致上分为两段,17+040至17+104断层厚度从0.8米逐渐扩展到3-4米,断层内除了岩石破碎外,夹有一层0.4～1.2米的断层泥,17+104至17+145断层中除了两侧岩石较破碎外,还填充有大量松散
A certain line of tunnel No. 5 412 meters in length, the original design in f = 4 ~ 6 through the dolomite. After the construction, to the right of 104 meters (17 + 040) at Yingkou (16 + 936), a longitudinal fault appears along the tunnel leaving the tunnel on the left of 17 + 145 with a total length of 105 meters. The fault intersects with the center line of the tunnel about 10 ° and the dip angle of the fault is about 50 °. There is local groundwater in the fault. The fault geology is roughly divided into two sections. The thickness of the fault from 17 + 040 to 17 + 104 is gradually extended from 0.8m to 3-4m. In addition to the rock crushing, the fault has a 0.4-1.2m thick fault mud and a 17 + 104 to 17 + 145 In addition to the broken rock on both sides of the fault, a lot of looseness was filled in the fault