In order to explore the appropriate method for checking drainage system in highway tunnel,based on classification of types of drainage system blockage for these operating highway tunnels,the field tests for inspecting the drainage system of highway tunnels have been carried out by using different inspection methods.The results have shown that the type of drainage system blockage can be divided into three types:silt or mud sand,concrete block or foreign body,scaling or crystallization,and the appropriate inspection method should be determined according to the silt environment.For the longitudinal drainage ditch,whenthe track crawling robot facing the serious silt or sand blockage environment,the drainage ditch should be cleaned first and then rechecked.When the water line is deep,the whole earth crawling robot should be used for inspection.When the drainage ditch is under the condition of no water or low water line,the inspection distance of HD periscope is about 20～40 m,but it has poor adaptability for small radius area.For the drainage pipe with diameter of 100 mm,the existing pipe crawling robot cannot meet the inspection requirements,and HD periscope or pipeline video detector is recommended for inspection.
关键词
公路隧道/排水系统/淤堵物/检查方法
Key words
highway tunnel/drainage system/type of blockage/inspection technology
维普
万方数据