查询词典 caving

The reseach results provide that, to the sysytem of digital panoramic borehole camera, it is a effective method to detect the crack occurrence, width and length from the visible and quantitative. It is advantage to handle emptied areas throught induce fracturing caving in the roof, it is saied the induce couple technology of mining and blasting.

分析结果表明，数字式全景钻孔摄像系统可以直观可视和定量精细描述裂隙的形态，回采扰动和强制爆破诱导耦合技术，从裂隙发育、扩展以及裂隙的演化，有利于顶板围岩致裂失稳崩落，从而形成诱导崩落顶板处理空区的目的。

The forming mechanism of pressure arch is studied theoretically. The shape of the arch and the pressure distribution acting on the bottom of block caving are given, and the various mechanical respondence related to the arch can be explained in quantity in this paper.

本文对压力拱的形成机理进行了理论研究和定量分析，给出了压力拱的形状和底柱上的压力变化规律，并可以定量解释与压力拱有关的所有力学现象。

It was the first time that full-mechanized caving mining was used under sea in the history of coal mining under sea in the world.

海域下煤层采用综放开采在世界海域煤炭开采史上还是首次。

Based on the condition of No. 4324 super-wide fully mechanized top-coal caving island face in Xinglongzhuang coal mine of Yanzhou Mining Group, the setting load and working resistance of hydraulic powered support were continuously recorded by means of the self-recording pressure instrument.

基于兖矿集团兴隆庄煤矿4324超长综放孤岛面开采条件，采用圆图压力自计仪，连续记录液压支架的初撑力和工作阻力，分析了综放工作面液压支架支护阻力的循环变化规律，工作面沿倾斜方向上的压力分布特征。

The selection principle of the roof control parmeters is introduced at the blasting caving coal face in three soft coal seam.

介绍了三软不稳定煤层炮采放顶煤工作面顶板控制参数的选择原则。

With the development of technology, automation of fully mechanized sublevel caving working face now becomes a main trend of modern mining.

随着生产技术水平的不断提高，综放工作面自动化是现代采煤发展的一个必然趋势。

This paper introduces a production-exploration method for a mine using sublevel caving.

本文介绍一个采用分段崩落法矿山的生产勘探方法。

The theory research and the engineering technology of fully-mechanized sublevel caving face have achieved through many year s development. But there are a lot of problems which are not solved.

综采放顶煤技术经过近二十多年的迅速发展，无论是在理论研究还是工程技术方面，已经达到了很高的水平，但仍然存在很多问题尚未解决。

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。

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。