斜井穿越富水松散地层施工技术

Construction Technology of Crossing Rich Water Loose Strata in Inclined Shaft

针对斜井穿越含富水松散地层时,出现的涌砂及塌方现象,及时修改原有设计及施工方法,采用超前管棚支护、导水及壁后注浆等施工方法。阐述了超前管棚支护的设计、施工工艺以及施工要点,安全快速地通过了该段穿越含富水松散地层,取得了良好的技术、安全及经济效益,为此后类似地质条件下的施工提供参考。

Aiming at phenomenon of sand and landslides crossing rich water loose strata in inclined shaft,construction methods of lead pipe shed supporting,water conductivity and grouting behind segment have been adopted.The paper expounds the design,construction technology and construction key points of lead pipe shed supporting,which achieves good technical,safety and economic benefits,and provides reference for construction under similar geological conditions.