Results 71 to 80 of about 1,369,373 (261)

Progress and development of volume stimulation techniques

Petroleum Exploration and Development, 2018
Based on the theoretical study and field application of volume stimulation in horizontal wells over the past 10 years, the core connotation of volume stimulation was further interpreted.
Yun XU, Qun LEI, Ming CHEN, Qi WU, Nengyu YANG, Dingwei WENG, Deqi LI, Hao JIANG   +7 more
doaj   +1 more source

Probability prediction of true‐triaxial compressive strength of intact rocks based on the improved PSO‐RVM model

Deep Underground Science and Engineering, EarlyView.
In this work, we propose an improved particle swarm optimization (PSO) algorithm and develop an improved PSO‐relevance vector machine (RVM) model as a substitute for traditional true‐triaxial testing. The model's high prediction accuracy was validated through comparisons with two other machine learning methods and five three‐dimensional Hoek–Brown type
Qi Zhang, Maohui Wang, Ning Wang, Yixin Shen, Xuzhen He   +4 more
wiley   +1 more source

Effect of filling material on dynamic response and energy dissipation in sandstone with double weak interlayers

Results in Engineering
With the extension of China's transportation infrastructure into the complex geological areas in the west, the presence of numerous weak interlayers in the geology has posed significant challenges to the construction of tunnel transportation.
Yanzhe Li, Chuanxin Rong, Zhensen Wang, Yang Wang   +3 more
doaj   +1 more source

Mechanical property variation mechanisms of granite subjected to real‐time high temperatures and subsequent cooling treatment

Deep Underground Science and Engineering, EarlyView.
This study investigates the coupled thermo‐mechanical behavior of granite during heating and cooling through a combination of laboratory tests and finite element analysis. The thermal conductivity, mineral composition, mass loss rate, micro‐crack observation, and thermal fracture characteristics of granite under various temperature conditions are ...
Rui Pang, Dehao Meng, Thomas Frühwirt, Hao Liu, Yanan Zhao, Qingyou Zhu, Wengang Dang, Mohamed Ismael, Fei Wang   +8 more
wiley   +1 more source

A new uncertainty analysis method based on geostatistical simulation and a case study

Case Studies in Construction Materials
The stability of slopes might be influenced by numerous uncertainty factors. In this study, three uncertainty factors are considered in the slope stability analysis, which are locations of weak structural surfaces, structures of soil-rock mixtures ...
Zhen Wang, Huanling Wang, Weiya Xu, Desheng Zhu, Wei-Chau Xie   +4 more
doaj   +1 more source

Quantification of rheological parameters in deep‐sea mining plumes

Deep Underground Science and Engineering, EarlyView.
This study explores the variations in rheological properties observed during the propagation of deep‐sea mining plumes, utilizing rheological test data obtained from kaolin clay plumes. Subsequently, taking into account the differences in sediment properties, the effects of clay content and clay mineral composition on the rheological parameters of ...
Xiaolei Liu, Yihan Liu, Yonggang Jia, Xingsen Guo   +3 more
wiley   +1 more source

Bulk and shear moduli of near-surface geologic units near the San Andreas fault at Parkfield, California [PDF]

, 1993
M. Stewart, M. J. S. Johnston
openalex   +1 more source

Numerical investigation of the correlations of hydraulic and elastic characteristics in diverse carbonate rock types

Deep Underground Science and Engineering, EarlyView.
We use the linear Boolean model and the discrete Fourier transformation approach to generate various carbonate rocks. The lattice Boltzmann method and the finite element method are applied to calculate permeability and elastic wave velocity, respectively.
Yutian Zhang, Yifan Wu, Chi Zhang, Fengqiao Wang, Hucheng Deng, Meiyan Fu, Yonghui Li, Qi Li   +7 more
wiley   +1 more source

Mechanical and hydraulic behavior of a rock fracture under shear deformation

Earth, Planets and Space, 2014
With regard to crystalline rock that constitutes deep geology, attempts have been made to explore its hydraulic characteristics by focusing on the network of numerous fractures within.
S. Nishiyama, Y. Ohnishi, Hisao Itô, Takao Yano   +3 more
semanticscholar   +1 more source

Investigation of the failure characteristics of fissure tunnels under dynamic and static combinations

Deep Underground Science and Engineering, EarlyView.
This article aims to investigate the dynamic fracture response of fractured tunnel models under zero geological stress through physical experiments and numerical simulations. It further simulates the dynamic fracture characteristics of fractured tunnel models under geological stress ranging from 0 to 2.5 MPa using the numerical software AUTODYN ...
Peng Ying, Yu Ying, Xiaohan Li, Han Zhao, Kewei Yu, Zheming Zhu, Lei Zhou, Xibin Li   +7 more
wiley   +1 more source