Results 11 to 20 of about 114,713,249 (284)

Research and application of small-diameter hydraulic fracturing in situ stress measurement system [PDF]

Geoscientific Instrumentation, Methods and Data Systems
Observation 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, Y. Liu, M. Zhang, Y. Li, H. Chen, H. Chen   +5 more
doaj   +2 more sources

In-situ stress measurement based on Kaiser effect and differential strain analysis method and regional in-situ stress distribution research

Meikuang Anquan
In 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, Wei QIAO, Xianggang CHENG, Hu HE, Xiangsheng MENG, Yusheng ZHANG, Wenjie SUN, Yangyang REN, Chong XIAO   +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

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., Naysmith, P., Cook, G.T., Lifton, N.A., Phillips, W.M.   +4 more
core   +9 more sources

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, YANG Wenchao, ZHANG Peng, LI Changhu, FAN Yulu   +4 more
doaj   +1 more source

Research on stress state in deep shale reservoirs based on in-situ stress measurement and rheological model

Dizhi lixue xuebao, 2022
Accurately determining the stress state in deep shale reservoirs is the key to the efficient development of shale gas and other unconventional energy sources.
MENG Wen, TIAN Tao, SUN Dongsheng, YANG Yuehui, LI Ran, CHEN Qunce   +5 more
doaj   +1 more source

Considerations on the application of in-situ stress measurement and real-time monitoring in deep underground engineering in strong tectonic activity region

Dizhi lixue xuebao, 2023
The concentration, complexity, and significant anisotropy of in-situ stress make it a pressing and challenging issue in engineering geology safety in strong tectonic activity areas.
TAN Chengxuan, ZHANG Peng, WANG Jiming, FENG Chengjun, QI Bangshen, WANG Huiqing, LI Bin, CHEN Qunce, WU Manlu, SUN Weifeng, QIN Xianghui, ZHANG Chongyuan   +11 more
doaj   +1 more source

In-situ stress characteristics and rockburst tendency of surrounding rocks in the Shuiwangzhuang gold deposit, Zhaoyuan, Shandong province

Dizhi lixue xuebao, 2023
We carried out hydraulic fracturing in-situ stress measurements in an 1881-m deep borehole at the Shuiwangzhuang gold deposit and obtained the variation law of deep in-situ stress with depth in the mining area.
LIU Luyong, LI Kaizhou, WANG Nengwei, YANG Zhijie, YANG Dongming, SUN Yao   +5 more
doaj   +1 more source

Holographic in situ stress measurements [PDF]

Geophysical Journal International, 1986
A new instrument for measuring the in situ level of stress in boreholes has been developed. The instrument operates on the principle of locally relieving the stresses acting on a rock mass by drilling a small hole into the borehole surface and recording the resultant displacement field by holographic interferometry.
Bass, Jay D., Schmitt, Douglas, Ahrens, Thomas J.   +2 more
openaire   +2 more sources

Geological Core Ground Reorientation Technology Application on In Situ Stress Measurement of an Over-Kilometer-Deep Shaft

Advances in Civil Engineering, 2020
As mining progresses to depth, engineering activities face the extreme challenge of high in situ stress. To efficiently measure the deep in situ stress before engineering excavation, an innovative deep in situ stress measurement method capable of the ...
Chunde Ma, Xibing Li, Jiangzhan Chen, Yanan Zhou, Sen Gao   +4 more
doaj   +1 more source