Propagation characteristic of UHF radio wave in rectangle ,circle and arched tunnels is studied in this paper and the computing equation for attenuation constant is deduced.

Using analytical method and numerical method, the paper emphatically researches propagation characteristics of electromagnetic waves in circular tunnel, rectangular tunnel and arched tunnel.

Study on the influence to the cutoff frequency of semicircle-tunnel from the train;

Deformation monitoring and numerical simulation of shallowly-buried long-span double-arch tunnel;

Coupling analysis of surrounding rocks in double-arch tunnel by FE and BP neural networks;

Excavation scheme and construction sequence of double-arch tunnel under worse geological conditions;

On the construction waterproof and drain of partition in continuous arch tunnel;

The construction technology of accumulated body at the entrance section of Fuxi continuous arch tunnel;

Composite construction technology of Guixingdi double continuous arch tunnel;

Study on treatment schemes of an expressway multi-arch tunnel middle wall;

Construction of multi-arch tunnel at the V-grade surrounding rock with pilot method;

Numerical analysis and treatment of a collapsed middle drift for shallow multi-arch tunnel under unsymmetrical pressure;

The field test is made about the tunnel invert that combined with precast reinforced concrete slab and dry concrete.

In order to increase the construction speed to utilize the non-rail system effectively, a new construction technology of fast construction of tunnel invert using precast-slab has been proposed.