Results 41 to 50 of about 114,629,556 (343)

Fracture Characteristics and its Role in Bedrock Reservoirs in the Kunbei Fault Terrace Belt of Qaidam Basin, China

Frontiers in Earth Science, 2022
Fracture characteristics at bedrock reservoirs in the Kunbei fault terrace belt in the southwest of Qaidam Basin, China, are investigated based on cores, thin sections, formation microscanner imaging, and production data.
Zhaosheng Wang, Hui Xiang, Libin Wang, Lin Xie, Zhenguo Zhang, Zhenguo Zhang, Lianfeng Gao, Zhifeng Yan, Fuling Li   +8 more
doaj   +1 more source

Influence of the Xianshuihe Fault Zone on In-Situ Stress Field of a Deep Tunnel and its Engineering Effect

Frontiers in Earth Science, 2022
The in-situ stress distribution near a fault zone is affected by factors such as tectonic movement and rock mass property deterioration, and it often shows unique characteristics and further affects the mechanical response of the rock mass and the safety
Dong-Feng Yuan, Lanbin Zhang, Xiao-Ling Liu, T. Feng, Guang-Ze Zhang, Zheng-Xuan Xu, Zhe-Wei Wang, Xi Yi, Zhi-Heng Lin, Yang Ren, Ru Zhang, L. Ren   +11 more
semanticscholar   +1 more source

Early identification on failure mode of loess landslide: insight from case study and physical model experiment

Frontiers in Earth Science
IntroductionThe Loess Plateau has long been plagued by cascading loess landslides. The rapid identification of these landslides, along with the accurate determination of their failure modes, is essential for conducting precise disaster assessments in the
Ran Li, Ran Li, Ran Li, Jiangkun He, Han Zheng, Chenyuan Zhang, Shuai Zhang, Shuai Zhang, Shuai Zhang   +8 more
doaj   +1 more source

APPLICATION OF THE KAISER EFFECT IN IN-SITU STRESS MEASUREMENT IN ROCKS - AN OVERVIEW

Rudarsko-geološko-naftni Zbornik, 2022
Knowledge of in-situ rock stress is one of the significant issues in many engineering problems. There are various methods for determining in-situ stress. Most of the common methods used for the determination of in-situ stress are time and cost consuming,
Mohammadmahdi Dinmohammadpour, Majid Nikkhah, Kamran Goshtasbi, Kaveh Ahangari   +3 more
doaj   +1 more source

Geomechanical Modeling and Inversion Analysis of the in-situ Stress Field in Deep Marine Shale Formations: A Case Study of the Longmaxi Formation, Dingshan Area, China

Frontiers in Earth Science, 2022
Based on the comprehensive analysis of wellbore characteristics in a deep shale gas field, the in-situ stress state of the shale reservoir was assessed in this study for the Longmaxi formation in the Dingshan area, Southwestern China.
Qin-Jie Liu, Q. Fu, Ke-wen Yang, Quanchao Wei, Hui-Hu Liu, Haibo Wu   +5 more
semanticscholar   +1 more source

Estimate the In-situ Earth Pressure in a Thrust Fault Zone by Vertical Cut [PDF]

, 2013
The tension crack appears at the ground surface acompanied by excavations in soils. The development of tension crack is depended upon the horizontal earth pressure exerted on the soils.
楊長義
core   +1 more source

Determination of In-Situ Stress and Geomechanical Properties from Borehole Deformation

Energies, 2018
This paper proposes a cost-effective technique to determine geomechanical properties and in-situ stress from borehole deformation data. In this approach, an artificial neural network (ANN) is applied to map the relationship among in-situ stress, borehole
Hong Xue Han, Shunde Yin
doaj   +1 more source

Prediction method and distribution characteristics of in situ stress based on borehole deformation—A case study of coal measure stratum in Shizhuang block, Qinshui Basin

Frontiers in Earth Science, 2022
A geometric equation of borehole deformation under stress was deduced based on the basic theory of elasticity. Subsequently, we established the quantitative relationship between the in situ stress and geometrical parameters of borehole deformation ...
Xinxin Fang, Hong Feng, Yunhong Wang, T. Fan   +3 more
semanticscholar   +1 more source

Determination of stress state in deep subsea formation by combination of hydraulic fracturing in situ test and core analysis: A case study in the IODP Expedition 319

, 2013
[1] In situ test of hydraulic fracturing (HF) provides the only way to observe in situ stress magnitudes directly. The maximum and minimum horizontal stresses, SHmax and Shmin, are determined from critical borehole pressures, i.e., the reopening pressure
Ito, Takatoshi, David F. Boutt, Ito, Hisao, Byrne, Timothy, Takatoshi Ito, Doan, Mai-Linh, Funato, Akio, Yasuyuki Kano, Lisa C. McNeill, Mai‐Linh Doan, Demian Saffer, McNeill, Lisa C., Saffer, Demian, Timothy Byrne, Lin, Weiren, Boutt, David F., Kano, Yasuyuki, Moe, Kyaw Thu, Kyaw Thu Moe, Akio Funato, Hisao Ito, Weiren Lin   +21 more
core   +1 more source

Stress State Change Monitoring Using Displacement Change Measurements [PDF]

, 2016
A method to back calculate stress state change was developed in Dynamic Control of Underground Mining Operations (DynaMine) research project. The purpose of this method is to provide real-time estimates of the stress state change caused by excavation. In
Uotinen, Lauri, Ritala, Frans, Siren, Topias   +2 more
core   +1 more source