At present, 16 groups of pressure relief boreholes designed within 100m of the air transport roadway of 111514 face have been completed, with a total of 6025m boreholes, creating conditions for safe production of 111514 fully mechanized face.
In order to ensure that the construction task of initial mining and pressure relief drilling is completed before the installation of mining face supports, the outburst prevention team in Honglin Mine pass and prevention work area has transferred professional and technical backbones to form a special construction team to work overtime and arrange holes in strict accordance with the requirements of the measures.
Recently, in order to ensure that after the 111514 fully mechanized working face of Honglin Mine is put into production, the gas in the upper corner of the 111514 mining face will not exceed the limit due to the gas emission from the adjacent layer and the protected layer through the cracks, the gas pressure relief drilling of the 111514 fully mechanized working face will be constructed in the air transport roadway of the 111514 mining face, and the gas in the 14 # and 13 # coal seams above the target coal seam will be pre pumped, so as to prevent the occurrence of gas overrun accidents during the initial mining.
(An Qunyou) Email: 12997134937@qq.com Edited by: Mu Qiyi Checked by: Tang Hai Reviewed by: Yu Caiping..
