Construction Quality Control Research Of Compacted Asphalt Concrete Core Wall Of Huangjinping Hydropower Station

After nearly half a century of development, the asphalt concrete core wall seepage technology in C hina has been gradually improved and widely used. However, due to unreasonable mix asphalt concrete, construction parameter control and measurement inaccuracies stakeout quality is not in place and other reasons caused by accidents still occur. To this end, strengthen research on asphalt concrete core wall of quality control is particularly important.In this paper, based on the project of Huangjinping Hydropower Station on Dadu River in Sichuan Province as the research object, the construction of roller compacted asphalt concrete core wall of a total of 381 layers, ending November 1, 2014, has completed 98 layers. According to the construction situation and a large number of tests for the construction quality of the asphalt concrete core wall control study. Specific content includes the following three aspects:Firstly, made of compacted asphalt concrete core wall construction quality control top-level planning. Particularity of roller compacted asphalt concrete core wall construction, quality control of the basic theory, combing the quality co ntrol system and organizational structure, specifically the construction quality control processes and procedures. Through the "measure" factor analysis, given for "5M1E" quality control model elements, so that the core wall quality control technology has been further improved.Secondly, given the specific methods used in the quality control of the project. According to the project site inspection results and statistical data, using the histogram, control chart method of dynamic quality control; comprehensive use of causal analysis diagram method and AHP method, the analysis to find the influence and the key elements of all levels of the construction quality of the heart wall factors, enhance the pertinence of solving this kind of problem.Finally, expounds the strategy of quality control in the construction stage of roller compacted asphalt concrete core wall. According to the test, given the asphalt concrete mix ratio; combining the construction situation and existing conditions of technology, and discusses in detail the asphalt concrete production, transportation, should be emphasized and paving and rolling process of key points and matters, Gives the construction process quality control measures and methods, and comparative analysis of the construction quality inspection results.Through the research, provide the basis for the engineering construction quality control, but also provided a reference for the similar engineering to solve similar problems has important theoretical and practical significance for improving the asphalt concrete core wall construction quality control level.