Powered roof support is equipped with a hydraulic control system to ensure its required load
capacity. The main problem arising from powered roof support during exploitation is …

Mechanical mining is a widely used method of separating materials from the face to obtain a
useful mineral (eg, coal, metal ores, salts, and diamonds), to make underground workings …

A mechanical support in a longwall complex requires proper supervision and control of
operating parameters because it is responsible for the safety of machines and workers. Its …

This paper presents the results of lab-simulated tests on longwall powered supports under
dynamic loading conditions. The tests were carried out on a test site, where the tested prop …

The hydraulic system of a powered roof support performs two functions. The first function is
to control the powered roof support in the extraction wall. The second function is to protect …

A coal mine in the central district of Botswana is experiencing premature failure of conical
picks which mine 150–350 tons of coal/pick rather than 400 tons/pick specification. This has …

The powered roof support in a mining complex protects machines and people from the
harmful effects of the rockmass. The design of the powered roof support should be strictly …

Efficient mining machinery operation is essential for coal mining enterprises to reduce
production costs, improve production efficiency, and maximize profits. As a key consumable …

Conical picks are applied to rock breaking, and the cutting parameters greatly influence
cutting performance and rock damage. A conical pick rock-cutting numerical simulation …

Picks are key components for the mechanized excavation of coal by mining machinery, with
their wear state directly influencing the efficiency of the mining equipment. In response to the …