| He gang is one of the national important coal base, since1918, coal mining, now in morethan10million tons of coal mining. Coal gangue is in the process of coal and coal seamaccompanying a low carbon content, relatively hard black rock, in the process of mining andwashing is separated out, become a waste. General nearby piled up around the mining area, ahuge coal gangue mountain or mine. Is the largest emissions in industrial waste residue andcovers most, one of the solid waste of serious environmental pollution.Linear engineering, highway engineering construction is a large volume of coal gangueused for highway roadbed filling, both in terms of economic benefits, social benefits andecological benefits into consideration are beneficial, and in some domestic highway havesucceeded in getting the application. But due to the complexity of gangue its physical andchemical composition, and the engineering properties of different producing area of coalgangue with different and road performance. Each detection index and coal gangue as subgrade filling material, the basic performance, testing method and construction requirementsare no corresponding standard basis, therefore has not been used as roadbed filler on thehighway accumulates promotion. At present, the coal gangue in the use of filling the roadembankment in regional, subjectivity and empirical, lack of regional system of scientificresearch and theory summary.In Harbin to Zhao Xing soup was bound to he gang section reconstruction projectconstruction as the background, through the indoor experiment and field test, in he gang coalgangue as a highway sub grade filling the raw material test, construction technology,including the selection of raw materials, construction, coal gangue and soil roadbed rolling),such as construction quality control index for in-depth research, scientific data andconclusions, for later coal gangue as sub grade filling in wide use in highway engineeringusing the provided basis and reference. |
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