Results 11 to 20 of about 96,336 (267)
The Influence of Radial Stress on Mechanical Properties of Anchorage Structure
The research on the influence of radial stress on the mechanical properties of an anchorage structure has important theoretical and practical significance for optimizing the design of anchorage structures and saving support cost.
Yubao Zhan +3 more
doaj +1 more source
Using the self-developed three-axis servo fluid-solid coupling system with gas-solid coupling of gas-bearing coal, the variation law of the permeability of gas coal under the stress cycle loading and unloading path was studied.
Fakai Wang +4 more
doaj +1 more source
By constructing the permeability model to distinguish the fracture zone, plastic zone, and elastic zone around the hydraulic fracturing borehole, we study the influence of some important parameters on the stress distribution around the borehole and the ...
Xiaomin Wu +5 more
doaj +1 more source
Radial drilling-fracturing, the combination of the hydraulic fracturing and radial borehole, is a technology that can guide the hydraulic fractures to directionally propagate and efficiently develop low permeability reservoir.
Yuxin Chen +5 more
doaj +1 more source
Study on deformation and permeability properties of raw coal during alternate loading and unloading
The deformation and permeability experiments of raw coal in the process of alternating loading and unloading under variable axial pressure loading rate are carried out by using the thermal fluid structure coupling servo experimental system, and the ...
YANG Yushun +3 more
doaj +1 more source
Integrity Analysis of Cement Sheath in Annulus B of Vertical Section during Hydraulic Fracturing
In the process of shale gas development in China,the phenomenon of sustained casing pressure(SCP)is widespread,which seriously affects the wellhead safety and life cycle of shale gas wells.Taking a shale gas well as an example,combined with the rock ...
Zeng Bo +4 more
doaj
Study on the Variation Mechanism of Skin-friction Force on Surface Conductor in Offshore Drilling
Skin-friction force plays a vital role in the bearing capacity of surface conductor and wellhead stability in offshore drilling, but the variation mechanism of skin-friction force during and after the jetting of surface conductor is not clear. Therefore,
Hu Nanding +6 more
doaj
Considering the heterogeneous and viscoelastic characteristics of the soil around the tunnel, the dynamic characteristics of circular tunnel lining in fractional derivative viscoelastic radially inhomogeneous soil are studied.
Zongling Zhang +3 more
doaj +1 more source
Influences of Different Die Bearing Geometries on the Wire-Drawing Process
Metalworking is an essential process for the manufacture of machinery and equipment components. The design of the die geometry is an essential aspect of metalworking, and directly affects the resultant product’s quality and cost.
Gustavo Aristides Santana Martinez +4 more
doaj +1 more source
Relativistic static thin discs with radial stress support [PDF]
19 pages, LaTeX, 7 figures, submitted to Class.
González, Guillermo A. +1 more
openaire +3 more sources

