用明挖法施工的地铁车站的下列部位存在自然形成的围合空间及剩余空间： 1）车站小端的附属与主体之间； 2）中间站设置的配线上方的剩余空间； 3）换乘站设置联络线时，联络线与车站之间的围合空间； 4）地下深埋车站的地下一、二层的剩余空间。目前，地铁的建设和运营成本均较高，应对上述围合空间进行合理利用： 1）作为设备用房或备用房间，减小车站投资； 2）进行适度商业开发，作为地铁运营的补贴。如果不利用这些空间，对相应空间进行空置或回填，将会： 1）形成永久的死空间； 2）可能增加车站的围护结构、主体结构和土方回填等土建费用； 3）地下空间开发的不可逆性，若不与车站同期开发，后期再想改造非常困难。本文通过对围合空间利用存在的技术、经济问题的研究，表明利用围合空间及剩余空间具备较好的技术经济效益。

Surrounded space and remaining space naturally exist at the following positions of cutandcover Metro stations: 1) Between the ancillary structure and the main structure at the small end; 2) Above the auxiliary line of the intermediate stations; 3) Between the connecting lines and the transfer stations; 4) B1 and B2 floors of deep Metro stations. At present, the construction and operation costs of Metros are high, therefore it’s necessary to use the abovementioned surrounded space and remaining space rationally: 1) The space can be used as equipment rooms or spare rooms, so as to reduce the investment of the Metro station; 2) The space can be used as commercial area, the revenue of which can be subsidies for Metro operation. If the space cannot be used, the space will be vacant or will be backfilled, which has the following disadvantages: 1) Permanent dead space will be formed; 2) The cost of the civil works related to the retaining structure, major structure and backfilling may be increased; 3) When the construction of the Metro station is completed, due to the irreversibility of the development of underground space, it will be very difficult to renovate the Metro station so as to use the abovementioned space. In the paper, the technological and economical issues related to the use of the abovementioned space are studied, which shows that the use of the surrounded space and the remaining space has good technological and economical benefits.