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本文通过南陵县千山水库除险加固工程,分析了砾石坝基(坝体)渗漏成因、特点及原理。通过加固方案比较,对坝基采用高压摆喷灌浆方法并结合坝体粘土铺盖斜墙(加设土工膜)进行防渗处理。本文重点阐述了高压摆喷灌浆过程中灌浆方法、灌浆材料、灌浆压力的初步拟定和控制、浆液稠度的控制等内容,结合坝体防渗处理,彻底解决坝体坝基渗漏问题,效果显著,达到了预期目的。
This paper analyzes the causes, characteristics and principles of seepage of gravel dam foundation (dam body) through the reinforcement project of Qianshan Reservoir in Nanling County. Through the comparison of reinforcement schemes, the dam embankment is treated with high-pressure swing grouting method and combined with clay-covered inclined wall of dam body (adding geomembrane) for anti-seepage treatment. This paper mainly elaborates the grouting method, grouting material, grouting pressure in the process of high-pressure swing jet grouting and the control of grouting pressure, the consistency of grout and so on. Combined with the seepage control of dam body, Achieved the intended purpose.