摘要
露天转地下开采的顶板隔离层是控制采场回采的关键参数。以华联矿业南平硐开采的37-5～#采场为试验对象,建立采场计算的数值模型,分析获得了采场的位移和塑性区规律,提出了采场顶板锚杆支护的安全控制措施,降低了采场的顶板变形,消除了顶板隔离层的塑性区贯通隐患。
The roof isolation layer from open pit to underground mining was the key parameter to control the stoping of the stope. Taking the 37-5 # stope of Nanpingtong in Hualian Mining as the test object, through establishment of the calculation numerical model from stope and analysis, the displacement and plastic zone law of the stope were obtained, and the safety control measures of roof bolt support of the stope were put forward, which reduced the roof deformation of the stope and eliminated the transfixionhidden danger of the plastic zone in the roof isolation layer.
出处
《中国矿山工程》
2018年第5期44-46,共3页
China Mine Engineering
关键词
露天转地下
顶板变形
塑性破坏
锚杆
open pit to underground mining
roof deformation
plastic failure
bolt supporl
