Abstract: When measuring the air quantity by the wind speed method,due to construction of the support,the wind current in the roadway will be changed.It will result in a large measurement error and affect the accuracy of mine ventilation safety evaluation.In this paper,this problem is resolved.An arched roadway is taken as an example.First,the test points and the corresponding sensor installation positions were determined by using the improved Chebycheff method.Then,a roadway simulation model was built for analyzing the influence of the support on the wind flow distribution by simulation.The wind velocity contours,speed scatter plot on the test line and the wind speeds at the wind measurement points were obtained.A wind speed error compensation equation was obtained from the simulation data to correct the air quantity measurement values.Finally,the results of simulation analysis and error compensation equation were verified by experiments.The research shows that construction of the supports makes the wind speed of each test point increase,causes a relative error of air quantity of 6.5%-6.8%,and the error will be reduced to 0.5%-0.6% by the error compensation.

Key words: arched roadway, wind measurement point, support, wind speed, wind distribution, error