关键词: 大采高, 超前支承压力, 深孔注浆, 防片帮

Abstract: In this paper, 1307 large height woking face in Zhaozhuang mine is appointed as the research background. The measures taken at the present stage to control the rib spalling and its shortcomings are summarized. Secondly, by analyzing the conditions of advanced abutment pressure, the uniaxial and triaxial compress experiment plan is made to explore the time of cracks in the coal begin to proliferate to determine the chance of grouting. Thirdly, problems such as the arrangement of grouting drills, grouting material and the longhole grouting sealing technology are analyzed to form a scientific and feasible scheme. At last, grouting effect is evaluated after the completion of the construction. The result shows that grouting has a remarkable effect and is beneficial to economics and safety.