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Investigation of the Models of Flow through Fractured Rock Masses Based on Borehole Data
Published 2020-01-01“…When only limited borehole data are available, making optimum use of the existing data is crucial for performing a preliminary assessment of the investigated site. …”
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22
Study on Pressure Relief Effect and Rock Failure Characteristics with Different Borehole Diameters
Published 2021-01-01“…The research result shows that with the increase in borehole diameter, the effect of borehole pressure relief is better. …”
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23
A Method for Borehole Image Reverse Positioning and Restoration Based on Grayscale Characteristics
Published 2024-12-01Subjects: “…borehole image…”
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24
Prediction Model for Spontaneous Combustion of Coal around Boreholes Using Bedding Gas Drainage
Published 2021-01-01“…When the drainage negative pressure is less than 45 kPa, the coal around the borehole is more likely to undergo spontaneous combustion with increasing pressure, and the sealing hole length has a positive linear correlation with the time of spontaneous combustion of the coal around the borehole. …”
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25
Study on the Influence of Borehole Water Content on Bolt Anchoring Force in Soft Surrounding Rock
Published 2022-01-01“…When the borehole water content is less than 15 mL, the influence of borehole water content on anchoring force is weak for a given borehole length. …”
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26
Porothermoelastic Response of a Borehole in Fluid-Saturated Medium Subjected to Thermal Osmosis Effect
Published 2023-01-01“…The wellbore problem is decomposed into axisymmetric and deviatoric loading cases considering the borehole subjected to a nonhydrostatic stress field. …”
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27
Enhancement of Cross-Borehole Pulse Radar Signature on a Partially Water-Filled Tunnel
Published 2014-01-01“…Cross-borehole pulse radar has been employed to detect a deeply located empty tunnel. …”
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28
Measurements and Design Calculations for a Deep Coaxial Borehole Heat Exchanger in Aachen, Germany
Published 2013-01-01“…The drilled rocks of the 2500 m deep borehole have extremely low permeabilities and porosities less than 1%. …”
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29
Propagation pattern of cracks around a shale borehole via the cohesive element method
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30
Study on Key Parameters of Directional Long Borehole Layout in High-Gas Working Face
Published 2021-01-01“…This research aims to obtain a new way based on the directional long borehole layout to investigate the gas migration behavior of coal bed methane. …”
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31
Coring is not boring! – What should, could and has been be done to celebrate the borehole core.
Published 2022-06-01Subjects: “…borehole…”
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32
Experimental Research on Performance of New Gas Drainage Borehole Sealing Material with High Fluidity
Published 2021-01-01“…To ensure the sealing effect of gas extraction borehole in underground coal mine and improve the concentration of gas extraction, a kind of high-flow sealing material which can be injected into the microcracks around borehole was developed. …”
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33
Destruction Law of Borehole Surrounding Rock of Granite under Thermo-Hydro-Mechanical Coupling
Published 2020-01-01“…The destruction of the rock that surrounds boreholes under thermo-hydro-mechanical coupling is an important factor for borehole stability in hot dry rock (HDR) geothermal energy extraction. …”
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34
Research on Optimization of Coal Pressure Relief Borehole Parameters under High-Stress Conditions
Published 2021-01-01“…Determining the parameters of boreholes drilled for relieving pressure in coal seams is the key preventing and controlling rock bursts in boreholes of large diameter. …”
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35
Three-Dimensional Inversion of Borehole-Surface Resistivity Method Based on the Unstructured Finite Element
Published 2021-01-01“…In this paper, the three-dimensional borehole-surface resistivity method is explored based on the principle of geometric sounding, and the three-dimensional inversion algorithm of the borehole-surface resistivity method in arbitrary surface topography is proposed. …”
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36
Influence of Deformation and Instability of Borehole on Gas Extraction in Deep Mining Soft Coal Seam
Published 2021-01-01“…The results of the study show the following. (1) When there is no borehole deformation (i.e., complete borehole), the suction pressure loss of drainage system in the borehole is very small, whose effect on gas drainage can be neglected. (2) In case of borehole collapse, the suction pressure loss is big at the collapse segment, and the total suction pressure loss of the drainage system in the borehole is bigger than that in the complete hole. …”
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37
Numerical simulation analysis of effect of borehole gas extraction under fluid‐structure interaction
Published 2024-11-01“…For Φ98 mm borehole and Φ120 mm borehole, hydraulic treatment can increase the efficiency of gas extraction by 31.3% and 22.7%, respectively. …”
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38
A Computing Method for Sand Inrush Quantity through a Borehole in Longde Coal Mine
Published 2018-01-01“…A quicksand disaster through a borehole occurred in Longde coal mine. A lot of aeolian sand, the volume of which is between 310,000 m3 and 380,000 m3, has submerged into the underground space in about 70.5 h. …”
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39
Assessment of Stakeholder Involvement and Borehole Water Projects Delivery in Kogi West Senatorial District, Nigeria
Published 2023-06-01Subjects: Get full text
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40
2D Model Study of CO2 Plumes in Saline Reservoirs by Borehole Resistivity Tomography
Published 2011-01-01“…The performance of electrical resistivity tomography (ERT) in boreholes is studied numerically regarding changes induced by CO2 sequestration in deep saline reservoirs. …”
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