Investigation On The Law And Prevention Technology Of Coal Bump In Kailuan Coal Mine

Based on the investigation on geology condition of Kailuan coal mine, the study on the appearance law of rock burst in Kailuan coal mine area is an important issue on safe mining and disaster prevention in this area. Due to the field survey on Zhaogezhuang coal mine and Tangshan coal mine of Kailuan coal mine area, this paper dealt with the law that the appearance of rock burst was always accompanied with abnormal gas emission. The tectonic factors were regular with the incidence of the dynamic pressure appearance. According to the Laboratory rock mechanics testing and identification of bump proneness, the12th coal seam in Kailuan coal mine was strong bump proneness coal strata. The three indicators that determine the bump proneness of coal seam were mostly involved in the scope of strong bump proneness. The mining depth was already1000m which means it belonged to the deep mining. This seam had trong bump proneness under high ground stress. The crucial technical problems faced by Kailuan coal mine area in deep mining were researched with theoretical analysis and numerical simulations and the relationship between mining pressure distribution, the law of energy accumulation and relief, the depth of coal seam and tectonic stress during the mining of a typical bump prone working face were determined in Kailuan coal mine area. The increasing mechanism of energy relief in the front of the working face was revealed when the period came. This paper focused on the control techniques of rock burst in Kailuan coal mine area and used the techniques such as drilling advance boreholes to solve the problem of rock burst in the2337E working face of Zhaogezhuang coal mine. Based on the experiments and numerical calculations, a series of measures were proposed to prevent the rock bursts. This paper provided the theoretical basis and technique support to prevent rock burst during coal seam mining in Kailuan coal mine area, and the results were with scientific significance and values of engineering guidance.