关键词: 窄煤柱, 巷道支护, 巷道变形, 矿压观测

Abstract: In order to analyze the rationality of 10 m width narrow coal pillar between 3411 working face of 3408 working face of a coal mine,combing with the working conditions of the mine,the mine pressure observation scheme is designed.The observation analysis results show that during the opposite excavation period of the transportation grooves of 3411 working face and 3408 working face,although the deformation of roadway is significant,it can meet the requirements of underground production to roadway section;under the condition of proper supporting,the roof separation phenomenon of roadway is not obvious,the surrounding rock mass of roadway is basically stable,the supporting state of anchor rod (rope) is good,the deformation of surrounding rock can be controlled effectively.The comprehensive study results indicated that the scheme of 10 m width narrow coal pillar between 3411 working face of 3408 working face of the mine is feasible under the exsiting production conditions.

Key words: Narrow coal pillar, Roadway supporting, Roadway deformation, Mine pression observation