The focal mechanism and field investigations of mining-induced earthquake by super-thick and weak cementation overburden strata fracturing by Xianxi Bai, Anye Cao, Changbin Wang, Yaoqi Liu, Chengchun Xue, Xu Yang, Yao Yang, Songwei Wang, Qi Hao

“…To explain and quantify the focal mechanism and roof fracture characteristics of MIE under the STWCS, the surface subsidence, ground borehole televiewer imaging and microseismic monitoring technologies were used to observe the fracturing of STWCS. …”
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Large-Scale Experimental Validation of Real-Time Monitoring in Underground Gas Storage Wells Using Distributed Fiber Optic Sensing by Linqing Luo, Diana Abdulhameed, Gang Tao, Tianchen Xu, Jiangnan Wang, David Xu, Kenichi Soga, Yuxin Wu

“…The results showed that the DFOS system could identify thermal events from gas injection and withdrawal operations, and leaks at tubing in old boreholes. It also successfully detected gas leaks through the cement behind the casing for newly constructed borehole, with a minimum leak rate of 1.5 LPM (Liter Per Minute). …”
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Prediction of water inflow after excavation of underground chamber group with long span and high buried depth by Rui LI, Hongfu ZHOU, Shuwu LI, Guanghong JU, Wanlin LIU, Wenqing TANG

“…To predict the water inflow of underground caverns after excavation and provide guidance for drainage and anti-seepage design, this study focused on the large underground powerhouse caverns of a pumped storage power station in Xinjiang, and analyzed the seepage characteristics of rock mass in the dam site area in terms of groundwater activity characteristics, borehole water pressure test, and the development of structural planes in the rock mass. …”
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REVIEW OF IDENTIFIED SHORTCOMINGS IN AQUIFER VULNERABILITY ASSESSMENTS by Anthony Okeh, Abu Mallam, Osagie Abel Uyimwen, S. A. Ganiyu

“…The study suggested basaltic intrusion as probable cause of borehole failures in the area. A different research which incorporated VES and data from the hill-shaded Shuttle Radar Topography Mission (SRTM), suggested insufficient interconnectivity within the fractures as conditions controlling groundwater occurrence in the area. …”
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Distribution and Variation of Mining-Induced Stress in the Reverse Fault-Affected Coal Body by Rui Zhou, Yujin Qin, Zhizhen Zhang

“…Finally, intrinsically safe GZY25 borehole stress sensors were used to monitor the coal body stresses in the reverse fault area under the influence of mining in Xinchun Coal Mine and ZuoQiuka Coal Mine. …”
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Permeability Characteristics of Combined Coal with Different Water Contents by Hongyu Pan, Yao Zhang, Lei Zhang, Yan Cao, Yuhang Chu, Shihua Yang

“…These findings confirm that water content has the most significant impact on permeability, demonstrating that gas flow primarily follows the principle of distance priority toward the nearest borehole. Boreholes closer to the source exhibit higher extraction volumes. …”
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A New Method for Research on Unsteady Pressure Dynamics and Productivity of Ultralow-Permeability Reservoirs by Kun Wang, Li Li, Xiao Chen, Wei Liang, Yong Yang, Zhenghe Yan, Jianwen Dai, Wei Li, Yahui Wang, Weifang Wang, Min Li, Danling Wang

“…Then, the double logarithmic chart of dimensionless borehole wall pressure and pressure derivative changing with dimensionless time is drawn. …”
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Calculation Method of Overburden Damage Height Based on Fracture Mechanics Analysis of Soft and Hard Rock Layers by Liang Chen, Shaowu Fan, Can Zhao, Lang Zhang, Zhiheng Cheng

“…Under the geological condition of soft and hard rock interaction stratum, the overburden damage height can provide a quantitative support for the design of the locations of gas drainage boreholes in the roof mining fracture zone and the determination of the hydraulic fracture zone in coal seam mining. …”
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Formation of the Figge Maar Seafloor Crater During the 1964 B1 Blowout in the German North Sea by Jens Karstens, Jens Schneider von Deimling, Christian Berndt, Christoph Böttner, Michel Kühn, Benedict T. I. Reinardy, Axel Ehrhardt, Jonas Gros, Bettina Schramm, Dirk Klaeschen, Judith Elger, Matthias Haeckel, Mark Schmidt, Sven Heinrich, Philipp Müller, Frithjof Bense

“…Reflection seismic data support a scenario in which overpressured gas ascended first through the lower part of the borehole and then migrated along steeply inclined strata and faults towards the seafloor. …”
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CO2 geological storage in sedimentary basins: An update on the potential and suitability evaluation and a field test by Yujie Diao, Xin Ma, Chenglong Zhang, Xiaolin Jin, Xufeng Li, Chao Zhang

