Material failure may occur in a variety of situations dependent on stress conditions,
temperature, and internal or external load conditions. Many of the latest engineered …

This article deals with a static and quasi-static load using the maximum power of a hydraulic
pump. Additionally, quasi-static coefficients for the partially embedded rock bolts were …

The article presents methods of making the rock bolt support more yieldable, especially for a
stratified roof. Alongside the increasing depth of exploitation of raw material deposits, rock …

The article presents a novel yielding mechanism, especially designed for the rock bolt
support. Mechanical rock bolts with an expansion head and equipped with one, two, four …

The appearance of joints in the rock tunnels makes the rock mass show obvious anisotropy
and discontinuity in physical and mechanical properties, which has a significant influence on …

The article presents the impact of geological and mining factors on the stability of room
excavations in the Legnica-Głogów Copper District (LGOM) in Poland. In underground …

Rock bolt support is one of the key methods to maintain the stability of underground space.
The durability of the rock bolt can be weakened by cyclic loading, resulting in premature …

In this article, a model of ore deposit in form of a lense carried out in the MineScape
program, is presented. The lense had a thickness of 30 m, length along the strike 200 m, and …

Basalt fiber reinforced polymer (BFRP) bolt has the advantages of high tensile strength, low
quality and corrosion resistance. This kind of bolt has a potential application prospect in …

Non-destructive tests (NDTs) represent one of the solutions that aid engineers in evaluating
the strength of materials. However, the results obtained using such tests are still …