关键词: 新中段开拓 支护率 超前探水 一次成巷

Abstract: New midstage development project of the Duancun Leigou bauxite is large,and the engineering geology and hydrogeological conditions are complex.In order to speed up the construction progress and to save the project cost,analyze the main problems in the construction process of the development roadway during the infrastructure period,combine the research results of the hydrogeological conditions of the mining area,put forward to change the location of the development roadway in the new midstage development project from the invein arrangement to the outofvein arrangement,to strengthen the advanced waterexploration through the introduction of highdensity electric method,to cooperate with the development engineering and mining,to achieve a roadwaymaking once through the selection of supporting equipment during the production period,the implementation of optimization measures can effectively reduce the roadway support rate,speed up the progress of the new midstage development project and ensure the safety of construction,for similar mines have an important reference significance.

Key words: new midstage development,support rate,advanced waterexploration,roadwaymaking once