6.Ｒesearch on the application of Newton method insolving nodal wind pressure equation group in mine

Abstract:

Aiming at solving the problem of ventilation network in mine ventilation，the mathematical model of node wind pressuremethod was established． The matrix calculation software SCILAB was used to segment the node pressure equation group，and the New-ton method was introduced to solve the equation group． The calculation shows that the method is effective，compared with the loop anal-ysis method，the total time consumption is less，and can effectively avoid the results of the linear approximation method swing phenome-non，the amount of programming is small． The junction’s air pressure method does not assume the virtual circuit，which can easilydeal with the multi-source and multi-sink network problem similar to the goaf，and is more convenient to use in small and mediummines．

Keywords: resolution of ventilation network; junction’s air pressure method; Newton method; SCILAB