Study on mining pressure behavior law and control technology of fully mechanized mining face under complex technical conditions

This paper takes the 33201 fully mechanized mining face of Bulianta Coal Mine as an example to study the behavior law of mining pressure in the fully mechanized mining face under complex technical conditions. This paper provides a detailed introduction to the pressure conditions under special geological conditions such as the initial mining period, valley crossing period, structure crossing period, mining period under large burial depth conditions, final mining period, and gob-side entry retaining period of the fully mechanized mining face. It has guiding significance for the future mining of similar fully mechanized mining faces.