通过对北京地下直径线大直径泥水盾构机典型故障的分析，提出了相应的处理办法和预防措施。同时通过对油样分析，有预见性地对盾构机进行维护保养，客观上使盾构机完好率得到了保证。并在施工过程中引入了“零库存”和工厂化管理等一套科学的设备管理理念及方法，提高了盾构机完好率，保证了盾构机的正常施工。

Based on the typical fault analysis of large diameter slurry shield of Beijing underground diameter, the corresponding treatment and preventive measures were proposed, these faults including cutter stuck, shield tail leakage, tail brush damage, segment erector failure, etc. Meanwhile, the shield was maintained in advance with predictability through the oil sample analysis, and the intact rate was guaranteed objectively. In the construction process, the "zero inventory"  and a set of scientific equipment management methods like factory management were introduced, making the intact rate of shield machine grow from 60 % to 85 % and even higher, so the normal tunneling progress was ensured.