Results 131 to 140 of about 81,970 (281)

Lateral migration of hillcrests in response to channel incision in soil-mantled landscapes [PDF]

, 2005
Anderson, Andrews, Benda, Bishop, Bras, Brimhall, Burbank, Chen, Crosby, Culling, David Jon Furbish, Densmore, Dietrich, Fernandes, Finlayson, Furbish, Gabet, Gabet, Hack, Harbor, Hasbargen, Heimsath, Heimsath, Heimsath, Heimsath, Howard, Howard, Howard, Jyotsna, Kirchner, Kirkby, Kobor, Mather, Matmon, McKean, Meigs, Meyerhof, Mudd, Pelletier, Reneau, Riebe, Roering, Roering, Roering, Simon Marius Mudd, Sklar, Small, Smith, Snyder, Tucker, Tucker, van der Beek, Whipple, Whipple, Willgoose, Young, Young, Zaprowski   +57 more
core   +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

Responses of soil-mantled hillslopes to transient channel incision rates [PDF]

, 2007
Ahnert, Ahnert, Anderson, Andrews, Arrowsmith, Carslaw, Carson, Crosby, Culling, Culling, Culling, David Jon Furbish, Davis, Deen, Dietrich, Fernandes, Furbish, Furbish, Gabet, Gabet, Gilbert, Gilbert, Hack, Heimsath, Heimsath, Heimsath, Heimsath, Heimsath, Howard, Jyotsna, King, Kirkby, Mudd, Mudd, Mudd, Nash, Nash, Neal, Paola, Penck, Roering, Roering, Roering, Roering, Roering, Shrestha, Simon Marius Mudd, Whipple, Wilkinson, Yoo, Young   +50 more
core   +1 more source

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

Deep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun   +6 more
wiley   +1 more source

Exploring wave propagation behaviors in rock: A grain‐based perspective on mineral structures

Deep Underground Science and Engineering, EarlyView.
This study investigates wave propagation in rock at the grain scale using a grain‐based model, revealing that mineral elastic modulus significantly influences wave attenuation while grain size and distribution have limited effects. A novel peak particle velocity attenuation prediction model is proposed and validated for grain‐scale wave propagation ...
Zhiyi Liao, Jiachen Xu, Kai Zhang, Changtai Zhou   +3 more
wiley   +1 more source

Biofunctool®: a new set of indicators to assess the impact of land management onsoil functioning [PDF]

, 2019
The concept and methods to assess soil quality have been widely debated in the literature for the last twenty years. We developed a new framework to assess soil quality following an integrative approach based on the measurement of soil dynamic functions ...
Bessou, Cécile, Brauman, Alain, Gay, Frédéric, Panklang, Phantip, Suvannang, Nopmanee, Thaler, Philippe, Thoumazeau, Alexis, Tivet, Florent   +7 more
core  

Motion planning and control of an installation robot for attitude adjustment of arc parts in underground shield tunneling

Deep Underground Science and Engineering, EarlyView.
Inspired by spiders, the multilegged walk‐through assembling robot for arc parts achieves high‐precision synchronous control under heavy loads through dual‐layer hydraulic pose dynamics modeling and hierarchical pressure optimization, significantly enhancing shield tunneling assembly efficiency and precision.
Quan Xiao, Guofei Xiang, Liang Liao, Lai Wei, Hongli Wang, Songyi Dian   +5 more
wiley   +1 more source

Responses of salmonids to habitat changes [PDF]

, 1991
Streams in western North America provide spawning and rearing habitats for several species of salmon and trout that are of substantial economic importance in the region.
Bisson, P. A., Hall, James D., Hicks, Brendan J., Sedell, J. R.   +3 more
core   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

Deep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang, Jinxiao Liu, Gaoshuo Zhang, Wenxin Li, Changdi He   +4 more
wiley   +1 more source