Applied Research On Entirely Decomposed Granite's Road Engineering Property Integrated With GIS In Zhanjiang

Entirely decomposed granite is researched in the Zhanjiang on Guangdong province basing on project of abnormal soil treating in Yuzhan Highway on Guangdong province. This thesis take entirely decomposed granite as subject investigated and study it by field investigation, laboratory essential road engineering testing, road engineering modification testing, mechanism analysis and establishing the regional entirely decomposed granite database based on GIS etc.(1) By knowing the engineering geology district, climatic condition and regional tectonics in the Zhanjiang area, this thesis research geologic formation and reformation of granite at span of K0+000~K33+100. It is important for understanding entirely decomposed granite's engineering properties by knowing the entirely decomposed granite's formation mechanism. Granite is weathered by physics action and chemistry. In particular the process is that Granite is broken up and its composed mineral is migrated, transferred and enriched by the function of temperature variation, atmospheric action and microbial action. This can establish foundation for understanding the entirely decomposed granite's road engineering property and modification research of entirely decomposed granite.(2) The entirely decomposed granite's road engineering property is studied by physical mechanic property test. It is significant for selection scheme of construction and quality control by understanding the entirely decomposed granite's road engineering property. Abnormal soil strata number at span of K0+000~K33+100 is 5-2 soil strata and 8-1 soil strata which soil character is granite's weathering product. Entirely decomposed granite's road engineering property is studied by knowing granite's character, formation mechanism and basic physical mechanic property test. Specific character of entirely decomposed granite's road engineering property is analyzed at span of K0+000~K33+100. This process establishes the foundation for modification research of entirely decomposed granite.(3) The reciprocity mechanism between kaolin sand and entirely decomposed granite and between lime and entirely decomposed granite is researched by kaolin sand soaked or lime into entirely decomposed granite test at span of K0+000~K33+100. The research course provide theory guidance for modification research of entirely decomposed granite and put forward kaolin sand and lime incorporation criterion and modification plan that suit local conditions in Zhanjiang. These studies have an engineering instructing effect on the Highway construction at span of K0+000~K33+100.(4) By summarizing the phylogeny, research existing circumstance and concrete applications in the other specialty of geographic information system (GIS). The database of distributing, basic physical mechanic property and engineering property of entirely decomposed granite is build based on the geographic information system (GIS). Utilization factor of the data of basic physical mechanic property and engineering property of entirely decomposed granite is enhanced by visualization showing of distributing, basic physical mechanic property and engineering property of entirely decomposed granite at span of K0+000~K33+100. So Intercommunion platform of data sharing is founded for similar engineering construction in Zhanjiang area in the future.