During right tunnel construction, displacement and deep settlement of left tunnel are monitored, and assistant protection measures are adopted including points grouting and erecting supporting.
施工右线隧道时，对左线隧道位移和深层沉降进行监测并采取选点注浆、架设支撑的辅助保护措施。
During right tunnel construction, displacement and deep settlement of left tunnel are monitored, and assistant protection measures are adopted including points grouting and erecting supporting.
施工右线隧道时，对左线隧道位移和深层沉降进行监测并采取选点注浆、架设支撑的辅助保护措施。
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