在路的系统中路基路面的强度与稳定性同水关系十分密切。路基路面病害有多种

In the road system, the strength and stability of the roadbed pavement are closely related to the water. There are many types of subgrade pavement diseases, because there are many factors that cause disease, but its water function is one of the main factors. Therefore, in the design, construction and maintenance of subgrade pavement, we must pay great attention to subgrade pavement drainage engineering. Due to the influence of the water source on the underground pavement and roadbed, the water flow is roughly divided into water and groundwater, and the corresponding roadbed drainage is divided into underground drainage and groundwater. Surface water includes atmospheric precipitation (rain and snow), seas, rivers, lakes, canals and cisterns. Surface water can clean and penetrate the subgrade, destroying the stability of the entire subgrade, and may cause the phenomenon of hydrogen bombs. The penetration of water into the subgrade soil moistens the soil and reduces its secondary strength. The harmfulness of groundwater varies according to conditions such as upper water, groundwater, and interlayer water. In severe cases, freezing occurs, the inclined or inclined plane collapses, or sliding along the entire subgrade at the inclined bottom. Subgrade works mixed with expansive soil may be destroyed. The harm to the paving water can be expressed as reducing the strength of the paving material and causing the concrete joints and the soil beside the road. Due to the cleaning of sludge and high-pressure water caused by the moving load, the loading capacity of the paving base is reduced. In frozen areas, water during melting will cause an overall decrease in load capacity.

The strength and stability of the roadbed pavement in the road system are closely related to water. There are many diseases of road-based pavement, because he has many factors to form disease, but the role of water is one of the main factors, so in the design, construction and maintenance of road-based pavement, we must attach great importance to the road-based road surface drainage works. Because of the influence of water source on underground road surface and roadbed, the water flow is roughly divided into water and groundwater, and the corresponding roadbed drainage is divided into underground drainage and groundwater. Surface water includes atmospheric precipitation (rain and snow), sea, river, lake, canal and cistern. Surface water can be cleaned and penetrated the roadbed, destroying the stability of the entire roadbed and possibly causing the phenomenon of hydrogen bombs. Moisture penetrates the road-based soil to moisten the soil and reduces the secondary strength. The harmfulness of groundwater varies according to the conditions of upper water, groundwater and interlayer water. In severe cases, a freeze occurs, a tilt or tilt plane collapses, or slides along the entire foundation at the bottom of the tilt. The roadbed works mixed with the expanded soil may be destroyed. The hazards of paving water can be expressed in order to reduce the strength of paving materials, so that concrete joints and roadside soil. The loading capacity of the paving base is reduced due to the cleaning of sludge and high-pressure water caused by the moving load. In frozen areas, water during melting can cause an overall decrease in load capacity.

In the system of road, the strength and stability of subgrade surface are closely related to water. There are many kinds of subgrade and pavement diseases, the reason is that there are many factors that cause the diseases, but the role of water is one of the main factors. Therefore, in the design, construction and maintenance of subgrade and pavement, great attention must be paid to the drainage engineering of subgrade and pavement. Due to the influence of water source on the underground pavement and subgrade, the water flow is roughly divided into water and groundwater, and the corresponding subgrade drainage is divided into underground drainage and groundwater. Surface water includes atmospheric precipitation (rain and snow), sea, river, lake, canal and reservoir. The surface water can wash and permeate the roadbed, destroy the stability of the whole roadbed, and may cause the phenomenon of hydrogen bomb. The infiltration of water into the subgrade soil makes the soil moist and reduces the secondary strength. The harmful degree of groundwater varies according to the conditions of upper water, groundwater and interlayer water. In severe cases, freezing, collapse of sloping or inclined planes, or sliding of the entire Subgrade along the sloping bottom occurs. Subgrade works mixed with expansive soil may be damaged. The harm to the paving water can be expressed as reducing the strength of the paving material, making the concrete joint and the soil beside the road produce. Due to the cleaning of sludge and high-pressure water caused by the moving load, the loading capacity of the paving base is reduced. In frozen areas, water during melting causes an overall decrease in load capacity.