Grey Correlation Model of influence factors analysis of ventilation time in single-way tunnel
Abstract
Ventilation time is an important parameter in the process of heading face ventilation. Shortening ventilation time has great significance to improve the efficiency of tunneling work. Analyzing the influence factors affecting the heading face ventilation time and establishing the grey correlation model based on the ventilation time data of -118m single-way tunnel in a golden mine. Calculation of the correlation degree between the four influence factors are as below: blasting fume throwing length(X0), distance of air duct to tunneling face(X2), length of tunnel(X3), initial concentration of CO(X4), and going on evaluation on the sensitivity. Result shows that: Tunnel length and blasting fume throwing length are more sensitive to ventilation time in the four influence factors, distance of duct to the diving face is less sensitive to ventilation time, influence factors of initial of concentration is the least sensitive of all. Analysis result can create practical and instructive effect to ventilation work in single-way tunnel.References
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