gradual sagging roof

用法例句

To solve the existing problems of most roof descending monitors such as heavy workload of data collection and unable to upload roof descending data to surface, the paper proposed a design scheme of remote transmission system of mine roof descending signal.

针对目前大多数顶板下沉监测仪存在的数据收集工作量大、顶板下沉数据无法上传地面等问题,文章提出了一种矿井顶板下沉信号远程传输系统的设计方案,详细介绍了系统的工作原理、数学模型,并确定了关键参数,同时给出了系统硬件电路设计。

The law of roof convergence along with engineering practice changes were analysised.

研究了顶板下沉量随着不同工程实际情况变化的规律,分析了工程节理特征对巷道围岩稳定性的影响。

This paper introduces the successful experience of over roadway extraction in complex geology that has roof step,face roof collapse with cavity,passing through fault etc.

介绍了135采煤队在顶板台阶下沉、漏顶、压力大、过断层等复杂地质因素影响下,跨巷道高档普采成功回采的经验。

Design of Remote Signal Transmission System in Mine Roof Descending Monitoring

矿井顶板下沉监测中信号远程传输系统的设计

Research on the Newly-built Tunnel Roof Settlement Prediction Based on Verhulst Model

基于Verhulst模型的新建隧道顶板下沉预测研究

Construction Technology of Settlement Late Poured Band of Basement Roof for Advanced Closing

地下室顶板沉降后浇带提前封闭施工技术

Experimental study of vertical wave forces acting on perforated caisson with top cover

规则波作用下有顶板开孔沉箱垂直波浪力试验研究

The gray wind of December is sweeping down the overhung of the roof.

十二月的阴沉沉的风顺着房顶吹下来。

Study the technique of caving hanging roof in the condition of hard roof of room-and-pillar mining.;

房柱式开采坚硬顶板条件下悬顶放顶技术研究

Study was conducted on the roof of No.3604 S4 coal face and the actual mining roadway with fractals, and a few kinds of functional values of subsidence velocity of this face were obtained.

用分形对3604S4工作面和回采巷道顶板进行了研究，得到了该工作面下沉速度的几种分维值。

Study of Prediction and Control of Roof Accidents and Subsidebce Calamity in Fully Mechanized Top-Coal Caving Stope;

综放采场顶板事故及沉陷灾害预测与控制研究

Press the cowl top trim panel down until the snap clip retainers engage in the top of the instrument panel.

向下压仪表板顶部饰板，直至夹扣定位器啮合到仪表板顶部。

A decorative sunken panel in a ceiling, dome, soffit, or vault.

饰板在天花板、圆屋顶、拱腹、拱顶内的下凹装饰镶板

Crack Treatment of Basement Roof in Stress Concentration Condition

应力集中作用下地下室顶板开裂处理

Remove the fender top, front and the rear screws.

拆下挡泥板顶部、前部和后部螺丝。

a convex molding just below the abacus of a Doric capital.

多立斯柱头顶板下的凸出装饰.

Remove the push-in fastener from the top of the fan shrou

从风扇围板顶部拆下压入扣件。

Effects of Roof Control by Means of Hydraulic Supports Under Various Conditions

不同条件下液压支架控制顶板的效果

Experience in combined supporting for use in large-span underground chamber under soft roof strata

软岩顶板下大断面硐室联合支护经验

Numerical Simulation of Artificial Roof Thickness of Underground Mine Stope

地下矿山采场顶板厚度数值模拟研究

Detector of Coal Seam Roof Strata Based on S3C44B0X Framework

基于S3C44B0X构架下的煤层顶板岩层探测器