Study Of The Natural Environment Of The Northwest Territories Highway Roadbed Relationship

The paper through the research of relations of natural environment andhighway subgrade in the Chinese Northwest Area, has analyzed naturalenvironment characteristics and influence factors of highway construction of theNorthwest Local;Has studied roadbed disease type and very influence factors ofthe Northwest Local; Has proposed the principle of prevents and controls and thehandling countermeasure of the common roadbed disease in the plan, the design,constructs and maintains and so on in the process of highway construction in theNorthwest Area, and has carried on the system elaboration to roadbed diseasepreventing and controlling countermeasure of three special soil area of the desert(stone desert), the loess and the halomorphic soil; Has carried on the proof tosubarea necessity of roadbed disease of Northwest Local, has produced thesuggestion of district principle and the method, has analyzed influence factors ofthree kind of main roadbeds disease division of the geological landform, theclimate and the soil texture, and has refined the symbol system of the division ofroadbed disease area.These search achievements will be helpful to further deepens to understanding of special physical geography environment and the social economy condition of the Northwest Area, has the certain instruction function to the research, the plan, the survey design, constructs and maintains of the Northwest Local highway; Northwest Area highway construction has been caused to adapt physical geography and the social economy condition of the Northwest Local through the research, helpfully carries on the highway construction according to the circumstances, reduces roadbed disease, improves road ecological environment, reduces highway security hidden danger, saves the project fund and benefits the posterity.