Martin Junker

Prüfwesen im Bergbau – Eine Frage der Qualität

Das Prufwesen der RAG Aktiengesellschaft beschaftigt sich seit mehr als 40 Jahren mit den Themen Qualitatssicherung, Werkstoffprufung, Schadensanalytik und -management, Gutachtenerstellung sowie Bauteilprufung oder Inspektionen. Basis der gesamten Leistungen sind wissenschaftlich fundierte Analyse- und Prufverfahren sowie das breit gefacherte Fachwissen der Mitarbeiter. Der Beitrag gibt einen Uberblick uber die Tatigkeitsschwerpunkte des Prufinstituts der RAG Mining Solutions. Testing in mining – a question of quality The testing department of the company RAG has been concerned for more than 40 years with quality assurance, materials testing, damage analysis and management, production of reports and the testing or inspection of construction elements. All these services are based on scientifically founded analysis and testing procedures and the wide range of professional knowledge of the employees. The article gives an overview of the main activities of the testing institute of RAG Mining Solutions.

Concept of Shield-Data-Based Horizon Control for Longwall Coal Mining Automation

Abstract Coal is an important fossil fuel and will also be for the next decades. Thus, there have been several approaches and researches in longwall coal mining automation which are mainly focused on the shearer as the executing machine. In addition approaches of coal interface detection have to be taken into account for horizon control to reach autonomous shearer guidance. The shield-data-based horizon control is an alternative control approach which integrates data from the roof support as input and feedback to reach an automatic cutting drum height adjustment with the aim to follow the seam trend, generate a defined face opening and keep it. This article contains the basics and difficulties of the control concept including a short introduction to the simulation model as well as the scheme and the description of the shield-data-based horizon control. Some simulation results will be shown, as well as results of the experimental tests.