Determining the pressure increase in the hydraulic cylinders of powered roof support based on actual measurements

IF 2.2 4区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Acta Montanistica Slovaca Pub Date : 2023-02-20 DOI:10.46544/ams.v27i4.04

引用次数: 0

Abstract

Powered roof support in a longwall operation is designed to maintain a safe working area and allow the immediate roof to fail and collapse behind the support. The powered supports are loaded using large hydraulic pumps with non-return and preset-yielding valves. In addition to providing support to the immediate roof in the longwall production area, it also moves the armoured face conveyor and shearer forward as coal mining progresses. The research aimed to analyse the changes in the pressure values in the powered roof support section's hydraulic cylinders in relation to the occurrence of rock mass movements in the roof. The pressure measurements are based on the sensors in the sub-piston space of the powered roof support hydraulic prop located in the steel wall. The results allow a correlation to be developed between the roof movement and the loads generated in the hydraulic cylinders.

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根据实际测量结果确定了电动顶板支架液压缸的压力增量

在长壁作业中，动力顶板支架的设计是为了保持一个安全的工作区域，并允许支架后面的直接顶板失效和坍塌。动力支架使用大型液压泵加载，液压泵带有止回阀和预设屈服阀。除了为长壁采区直接顶板提供支撑外，随着采煤的进行，它还将装甲工作面输送机和采煤机向前推进。研究的目的是分析动力顶板支护段液压缸压力值随顶板岩体运动的变化情况。压力测量是基于位于钢壁的动力顶板支架液压支柱的副活塞空间的传感器。结果允许在屋顶运动和液压缸中产生的载荷之间建立相关性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Montanistica Slovaca 地学-地球科学综合

CiteScore

3.60

自引率

12.50%

发文量

审稿时长

30 weeks

期刊介绍： Acta Montanistica Slovaca publishes high quality articles on basic and applied research in the following fields: geology and geological survey; mining; Earth resources; underground engineering and geotechnics; mining mechanization, mining transport, deep hole drilling; ecotechnology and mineralurgy; process control, automation and applied informatics in raw materials extraction, utilization and processing; other similar fields. Acta Montanistica Slovaca is the only scientific journal of this kind in Central, Eastern and South Eastern Europe. The submitted manuscripts should contribute significantly to the international literature, even if the focus can be regional. Manuscripts should cite the extant and relevant international literature, should clearly state what the wider contribution is (e.g. a novel discovery, application of a new technique or methodology, application of an existing methodology to a new problem), and should discuss the importance of the work in the international context.