查询词典 caving system

Up to Qin Dynasty,the system of caving names on the manufactures was formed.

在这众多的记号中，有的称其为物勒工铭。

Study the automatic system of fully mechanized sublevel caving working face applying neural network control theory.

应用神经网络控制技术对综放工作面自动化系统进行了研究。

According to a typical fully mechanized sublevel caving working face, this paper analyses the function of all equipments of this working face as a whole and researches the automatic control system of equipments of this working face with application of neural network theory.

本论文根据现有的一套综放工作面设备，对其各个部分的功能进行了分析，并应用人工神经网络技术进行了控制系统的研究。

The blast of sublevel caving together with the blast of undercutting, crater opening and slot cutting are brought about successfully at same time in the practice of sublevel drilling and stope mining with nonelectric blast ignition system, and the productivity of mining is increased.

在分段凿岩阶段矿房法回采实践中，用非电导爆管雷管起爆系统成功地实现了阶段落矿爆破与拉底、辟漏、切槽爆破一次同步进行，提高了生产效率。

The blast of sublevel caving together with the blast of undercutting, crater opening and slot cutting are brought about successfully at same time in the practice of sublevel drilling and stope mining with nonelectric blast ignition system, and the product

在分段凿岩阶段矿房法回采实践中，用非电导爆管雷管起爆系统成功地实现了阶段落矿爆破与拉底、辟漏、切槽爆破一次同步进行，提高了生产效率。

With the increasing of the bedrock thickness, pressurized pace was increased gradually, the roof caving and surface subsidence were gentled step by step. When the thickness of roof bedrock was larger than 60m, the bench subsidence was not occurred, and the value of surface subsidence was also small. The mining technology was proper and highly active, and the support programme was feasible. The roof was controlled effectively by the support system, and achieved safety mining.

随着基岩厚度的增加，顶板来压步距逐步增加，顶板垮落与地表下沉越来越缓和，基岩厚度大于60m时，顶板来压不再出现台阶下沉，地面下沉量较小；针对不同厚度基岩提出的采煤方法合理，高效，支护方案可行，能够有效控制顶板，实现安全生产。

In order to discuss the effect of overburdens under injecting grouts in separate layers on the morphology of the water flowing fractured zone, continuous exploration for failure characteristics of the overburden of working face 14308 of Dongtan Coal Mine under injecting grouts in separate layers and fully mechanized sub-level caving condition was processed by the method of underground uphole water injection technology by intervals with bore-head leaking multi-loops affusion system.

为了探讨覆岩离层注浆条件对导水裂隙带形态的影响，采用前端泄露式多回路注水系统，应用井下仰孔分段注水法对东滩煤矿14308工作面覆岩离层带实施注浆充填条件下综采放顶煤导水裂隙带的破坏特征进行了连续探测。

Keywords movement probability;computer simulation;SLS system;sublevel caving

移动概率；计算机仿真； SLS系统；无底柱分段崩落法

The direct evaporative internal-melt ice storage air conditioning is a new and promising technology.It is important to master the ice coil heat transfer performance for the project.The paper analysed the dynamic characteristics and established the corresponding mathematical models of the system,and used the model to analyse the performance of caving cooling process changes.The model for direct evaporation in the U-shaped ice-melting ice storage VRV system couldbe helpful to design and optimization theory.

直接蒸发内融式冰盘管是空调蓄冷工程中常用的一种方式，对这种冰盘管的融冰传热性能的掌握对于工程应用非常重要，本文对基于VRV空调系统的内融式U形冰盘管融冰过程的动态特性进行了分析，建立了相应的数理模型，并利用该模型分析了放冷过程的性能变化，该模型可为直接蒸发内融式U形冰蓄冷VRV融冰系统的设计及优化提供理论依据。

By applying the system reliability and ergonomics theory, the reliability mod el of the man-machine-environment system of roadway sub-level caving in steep seam is set up, and the calculation formulas for the usability and pro duction capacity o

文摘：应用系统可靠性和人-机工程学理论，建立了急倾斜煤层巷道放顶煤人-机-环境系统可靠性模型，给出了系统可用度和生产能力的计算公式。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。