The hing girder assorting with π type steel used in broken caving roof in Nanshan Coal Mine,Hegang Mining Bureau can not only solve the roof fall accident but also meet the needs of section mining support.
鹤岗矿务局南山煤矿在破碎易冒落顶板中 ,铰接顶梁与π型钢梁配套使用 ,不仅解决了顶板易发生的抽漏冒顶事故 ,而且满足了分层开采各分层顶板支护的要
Through observing and analyzing to roof and wall of spot in 6114 workface,this paper sum up rules and features of rib spalling and roof fall under complicated geology condition in sub-level caving mining workface,it raises a series of roof control measures and gets good result.
通过对 6 114工作面顶板、煤壁现状的现场观测和理论分析 ,总结出了复杂地质条件下综放工作面煤壁片帮、端面顶板冒落的规律和特点 ,提出了一系列复杂地质条件下综放工作面顶板控制措施 ,现场应用后取得了较好的效
The roof falling types of worked out area in south mining district are pointed out, which are scattered falling and batch falling.
指出南区采空区顶板冒落形式 ,一是以散体形式零星冒落 ,另一是批量冒落。
To predict roof falling,AE field tests have been conducted and AE monitor holes are laid out based on the block analysis.
为了预报冒落事故，开展了声发射（ＡＥ）现场试验，并在块体分析的基础上布置了ＡＥ监测孔。
To predict roof falling) AE field tests have been conducted and AE monitor holes are laid out based on the block analysis.
为了预报冒落事故,开展了声发射(AE)现场试验,并在块体分析的基础上布置了AE监测孔。
Application of π type steel girder in broken easy caving roof
π型钢梁在破碎易冒落顶板中的应用
Analysis on the roof fall before frame in light caving face
轻放工作面架前冒落原因分析及预防
The block which will be the first of caving rocks from free surface and lead to more caving or side-fall in underground work is known as" critical rock".
地下工程中临空面上首先冒落并引发其他岩块冒落或片帮的块体称作“危石”。
We would not neglect our defenses; we would not risk falling behind.
我们并不忽视我们的防务，也不会冒落后的风险。
Analysis of Roof Caving Instability Mechanism of Large-Section Roadway Under Complex Conditions
复杂条件下大断面巷道顶板冒落失稳分析
Research on Rapid Reinforcement Technology for Mine Inclined Shaft Passing Through Dynamic Roof Failing Zone
斜井穿越动压冒落带的快速加固技术研究
Practice of Supporting Method with Small Wooden Stand in the Residual Stones of Caving Mining Area
小木架支护法在冒落采区残采矿石中的实践
Research on repair technology for deep mine roadway with fault falling in Qishan Mine
旗山矿深部断层冒落巷道修复技术研究
The engineering cases show that grouting is an effective way to get across the collapsed zone.
工程实例表明注浆是一种通过冒落区的有效办法。
Study on Mechanism of the Grouting Backfill in Caving Area with Strip Mining under Buildings;
建筑物下条带开采冒落区注浆充填减沉技术的理论研究
The Investigation on Roof Falling Morphology and the Gas Migration Law in Goaf under the Condition of Drainage
抽采条件下采空区覆岩冒落形态与瓦斯运移规律的研究
Study on Relationship between Depositing Characteristic of Falling Waste and Top Coal Recovery in Full-mechanized Caving
综放开采冒落矸石堆积特征与顶煤回收率关系研究
The theoretical study on loss rate of top coal and quantitative characteristics of piled waste
放煤损失率与冒落矸石堆积特征间量化规律的理论研究
Frogger Adventure The Lost Wand
青蛙冒险-失落的权杖
The student risked his life to save the boy falling into water.
学生冒着生命危险去救那落水的孩子。
Our policy constantly ran the risk of falling between two stools.
我们的政策常常冒着两头落空的风险。
When that branch fell on my head, I saw stars for several seconds.
那树枝落在我头上时，我有好几秒钟眼冒金星。
A ground squirrel emerges into a field of wildflowers in the Canadian Rockies.
在加拿大的落基山脉里，一只地鼠在野花丛中冒出了地面。