When advancing and uncovering coal in roadway, better construction method is vibration shot, metal framework, borehole bleed-off and hydraulic hole, of which vibration shot is principal.

Using all coal digging methods as a reference,synthetical cutting through coal seam measure is designed.

In this article,the situation of cutting through coal seam in the main and auxiliary mine shaft is introduced,then the main factors of natural distressed zone formation are proposed,finally, the main reasons for cutting through coal seam outburst in the auxiliary mine shaft are also analyzed.

According to the shortage of the conventional seam opening methods and in combined with the actual problems of the seam opening outburst in Panbei Mine,base on the detail analysis on the outburst control measures at home and abroad and with the optimized borehole design,an rational outburst control result was obtained.

Mechanism and effect factors of gas and coal delay outburst in uncovering coal seam in cross-cut;

Based on the mechanism of gas and coal delay outburst and its influencing factors,the action of the influencing factors on the delay outburst in uncovering coal seam in cross-cut is expatiated.

This article studies the outburst risk when uncovering coal in crosscut one of the third coal layer in mine No.

This paper, taking raise tunnel and uncovering coal in crosscut as examples, made a numerical simulation of typical cavities' figure that had been left behind the coal and gas dynamic phenomenon by the method of RFPA-Flow based on the statistics and analysis of coal and gas dynamic phenomenon in this mine.

Therefore, firstly, this paper anatomized the physical structure and mechanic-al properties of coal-rock, seepage flowing regulations and properties of gas in c-oal-rock、and interactions between gas and coal-rock in theory; Then, built up the solid-fluid coupling mathematic model, and also simulated the uncovering coal in crosscut systematically by RFPA.