Research Of The Impact To Predictive Of Drilling Vibration And The Height Of Coal In The Funnel To Continuous Flow Method Prominent Prediction Means

Continuous flow method for coal roadway prominent prediction meanspredicting coal roadway is a prominent face of danger" line forecast " means capableof reflecting the real work of coal roadway in front of prominent party risk.Dynamicdesign of the previous exposure cuttings plugging gas technology,using drill cuttingsdischarged cuttings and anthropogenic plus to block gas gushing from theborehole,and the two parts,with the drill cuttings twist the lever to rotatetogether,forcing the borehole gas emission less resistance to the flow velocitysensor.Such sealing means and designed to operate not only simple structure,and toensure that the measurement is not affected when the gas flow connection of the drillpipe.However, this open-type gas dynamic sealing means cuttings prediction processa small part of the total gas may leak out of place is small gap between the closure capmeans and the borehole wall, the place in a static the basic situation is not under theleaks, but when drilling will occur when the vibration, will have an impact on itssealing device, designed to simulate the field experiment platform, and by measuringthe leakage rate to analyze the effects of vibration and the sealing device experimentalsealed capsules can effectively reduce the vibration of the impact of a suitablepressure;Another place to shoot cuttings flow out through the paper funnel cindermainly on the impact of its highly sealing performance,according to this part of thefirst gas flow patterns in loose coal,analyzes the dynamics of gas in open type cuttingsgas flow blocking device law,and the establishment of the flow of gas in an open-typeformulas dynamic gas sealing device cuttings transport,and laid the foundation for thiswork.First flow rate sensor used linear calibration flow and its output currentvelocity sensor using SPSS software to fit a linear relationship for the quantitativestudy of the effect of plugging the device provides a means of closure.Then,foranalysis of the data obtained coal dust hopper height suitable height.