Combined with the engineering example of shield machine 5106 of Chongqing Subway Line 5 underpass Chongqing Line 1 and other buildings, this paper studies and analyzes the influence mechanism of the underpassing construction of shield tunnel on the city buildings, puts forward the corresponding tunneling parameters of the underpassing construction of shield machine and the thecnology measures of controlling stratum settlement.%文章结合重庆地铁5号线5106标盾构机下穿重庆地铁一号线等建筑物的工程实例，研究分析了盾构隧道下穿施工对城市建筑物的影响机理，提出了相应的盾构机下穿建筑物施工的掘进参数和控制地层沉降的技术措施。
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