摘要
针对马路坪矿深部红页岩巷道底板出现的底鼓问题,对深部软岩巷道的底鼓成因和机理进行了分析,从而得出随着巷道掘进深度的增加,巷道底板弹性区的应力增长梯度及其静水压力增长梯度呈线性关系,与巷道底板的塑性区呈现近似线性相关关系,研究结果为马路坪矿深部红页岩软岩巷道底鼓的防治提供了理论依据。
In addressing the problem of floor heave at red shale in Maluping Mine, theoretical analysis on the cause of formation and mechanism of floor heave was made, which shows that stress growth gradient in plastic area of the roadway floor presents a linear relationship to hydrostatic pressure gradient with the increase of tun- neling depth, and that the elastic stress growth gradient and hydro- static pressure gradient present linear relationship between growth, and the plastic area of tunnel floor presents the approximate linear relationship. The result has provided a reasonahle theoretical basis for the prevention and control of the deep red shale soft rock tunnel floor heave in Maluping Mine.
出处
《化工矿物与加工》
CAS
北大核心
2012年第6期34-35,共2页
Industrial Minerals & Processing
关键词
深部红页岩
巷道底鼓
机理研究
deep red shale tunnel floor heave mechanism research
