Old dam structural joint seepage underwater repair method: Fid-Bau Portal

Old dam structural joint seepage underwater repair method

JIA JINSHENG / ZHENG CUIYING / SHI WANLI / ZHAO CHUN / ZHANG HUIWEI / ZENG XIANCAI

The invention discloses an old dam structure joint seepage underwater repair method, and belongs to the technical field of water conservancy projects. A hole is punched between an original dam body structure joint copper water stop and a plastic water stop, a flexible grouting material is poured into the hole, a new water stop is formed from bed rock to a dam top, a grouted flexible grouting material can block a seepage channel around the original copper water stop and the plastic water stop, a water stop formed by the flexible grouting material forms a three-waterproof system with the copperwater stop and the plastic water stop, the water stop formed by the flexible grouting material, the copper water stop and the plastic water stop jointly form a complete three-closing water stop system, a water stop system of an original structural joint is recovered and perfected, and thorough seepage stop is achieved.

本发明公开了一种老坝结构缝渗漏水下修复方法，属于水利工程技术领域。本发明在原坝体结构缝铜止水与塑料止水之间打孔灌注柔性灌浆料，自基岩至坝顶形成一道新的止水，所灌注的柔性灌浆料还可堵塞原有铜止水和塑料止水周边的渗漏通道，柔性灌浆料形成的止水不但与铜止水和塑料止水一起形成三道防水体系，并且柔性灌浆料形成的止水、铜止水和塑料止水一起形成一个完整的三道闭合止水体系，使原结构缝的止水体系恢复并完善，彻底止住渗漏。

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