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
Pressure relief and gas outburst prevention in ultra close coal seams a case study on overlying underlying interactions. [PDF]
Sci RepSang S, Lv J.
europepmc +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
Research on the stability analysis and safety evaluation method of the surrounding rock of the cross-fault hydraulic tunnel. [PDF]
Sci RepKong C, Yang T, Zhu K, Wang X, Xiao M.
europepmc +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
Mechanical properties of rock cutting by disc cutters and feasibility analysis of mechanical mining in Jinchuan No. 3 Mine with hard rock. [PDF]
Sci RepZhao J, Huang D, Zhu D.
europepmc +1 more source
Colorado Statewide Laborers Independent Building Agreement and Colorado Laborers District Council, Laborers International Union of North America (LIUNA), AFL-CIO (2001) [PDF]
, 2001 core +1 more source
Deep Underground Science and Engineering, EarlyView.Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei +4 more
wiley +1 more source
Evaluation the elemental, micromorphological and microhardness changes in dentin after removal of caries with sodium hypochlorite-based or enzyme-based chemomechanical caries removal agents: an in vitro study. [PDF]
BMC Oral HealthAhmed MS, Ebaya MM, Hamama HH.
europepmc +1 more source
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