According to the result of monitoringmeasurement and the test data of surrounding rock pressure , primary supportstress and structure internal force , analyzed the law of soft rock deformationin the extremely high ground - stress portion of baozhen tunnel , and adjusted therelevant construction parameter , that insured construction safety 根據(jù)現(xiàn)場監(jiān)控量測結(jié)果和對圍巖壓力、初支應(yīng)力、結(jié)構(gòu)內(nèi)力的測試數(shù)據(jù),分析了堡鎮(zhèn)隧道極高地應(yīng)力段軟巖大變形的規(guī)律,及時調(diào)整相應(yīng)施工參數(shù),確保了施工安全。