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In ordering to improve the rockfil' compaction effect more better, this paper combines with the project experience and roller compaction test to analyze some factors affecting compaction of rockfills, such as rockfill characteristics and gradation, maximum grain size, construction machinery, rockfill thickness, maximum grain size, times of compaction, amount of water and so on. Summarizing the obvious...
This research establishes a comprehensive evaluation index system of economic security of land resource by using Delphi and AHP methods. An empirical analysis of Shanghai China is conducted. The conclusions are as follows. (1)The economic security of land resource is on the level of "basic security" in Shanghai from 1999 to 2006. In 2005 and 2006 the compound evaluation values are 62.9 and...
In south western China, soluble rocks used to be karstifled intensively and water and mud inrush becomes one of the most dangerous geological disasters when tunnel is constructed. Identifying all potentially dangerous parts in the geological profile along tunnel route and making risk evaluation for them using geological exploration data may help prediction work significantly further in construction...
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