为克服现有连续掘进技术的不足，提出一种包含铰接滑筒结构的盾构，相较于常规盾构，该机型需要一套可靠的、长距离、高负荷的大直径往复直线动密封结构。为验证往复直线动密封结构的稳定性和可靠性，开展铰接滑筒动密封的仿真分析和模拟试验。仿真分析结果说明，试验台第1道聚氨酯鼓形双向密封在预设的初始压缩率条件下，极限承压能力为0.45 MPa。通过试验模拟不同介质环境，试验加压0.5 MPa，往复运动累计测试长度超过4 000 m，试验结果表明，1道聚氨酯鼓形双向密封加3道填料密封结构的可靠性、耐用性满足要求。

To improve the existing continuous driving technology of shield, a new type of shield containing articulated sliding cylinder structure is proposed. Compared with the conventional shield, this type of shield requires a set of reliable, long distance, high load, and large diameter reciprocating linear dynamic seal structure. A simulation analysis and test of articulated sliding cylinder dynamic seal are conducted to validate the stability and reliability of the reciprocating linear dynamic seal structure. The simulation analysis results show that the ultimate bearing capacity of the first polyurethane drumshaped bidirectional seal in the test bench is 0.45 MPa under the preset initial compression rate. The test is conducted under different media environments, test pressure of 0.5 MPa, and reciprocating motion accumulated test length of more than 4 000 m, whose results show that the reliability and durability of one polyurethane drumshaped bidirectional seal and three packing seal structures meet the requirements.