Results 151 to 160 of about 11,507 (301)
, 2019 The gravitational waves are space-time ripples caused by very violent phenomena, such as black holes’ collisions, supernovae’s explosions or the relic signal of the Big Bang that gave rise to the universe.
Calloni E. +9 more
core +1 more source
Deep Underground Science and Engineering, EarlyView.Our study reveals that caving‐enhanced geothermal systems (C‐EGS) with adequately fractured reservoirs achieve optimal heat extraction by minimizing preferential flow paths, while conventional fracturing (F‐EGS) and pipe‐based (P‐EGS) systems suffer accelerated thermal drawdown.
Fangchao Kang +4 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang +5 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang +5 more
wiley +1 more source
To clarify the heat and moisture regulation mechanism of deep-buried underground air tunnels and address the research gaps in the heat and moisture coupling between airflow and surrounding rock. This paper established a 560 m-deep ventilation shaft with a diameter of 5 m focused on the heat and moisture transfer of "surrounding rock - air ...
Jiangyan Ma +6 more
openaire +1 more source
Effects of mining subsidence observed by time-lapse seismic reflection profiling [PDF]
, 1995 Extracting coal from underground mineworkings causes the overlying rocks to subside with associated changes in the stress regime. The aim of the study reported here was to apply the surface seismic reflection method to study the effect of subsidence on ...
Al-Rawahy, Salim Y.S.
core
Deep Underground Science and Engineering, EarlyView.The flowchart illustrates rock specimen testing, vibration signal acquisition, and feature extraction with Gaborlet and sparse filtering for classification. Abstract Traditional lithology identification methods mainly rely on core sampling and well‐logging data.
Jian Hao +5 more
wiley +1 more source
Numerical analysis of slope stability under the effect of rainfall infiltration
矿业科学学报, 2017 Rainfall is one of the major causes for instability and failure of slopes, as a result, slope sliding and destruction are closely related to rainfall infiltration.This paper selected the eastern slope of the open pit on the west side of the Ⅶ orebody of ...
Zhang Na +3 more
doaj
, 2013 Singapore has been developing rapidly in the recent years and the issue with shortage of land has become a major problem. Now, with the advancement in technology and availability of skilled labour, the government is considering the usage of underground ...
Chew, Tyng Cheong.
core
Deep Underground Science and Engineering, EarlyView.Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang +4 more
wiley +1 more source