Results 81 to 90 of about 711,778 (240)

Burden related to blasthole diameter in rock blasting

, 1992
Since the 1950s, most of the empirical formulas in rock blasting have incorporated a linear relation between burden and blasthole diameter. Recently it has been shown that a non-linear relation is more accurate for blasthole diameters in 40-400 mm range.
Rustan, Agne,, Kou, S-Q,
core   +1 more source

Opportunities for Australia Amid China's Carbon‐Neutral Transition: Input–Output Approach With Analysis of Australian Renewable Potential

Sustainable Development, EarlyView.
ABSTRACT A major transformation in China's energy mix is underway as the country pursues carbon neutrality by 2060, posing significant structural challenges for Australia as a major exporter of carbon‐intensive resources. This study examines the economic impacts of China's decarbonisation on Australia by applying static and dynamic input–output (IO ...
Jinyong (Edward) Sung
wiley   +1 more source

Advancements and future prospects in the fundamental theories of rock blasting research Ⅱ—Dynamic–static relationship

工程科学学报
Blasting is a process in which the chemical energy of explosives is rapidly released, causing strong impact on the rock mass and achieving efficient rock fragmentation.
Renshu YANG, Chenxi DING, Liyun YANG, Zhe SUI, Yanbing WANG, Jinjing ZUO, Songlin HE   +6 more
doaj   +1 more source

Towards Responsible Mining in Africa: Problematising the Environmental and Public Health Concerns of Artisanal and Small‐Scale Gold Mining in Ghana

Sustainable Development, EarlyView.
ABSTRACT There have been emerging media reports on the impact of cyanide and mercury use in artisanal and small‐scale gold mining (ASGM) operations on community health, especially among pregnant and non‐pregnant women, ASGM miners, and children in rural Africa.
Francis Arthur‐Holmes, Emmanuel Selasi Tomude, Steve Ahenkora Amoako   +2 more
wiley   +1 more source

When money isn't everything: Identifying stage‐based patterns of entrepreneurial resource acquisition

Strategic Management Journal, EarlyView.
Abstract Research Summary Scholars often examine how entrepreneurs' existing ties predict resource acquisition. We investigated the reverse: How does the act of pitching generate new ties with investors? Using the context of the Slow Money community, we analyzed social entrepreneurs' pitches to impact investors.
Esther Leibel, Denise Falchetti, Siobhan O'Mahony   +2 more
wiley   +1 more source

Impacts of Introducing Automation in Mining Operations: Insights From Worker Perceptions

Safety Science and Technology, EarlyView.
This study shows that trust is the strongest predictor of mining workers' situation awareness when using automated systems. Communication and coordination also improve situation awareness through trust, highlighting the need for human‐centered system design and training that support calibrated trust and effective teamwork in safety‐critical operations.
Loreto Codoceo‐Contreras, Maureen Hassall   +1 more
wiley   +1 more source

Damage evolution law of multi-hole blasting igneous rock and quantitative evaluation model of damage degree based on fractal theory and clustering algorithm

Scientific Reports
The geological phenomenon of igneous rock invading coal seam is widely distributed, which induces mining risk and affects efficient mining. The pre-splitting blasting method of igneous rock is feasible but difficult to implement accurately, resulting in ...
Hongbin Zhao, Shihao Tu, Kaijun Miao, Long Tang, Jieyang Ma, Benhuan Guo   +5 more
doaj   +1 more source

Experimental and design‐oriented research on fiber reinforced concrete segmental tunnel linings: A systematic review

Structural Concrete, EarlyView.
Abstract The use of fiber reinforced concrete (FRC) in precast tunnel segments is among the most established and representative applications of this material. Over the past two decades, numerous tunnel linings were constructed with partial or total substitution of conventional steel reinforcement by fibers, this yielding to quantifiable benefits in ...
Vladimir Rusanov, Stanislav Aidarov, Pablo Pujadas, Tai Ikumi, Albert de la Fuente   +4 more
wiley   +1 more source

Cold‐curing effects on the strength development and sulfuric acid resistance of basalt fiber‐reinforced hybrid alkali‐activated slag mortars

Structural Concrete, EarlyView.
Abstract Cold weather conditions impose substantial constraints upon the performance and long‐term resilience of concrete materials. Alkali‐activated slag (AAS) presents itself as a promising substitute, exhibiting sustained hydraulic activity even when exposed to ambient conditions characterized by low temperatures.
Zeynep Bahçeci, Murat Dener, Ahmet Benli, Bilal Balun   +3 more
wiley   +1 more source

Research on cumulative damage effects and safety criterion of surrounding rock in bench blasting of a large cross-section tunnel

Alexandria Engineering Journal
By integrating an established rock damage model into the LS-DYNA computer code and using a widely used method for equivalently simulating multiple blastholes detonation, the damage processes of surrounding rock with different properties under the bench ...
Ling Ji, Yingkang Yao, Chuanbo Zhou, Zhen Zhang, Haiqing Cao, Tingyao Wu   +5 more
doaj   +1 more source