Results 171 to 180 of about 268,148 (308)

Optimal mud pressure design using nonlinear failure criteria for wellbores in shaley sedimentary reservoir

Deep Underground Science and Engineering, EarlyView.
The present study uses the Modified Mohr‐Coulomb true‐triaxial failure criterion (MMC_TT), which predicts the strength of rock better than the MGC criterion in laboratory true‐triaxial tests to overcome the limitations. Moreover, based on the data from previously published five vertical wells in the Krishna‐Godavari basin (K‐G basin), an empirical ...
Ravindra K. Burnwal, Aditya Singh
wiley   +1 more source

Isotopic evidence for volatile loss driven by South Pole-Aitken basin-forming impact. [PDF]

Proc Natl Acad Sci U S A
Tian HC, Zhang C, Li WJ, Xue D, Wang J, Yang W, Liu YH, Lin Y, Li XH, Wu FY.   +9 more
europepmc   +1 more source

Blasting effects of cross‐fault deep‐buried excavation on adjacent existing tunnel stability

Deep Underground Science and Engineering, EarlyView.
Based on the theoretical analysis of cylindrical wave propagation in a deep rock mass in the fault with a filling layer, the calculation method of peak particle velocity caused by wave propagation in the existing tunnel is established. The viscoelastic characteristics of a rock mass are examined in the analysis.
Shaobo Chai, Lianzeng Chai, Chao Meng, Kai Liu, Lang Song, Shaojie Zheng   +5 more
wiley   +1 more source

Integration of geospatial techniques and artificial neural networks for groundwater potential zonation in India. [PDF]

Sci Rep
Badapalli PK, Nakkala AB, Pujari PS, Gugulothu S, Kottala RB, Mannala P, Alkhuraiji WS, Thamaga KH, Zhran M.   +8 more
europepmc   +1 more source

The Future of Field Geology, Open Data Sharing and CyberTechnology in Earth Science

The Sedimentary Record, 2016
Marjorie A. Chan, Shanan E. Peters, Basil Tikoff   +2 more
openaire   +1 more source

Failure mechanism of the coal wall at the working face based on an eccentric compression mechanical model

Deep Underground Science and Engineering, EarlyView.
In this study, the nonuniform distribution of the bearing pressure in front of the coal wall has been revealed based on in situ monitoring data and numerical simulation results. Therefore, an eccentric compression mechanical model of the coal wall was established to study the deformation and failure characteristics of a coal wall. The slenderness ratio
Maolin Tian, Jiabao Wang, Changsheng Wang, Shijie Sun, Lijun Han, Qingbin Meng, Sunhao Zhang   +6 more
wiley   +1 more source

Research on the application of unmanned aerial vehicle aeromagnetic measurement based on rubidium optical pump magnetometer. [PDF]

Sci Rep
Zhou H, Qiao Z, Yuan P, Huang Y, Zhu L, Yang C, Wang L, Zheng L, Wang Y, Wu B, Lin Q.   +10 more
europepmc   +1 more source

Hotspots, trends, and regional focus on oil or gas exploration: A bibliometric comparative study

Deep Underground Science and Engineering, EarlyView.
This paper explores the research trends in global oil and gas exploration through the bibliometric analysis of 3460 articles collected from the Web of Science database on oil and gas exploration published from 2013 to 2023. The research hotspots, objects, regional distribution, methods, and evaluation methods of oil and gas exploration are analyzed and
Jihong Wang, Zhongkai Li, Jianguo Wang, Zhiqiang Li   +3 more
wiley   +1 more source

Spatial analysis of groundwater potential mapping using the geospatial technology in the Northern Ethiopia, Amhara Region. [PDF]

Sci Rep
Nigusse AG, Baye G, Berhane G, Zenebe A, Gebremedhin E.   +4 more
europepmc   +1 more source

Geology and Petrography of the Northern Yamato Mountains, East Antarctica (Earth Sciences)

Geology and Petrography of the Northern Yamato Mountains, East Antarctica (Earth Sciences)
P(論文) In the northern Yamato Mountains, there are two groups of rocks. One is the syenite gneiss group which was metamorphosed under the granulite facies conditions. The other is the granite gneiss group which was metamorphosed under the amphibolite facies conditions. Besides, metabasites and acid dykes are found to accompany them. There is gradational
openaire