Study on Advanced Anchor - grouting Support of Mining Roadway in Close Lower Coal Seam
نویسندگان
چکیده
Aiming at the problems of difficult support mining roadway under goaf close distance coal seam, obvious large deformation, and long-term continuous deformation surrounding rock, an advanced bolt-grouting system is proposed. The can effectively solve problem from design system, construction monitoring evaluation realize intelligent support. Based on actual engineering background 29204 working face in Dongqu Coal Mine, supporting material scheme, grouting parameters, technology are studied analyzed. Finally, scheme adjusted optimized timely by combining with anchor grouting. field practice results show that bolting-grouting has good applicability to different conditions. maximum subsidence roof test section reduced 73.48 % compared original stress cable 50.68 %. research provide a set safe effective feasible technical ideas methods rock control seam.
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ژورنال
عنوان ژورنال: E3S web of conferences
سال: 2022
ISSN: ['2555-0403', '2267-1242']
DOI: https://doi.org/10.1051/e3sconf/202235801033