TBM洞内拆机一般是在隧道内修建大断面拆卸洞，安装桥式起重机拆机。大断面拆卸洞施工难度较大，施工工期长，成本投入大。为了缩短TBM拆卸洞施工及拆机时间，减小施工难度，以南疆铁路吐库二线中天山隧道TBM拆机为例，研究设计适应性更好的小车式电动葫芦+倒链起重系统。该系统采取在隧道拱顶布设锚杆来固定导轨和独立吊点。通过对拆卸洞结构原设计方案与优化设计方案进行比选，确定优化断面的结构形式和断面尺寸，优化后拆卸洞断面缩小1/3，施工难度降低，达到安全快速拆卸TBM的目的。

The TBM disassembling cavern is usually located in tunnel with large crosssection; and it has overhead traveling crane. The construction of large crosssection TBM disassembling cavern is difficult; the construction schedule is long and the construction cost is high. In order to shorten the construction schedule of TBM disassembling cavern and reduce the TBM disassembling time, a more adaptable hoisting system of electric hoist + inverted chain is developed in the TBM disassembling of Zhongtianshan Tunnel on the second line of TurpanKorla section of Nanjiang Railway. The anchor bolt is set on tunnel crown top so as to fasten the guide rail and independent hoisting points. The optimized type and size of crosssection structure of TBM disassembling cavern are decided by comparison between original design scheme and optimized scheme. The area of optimized crosssection of TBM disassembling cavern is reduced by 1/3; and the rapid TBM disassembling is reached.