Study On The Effect And Countermeasures Of Highway To Hydrological Ecology

Highway, as a fundamental and service industry, its construction greatly promoted the rapid growth of national economy, on the other hand, it produced a certain of negative effects on the hydrological ecological factors in a different form. Highway construction affects the hydrological ecosystem, and the diversification of the hydrological ecosystem influences the human environment. Therefore the problem of highway construction and the hydrological ecological problems are inseparable. Hydrological ecology has become a hot topic in the field of environment as an important research direction of the concept of sustainable development. Therefore, the research on the influence of and strategy of freeway on hydrological ecological has important theory value and practical significance.The research on the highway hydrological ecology is a new research topic and it could achieve its people-centered and sustainable development. Hydrological ecological factors are studied in this paper, including surface water, groundwater, soil, animal and vegetation, etc. Some effective countermeasures were put forward for hydrological ecological problems that may occur in the highway construction. Overall, the thesis mainly made the following findings:1) The article expounds the basic situation of the highway and its construction systematically, analyzes the domestic and foreign research progress of hydrology ecology and the future development trend, and points out the existing problems. It was proposed that highway hydrological ecological system had been taken as a research object, and discussed the hydrological ecological problems in highway construction and operation period.2) The qualitative or quantitative analysis and research had been carried out for different hydrological ecological factors, and the quantitative research mainly included: the water inflow and water quality of highway tunnel engineering; road surface runoff of three highway; the sewage treatment of 6 service areas in Xi’an-Hanzhong Highway; heavy metal pollution of 14 highway domestic and the lethal effect in animals.3) It had been done further study on the influence of tunnel engineering to the groundwater. The influence of the thickness of the lining and the coefficient of permeability on seepage field of surrounding rock was analyzed, and seven different tunnel seepage analysis model is established. Therefore, it is concluded that the relationship between the lining of the permeability coefficient and water inflow, and lining of the tunnel waterproof engineering scheme is presented.4) Through the scheme comparison for four different hydrological calculation method, considering local experience, reliability of the data and the analysis of the survey marks, to determine an empirical formula using traffic rain flood in Guizhou. The feasibility of solution and the accuracy had been made a further argument.5) Aiming at the effects of highway in drinking water sources reserve, the scheme on the collection section along the way to the water treatment system was put forward. Its technological process is: water- grille- match well- sedimentation tank(or emergency pool)- artificial wetland- the evaporation pool. The research result has been officially put into use in Renchi highway.6) In view of the disposal problem for the high toxic hydrocarbons, this paper through the experiment research, taking a high toxic aromatic organic pollutants as the research object, the degradation of combined coagulation pincers of precipitation method is put forward. The method is simple in process, low cost, good effect, has extensive application prospect in wastewater treatment.7) The idea on agricultural water injection or landscape environment recycle was put forward. On the one hand, it can ensure drinking water reserves should be not affected by road surface runoff pollution, filling in the blank of drinking water source reserves road surface runoff processing technology. On the other hand, the effluent of concentrated drainage treatment system can be used in farmland irrigation, realizing the recycling of water resources.8) Some indexes of the water from the centralized drainage water treatment device were sampled, monitored and analyzed, and the results showed its treatment rate over 83.17%, the effluent reached the wastewater discharge standards(GB3838-2002) Class Ⅰ standard. The results showed the line selection had been right and the design had been reasonable. The results could provide decision support for sustainable use of water resources and the harmonious development between man and nature and other targets.