3) mining-induced fracture
采动裂隙
1.
Based on engineering example of protective layer mining in Hongling coal mine of Shenyang Coal Group,the mining-induced fracture distribution has been studied.
以沈煤集团红菱煤矿保护层开采为工程实例,通过开采11#煤层,对存在煤与瓦斯突出的7#煤层和12#煤层进行卸压,研究保护层开采后采动裂隙分布规律。
2.
a spectial computer program FIMAGE for the image analysis of mining-induced fracture has been drawn up and the program can be used to make quantitative statistics of the experiment results of the mining-induced fracture.
在分析计算机图像处理的步骤与采动裂隙二值化图像统计算法的基础上,编制了采动裂隙图像处理程序FIMAGE,应用该程序可对覆岩采动裂隙模型实验结果进行定量统计。
3.
Rock mass deformation and failure in working face caused by underground mining lead to mining-induced fracture,which is the source of a series of mine disasters.
地下矿床开采引起采场围岩变形破坏产生采动裂隙,采动裂隙是矿山一系列灾害的根源,研究矿山采动裂隙岩体的地球物理场特征,提出可行的地球物理方法对裂隙岩体实施高精度高分辨率探测,对于防治矿山灾害发生,保障矿山安全,具有重要的理论意义和实际应用价值。
4) mining-induced fractures
采动裂隙
1.
By means of experiments and theoretical analysis, the dynamic distributions and its influence factors of the mining-induced fractures were studied.
岩层采动裂隙分布的研究与水体下和承压水上采煤、卸压瓦斯抽放、离层区充填与开采沉陷控制等工程问题紧密相关。
5) mining induced fracture
采动裂隙
1.
Caving thickness effects on distribution and evolution characteristics of mining induced fracture;
采动裂隙分布及其演化特征的采厚效应
2.
The distribution characteristics of mining induced fractures in the overlaying strata are studied by means of model experiments, the image analysis and discrete element simulation method,and revealed that two stage development law of fracture caused by mining and distribution characteristics of “O shape” circle in long wall face and guide for hole pattern of relieving gas drainage.
应用模型实验、图像分析、离散元模拟等方法，对上覆岩层采动裂隙分布特征进行了研究，揭示了长壁工作面覆岩采动裂隙的两阶段发展规律与“Ｏ”形圈分布特征，并将其用于指导卸压瓦斯抽放钻孔布置，在淮北矿区卸压瓦斯抽放中得到应用，取得了显著效果。
6) affected bottom fractured zone by mining
底板采动破坏裂隙带
补充资料：弩手抛投石带
广泛用于古代世界（埃及、希腊、罗马等国）和中世纪各国。由兽皮、毛或植物纤维做成带状，中间部分宽，一端有环扣，套在投石手的手上或木柄上（长鞭投弹带）。弹丸放在中央的宽部，通常为鹅卵石、金属球。投石手同时握住两端，在头顶不断旋转加力，然后松开无环扣的一端。有效杀伤距离150米，介于投矛和弓箭之间。投石手通常带有十发以上的弹丸。投石带有多种形式，澳洲、非洲、大洋洲诸部落一直使用到二十世纪初叶。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条