Study On Deep Coal Roadway’s Control Of Dynamic Destabilization In Heavy And Steep Coal Seam

To mine the Heavy and Steep Coal Seam,a multiple-level and sup-level caving has beenutilized in Da Honggou mine of Xinjiang Uygur Autonomous Region. With the increase ofmining depth, frequently coal roadway’s dynamic destabilization occurred in recent yearshave seriously theatened the safety and efficiency in production. Therefore, reseach on deepCoal Roadway’s control of dynamic destabilization in heavy and steep coal seam whichensure the safety and efficiency in production has important significance.As the Da Honggou mine’s501-level mining entry excavation for the project background,using the engineering geological survey, rock mechanics testing, field monitoring andtheoretical analysis methods, This paper mainly researches on the influencing factors ofcoal roadway of dynamic destabilization and analyze the roadway surrounding rockdeformation characteristics of dynamic destabilization in heavy and steep coal seam and putforward the control technology measures. In rock mechanics experiment, coal or rockphysical and mechanical properties is an important reason to the coal or rock dynamicdestabilization, the hardness and high energy storage of the501level B3+6of the DaHonggou coal mine has the occurrence of power unstable conditions of destruction. In fieldmonitoring, This paper analyzes the monitoring characteristics and parameters of coal orrock’s destruction in prosess of dynamic instability, this characteristics and parameters canhelp to predict the coal roadway’s dynamic destabilization.In terms of theoretical analysis,This paper shows that the reason of the coal roadway’s dynamic destabilization is the resultarising from the coupling of the stress concentration which has been caused by special seamburied geological structure characteristics, mining conditions and the physical and mechanicalproperties of the coal rock. Research identify the dangerous area of coal roadway wheredynamic destabilization may occur and propose measures by transfering and reducing stress concentration to prevent coal roadway from dynamic destabilization disaster.The study has guiding significance for deep mine roadway dynamic destabilization’scontrol in heavy and steep coal seam, but also for the similar conditions of coal mine ‘sdynamic destabilization prediction and control.