Coal Roadway Machines Digging Temporary Support Mechanism And Technology Research

Coal roadway is a service in the face of main roadway; it is the largest coal minetunneling. To improve the security environment in coal roadway, enhances the coallane tunneling mining efficiency, reduce the cost of development, is important tothe mine safety, efficient production.To analyze and summarize the factors affecting coal lane tunneling efficiency inthe aspects of supporting technology, equipment and geological conditions study thecoal lane tunneling working surface surrounding environment and end supportmechanization. Analysis of the coal roadway driving end properties of surroundingrock, rock structure, can support; the use of the main temporary support form andboring machine adaptability; temporary support structure and supporting effect.Analyzed and summarized according to Fengfeng Group Wutongzhuang coal mineMechanized Heading Face situation, the temporary support problems, do thefollowing:(1) Data collection, field investigation. Relevant information collected about theWutongzhuang coal mine210working face transport and groove, after the scene viewand consulting the technology personnel to understand the driving end temporarysupport status.(2) The tunneling working surface roadway surrounding rock loose circle testing.Ultrasonic testing method of Wutongzhuang mine210working face mining FengfengGroup, transport crossheading of surrounding rock loose circle test:210toiletry looserange: on the working face to help loosen range is1.1m; the other side loose range1.2m. In210working face of coal roadway for loosening range1.1m.(3) By the analysis of numerical simulation of tunnel digging, simulation of the210working face in the post without supporting conditions determine the road waydeformation, displacement and roof subsidence.(4) The temporary support improved design scheme using support: cyclicalternating mobile support method, a new design of support equipment, structure ofequipment, to optimize and improve the implementation of coal road way headingmachine, high efficiency, high quality.