Use of 3D Inferred Imagining for Detection of Changes in Geology in Longwall-Type Excavation Front

Abstract

In this paper, I will show and describe a method of integrating infrared images with a 3D model of the front of an excavation in the longwall type of workings. I will also test the created 3D model for its potential usefulness in geological prospecting, used for looking for changes in geological layout at the front of the excavation. Geological information on the amount of coal in the front is important for the economic side of the excavation. The mine does not want to take out waste rock, but mostly for the safety of operations. The longwall shearers and plows are not designed for excavation in extremely changeable conditions, so if too much shale appears, this might change the speed and economic results of excavation. In addition, if a fold appears, this can destroy the excavating complex. Currently, the geological survey requires a geologist to get to the front, often to the unsupported roof part of the wall, clean the front and sample, and measure the geology. This is dangerous for the geologist. Thus, remote, infrared measurements would improve the safety of the staff and allow the survey to be taken in more places along the longwall. In this paper, I will also propose how such a system could be implemented and what the limitations are.

Digital Tools for Data Acquisition and Heritage Management in Archaeology and Their Impact on Archaeological Practices

“…Additionally, infrared (IR) photographic documentation offers advantages but has its limitations [11,12]. Retrospective photogrammetry refers to the use of historical photographs or images to extract 3D geometric and geospatial information about objects, landscapes, or structures from the past.…”