Results 1 to 10 of about 77,355 (158)

A novel in situ stress measurement method based on acoustic emission Kaiser effect: a theoretical and experimental study [PDF]

open access: yesRoyal Society Open Science, 2018
Measurement of in situ stress is critical to understand the deformation and destruction of the underground space surrounding rock, and dynamic disaster of the coal mine.
Xin Bai   +4 more
doaj   +4 more sources

Investigation and enhancement of stress-dependent compliance characteristics in deep in-situ stress measurements based on anelastic strain recovery (ASR) method [PDF]

open access: yesScientific Reports
To accurately obtain the deep in-situ stress state during the construction of deep vertical shafts, laboratory-based Anelastic Strain Recovery (ASR) compliance experiments were conducted.
Tianyu Li   +4 more
doaj   +2 more sources

In Situ Stress Measurement Techniques on Li-ion Battery Electrodes: A Review

open access: yesEnergies, 2017
Li-ion batteries experience mechanical stress evolution due in part to Li intercalation into and de-intercalation out of the electrodes, ultimately resulting in performance degradation.
Ximing Cheng, Michael Pecht
doaj   +3 more sources

Investigation of crack propagation patterns on the borehole wall during single-borehole hydraulic fracturing under different in-situ stress ratios [PDF]

open access: yesScientific Reports
To study the initiation, propagation, and mechanical behaviour characteristics of fractures on the wall of a single hole during hydraulic fracturing for in-situ stress measurement, and to improve the accuracy of stress direction discrimination in ...
Tan Lei   +4 more
doaj   +2 more sources

Advance of in-situ stress measurement in China

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2011
In-situ stress is an essential parameter for design and construction of most engineering projects that involve excavation in rocks. Progress in in-situ stress measurement from the 1950s in China is briefly introduced. Stress relief by overcoring technique and hydraulic fracturing technique are the two main techniques for in-situ stress measurement in ...
Cai, Meifeng, Peng, Hua
openaire   +3 more sources

Research into using a fiber Bragg grating sensor group for three-dimensional in situ stress measurement [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems, 2022
The observation and estimation of the deep crustal stress state is a key and difficult problem for in situ stress measurement. Using a borehole wall strain gauge based on the overcoring stress-relieving method is one of the main methods of in situ stress
Y. Liu   +10 more
doaj   +1 more source

In-situ stress measurement and inversion analysis of the deep shaft project area in Sanshan Island based on hydraulic fracturing method

open access: yesDizhi lixue xuebao, 2023
The proposed 2000-meter-deep auxiliary shaft at the Xiling mine, Sanshan Island, Shandong Province, is an ultra-deep shaft construction project. Revealing the characteristics of the in-situ stress field in the shaft construction area is one of the ...
ZHU Mingde   +8 more
doaj   +1 more source

Development and research of in-situ stress parameters database for underground coal mines of China

open access: yesMeikuang Anquan, 2021
Underground 1379 in-situ stress measurement items in underground coal mines of China was collected, including 928 items of the hydraulic fracturing, 427 items of stress release, 24 items of acoustic emission.
YI Bingding
doaj   +1 more source

Application of the in-situ stress testing technology for the design of operating pressure of underground gas storage reservoir

open access: yesFrontiers in Earth Science, 2023
The appropriate design of the operating pressure of underground gas storages (UGSs) is of great significance to their safe and profitable operation. In situ stress is basic data for determining the upper limit pressure of UGSs, analyzing fault stability ...
Qun-yi Wang   +6 more
doaj   +1 more source

DIC-hole drilling method for in-situ residual stress measurement [PDF]

open access: yesMATEC Web of Conferences, 2019
Residual stress measurement carries an important significance in ensuring safety and reliability of steel structures. In order to simplify the measurement procedure and enhance flexibility of the conventional hole drilling method to adopt in in-situ ...
Peng Yang   +3 more
doaj   +1 more source

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