江口水电站帷幕线深层特大溶洞处理措施

根据江口水电站右岸6号坝段及灌浆平洞RA、RB单元深层溶洞的地质特征,并结合防渗帷幕设计标准要求,依据实际施工条件,经过分析对比,确定了处理措施,通过施工验证和成果分析对比,认为灌注水泥砂浆、水泥-水玻璃、水泥-膨润土浆液处理溶洞的方法正确,过程控制得当,施工参数合理,效果显著,具有实用性。

Treatment Measures for Ultra Large Cave Under Deep Curtain Line, Jiangkou Hydropower Project

In accordance with the geological conditions of the deep caves under Dam Section 6 and Unit RA and RB of the grouting adit on right bank of Jiangkou Hydropower Project as well as in combination with the specifications for design of the grouting curtain and the actual construction conditions, the treatment measures are finalized through analysis and comparison. The measures for treatment of the eaves by placement of cement mortar, cement-sodium silicate and cement-bentonite are proved proper through construction experience, result analysis and comparison. The treatment process is controlled properly, the construction parameters are reasonable and the treatment result is as exoected. Therefore. those treatment methods ft~r caw~ ~r,~ ,,ra~tio~l