Influence of adjacent undercutting line positions on surrounding rock stability in block caving [PDF]
Scientific ReportsIn the block caving mining method, deformation and collapse can occur in roadways due to vertical stress concentration in front of the undercutting line.
Yong Cao, Xinzhu Hua, Heng Zhang
doaj +5 more sources
Investigating the factors influencing vertical stress ahead of the undercutting line in block caving [PDF]
Scientific ReportsIn block caving mines, stress evolution induced by undercutting poses a significant threat to the integrity of extraction structures. Focusing on the Pulang Copper Mine, this research analyzes the controlling factors behind the vertical stress ...
Yong Cao +4 more
doaj +4 more sources
Undercutting analysis of recess action worm gear drives with double-depth teeth
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2023 According to the theory of gearing, the mathematical model of a recess action (RA) worm gear with double-depth teeth has been developed in the previous study.
Wei-Liang CHEN, Chung-Biau TSAY
doaj +3 more sources
Design and Manufacturing of a Miniature Double-Circular-Arc Line Gear Pump [PDF]
MicromachinesTraditional involute gear pumps find it difficult to meet the requirements of miniaturization and high performance because of the undercutting, trapped oil, and flow pulsation.
Yangzhi Chen +4 more
doaj +2 more sources
Study on Design Constraints of Conjugated Straight-Line Internal Gear Pair
Machines, 2023 In order to solve the problem that the design constraints of the conjugated straight-line internal gear pair are unclear, the designing and checking of gear pairs requires repeated trial and error.
Yundong Liang +3 more
doaj +1 more source
Modeling of the sliding process in condition of disturbed soil stability [PDF]
Glasnik Srpskog Geografskog Društva, 2010 Main goal of this investigation is to present a mechanism, terrain shaping of a certain slope during the sliding process, in time history, up to its final form.
Stojnić Nedeljko
doaj +1 more source
Evolution features of riverbeds near underwater crossing line pipes: An experimental study
Natural Gas Industry B, 2020 It is of important significance to study the evolution law of the riverbed near underwater crossing line pipes for ensuring the safe operation of oil and gas pipelines and reducing the risk of damage by water flood disasters.
Qian Yang +3 more
doaj +1 more source
Numerical Analysis for the Caving Characteristics of Rock Mass with Inclined Joints in Caving Mining
Advances in Civil Engineering, 2021 In caving mining, the successful initiation and propagation of caving require one low-dip joint set. However, not every mine has a low-dip joint set. The Hemushan Iron Mine in China was taken as the engineering background, and the caving characteristics ...
Jinbo Sui +3 more
doaj +1 more source
AUTOMATED INSPECTION OF POWER LINE CORRIDORS TO MEASURE VEGETATION UNDERCUT USING UAV-BASED IMAGES [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 Abstract. Power line corridor inspection is a time consuming task that is performed mostly manually. As the development of UAVs made huge progress in recent years, and photogrammetric computer vision systems became well established, it is time to further automate inspection tasks.
Maurer, M. +3 more
openaire +5 more sources
Danger comes from all fronts: predator-dependent escape tactics of túngara frogs. [PDF]
PLoS ONE, 2015 The escape response of an organism is generally its last line of defense against a predator. Because the effectiveness of an escape varies with the approach behaviour of the predator, it should be advantageous for prey to alter their escape trajectories ...
Matthew W Bulbert +2 more
doaj +1 more source