Research on Mining-Induced Stress Distribution of Extrathick Coal Seams Based on Electromagnetic Wave CT Technology by Tuan He, Guodong Li, Feng Luo, Xueqing Li

“…To verify the model, electromagnetic wave CT detection and borehole endoscopy are used to test the coal’s electromagnetic wave attenuation and internal joints. …”
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Experimental Investigation of Water-Inrush Risk Based on Permeability Evolution in Coal Mine and Backfill Prevention Discussion by Meng Li, Jixiong Zhang, Weiqing Zhang, Ailing Li, Wei Yin

“…Therefore, it is essential to investigate the permeability evolution of rocks under load. Borehole sampling was conducted in a bedrock layer beneath an aquifer, and the permeability evolution of sandstone specimens under different confining pressures was tested in rock mechanics testing laboratories. …”
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Presplit Blasting Technique in Treating Hard Overlying Strata: From Numerical Simulation to Field Practice by Baisheng Zhang, Zhiping Yang, Xuming Yang, Shuai Zhang

“…., unsaturation coefficient, borehole spacing, and the slit width) were consequently determined via the numerical simulation with the application of LS-DYNA. …”
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Thermal Performance Analyses of Multiborehole Ground Heat Exchangers by Wanjing Luo, Changfu Tang, Yin Feng, Pu Miao

“…However, as indicated by further investigations, this malfunction can be avoided by increasing borehole spacing.…”
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Application of Treatment for Deep Hole Drilling Debris in Gas-Rich Soft Coal Seams by Yihui Niu, Zuoming Xu, Wenhe Wang, Xiaofei Jing, Hongfu Mi, Zhen Zhong

“…Hole accidents occurring in the drilling process and borehole collapse encountered in gas production are obstacles standing in the way of high efficiency of gas drainage through the outburst-prone soft coal seams in China. …”
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Monitoring Nitrogen Leaching for the Evaluation of the Dutch Minerals Policy for Agriculture in Clay Regions by Dico Fraters, Leo J.M. Boumans, Ton C. van Leeuwen, Wim D. de Hoop

“…The average NO3–-N concentration in tile drainwater was 18.8 and 3.2 mg/l in borehole water on farms where both were monitored. …”
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Estimation of Aperture and Stiffness of Fractures under High Water Pressure Using Hydrological Data and Slurry Consolidating Body by Jianbo Li, Yanchun Xu

“…First, an ideal flow model composed of a borehole and a fracture is established with the fracture aperture as the main variable. …”
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The Horizontal Bearing Capacity of Composite Concrete-Filled Steel Tube Piles by Yunxiu Dong, Zhongju Feng, Haibo Hu, Jingbin He, Qilang Zhang, Fuchun Wang

“…Steel casings (SCs) are extensively and increasingly used to stabilize the borehole wall in the construction of bridge pile foundations. …”
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Microzonation Study Based on Ground Amplification for Erzincan City by Mehmet Özyazıcıoğlu, Kemal Dönmezçelik, Süleyman N. Orhan, M. Yener Özkan

“…In this research, soil amplification analyses based on equivalent linear one dimensional shear wave theory have been made for the province of Erzincan. For this purpose, borehole (max depth 275 m) data pertaining to DSI (State Water Works) drilled between 1960 and 1980 for ground water exploration are used. …”
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Geological Structure Exploration of Karst Collapse Column and Evaluation of Water Insulation Properties of the Mud Part by Shijian Yu, Jiyang Liu, Peng Bai, Hongtao Xu, Runshan He, Yongshen Wang, Dawei Yin

“…In this study, the X5 KCC in Shiquan Coal Mine was investigated by means of controlled source audio magnetotelluric exploration and borehole television. In this way, the subsection geological structure of the KCC was obtained. …”
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A Proper Use of the Adjacent Land‐Based Observatory Magnetic Field Data to Account for the Geomagnetic Disturbances During Offshore Directional Drilling by Mikhail Kruglyakov, Alexey Kuvshinov, Manoj Nair

“…These measurements are the superposition of the signals from the internal, core and crustal, and external, ionospheric and magnetospheric sources and the noise from magnetic elements in the borehole assembly. The internal signals are mostly constant in time and accounted for through the Earth's internal field models. …”
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Hydrothermal Dissolution of Deeply Buried Cambrian Dolomite Rocks and Porosity Generation: Integrated with Geological Studies and Reactive Transport Modeling in the Tarim Basin, Ch... by Wenwen Wei, Daizhao Chen, Hairuo Qing, Yixiong Qian

