乌江渡水电站岩溶地区高压灌浆施工特殊情况的处理

Disposal Method for Special Condition in High Pressure Grouting Engineering at Karst Area

摘要:

乌江渡水电站扩机地下厂房防渗帷幕工程身处岩溶发育地区，工程地质条件复杂，地质构造以层间错动断层为主，并有部分陡倾角断层发育,岩层受构造挤压强烈，断层、节理、破碎带发育；水平岩溶、垂直岩溶发育。以此工程为例介绍了高压灌浆施工工艺，阐述了岩溶地区高压灌浆过程中出现的特殊问题并提出了处理措施。

Abstract:

The anti-seepage curtain engineering for expansion of underground building of Wujiangdu generating set is situated at the place where Karst is well development, which reflects the complex engineering geology conditions. Furthermore, the geological structure mainly consists of deflected faultage within strata, accompanied with some matrue vertical obliquity faultages, intensively extruded rock strata, mature faultages, joints, and fragmentation, mature horizontal Karst and vertical Karst. This paper takes this engineering as an example to introduce the process of high-pressure-grouting, and elaborates some special problems in high-pressure-grouting and puts forward disposal methods.