高家堡矿井大流速自流水地层冻结技术初探

Initial Discussion on Large Velocity Artesian Ground Freezing Technology of Gaojiapu Mine

高家堡煤矿位于陕西省彬长矿区西北部,其主井井筒穿过白垩系地层厚达668.5m,其中洛河组地层厚达371.28m,该地层具有厚度大、富水性强,水压大的特点。高家堡主井井筒采用冻结法施工,通过该井筒冻结施工,积累了我国西部类似大流速地层冻结施工经验。本文对该井冻结施工方案和冻结施工期间遇到的问题做一简介,并试对同类地层下冻结方案的优化进行探讨。

Gaojiapu coal mine is located in the northwest of Shanxi Province in Binchang mining area , the main shaft through the Cretaceous strata thickness up to 668.5m ,among them the Luohe strata thickness up to 371.28m ,the strata has large thickness ,rich water ,large water pressure.Gaojiapu main shaft using freezing method construction ,through freezing the shaft construction ,accumulatio-ning the west of our country freezing construction experience similaring as high velocity strata ,this pa-per has a introduction about the freezing construction scheme and problem during the freezing con-struction ,try to discuss how to optimize freezing scheme of similar strata.