Results 91 to 100 of about 57,328 (310)
Best Practices in Underground Coal Gasification
, 2019 Elizabeth Burton +2 more
openaire +3 more sources
Ensemble Learning Model on Artificial Neural Network-Backpropagation (ANN-BP) Architecture for Coal Pillar Stability Classification [PDF]
arXiv, 2023 Pillars are important structural units used to ensure mining safety in underground hard rock mines. Therefore, precise predictions regarding the stability of underground pillars are required. One common index that is often used to assess pillar stability is the Safety Factor (SF).
arxiv
Minerals, 2022 In the process of underground gasification of coal, the top rock of coal seam will experience a certain high temperature action and be in a complex stress environment. Therefore, it is of great theoretical and engineering significance to study the effect
Ji’an Luo, Jun He
semanticscholar +1 more source
Energy Science &Engineering, Volume 13, Issue 3, Page 1062-1078, March 2025.Increasing cavity temperature causes an exponential increase in thermal stress and the number of created cracks. Therefore, UCG cavity growth escalates with an increasing cavity temperature ABSTRACT The mechanism of cavity growth in a UCG process is mainly dependent on the presence of fractures and microcracks in the coal seam.
Mohammadreza Shahbazi +3 more
wiley +1 more source
Survey of the world practice of implementing energy-efficient technologies in terms of mining enterprises [PDF]
, 2019 Purpose is the analysis of world practice of applying the best available techniques to increase energy saving and energy efficiency of mining enterprises being the important factor of the economic development. Methods.
Akulinin, F +4 more
core +1 more source
Protocol for a Study of the Effect of Surface Mining in Central Appalachia on Adverse Birth Outcomes [PDF]
arXiv, 2020 Surface mining has become a major method of coal mining in Central Appalachia alongside the traditional underground mining. Concerns have been raised about the health effects of this surface mining, particularly mountaintop removal mining where coal is mined upon steep mountaintops by removing the mountaintop through clearcutting forests and explosives.
arxiv
UPSLAM: Union of Panoramas SLAM [PDF]
arXiv, 2021 We present an empirical investigation of a new mapping system based on a graph of panoramic depth images. Panoramic images efficiently capture range measurements taken by a spinning lidar sensor, recording fine detail on the order of a few centimeters within maps of expansive scope on the order of tens of millions of cubic meters.
arxiv
Energies, 2022 The evolution of fracture zone controls the safety of underground coal gasification (UCG) in terms of gas emission and water leakage. In order to understand the fracture propagation in the confining rock of a UCG cavity with various influence factors ...
Zhen Dong +9 more
semanticscholar +1 more source
Energy Science &Engineering, Volume 13, Issue 3, Page 980-994, March 2025.ABSTRACT Climate change is caused by an increase in global temperatures, known as global warming. This is largely attributed to the rising levels of greenhouse gases in the atmosphere, with carbon dioxide emissions from fossil fuel power plants being the major culprit. Implementing carbon capture, utilization, and storage (CCUS) strategies is essential
Donald Obi +2 more
wiley +1 more source
Petroleum Exploration and Development, 2019 Based on the present situation and trend of underground coal gasification in China and overseas, this article puts forward the basic concept, mechanism and mode of underground coal gasification, and presents the challenges, development potential and ...
Caineng ZOU +5 more
doaj