| The highway from Huangling to Tongchuan cross the Taoqupo reservoirs and theQishui River Liuwan water protected areas. Although in the road building programstake full account of the water source protection requirements, the road water sourcewater quality and safety of the operation would cause a potential impact, especiallyroad transport in the sudden pollution incident will paint the Qishui River Liuwanwater pose a significant threat. This thesis analyses the environmental impact ofhighway operation by Investigating and evaluating the topography, the geologicalconditions and the Water Environment of the second water protected areas. On thisbasis, it proposes the environmental protection program of water source areas. Thesame time, the road acrosses the Qishui River many times, which length is about4.5km, and set Interchange in K49+580, and the transport of dangerous goods on thewater quality of the Qishui River causes potentially dangerous.This thesis uses thedegree of risk to evaluate the impact of transport of dangerous goods for the QishuiRiver Liuwan water source.The results show that the probability is very low about a major accident maycause water pollution which operation of the transport of hazardous chemicals in thewaters sections of Qishui River. However, considering the mountainous terrain andtraffic in northern Shaanxi energy and heavy chemical base products, as well as thehighway increased accidents transporting dangerous goods in recent years, the riskeffects of the accident is an objective exist which the road in the operation period ofthe Qishui River water source. Therefore, it is necessary to take the water of a majorpollution emergency treatment plan. According to the preliminary location of the damsite, the study calculate the selected dam site location arrival time to reach theconcentration and the need for the capacity used the pollutant dispersion in themathematical model of the one-dimensional steady-state flow of pollutants. MadeTongHuang Highway and the second protected areas of Qishui River water with linesegments downstream to a protected area build the accident prevention dam,intercepte sewage to ensure that sewage does not enter the river in order to ensure the safety of drinking water in Tongchuan City residents. Provide a theoretical basis forroad construction and water source protection and engineering technical support.From the view of water source protection, the pepole should implement thisarticle of the water source protection measures and put forward opinions andsuggestions in the construction of a sudden pollution interception dam to effectivelycontrol adverse effects of the water source. |
