shield driving

When normally driving, the driver can reversely rotate the motor rotating shaft to drive the wind shield to retract into the interlayer of the roof.

正常驾驶时，把电机转轴反转，带动挡风板缩入车顶夹层内便可。

Combining with the construction of shield driving out of the tunnel in the section between Qibao Station-Outer ring Station along Line 9 of Shanghai tunnel, the paper introduces in details the construction method of the liquefied nitrogen freezing adopted when water leakage occurs in the driving-out process.

文章结合上海地铁9号线七宝站～外环路站区间隧道盾构出洞的实际情况，详细介绍了盾构出洞过程出现渗漏水时采用液氮垂直冻结处理的施工方法。

Application of Construction Technology of Shield Driving in Underpass of Freeways

盾构法下穿高速公路施工技术应用

In order to control the floating of segment during large diameter shield driving under high water head and shallow covering soil, a single-liquid synchronous grouting process is adopted.

为控制高水头下浅覆土中特大径盾构推进时管片的上浮，采用单液同步注浆工艺。

With merits like wide applicable ground type, fast driving speed, satisfactory construction quality etc, earth pressure shield entry-driving machines have been widely used in metro tunnel construction in our country and have a good prospect.

土压盾构掘进机具有土层适应范围广、掘进速度快、工程质量好等优点，已在我国地铁隧道工程中普遍选用，具有较好的发展前景。

Application of shallow underground excavation method and shield driving method for urban subways

浅埋暗挖法和盾构法在城市地铁中的应用

The mechanical structure mainly includes body, head, shield, driving wheel and measuring wheel.

机械结构主要包括箱体、控制头、防护罩、驱动轮和测长轮五部分。