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- The caving of thick and strong roof stratum,key stratum,causes tremendous rock pressure in mine. 采场上覆岩层中的厚硬岩层,即厚硬关键层,其冒落会造成剧烈的矿山压力显现。
- strong roof strata 坚硬顶板
- The paper regards the main roof strata in uphill and downhill mining of an inclined longwall as a elastic plate. 本文将倾斜长壁仰斜、俯斜开采的老顶岩层视为倾斜弹性板。当板的长短跨度之比＞2时，板的荷载主要由短跨边来承担。
- A detection method of roof strata structure is put forward and the application of the method in Guhanshan coal mine in Jiaozuo is introduced. 提出了一种顶板岩层结构探测方式,介绍了该探测方式在焦作古汉山煤矿应用的情况。
- For the unloading effect, the arching mechanism in the roof strata is weakened, and the probability of catastrophic collapse exists in roof strata above the milling zone. 由于边坡的卸荷作用，导致采场上覆岩层成拱机制减弱，采空区覆岩存在整体垮冒的可能性。
- Investigation into the law of movement of roof stratum at the face,when a shortwalling system to the dip or along the strike of applied,is made with finite element and me- chanical methods. 本文通过分析水采和旱采顶板运动的特点 ,采用有限元及力学的方法研究了水采工作面沿倾向与走向的顶板运动规律。
- The results show that under these conditions the rock burst is closely related to the coal rock characteristic, mining depth, thickness of strong roof and periodic weighting of roof. 结果表明在此条件下开采时发生的冲击矿压与煤岩性质、采深、坚硬顶板厚度及顶板的周期来压有密切关系。
- Observation of the movement and the stability of roof strata 采场顶板岩层运动及稳定性的观测研究
- The boat heeled over in a strong wind. 船在强风吹袭下倾侧了。
- Survey and determination on roof strata structure in seam gateway 煤巷顶板岩层结构的探测与确定
- Study of roof strata movement in coal mining face under steep angle 大倾角煤层采面顶板岩层运动研究
- Research on the Strong Roof Control Technique on the Strip Face 条带工作面坚硬顶板控制技术的研究
- Study on the Broking Mechanism of Roof Stratum of Coal Seam 煤层顶板破断机理研究
- The islanders are a strong breed of people. 这些岛上的居民是一种体格强壮的人。
- It is strong enough to bear up the weight of the roof. 它很牢固,足以支撑住屋顶的重量。
- The man attached a strong rope to his sled. 那人将一条结实的绳子系在他的雪撬上。
- The strong smell made me throw up. 这强烈的气味使我呕吐了。
- A strong crosswind caused our gunboat to lay along. 一阵猛烈的侧风把我们的战舰吹得倾斜起来。
- SIMULATION TESTING STUDY ON ROOF STRATA DISPLACEMENT OF TOP-COAL CAVING FACE 放顶煤工作面顶板岩层移动相似模拟研究
- He has a strong political background. 他有强大的政治背景。
