摘要
针对巷道顶板淋水造成的软岩底板难以控制的问题,以黑龙煤矿2202运输顺槽为工程背景,通过数值模拟分析了围岩位移及破坏形式,得出其底板最大破坏深度达到了3.0 m,底板破坏形式表现为浅部拉伸破坏及深部剪切破坏。基于现场条件,提出采用新型防水锚固剂进行锚杆索的锚固,并设计了顶板、两帮及底板的支护方案。采用该技术方案后,巷道底板最大变形量约为24 mm,应用效果良好。
In view of the problem of difficult control of the soft rock floor caused by watering on the roadway roof,taking the 2202 transportation channel of Heilong Coal Mine as the engineering background,the displacement and failure form of the surrounding rock are analyzed through numerical simulation.It is found that the maximum failure depth of the floor reached 3.0 m,and the failure form of the floor is manifested as shallow tensile failure and deep shear failure.Based on on-site conditions,a new waterproof anchoring agent is proposed for anchoring the anchor cable,and support schemes for the roof,two sides,and floor are designed.After adopting this technical solution,the maximum deformation amount of the roadway floor is about 24 mm,and the application effect is good.
作者
王少伟
Wang Shaowei(Lu'an Chemical Puxian Heilong Coal Industry Co.,Ltd.,Shanxi Linfen 041200)
出处
《山东煤炭科技》
2023年第7期29-31,共3页
Shandong Coal Science and Technology
关键词
淋水
巷道
底鼓
模拟
watering
roadway
heaving floor
simulation
