Study On Dynamic Consolidation Method In Coal Subground Practice

To the near year, the engineering example to use the offal of electricfactories -- coal as architecture-subground is more and more, and thecorresponding analysis and study is also more and more. The traditional methods to treat coal subground are usually costly, and its time limit for a project is usually long. All of the things do not adapt the modern architecture's high speed and high efficiency need.A new method that is dynamic compaction method has firstly been used to treat, the coal subground in the Qingdao economy and technology development zone. Compared with other methods, the dynamic compaction method is one of the most economical and the speediest method.Base on the practice, this thesis demonstrate that this method is feasible though the analysis and study on the examinations that are used in coal subground that is dynamic compacted. Then, we get some dynamic properties and basic dynamic index of coal subground that is dynamic compacted and summarize its some basic rules. For example, the hole ratio of the coal that is dynamic compacted is greater than 1 all the same; the coefficient of the dynamic compaction method is 0.55-0.60, etc.Of course, this method has many deficiencies. For the future, what we get should make we more better serve for the future' s apply than before.