水电站枢纽工程孔板泄洪洞改建施工技术

Reconstruction Technology of the Spillway Tunnel with Orifice in the Hub Project of Hydropower Station

目前水电站的枢纽工程影响着水电站整体的安全,为改善其自身存在的隐患,文章提出水电站枢纽工程孔板泄洪洞改建施工技术。在泄洪洞改建工程中,进行混凝土浇筑施工、预应力锚索加固施工两部分,通过先进的测量技术、施工方法,对孔板泄洪洞的改建施工技术进行了深入研究和探讨,制定出一套适用于类似工程的改建施工技术方案。实例分析结果表明:在7个测点中,使用水电站枢纽工程孔板泄洪洞改建施工技术的工程变形数据均小于施工允许最大变形程度,证明孔板泄洪洞的变形程度均在安全范围内,结构稳定性良好。

At present,the hub project of the hydropower station affects the overall safety of the hydropower station.In order to improve its own hidden dangers,this paper proposes the reconstruction technology of the spillway tunnel with orifice in the hub project of hydropower station.In the reconstruction project of the spillway tunnel,the concrete pouring construction and the prestressed anchor cable reinforcement construction are carried out.Through the advanced measurement technology and construction methods,the reconstruction construction technology of the spillway tunnel with orifice is deeply studied and discussed,and a set of reconstruction construction technology scheme suitable for similar projects is proposed.The example analysis results show that among the 7 measuring points,the deformation data of the project using the reconstruction technology of the tunnel spillway with orifice is less than the maximum deformation degree,which proves that the deformation degree of the spillway tunnel wit orifice is within the safe range and the structural stability is good.