过水隧洞底板抗冲耐磨混凝土施工综合措施研究

Research on Comprehensive Measures for Construction of Erosion and Abrasion Resistance Concrete for Bottom Slab of Overflow Tunnel

过水隧洞,如水电站导流洞、排水洞、泄洪洞、引水洞等,其底板在运行期间受水流、推移质等冲刷影响较大,为保证工程运行安全,目前大多过水隧洞底板混凝土采用抗冲耐磨技术。结合部分工程成功经验,抗冲耐磨混凝土仅从提高材料性能单方面不足以保证工程运行安全,还需要采用其他综合施工措施。

Overflow tunnels,such as diversion tunnels,drainage tunnels,flood discharge tunnels,diversion tunnels,etc.,have a large impact on the floor slab scouring by water flow and bed load during operation.In order to ensure the safe operation of the project,the anti-scour and wear-resistant technology is mostly used for the bottom slab concrete of overflow tunnel at present.Combining with successful experience of some projects,antiscour and wear-resistant concrete can not only improve material performance unilaterally to ensure safe operation of the project,but also need to adopt other comprehensive construction measures.