Analysis on the gas pressure measurement result revision on the basis of gas loss quantity before bore being sealed;

For example,gas loss amount calculated is lower than actual value and its error increases with sampling depth.

Directional Drilling for Methane Drainage in Advance of Mining;

Controlling measures of methane and coal dust and ventilation method in fully mechanized excavation face;

Integrated control technology for methane in mining faces;

The Analysis of Geological Factors to the Existence of Coal Gas in the Sunan Coal Mining Area and Xutuan Coal Field;

Dilution process of the coal gas in the laneway with pressured-injection ventilation and extracted methods had been analyzed comparatively.

Influence factors of mine gas hydrate formation in surfactant solution containing coal;

Design and practices on network system of wireless sensors for mine gas monitoring and measurement;

Design on wireless sensor network for mine gas measurement;