“…However, it has been inferred that borehole ZK10 at the observation field has become a leakage pathway due to the drilling activities, inadequate well-plugging, and abandonment procedures without considering CO2 corrosion.…”
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Optimization of Key Parameters for Coal Seam L-CO₂ Phase Transition Blasting Based on Response Surface Methodology by Xuanping Gong, Xiaoyu Cheng, Cheng Cheng, Quangui Li, Jizhao Xu, Yu Wang

“…L-CO₂ blasting creates a plastic deformation zone and a pulverized zone around the borehole within 500 μs to 800 μs after detonation, with a tensile fracture zone appearing at 2000 μs. …”
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Estimation and evaluation of iron reserves in the eastern area of Eileh1 mine, Razavi Khorasan province by Hamid Esmati Daroneh, Maryam Gholamzadeh

“…Among all drilled boreholes, the maximum depth is 96 meters, attributed to reverse circulation (RC) boreholes No. …”
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Time Zero for Net Zero: A Coal Mine Baseline for Decarbonising Heat by Alison A. Monaghan, Luke Bateson, Adrian J. Boyce, Neil M. Burnside, Rebecca Chambers, Julia R. de Rezende, Eilidh Dunnet, Paul A. Everett, Stuart M. V. Gilfillan, Muhammad S. Jibrin, Gareth Johnson, Richard Luckett, Donald John MacAllister, Alan M. MacDonald, John W. Moreau, Laura Newsome, Alessandro Novellino, Barbara Palumbo-Roe, Ryan Pereira, Douglas Smith, Mike J. Spence, Vanessa Starcher, Helen Taylor-Curran, Christopher H. Vane, Thomas Wagner, David B. Walls

“…In addition, over 550 water, rock and gas samples collected during borehole drilling and testing underwent diverse geochemical, isotopic and microbiological analysis. …”
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Analytical Optimization of Vertical Closed-Loop Ground Source Heat Pump Systems by Konstantinos L. Katsifarakis, Yiannis N. Kontos

“…In this paper, we study the optimization of the operation of closed-loop ground source heat pump systems with any layout and any number n of vertical boreholes. Given the total required heat load, <i>q_T</i>, the goal is to maximize the rate of thermal gains from the ground or, equivalently, to minimize the disturbance of the ground temperature at the location of the boreholes. …”
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Research on Drilling and Sealing Technology for Cross Bedding of Superthick Coal Seam by Yao-bin Li, Cai-Hao Yue, Xin Guo

“…Through the simulation and comparison of gas pressure at different extraction time and the gas pressure changes when the spacing of boreholes is 8 m, 10 m, and 12 m, the results show that, under the designed parameters, when the pressure value at the middle of the two boreholes starts to be less than 0.74 Mpa, the standard extraction time of the upper and lower cross strata boreholes is 160 days, and the most suitable spacing of boreholes is 10 m. …”
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Groundwater quality and associated health risks in the Eastern Region of Ghana by Thomas Acquah, Miriam Appiah-Brempong, Geophrey Kwame Anornu

“…In the Eastern Region of Ghana, 95 % of residents have access to boreholes. However, approximately 30 % of these boreholes are characterized by unpleasurable taste, odour, oily scum and particulate matter. …”
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Energy Accumulation and Dissipation of Coal with Preopening under Uniaxial Loading by Xin Wei, Hao Hu, Yang Li

“…At the same time, the arrangement of the artificial boreholes for preventing the rockburst was explored. …”
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Study on Gas Control Methods Optimization for Mining Safety by Liwen He, Yingcheng Dai, Sheng Xue, Chunshan Zheng, Baiqing Han, Xin Guo

“…Four gas drainage measures were determined for gas control, including cross-measure boreholes into overlying coal seams, surface goaf wells, roof boreholes, and roof gas drainage roadway. …”
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Geotechnical Investigation of the Slope Instability in the Gündoğan Village Settlement Area (Ardeşen-Rize) by Ayberk Kaya, Cem Demirbaş, Serhat Dağ

“…For this purpose, along the three survey lines; six boreholes with a total of 150 meters in length were drilled, geophysical studies were performed along the three lines and inclinometer measurements were taken in two boreholes. …”
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Strata Movement and Fracture Propagation Characteristics due to Sequential Extraction of Multiseam Longwall Panels by Xiangyang Zhang, Behrooz Ghabraie, Gang Ren, Min Tu

“…These fractures increase the risk of water inrush in presence of underground/surface water and create highly permeable areas suitable for placing gas drainage boreholes.…”
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