摘要
为保障15106工作面运输顺槽掘进期间的安全,通过具体分析承压水对底板的破坏模式,得出巷道塑性圈的发育深度为2.7m,底板隔水层的主要破坏过程为完整→小裂隙形成→裂隙扩展→底板破碎;采用岩柱法力学模型进行底板突水危险性的评价,基于巷道底板铝土泥岩隔水层的各项参数,计算出隔水层的所能承受的最大水压为3.26MPa,而其所承受的水压值约为1.42MPa,故判断巷道掘进期间无突水危险性,巷道掘进期间加强探访水作业,防止地质构造区域出现底板突水现象。
In order to ensure the safety of the 15106 working face during transportation along the tunnel,through the specific analysis of the failure mode of the pressure water on the floor,the development depth of the roadway plastic ring is 2.7m,and the main failure process of the floor water barrier is intact→small cracks Formation→Fracture expansion→Floor breakage;The rock column method mechanical model is used to evaluate the water inrush risk of the floor.Based on the parameters of the bauxite and mudstone water barrier in the roadway floor,the maximum water pressure that the water barrier can withstand is calculated It is 3.26MPa,and the water pressure it bears is about 1.42MPa,so it is judged that there is no danger of water inrush during roadway excavation.During the roadway excavation,the visiting water operation is strengthened to prevent the water inrush in the geological structure area.
作者
韩伟
HAN Wei(Shanxi yangquan coal industry(group)co.,LTD.,Shanxi Yangquan 045000)
出处
《煤矿现代化》
2020年第4期93-95,98,共4页
Coal Mine Modernization
关键词
底板突水
破坏形态
岩柱法
评价模型
Floor water inrush
failure form
rock column method
evaluation model
