Evaluación del ruido ambiental generado por las actividades existentes en el desarrollo del proyecto doble calzada fundadores/ciudad Porfía etapa 1 (k2+450 sector rochela -k5+097 sector Porfía)

Abstract

This paper has been prepared based on research undertaken to evaluate and environmental noise generated within the Double carriage enhancement Project “Fundadores/Ciudad Porfía Section 1 (K2+450 Rochela Area -K5+097 Porfía Area), during the period studied (October 2017 to May 2018) in Villavicencio, Meta. In order to identify and establish the points for discussion and determine measurement times, it is required to use the procedure contained an established by the resolution 0627 of 2006. Three sampling stations were selected along the subject section mentioned above and geo-referencing was carried out on these stations. Noise monitoring was also performed at each station in periods of 2 hours with laps of 5 minutes during weekdays both working and non-working days during daytime and night-time. In addition, specific noise emitted by the machines in operation during working hours in periods of time of 12 minutes with laps of 3 minutes was assessed. The variables of wind velocity, temperature and relative humidity were also evaluated in this research. The reading of the data of the sonometer was achieved using QuestSuite Professional II software (trial version), which enabled the creation of a database in Microsoft Excel 2010. Subsequently, a statistical analysis was reached using the data obtained through the statistic package IBM SPSS Statistics 21, building a custom Latin square type model to explain the main effects affecting the main variable (decibels). Based on this, an analysis of variance was carried out by calculating the size of that effect. Calculation of descriptive statistics were made alongside, as well as benchmarks evaluating also the meteorological variables taken in the subject project. It was needed to generate two maps containing environmental noise using ArcGis 10.2 for a IDW interpolation (inverse distance weighting), followed by a multi-point value extraction which were used to specify the range of date and subsequently used Kriging Interpolation to generate an estimated surface containing a group of point contained in the different decibel levels gathered as well as their behaviour in the area. EVALUACIÓN DEL RUIDO AMBIENTAL…PROYECTO DOBLE CALZADA CIUDAD PORFÍA 16 Additionally, a map that explains the possible relationship of wind direction with the intensity of decibels presented was drawn up, using the Create network tool in order to generate the wind direction and its dispersion form in the area. In accordance with the noise levels obtained in the 3 sampling stations, it was determined whether the level of compliance of these, comply with the maximum permissible standards stipulated in the standards norms. Finally mitigation measures were proposed according to the results obtained.