Szczegóły publikacji
Opis bibliograficzny
Laboratory testing of a long expansion rock bolt support for energy-absorbing applications / Krzysztof SKRZYPKOWSKI // E3S Web of Conferences [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 2267-1242. — 2018 — vol. 29 art. no. 00004, s. 1–9. — Wymagania systemowe: Adobe Reader. — Tryb dostępu: https://goo.gl/CBQQ7k [2018-02-05]. — Bibliogr. s. 8–9, Abstr. — Publikacja dostępna online od: 2018-01-31. — XVIIth Conference of PhD students and young scientists : Szklarska Poręba, Poland, May 23-26, 2017
Autor
Dane bibliometryczne
| ID BaDAP | 112161 |
|---|---|
| Data dodania do BaDAP | 2018-02-11 |
| DOI | 10.1051/e3sconf/20182900004 |
| Rok publikacji | 2018 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | E3S Web of Conferences |
Abstract
The main purpose of rock support and reinforcement in underground mining is to maintain excavations safe and open for their intended lifespan. The basic type of rock mass reinforcement method both in ore and hard coal mining is rock bolt support. Very often, existing bolt support systems are not always capable of providing a reliable controlled performance. Therefore, in recent years energy-absorbing bolts which are exposed to dynamic loading, for example from rock burst caused by high rock stresses, earthquakes, or blasting have appeared. In this article particular attention was paid to short and long expansion bolts. Quasi-static tests of expansion bolts were carried out at the laboratory test facility in simulated mining conditions, especially for the KGHM Polska Miedź S.A. mines. In the underground mines of the Legnica-Głogów Copper District (LGOM) the main way to protect the room excavation is rock bolt support with a length from 1.2 m to 2.6 m. Rock bolt support longer than 2.6 m is considered as additional support of excavations and is increasingly being used to reinforce the roofs. The comparisons of energy-absorbing short and long expansion bolts with a length of 1.8m, 3.6m and 5.2m were presented. In addition, for elastic and plastic range of each bolts were determined.
