为提高隧道行车视觉环境，实现内壁涂层亮化耐污对提升隧道运营安全与节能的促进作用，解决现有我国隧道品质提升缺乏内壁涂层技术选型依据的问题，开展基于隧道内壁污染机制和分布特点的涂层亮化耐污机制研究，并以接触角和反射率为主要指标，进行4种不同涂层材料的亮化耐污试验。试验结果表明： 在相同平整度条件下，材料接触角越接近超疏水接触角，耐污效果越好，并可使反射率保持在较高水平，在后期运营中具备较明显的易清洗优势，且清洗后的反射率与刚实施完成后的反射率接近，说明这类材料对提升公路隧道运营品质、降低运营成本具有积极的促进作用。
To improve the visual environment of tunnel driving
and the effect of brightening and pollution resistance of tunnel wall coating
on tunnel operation safety and energy saving, and provide a selection basis for
tunnel wall coating technology for improving tunnel quality in China, the
pollution mechanism and distribution characteristics of the tunnel wall are
investigated, and brightening and stainresistant experiments on four
coating materials are conducted based on the contact angle and reflectance. The
experimental results show the following: (1) Under the same flatness, when the
material contact angle is close to the superhydrophobic contact angle, the
pollution resistance is better, and the reflectivity can be kept at a high
level. (2) It is easy to clean in later operation, and the reflectivity after
cleaning is close to that after implementation, indicating that this kind of
material used for tunnel wall coating plays a positive role in improving the
operation quality of highway tunnel and reducing the operation cost.