“…Integrated with geological studies and reactive transport modeling, this study investigated the Cambrian dolomites that were buried at depths up to 8408 m and still preserved a large amount of unfilled dissolution vugs from the borehole TS1 in the northern Tarim Basin. Studies indicate that these vugs were formed in association with fault-channeled hydrothermal fluids from greater depth through “retrograde dissolution” as the fluid temperature dropped during upward migration. …”
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Dimension Analysis-Based Model for Prediction of Shale Compressive Strength by Xiangyu Fan, Fenglin Xu, Lin Chen, Qiao Chen, Zhiwei Liu, Guanghua Yao, Wen Nie

“…The compressive strength of shale is a comprehensive index for evaluating the shale strength, which is linked to shale well borehole stability. Based on correlation analysis between factors (confining stress, height/diameter ratio, bedding angle, and porosity) and shale compressive strength (Longmaxi Shale in Sichuan Basin, China), we develop a dimension analysis-based model for prediction of shale compressive strength. …”
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Genesis Analysis of High-Gamma Ray Sandstone Reservoir and Its Log Evaluation Techniques: A Case Study from the Junggar Basin, Northwest China by Liang Wang, Zhiqiang Mao, Zhongchun Sun, Xingping Luo, Yong Song, Zhen Liu

“…Affected by formation’s high water sensitivity and poor borehole quality, the conventional logs can not recognize reservoir and evaluate the physical property of reservoirs. …”
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GEOPHYSICAL INVESTIGATION OF GROUNDWATER POTENTIALS USING RESISTIVITY METHOD: A CASE STUDY OF ABU PHASE II STUDENTS’ HOSTEL by FRANCIS JAMES OGBOZIGE, SADIQ MUHAMMAD SANI

“…However, four VES points (two in each hostel) were identified to be suitable for borehole drilling though, three out of these four VES points have single aquifer in each with resistivity and thickness ranging from 34.4 Ωm – 40.57 Ωm and 2.02 m – 7.49 m respectively. …”
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Numerical Analyses on Deformation and Failure Characteristics of Surrounding Rock of Gob-Side Entry Retention by Roof Cutting by Qunying Wu, Binhui Liu, Jun Yang, Yajun Wang, Kuikui Chen, Yu Cheng

“…The results of the simulation are in good agreement with the result of drilling peeking (drilling observation by borehole televiewer) and field condition (observation and measurement in the field). …”
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Influence of Decoupled Charge Structure and Filler on the Blasting Effect by Yiping Zhang, Yi Luo, Sipeng Wan, Yingxiang Tian, Huanchao Ding, Xiaoxiao Zhang, Chengcheng Fang, Yuyao Zhang

“…A physical model of a concrete single-borehole decoupled charge structure was designed to study the geometric elements of the blasting funnel, flyrock launch velocity, peak strain values, and distribution of the gravel lumpiness. …”
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Dynamic Heat Transfer Modeling and Validation of Super-Long Flexible Thermosyphons for Shallow Geothermal Applications by Jianhua Liu, Yanghuiqin Ding, Hao Liu, Liying Zheng, Xiaoyuan Wang, Yuezhao Zhu

“…In comparison to borehole heat exchangers that rely on forced convection, super-long thermosyphons offer a more efficient approach to extracting shallow geothermal energy. …”
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ASSESSMENT OF THE ROLE OF PRIVATE PROPERTY DEVELOPERS IN THE PROVISION OF INFRASTRUCTURES IN KARU, KEFFI AND NASARAWA IN NASARAWA STATE, NIGERIA by A.J Yacim, A.V Bello

“…The result also show that well and borehole ranked high among the alternative infrastructures provided by private developers in Karu, Keffi and Nasarawa respectively while very few of them provided generator sets and private security guard in their premises. …”
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Experimental and Numerical Investigation on Basic Law of Dense Linear Multihole Directional Hydraulic Fracturing by Xin Zhang, Yuqi Zhang

“…The results show the following: (1) Using the dense linear holes to control directional hydraulic fracturing can effectively form directional hydraulic fractures extending along the borehole line. (2) The hydraulic fracturing simulation program is very suitable for studying the basic law of directional hydraulic fracturing. (3) The reason why the hydraulic fracture can be controlled and oriented is that firstly, due to the mutual compression between the dense holes, the maximum effective tangential tensile stress appears on the connecting line of the drilling hole, where the hydraulic fracture is easy to be initiated. …”
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