查询词典 caving-in

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。

Automation of fully mechanized sublevel caving working face could not only increase the mine's output, but also lighten workload and enhances work efficiency.

综放工作面自动化不但能够显著提高煤炭的产量，而且能够减轻劳动者的工作强度提高生产效率。

Through analyzing the problem of the coal wall support, top-coal caving and the design of powered support,the author explains the method to control the coal slabbing and the measure of powered support design and the collocation of the rear transport pan.

通过对仰采放顶煤工作面煤壁支护、放顶煤问题、液压支架设计等方面的分析，说明在仰采工况下控制煤壁片帮方法以及液压支架设计、后部输送机布置应采取的措施。

A conclusion is drawn that the air leakage intensity of goaf along the caving uncompacted zones around solid wall boundary is relatively large, namely, the air leakage intensity of two ends of working face is large, and the flow lines can be extended to the deep parts of goaf.

得到采空区漏风强度沿固壁边界附近的冒落非压实区相对较大，工作面上下端附近处的漏风强度很大，并直通采空区深部。关键词采空区，漏风流态，有限元法

When the roof overhangs well into the gob and requires induced caving, the chocks can provide access to the gob.

当顶板overhangs早已进入采空区，并要求诱导崩落， chocks可以充分利用采空区。

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。

Static ropes are used for rescue, caving and rappelling, but do not stretch enough to absorb the impact of a leader fall when climbing.

静力绳用于救援，探洞和下降，但是其延展性不足以吸收领攀者冲坠的冲力。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。