Before commissioning,channel jointly debugging of fiber-optic relay protection has become an another important adjustment item besides debugging of single protective equipment and experiment of relaying protection.

Feasibility research of using the cross-passage to exhaust smoke;

The model for calculating the critical velocity in a tunnel cross-passage is established on the basis of the critical Froude theory.

Based on the analysis of disadvantages of routine estimate for artificial frozen soil boundary and the comparison of dielectric properties differences between artificial frozen and natural soil,experiments on estimating the boundary by means of ground penetrating radar(GPR) were discussed for the cross-passage construction of Shanghai East Fuxing Road Tunnel engineering.

Design and practice of freezing method applied to connected aisle in tunnel under complex conditions;

Numerical analysis of freezing soil curtain of tunnel connected aisle;

3-D numerical simulation of frozen construction of a connected aisle in metro;

By considering deflection of freezing pipes and using the FEM method,the three-dimensional temperature field of the connecting passage of Shanghai Eas.

General condition of the connecting passage for the shield tunnel in Nanjing metro line 1 is introduced.

The application of horizontal freezing method in construction of connecting passage of soft soil stratum between Guoquan road station and Wujiaochang station of Shanghai No.

Numerical calculation of tunnel cross passage construction underneath river;

Steel string strain gages were installed in the segments in order to monitor the stress variation in the segments due to the excavation of a cross passage in a Beijing subway shield tunnel.

The construction of cross passage after finishing the main tunnel will bring some dangers to the main tunnels.

There are much less for parallel channels.