The auxiliary shaft topsoil adopted ordinary construction and drainages in hygrometric well.

屯留煤矿副井井筒表土段采用普通法施工,利用井外降水井疏干降水.

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The thesis presents the application of surface pre - grouting to construction of auxiliary shaft in Yangliu coalmine.

本文介绍了地面预注浆施工技术在杨柳煤矿副井中的应用.

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The thesis presents the application of surface pre - grouting to construction auxiliary shaft in Yangliu coalmine.

通过对望峰岗矿井主井井筒地面预注浆施工中的主要难点分析,给出施工采用的对策.

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Inclination of the mine's auxiliary shaft may be attributed to both geological factors and mining disturbance.

本文分析了引起大黄山矿一号副井井筒偏斜的地质采矿原因.

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