Results 81 to 90 of about 730,496 (259)

Petrogenesis of diachronous mixed siliciclastic-carbonate megafacies in the cool-water Oligocene Tikorangi Formation, Taranaki Basin, New Zealand [PDF]

, 2003
The Oligocene (Whaingaroan-Waitakian) Tikorangi Formation is a totally subsurface, lithostratigraphically complex, mixed siliciclastic-limestone-rich sequence forming an important fracture reservoir within Taranaki Basin, New Zealand.
Nelson, Campbell S., Hood, Steven D., Campbell S. Nelson, Kamp, Peter J.J., Steven D. Hood, Peter J. J. Kamp   +5 more
core   +1 more source

Review and prospects of shear test of bolted rock joints

Deep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren, Fan Yang, Manchao He, Yong Yuan, Zhigang Tao   +4 more
wiley   +1 more source

Integrated Geology–Engineering Evaluation and Strategy Optimization for Tight Oil Development in Complex Fault Blocks: A Case Study of the G5 Block, Nanpu Sag

Energies
To address core challenges involving severe reservoir heterogeneity, complex fracture systems, and rapid energy depletion encountered in the development of tight oil reservoirs in the G5 block of the Nanpu Sag, this study performs a systematic analysis ...
Zhongliang Yu, Tongfeng Cao, Yang Sun, Hong Liu, Jian Cui, Rong Fan, Yajuan Ju, Qian Cheng, Hengbao Li, Junyi Xia   +9 more
doaj   +1 more source

Shear behavior of bolt–grout interfaces under constant normal stiffness: Influence of grout strength and thickness

Deep Underground Science and Engineering, EarlyView.
The effects of grout strength and thickness on the shear behavior of bolt–grout interfaces (BGI) under constant normal stiffness conditions are investigated. Shear strength, failure modes, and acoustic emission characteristics are examined. The findings reveal that grout strength exerts a significantly greater influence on BGI shear strength and ...
Sunhao Zhang, Dongqi Shang, Yujing Jiang, Jinge Zhang, Hongbin Chen, Tianqi Jiang   +5 more
wiley   +1 more source

5.

, 1990
1
Proc. Fracture and
core  

A Fracture Mechanics-based Method for Prediction of Cracking of Circular and Elliptical Concrete Rings under Restrained Shrinkage [PDF]

, 2014
This article has been made available through the Brunel Open Access Publishing Fund.A new experimental method, utilizing elliptical ring specimens, is developed for assessing the likelihood of cracking and cracking age of concrete subject to restrained ...
Dong, W, Wu, Z, Zhou, X, Zhou, Xiangming, Dong, Wei, Wu, Zhimin   +5 more
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

3D geological modeling of strongly heterogeneous dual-medium deep carbonate reservoirs： A case study of Feixianguan-Changxing Formations in Puguang Gas Field

Youqi dizhi yu caishoulu
The carbonate reservoir in Puguang Gas Field has the characteristics of large burial depth， developed reef-flat facies， poor matrix properties， widespread development of natural fractures， and strong heterogeneity.
LI Hui, YOU Yuchun, ZENG Daqian, LIU Guoping, ZHENG Wenbo, ZHANG Rui   +5 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

Joseph C. & Elizabeth C. Walter Geology Library Annual Report 1985-86

, 1986
Contents: Summary, Goals and ObjectivesUT ...
Geology Library
core   +1 more source