Results 11 to 20 of about 83,864 (261)

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

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   +1 more source

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

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 measurement method of deep borehole based on multi-array ultrasonic scanning technology

Frontiers in Earth Science, 2022
In order to improve the accuracy and efficiency of deep in-situ stress measurement, based on the wall collapse in deep borehole, a deep borehole in-situ stress measurement method based on multi-array ultrasonic scanning technology is proposed in this ...
Jinchao Wang, Chuanying Wang, Junfeng Huang, Zengqiang Han, Wenhao Zeng, Yiteng Wang   +5 more
doaj   +1 more source

Current stress field and its relationship to tectonism in a coal mining district, central China, for underground coal energy exploration

Energy Reports, 2022
Adopting 47 sets of in situ stress measurements taken at depths ranging from 417 to 1123 m in a coal mining district in central China by the overcoring method, we characterize the magnitude and orientation of the current stress field and its relationship
Peng Li, Meifeng Cai, Qifeng Guo, Fenhua Ren, Shengjun Miao   +4 more
doaj   +1 more source

Measuring forces and stresses in situ in living tissues [PDF]

Development, 2016
Development, homeostasis and regeneration of tissues result from a complex combination of genetics and mechanics, and progresses in the former have been quicker than in the latter. Measurements of in situ forces and stresses appear to be increasingly important to delineate the role of mechanics in development. We review here several emerging techniques:
Sugimura, K., Lenne, P.F, Graner, F.
openaire   +3 more sources

Neutron Stress Measurement of W/Ti Composite in Cryogenic Temperatures Using Time-of-Flight Method

Quantum Beam Science, 2023
In this study, the thermal stress alterations generated in a tungsten fiber reinforced titanium composite (W/Ti composite) were evaluated by the neutron stress measurement method at cryogenic temperatures.
Masayuki Nishida, Stefanus Harjo, Takuro Kawasaki, Takayuki Yamashita, Wu Gong   +4 more
doaj   +1 more source

Modification of the CSIRO method in the long-term monitoring of slope-induced stress

Frontiers in Earth Science, 2022
The in situ stress measurement technique can be used in long-term monitoring of induced stress to obtain three-dimensional stress states in slope engineering.
Zhihao Jin, Yuan Li, Yuan Li, Qingwen Li, Zibin Liu, Shibing Wu, Zhuo Wang   +6 more
doaj   +1 more source