Results 41 to 50 of about 1,764 (244)

Broad Skills, Smaller Footprints? Generalist CEOs and Firm Biodiversity Exposure

Business Strategy and the Environment, EarlyView.
ABSTRACT We examine whether CEO generalist skills predict firm‐level biodiversity risk exposure, an emerging strategic and financial concern. Using the biodiversity indicator developed based on textual analysis and the General Ability Index, we find that firms led by generalist CEOs are associated with significantly lower disclosed biodiversity risk ...
Hafiz Hoque, Saadia Irfan, Linh Thi Tue Tran   +2 more
wiley   +1 more source

Numerical modeling of earthen dam breach due to piping failure

Water Science and Engineering, 2019
Based on model tests of earthen dam breach due to piping failure, a numerical model was developed. A key difference from previous research is the assumption that the cross-section of the pipe channel is an arch, with a rectangle at the bottom and a ...
Sheng-shui Chen, Qi-ming Zhong, Guang-ze Shen   +2 more
doaj   +1 more source

Permeability of granite from a shallow buried mountain pipe gallery tunnel under unloading confining pressure

Deep Underground Science and Engineering, EarlyView.
Triaxial compression tests under unloading confining pressure conditions were conducted to systematically analyze the permeability behavior of granite retrieved from the different classification surrounding rocks. Abstract The rock mass within mountain tunnels undergoes complex changes in permeability, strength, and deformation during tunneling ...
Xiaoyan Zhang, Yonghua Ye, Jianping Zuo, Baojiang Han, Weigang Jiao   +4 more
wiley   +1 more source

Experimental study on water transfer of soil-rock mixtures under freezing action

Yantu gongcheng xuebao
The frost-heaving failure of earth-rock dam slopes is mainly caused by the combined action of sand and gravel cushion, frost heaving of dam fills and water migration.
LI Zhuo 1, 2, JIANG Xin 3, ZHANG Jixun 3, ZHAO Yu 3, WANG Yuqing 3, LU Yang 3
doaj   +1 more source

Landslide model for slope of reservoir bank under combined effects of rainfall and reservoir water level

Yantu gongcheng xuebao, 2017
According to the landslide characteristics of the slope of the reservoir bank of Longjiang Hydropower Station in Yunnan Province, laboratory tests are conducted to investigate the characteristics of the landslide under the combined effects of rainfall ...
LI Zhuo 1, 2, 3, HE Yong-jun 1, 2, SHENG Jin-bao 1, 2, 3, LI Hong-en 1, 2, LI Zheng 1, 2, YANG Yang 1, 2
doaj   +1 more source

Earthquake Response Analysis and Evaluation for Earth-Rock Dams

, 2012
An earthquake is any shaking of the ground, usually intense shaking of the ground caused by either natural sources or by humans. There are many different types of earthquakes. The most common is tectonic earthquake, which occur when rocks in the earth's crust break due to geological forces created by movement of tectonic plates.
Zhenzhong Shen, Lei Gan, Juan Cui, Liqun Xu   +3 more
openaire   +2 more sources

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

Deep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza, Hendrik Grobler, Peter Apata Olubambi, Moshood Onifade, Manoj Khandelwal   +4 more
wiley   +1 more source

Study on Application of Uneven Waste Slag in Secondary Dam of Qianjiang River at Datengxia Gorge Water Conservancy Project

Renmin Zhujiang, 2022
The shell of the secondary dam of Qianjiang River at Datengxia Gorge is filled with waste slag materials with a large change in material properties and uneven gradation and mud content.The quality of dam materials is difficult to control,and there is no ...
FAN Suixing, TU Xiaoxia
doaj  

Experimental study on the dynamic behavior of rubber concrete under compression considering earthquake magnitude strain rate

Journal of Civil Engineering and Management, 2020
To examine the compressive dynamic performance of rubber concrete, a uniaxial compression experimental study on rubber concrete was carried out using a hydraulic servo based on five different rubber substitution rates under eight different earthquake ...
Furong Li, Yongyi Wu, Xinghua Xie, Kai Zhao, Zhenpeng Yu   +4 more
doaj   +1 more source

Dynamic geo‐hydrogeological monitoring‐driven situational awareness for real‐time floor water inrush risk prediction in deep mining

Deep Underground Science and Engineering, EarlyView.
The fused data extracted from the distributed monitoring system as the data basis, combined with dynamic geological data, are imported into a deep learning model. As the geological conditions of mining and excavation change, the risk of water inrush at the working face is retrieved in real time.
Yongjie Li, Huiyong Yin, Fangying Dong, Tao Wu, Chao Zhang   +4 more
wiley   +1 more source