Results 11 to 20 of about 114,728,006 (313)
DIC-hole drilling method for in-situ residual stress measurement [PDF]
MATEC 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 +4 more sources
Research and application of small-diameter hydraulic fracturing in situ stress measurement system [PDF]
Geoscientific Instrumentation, Methods and Data SystemsObservation and estimation of the stress state in the deep crust is a crucial challenge in in situ stress measurement work. The hydraulic fracturing method is an important borehole-based technique for absolute in situ stress measurement.
Y. Liu +5 more
doaj +2 more sources
Development and research of in-situ stress parameters database for underground coal mines of China
Meikuang 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 +2 more sources
Meikuang AnquanIn previous practice, the differential strain analysis (DSA) method, relied upon for estimating vertical principal stress to resolve geological stress, has shown limitations in reliability.
Long ZHAO +8 more
doaj +2 more sources
Changes in Lateral Stress During Slurry Trench Wall Installation. [PDF]
, 1996 PhDThe thesis is concerned with the effects of slurry trenching (diaphragm wall installation) in an overconsolidated clay, with particular emphasis on the changes in lateral stress which occur. A review of the literature on diaphragm wall installation
Page, Jonathan
core +4 more sources
International Journal of Coal Science & Technology, 2021 For non-directional drilling cores, selection of samples and the test methods for in situ stress measurements to evaluate the Kaiser effect (KE) were proposed, and the magnitude and direction of the principal stresses were derived from first principles ...
Donghui Yang +4 more
semanticscholar +1 more source
Preliminary results for the extraction and measurement of cosmogenic in situ C-14 from quartz [PDF]
, 2004 Radiocarbon is produced within minerals at the earth's surface (in situ production) by a number of spallation reactions. Its relatively short half-life of 5730 yr provides us with a unique cosmogenic nuclide tool for the measurement of rapid erosion ...
Anderson, R. +4 more
core +9 more sources
Mathematical Problems in Engineering, 2021 We established an evaluation index of the rock mass stress state for underground coal mines using the strength-stress ratio based on the measured in situ stress and the generalized Hoek–Brown strength criterion. Three in situ stress states, σcm/σ1m
Donghui Yang +5 more
semanticscholar +1 more source
Buildings, 2023 Aiming at some stress-induced failure phenomena in surrounding rock that occur during the construction of super-long and deep-buried tunnels, a method for estimating the in situ stress in the tunnels based on multivariate information integration is ...
Qitao Pei +5 more
doaj +1 more source
In-situ stress measurement and inversion analysis of a large hydropower project in southeast Tibet
Dizhi lixue xuebao, 2023 As a control and regulating project, the hydropower station in the Yigongzangbu basin of Tibet plays a vital role in meeting the electricity demand of the Tibetan power grid.
LI Zhengzheng +4 more
doaj +1 more source