The Practice And Research Of The Geological Defects Section Of Road Survey And Reinforcement Technology After Construction For The Highway

As a result of highway construction route is too long, in the design and construction phase of the investigation of highway construction, it is inevitable that local sections of the adverse geological conditions have not been disclosed, but treatment has not been buried down, for example, there is a small thick soft soil, rivers back to the old filling, or mined-out area, karst caves, underground river on the ground floor, and other adverse geological conditions on the ground following. If the highway would be built in the defective district of that should be treatment, but did not receive treatment for various reasons, the completion of the since then, rock stress environment in the defective foundation layer should be changed due to the roadbed and road surface and vehicle load, it will lead to a defective foundation of the "activation", so that the resulting surface deformation of the second, then caused by uneven settlement of the roadbed slope and the slope of the line changes, and caused by some road cracks, slab staggering and significant elevation changes , and so on. And the treatment the geological defects section of road after the completion of the highway opening is different from dealing with the weak and poor soil foundation before construction, not only the time is tight, the construction site is extremely limited, and the need to: (1) is not closed as far as possible the traffic does not affect the normal operation of the vehicle. (2) as much as possible to repair damage and a good layer of the original structure of the surface roads and other facilities. (3) to ensure comprehensive treatment of the shortest duration, lowest cost and optimal results.This paper is based on the full research for the case of the geological defects section of road for the highway, and combined with survey design and construction work of the road embankment reinforcement and disease management of the geological defects section of road for the Rizhao-Dongming Highway K219 +842- K220 +060. Geological features and road characteristics of the disease in the defects geological section of raod after construction for the highway have been studied, and in-depth analysis of the relationship have been Carried out between the consolidation deformation of the defects foundation and the structures embankment instability and road level destroy. Then put forward: (1) "to engineering geology and hydro-geological mapping survey to guide, the anti-push theory of roadbed for the physical and mechanical parameters of the main means of drilling (vertical hole and the combination of tilt-hole) and to verify the fine, establishment of a multi-causal factor in the dynamic interaction analysis of the evolution of the model to predict the roadbed geological circumstances in defects area at the time and in the future, "a comprehensive survey theories and methods of the defects geological section of road after construction for the highway; (2) the guiding ideology and methods of treatment that the ground, embankments and roads, vehicle load should be interaction as a whole, according to the cause of sub-section of the right medicine, practice on reinforced foundation design of the defects geological section of the road after the highway construction; the proposed design parameters for the strength, stability and deformation of the calculus value to roadbed; and the design and construction technology of the defects foundation and road reinforcement of the slant-hole grouting, not closed to traffic as far as possible.Research achieves the desired effect in conjunction with practice.