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- Keywords Deep thick hard roof;Rock bursf;Stress fold;Coal barrier;Fracturing destabilization; 深部厚坚硬顶板;冲击地压;应力叠加;煤柱;断裂失稳;
- When I was a kid, I had a big wheels trike made of thick hard plastic. 小时候我有一个粗笨的塑料制造的大车轮的三轮车。
- Research on freezing pressure in deep thick alluvium is in great need with the increase in depth of frozen shaft. 随冻结法凿井深度的增加,我国对深厚冲积层冻结井冻结压力分布的研究需求已经十分迫切。
- In mining, if the hard roof is submitted to shear failure, the sidesteps might sink or even collapse. 摘要综放面开采过程中，坚硬顶板超前剪切破坏，会造成工作面台阶下沉，甚至工作面整体垮落。
- The original emphasizesd on construction in mine shaft deep thick swelling claypan in Tang-kou, the damage of outward layer a well of wall and some efficient measures. 介绍了唐口副井井筒冻结段深厚膨胀黏土层施工、外层井壁变形破坏情况及采取的有效措施;取得了一些有用的经验.;为类似地层施工提供借鉴。
- The movement of hard roof in manless working face extraction has been simulated with three dimensional distinct element code for dividing into four stages. 分4个阶段模拟了无人工作面开采坚硬顶板采场顶板的运动规律。
- Soap returns the calcium in meeting and water, magnesian ionic union, form black dirty deposit to be on silk fiber, make its extensive yellow, thick hard. 肥皂还会与水中的钙、镁离子结合，形成皂垢沉积在丝绸纤维上，使其泛黄、粗硬。
- Through changing the face support fashion,the hard roof is managed by cutter top supports to increased cutter top resistance in Qitaihe Tiexi Coal Mine. 七台河铁西煤矿通过改变工作面支护方式,使用切顶支架增大切顶阻力来管理坚硬顶板,使坚硬顶板得到了较好的控制,杜绝了顶板事故的发生。
- Hard-top convertibles have become increasingly popular because they offer the top-down fun of a convertible with the quietness and security of a hard roof when the top is up. 硬顶敞篷车开始越来越流行，因为他具备了敞篷车的乐趣和全顶车的安全。
- Controlling Design of Working Face with Thick and Hard Roof 厚层坚硬顶板采场控制设计
- Keywords Deep mine;medium main roof blocks;First weighting;Simular test; 深部矿井;中硬岩层;老顶;初次来压;模拟试验;
- Keywords hard roof;hydrobreakage;tensile stress;RQD index; 坚硬顶板;水力压裂;拉应力;RQD指数;
- mine shaft liner in deep thick overburden 深厚表土中井壁
- In view of the compound hard roof of Six picks the area,through carrying on the comprehensive servation and the mechanics analysis appeared to pressure appears of the working face production process. 针对复合型坚硬顶板的六采区,通过对工作面生产过程的矿压显现进行了全面观测和力学分析。
- The longwall may relax some safety problems, but the other safety problems such as hard roof rock, the colliding and friction of the caved rock each other may be induced or intensified . 但是也可能诱发一些安全问题,如坚硬顶板对支架的冲击、采空区垮落岩石的撞击与摩擦诱发瓦斯事故等。
- Keywords deep hand burn;escharectomy;skingrafting; 深度手烧伤;切痂;植皮;
- Keywords deep bore;linearity;generatrix; 深孔;直线度;母线;
- Keywords Deep brain stimulation;Tardive dystonia; 脑深部电刺激术;迟发性肌张力障碍;
- Keywords Deep drawing LDR BHF control; 拉深;极限拉伸系数;压边力控制;
- The hardness and thickness of coal seam play a great role in the vertical distribution of stress in coal and the occurrence of rock bunt under the condition of hard roof and hard floor. 在“两硬”条件下，煤层厚度与硬度的变化对煤体中的应力分布有着很大的影响，从而对煤岩体系统中冲击矿压的发生有着很大的影响。
