注浆与疏干在斜井防治水中的应用

Application of Grouting and Dewatering to Water Control in Inclined Shaft

在高峰锡矿探采斜井的建设中，采用了分段工作面水泥预注浆的方法防止涌水，但一些不能进浆的细小裂隙的残余涌水仍严重妨碍着掘进施工。为避免溶洞、断裂带等大开度空隙的涌水，减少细裂隙的残余涌水量，将工作面水泥预注浆与井内水平孔疏干联合应用，达到了加快掘进速度，节省治水工程投资的目的。

n the construction of a inclined exploratory and extraction shift in Gaofeng Tin Mine,a sectional cement pregrouting method was used to prevent the groundwater gush,but the residual water pouring from some fine fissures in which cement grout can′t penetrate still hindered the construction of the shift seriously in order to avoide heavy water pouring from lagre openings such as caverns and faults and reduce the amount of residual water from fine fissures,cement pregrouting at work face was jointly used in combination with horizontal hole dewatering in the shift,resulting in speeding up the excavation of the shift and saving investment cost for water control project.