The balance structure of main roof and its action to immediate roof in large cutting height workface;
本文分析了顶板运动对冲击矿压的作用，采用“砌体梁”理论研究了断层倾向对顶板平衡结构的影响。
Accordingly, the new design method of anchor cable parameters applying to thick soft immediate roof is proposed.
提出了基于厚层软弱直接顶的新的锚索参数设计方法。
The increase in mining height makes the weighting of immediate roof become more violently, which requires that the support strength should increase accordingly.
由于采高加大使基本顶来压更加强烈，支架的支护强度更要加大。
Based on field observations and theoretical analyses, the characteristic of periodic caving of immediate roof and main roof in a room and pillar system was analyzed.
通过理论分析和现场实测，对房柱式采煤的矿压显现规律及其特点进行了探讨。
The paper analyzes the reasons and preconditions of this periodical pressure, then preventive measures of hazards caused by immediate roof periodical pressure is suggested.
文中分析了直接顶引起周期压力的原因和条件，提出了预防直接顶周期性压力灾害的措施。
The movement and breakage of top coal, especially its internal micro-fracture extension, are closely related to the movement regularity of its immediate roof and main roof.
顶煤的运移与垮落，尤其是内部微观裂隙的扩展，与其直接顶和老顶岩层的活动规律密切相关。
The results show that the abutment pressure distribution on coal pillar is the direct reflection of abutment stress induced by mining on the interfaces of coal seam and immediate roof.
研究结果表明，煤柱上支承压力分布是开采影响岩层相互作用的结果，是开采引起集中应力在煤层与直接顶界面上的直接反映。
Simulation testing and theoretical analysis were made to study generating mechanics and moving evolutionary process of "granular arch" structure of upper immediate roof in top coal caving.
通过相似模拟实验和理论分析，研究了综放条件下上位直接顶“散体拱”结构的形成机理和移动演化过程。
The observation on 704 coal face of Fuliu coal mine shows that periodical pressure can also be caused by immediate roof due to its periodical rupturing under certain geological conditions.
本文依据广西罗城矿务局呼略矿70 4面的开采试验，说明了直接顶在一定的地质条件和生产技术条件下，也可以产生周期性的断裂，形成周期性的压力。
The stability of main and immediate roof structure and its influence on strata behaviour are analysed. The failure features of roof coal between top and bottom slice are thoroughly studied.
深入分析了层间顶煤的破碎特点，指出层间顶煤的破碎效果是多因素综合作用的结果，而在不同的开采条件下将具有不同的放顶煤效果。
"When a green roof was suggested as a way to help us get the [design] through planning, our immediate reaction was that we would only have a green roof that we could really garden," they said.
“当绿色屋顶的概念被提出，借此帮助我们的[设计]通过规划时，我们当下的反应就是：我们不仅会有一个绿色的屋顶还将拥有真正的花园，”他们说。
They work in several steps mostly in the immediate forward support (IFS) type in order to support the newly exposed roof as soon as possible.
他们在立即前移支护系统里通常从事以下几步工作，为了尽可能快地支撑新暴露空间。
The height of the roof is also carefully controlled to relate to the immediate adjacent buildings.
屋顶的高度也得到仔细控制，以便与紧邻的建筑和谐相处。
Suddenly, Harry burst through the door and told Tom there was a leak on the roof that needed immediate attention.
突然，哈里从门口冲进来，告诉汤姆屋顶有个漏洞，需要赶快修理。
Suddenly, Harry burst through the door and told Tom there was a leak on the roof that needed immediate attention.
突然，哈里从门口冲进来，告诉汤姆屋顶有个漏洞，需要赶快修理。
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