掌石沟煤业15102回风顺槽动压影响支护技术研究
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摘要
以掌石沟煤业15102工作面回风顺槽作为研究对象,对其20 m煤柱的安全性与其地质构造、顶底板情况进行了分析,并对其地应力、围岩强度、窥视、锚固力、张拉力等力学参数进行了评估,在充分考虑黄泥裹碎石顶板的基础上,针对围岩稳定和地质异常等情况,分别提出了回风顺槽的顶板、实体煤侧巷帮和煤柱侧帮以及架棚段支护方案。
Taking 15102 face of Zhanshigou coal industry as research object, the safety of 20 m coal pillar, its geological structure, roof and floor are analyzed, and its in-situ stress, surrounding rock strength, peeping and anchoring force are analyzed. The mechanical parameters such as tensile force are evaluated. On the basis of fully considering the yellow mud-covered crushed stone roof, aiming at the stability of surrounding rock and geological anomaly, respectively, the roof of the return wind trough is put forward. Solid coal side sideways and pillar sideways as well as the support scheme of scaffolding section.
Taking 15102 face of Zhanshigou coal industry as research object, the safety of 20 m coal pillar, its geological structure, roof and floor are analyzed, and its in-situ stress, surrounding rock strength, peeping and anchoring force are analyzed. The mechanical parameters such as tensile force are evaluated. On the basis of fully considering the yellow mud-covered crushed stone roof, aiming at the stability of surrounding rock and geological anomaly, respectively, the roof of the return wind trough is put forward. Solid coal side sideways and pillar sideways as well as the support scheme of scaffolding section.
引文
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[4]戚福周,吴亚州.破碎顶板松散煤巷支护技术与工艺[J].煤矿安全,2015,46(3):65-67.
[2]徐青云,黄庆国,刘学文.破碎顶板煤巷支护参数优化及工程实践[J].煤炭科学技术,2012,40(6):22-25.
[3]李广兴,吴建星.破碎顶板小煤柱动压巷道支护技术研究[J].煤矿开采,2013,18(2):49-52.
[4]戚福周,吴亚州.破碎顶板松散煤巷支护技术与工艺[J].煤矿安全,2015,46(3):65-67.