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Taking the surrounding rock of deep-buried at the Jinping II Hydropower Station as the engineering background,the research of similar material and dosage in blasting model test are carried out,based on the scaling method of Froude,the specific parameters of the model materials is determined;through indoor test,different ratio of model material standard specimen was carried out by mechanical test,the mix of similar material is got to simulated the actual rock;base on the theory of explosive stress wave,the research of the similar quantity is carried out.The results shows:froude can be applied to the theoretical calculation of the similar material in the experiments;the acoustic velocity and the strength of the model materials decreased with the increase of water paste ratio;using gypsum,water,sodium phosphate polymer(1-0.62:0.55%) applied to deep marble similar material in laboratory model test;corresponds to the actual blasting engineering 500 kg, 800 kg of similar explosive dosage for
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (51274157) .
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The application of materials and construction methods must be based on the needs of the above principle. 3.
Fourth, Lingnan architects specialize in applying all kinds of materials and low-techonlogy.
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Introduction As a replacement for gaskets containing asbestos material, many researchers have studied the use of metal gasket materials.
Material and Method Stainless steel was used as a gasket material because of its effectiveness at high temperature and its resistance to corrosion.
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The Strange Case of Compacted Graphite Iron: A Remarkable Option with Unique Material Properties or an Unusable Alloy?
Moreover, instead of magnesium, it is also possible to control the shape of graphite with other materials (e.g. rare earths).
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Piezoelectric materials because their special ability to convert bwteen kinetic energy and electrical energy.
The reason of no observation of the electrode materials in the capacitor material is also discussed.
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Thus, it can be said that cyclic ABI provides a method to estimate the failure life of materials and it is capable of detecting prior damage in materials and correlate its failure life.
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Explosion-protection performance test After fill materials in the container, the lower the pressure we get the better of the explosion-protection material.
Fill the materials into the explosion box.
Fig 6.The curve when not filled with materials Fig 7.
We can know from the fig that the maximum pressure of the LPG explosion when filled with materials is about 50KPa far lower than not filled the materials.
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