Results 41 to 50 of about 37,041 (202)

Modeling seismic wave propagation and amplification in 1D/2D/3D linear and nonlinear unbounded media

, 2010
To analyze seismic wave propagation in geological structures, it is possible to consider various numerical approaches: the finite difference method, the spectral element method, the boundary element method, the finite element method, the finite volume ...
Bard P. Y., Bard P. Y., Bonnet M., Bonnet M., Bouchon M., Chaljub E., Chopra A. K., Dobry R., Frankel A., Hughes T. J. R., J. F. Semblat, Komatitsch D., Manolis G. D., Sanchez-Sesma F. J., Sanchez-Sesma F. J., Semblat J. F., Sommerville P. G., Sánchez-Sesma F. J., Wirgin A., Wolf J. P.   +19 more
core   +6 more sources

Effects of elevated temperature on physical and mechanical properties of carbonate rocks in South-Southern Nigeria [PDF]

, 2018
Purpose. Limestone and marble are carbonate rocks with several structural and engineering applications. The physical and mechanical properties of the rocks are fundamental as they determine their suitability for various use.
Idris, M.A.
core   +1 more source

Investigation on hard‐rock breaking performance and auxiliary mechanism of picks assisted with both‐sided high‐pressure water jets

Deep Underground Science and Engineering, EarlyView.
This paper investigates the high‐pressure water jet‐pick combined rock‐breaking mode (HPC), which employs high‐pressure water jets to precut grooves on both sides of the picks. The rock‐breaking patterns and performance of the HPC method are obtained, and the auxiliary rock‐breaking mechanism of water jet grooving is revealed.
Jingjing Lu, Jiancheng Xiao, Hui Zhou, Xiao Ma, Congcong Hou, Jian Cui, Fujian Yang   +6 more
wiley   +1 more source

Evaluation of volumetric strain quantities and types of volumetric strain curves under failure-deformation process of hard brittle rocks [PDF]

, 2018
Purpose. The aim of this work is to show whether or not a relationship exist among the different volumetric strain quantities and to assess also whether the volumetric quantities are related to the different types of volumetric strain curves under ...
Afu, D.J., Ajaka, E.O., Akinbinu, V.A.
core   +1 more source

Slip versus dilation tendency parameter space as a tool for prospecting structurally controlled geothermal systems in greenfield: insights from the greater Ruhr region

Deep Underground Science and Engineering, EarlyView.
This study highlights that with the static and time‐dependent evolution of slip versus dilation tendency parameter space, structurally controlled deep geothermal systems can be selected within areas of higher permeability and lower seismic hazard. Abstract Faults play a vital role in the Earth's hydraulic system by facilitating fluid flow when dilating
Michal Kruszewski, Alessandro Verdecchia, Oliver Heidbach, Rebecca M. Harrington, David Healy   +4 more
wiley   +1 more source

Influence of mechanical characteristics of deep composite salt-gypsum layers on safe drilling of directional wells: a case study of Palaeogene in the Kuqa Piedmont structure, Tarim Basin, China

Frontiers in Earth Science, 2023
The directional wells can effectively improve the development efficiency of deep and ultra-deep pre-salt oil and gas reservoirs in the Kuqa Mountains of Tarim basin.
Chao Fang, Chao Fang, Shiyuan Li, Shiyuan Li, Qing Zhao, Qing Zhao, Hui Zhang, Zhaowei Chen, Zhaowei Chen, Hao Huang, Hao Huang, Zili Lin, Zili Lin, Jinchao Fan, Jinchao Fan, Enbo Liu, Enbo Liu   +16 more
doaj   +1 more source

Simulation of sample testing under compression with the help of finite-element model of rocks being broken [PDF]

, 2018
Purpose of the paper is to develop mathematical model describing nature of argillous and salt samples under compression and to make available microdefects using finite-element method. Methods.
Chantsev, V, Olovyannyy, A
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

Geophysical data interpretation of the tectonic deformation lithofacies belts in the ore field: Application in ore prospecting

Dizhi lixue xuebao, 2021
Based on the physical parameters of the rocks (ores) and the genetic types of ore deposits, the geophysical exploration models have met issues of multiple solutions for deep prospecting prediction.
ZHANG Baolin, LYU Guxian, YU Jianguo, LIANG Guanghe, XU Xingwang, LI Zhiyuan, ZHANG Qipeng, SHI Xiaoming, WEI Junbin, XU Daoxue, LI Xu, ZHAO Peng   +11 more
doaj   +1 more source

Laboratory studies of a high-strength roof bolting by means of self-extending mixtures [PDF]

, 2019
Purpose is to analyze parameters of a new method to fasten roof bolts with the help of nonadhesive mixtures extending while hardening along with the development of high expansion pressures. Methods.
Isaienkov, O, Kurdiumow, D, Sakhno, I, Sakhno, S   +3 more
core   +1 more source