查询词典 roof caving

The paper introduces roof control methods of goaf of large mining height fully-mechanized face by artificial forced caving with deep-hole blasting at seam 14 of Silaogou Mine and analyzes the effect.

介绍大同煤矿集团公司四老沟矿14#层404盘区8402大采高综采工作面人工强制深孔爆破处理采空区顶板的技术，并对其效果进行了分析。

Through methane simulation experiment on ignition and blasting due to seam roof rock friction in Qinshui Coal Mining District of Yangcheng, it is shown that sparks will be generated through friction while caving ,causing gas and water mixture to fire, it is big hidden sources which cause methane blasting accident in goaf.

通过对阳城沁水矿区煤层顶板岩石相互摩擦引燃引爆瓦斯模拟实验，得出&岩石在冒落过程中相互撞击摩擦产生火花，可能引起瓦斯与空气混合物着火，是造成采空区瓦斯爆炸事故引爆源&的结论。

Such as adaptation to the hard seam roof conditions resistance to a strong frame, adapted to the big mining thick coal seam mining height and caving hydraulic support, adapted to thin seam mining and steep seam mining and other special stent.

如适应于坚硬煤层顶板条件的商阻力强力支架，适应于厚煤层开采的大采高和放顶煤液压支架，适应于薄煤层开采和急倾斜煤层开采的特种支架等。

In the paper,fully-mechanized sub-level caving at home and abroad is systematically summarized,it is presented that how to increase cavability of hard roof coal is main technology difficult problem to be faced.

在国内外综放开采技术系统总结的基础上，提出了特厚坚硬煤层综放开采所面临的主要技术难题就是如何提高坚硬顶煤的冒放性。

After analyzing fully-mechanized sub-level caving technology in the case of special thick and hard coal seam, it is presented that the increment of cavability of hard roof coal and available control of gas are the main difficult technology problem to be faced.

通过对特厚坚硬煤层综放开采技术的系统分析，指出提高坚硬顶煤的冒放性和瓦斯的综合治理是该条件下综放开采所面临的主要技术难题。

In this paper, the sine and cosine shaped sensors have been designed by using the integral characteristics of PVDF piezoelectric film. The sine PVDF sensor can be used alone to measure the displacement, speed, acceleration, stain, stress of the roof beam vibration; the cosine PVDF sensor can be used alone to measure the angular displacement and shear of the roof beam vibration; by using them jointly , the structural intensity can be measured for the roof beam without any finite differential error.

本文利用PVDF压电薄膜独特的积分特性，设计制作了正弦形状和余弦形状传感器，它们单独使用，正弦形状的PVDF传感器可以用来测量梁振动的位移、速度、加速度、应变、应力、弯矩；余弦形状的PVDF传感器可以测量振动梁的角位移和剪力；配对使用它们，可以用来测量梁的结构声强，用它们测量结构声强时不会产生有限差分误差。

The wall rocks destroy and deformation of compound roof roadway mainly refers to the roof falling caused by the weak bedding plane of the compound roof.

复合顶板回采巷道的围岩变形破坏，主要是复合顶板的层理弱面引起的顶板冒落。

This paper discusses the problems of the roof design in northern frore area with the practice of dwelling house design for Changchun Finance Bureau. The discussion is from five aspects of roof obliquity, dormer window, flat roof, structure design and conformation design.

结合长春市财政局职工住宅小区的屋顶设计实践，分别从屋顶的角度处理、老虎窗设计、屋顶平台设计、结构和构造设计5个方面，探讨了北方严寒地区住宅的屋顶设计问题。

The lowness of the roof means that the top of the roof is near to the underside of the roof.

矮屋顶意味着屋顶上沿与屋顶下沿的距离很近。

Here,an explanation is given for the reinforcement of roof truss and revamping of roof system through the deformation quality investigation and analysis for roof truss of an industrial building.

为此，通过对一起工业厂房钢屋架变形质量的调查分析，阐述了对屋架的加固和对屋盖体系的改造。

Now she was hungry and angry.She began to smoulder.

现在她又饿又气，她开始流露难以抑制的怒火。

You have placed our iniquities before You, Our secret sins in the light of Your presence.

诗90：8 你将我们的罪孽摆在你面前、将我们的隐恶摆在你面光之中。