W. Virgil Ping

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On the basis of reviewing the previous studies on empirical formulas of blasting air wave attenuation law, we solved the blasting air wave overpressures combining with the reality of the Daye iron ore mining project in China. Simultaneously, a model of medium-length holes blasting in mining tunnel was established, and the blasting air wave propagation(More)
In order to reduce the energy consumption and pollutant discharge in cement production, the sensing device used to acquire the gas of cement kiln has been developed, and the theory and method of calculating of energy consumption and pollutant emission quantity in cement production according to exhaust gas constituents has been researched. A cement(More)
The performance of subgrade generally depends on its load bearing capacity, which can be determined by the resilient modulus and the modulus of subgrade reaction. AASHTO pavement design guide (1993) suggested a theoretical relationship between modulus of subgrade reaction and resilient modulus of subgrade based on the assumption that the subgrade material(More)
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