TBM通过部分断面开挖段的状态监测与分析

锦屏二级水电站一号引水隧道进入岩爆区,在国内没有进行部分断面开挖的先例,为确保设备安全和工程按期完工,经过专家论证,决定进行断面施工.断面开挖要进行状态监测,对主梁,主轴承等关键部件进行振动加速度、振动速度、应变等信号的提取,来确定机器的状态.试验证明:部分断面开挖工况下,偏载情况确实存在,但测试优化后的掘进参数对设备...

State Monitoring of the TBM Through the Partial-Faced Excavated Section

The first water tunnel of the Jinping Stage Power Station goes through the rock burst area,in which case the partial faced excavation method has never been applied before.Upon the basis of the verification of experts,it is decided to apply the partial-faced excavation method to the project to ensure the safety of equipment and the completion of the project as scheduled.However,when the partial-faced excavation is conducted,the state monitoring has to be performed,with the values of the vibrating acceleration,the vibrating rate and strain of the main beam,the main bearings and other key components collected to determine the state of the machine.Tests prove that when the partial-faced excavation is performed,eccentric loads do exist.However,the optimized parameters are found to have very little effect on the equipment,and therefore can ensure the normal operation of equipment,and ensure the equipment to be in good condition.This test of the excavation has not only made a useful exploration into the excavation under high stress conditions,but also serves as a useful reference and provides useful experience for other tunnel projects of similar geological conditions.