A Study Of Environmental Monitoring Methods In Construction Phase Of Expressway And It's Application

This thesis has studied the difference between the environmental monitoring of expressway and routine monitoring of environmental pollution. Has carried on research according to different pollution characteristic of 3 construction phases. Has determined the factors being studied and their principles an reasons for adoption. Studies the frequency of monitoring, how to locate sensitive spots. Accident contingency monitoring, the principles of laying out factors, monitor and analytical methods in the laboratory, sediment monitoring and assessment on the environmental current situation are also studied. This research is divided into two large parts, laboratory monitoring analysis and theoretical research. The concrete technological route is: theory analysis according to pollutioncharacteristics of expressway , forming the preliminary thought--on the spotinvestigating--design monitoring plans--layout--sampling-transporting and keeping ------analysis and test --data processing------currentsituation assessment.Having investigated the pollution sources (water , air , noise ) along the line at the scene, atmospheric and noisy pollution sources are: bridge prefabricate places , explosion spot, makeshifts , site of earth cutting and discarded earth, the road bed, material pile, mixing and stiring stations etc. Water pollution sources are: construction encampments, bridge construction. Understands the laying out situation of every sensitive spot, every water body's function ,etc. Which have laid a solid foundation for the theoretical research.Then carries on the theory study and analysis study in the laboratory, has confirmed the monitoring factors, monitor frequency, how to lay out, sensitive spots' confirming principles.Proposes the best laboratory monitoring and analytical methods on the basis of analyzing other monitoring analytical methods. According to actual conditions of expressway construction project, it has adjusted monitoring according to the different phases of the project. During the first phase of the project, the frequency of water quality monitoring is once per month, the monitoring frequencies of the air and noise are successively once per month and 4 times permonth. And during the second and the third phase of the project, rate of water quality monitoring depends on the summer , normal and dry season, the rates of air and noise monitoring turn into once per season and 4 times per season, we should add pitch smoke monitoring. In lab analysis , the existing analytical methods have been improved. Especially for BOD , Imn , SS ,petroleum,which will save a large amount of manpower, material resources for the monitoring in the future.A large number of monitoring tasks have been done, which has submitted seasonal and annual monitoring reports for the World Bank's Environmental Protection Agency.