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在矿山开采中,底鼓现象是膨胀软岩巷道围岩变形和破坏的主要特征与形式,底鼓会给巷道支护带来很大的困难。由于每种底鼓机理都有一定的适用范围,故针对特定的工程环境,研究防治技术非常有必要。在河南奋进煤矿软岩巷道底鼓治理过程中,通过简化复杂应力膨胀软岩受力模式,建立简单实用的计算力学模型分析问题,并试验了两喷一锚支护工艺。
In mining, the bottom drum phenomenon is the main feature and form of the deformation and destruction of the surrounding rock of the soft rock tunnel, which will bring great difficulties to the roadway support. As each kick drum mechanism has a certain scope of application, so for a specific engineering environment, the study of prevention and control technology is very necessary. In the process of soft rock tunnel bottom drum management in Fenjin Coal Mine in Henan Province, a simple and practical computational mechanics model analysis problem was established by simplifying the stress mode of soft rock by complex stress expansion, and the two spray and one anchor support technology was tested.