A statistical channel model of wideband UHF radio waves along rectangular-like mine tunnel;

The mine tunnel and the overall focus on local construction sites of thinking,from the three-dimensional visual clearly show to be shown the roadway and its focus on the site,to simulate the mine fire smoke in the tunnel in the scene to provide liquidity situation.

Based on the multi-section Nakagami distribution statistical channel model of mine tunnel for wideband radio wave, the bit error rate (BER) performance of multicarrier direct-sequence code-division-multiple-access (MC-DS-CDMA) modulation in mine tunnel was simulated.

Analysis on communication performances of DS-CDMA modulation technology in mine roadway;

With the non-line finite element method, the numberical value calculation on the stress and deformation of surrounding rock of deep mine roadways has been presented.

Nowadays support technology in deep roadway is an important topic and this paper analyses stable factors and example of deepoadway and achieves some effects.

For researching supporting technology problems of deep roadway,Continuity mechanics was applied to analyzing stability of roadway in deep mine by comprehensively analyzing status quo of supporting deep roadway and elastic and plastic displacement of surrounding rock of roadway were calculated.