Research On Safety Technology Of Inclined Shaft Construction In Coal Mine

In recent years,with the rapidly development of the domestic economy,the development direction of China's coal mining tends to be deeper and wider.However this directly leads to the severe safety hazards for the shaft construction in coal mine.How to take reasonable measures to control the risk factors in the construction process has become an important research point.Combining with the safety control of the inclined shaft construction process of Jinggong No.3 Mine in the city of Shuozhou in Shanxi province,this paper proposes the suitable safety measures and drawed the conclusion for the shaft construction in coal min.The research contents are as follows:(1)According to the fracture surface and surrounding rock grades for the inclined shaft,the middle pilot tunnel drift method was used for excavation.The arch fracture surface was adopted for the main inclined shaft and curve fracture surface was adopted in the special condition.(2)According to the local geographical geology environment,the bolt support as the most popular active support was used.(3)The reasonable blasting method was researched and adopted,and the best way to save the blasting amount was put forward.(4)According to the maximum muck capacity,the inclined shaft and muck was designed,and then tunneling ability and ability ability are greater than output so that transport capacity in the process of tunneling was met.(5)The ventilation system was designed for the inclined shaft in order to supply the suffient oxygen and exclude the iust particles in the process of tunneling in the working area;the mixed mode of full pressure ventilation,ejector ventilation,and partial ventilation was used to ventilate the constructionarea;the entilation volume was calculated to confirm a relevant economic ventilation mode on the basis of safety.