Abstract:
The article put forward the gas drainage technology of shallow bore closure to resolve the problem of gas overrun in high-gas and fully mechanized tunneling coal roadway,and analyzed the emission law of high gas and fully mechanized tunneling coal roadway,put forward the comprehensive measures of reducing the emission gas from falling coal by shallow bore at heading face and from both sides of coal roadway by shallow bore on both sides of coal roadway,and analyzed the mechanism.By using the combined method of field experiment and theoretical arithmetic,the article determined the drainage parameters of shallow bore at heading face and both sides of coal roadway of 15181 working face.The finding shows that the technology could resolve the the problem of gas overrun at high gas and fully mechanized tunneling coal roadway well,overcome the defect of original method and improve the tunneling speed significantly.