A Vibration-Isolating Blast Technique with Shock-Reflection Device for Dam Foundation Excavation in Complicated Geological Conditions by Haoran Hu, Wenbo Lu, Peng Yan, Ming Chen, Qidong Gao

“…In addition, the vibration at the bottom of the borehole is also demonstrated by numerical simulation, with results similar to the field experiments. …”
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Geoelectric Evaluation of Groundwater Potential: A Case Study of Sabongida-Ora and Environs, Southern Nigeria by FI Chinyem

“…It is therefore paramount to carry out a thorough geophysical investigation in any locality prior to sinking a borehole in order to forestall loses and to have productive wells. …”
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Study of SCA-Induced Rock Crack Propagation under Different Stress Conditions Using a Modified Cohesive Element Method by Shen Wang, Hani Mitri, Huamin Li, Dongyin Li, Wen Wang

“…Results indicate that (1) the modified cohesive element method used in this study is feasible to model crack propagation in deep rocks; (2) the maximum expansion pressure of SCAs depends on rock elastic modulus and geostress field and should be measured under a condition similar to deep underground prior to SCA borehole spacing design; when using the SCAs with a maximum expansion pressure of 100 MPa in 600 m underground, the suggested borehole spacing is less than 220 mm; and (3) σ3 dominates the crack initiation pressure while the principal stress ratio σ3/σ1 and notch direction control the direction of crack propagation.…”
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ALTERNATIVE PARADIGM TO COMMUNITY DEVELOPMENT: THE INFLUENCE OF COMMUNITY BASED ORGANISATION ON COMMUNITY DEVELOPMENT IN OYO STATE, NIGERIA by Lawal Ayofe BAKARE, Victoria Olubukola OGUNYEMI

“…It was equally revealed that the people expressed high satisfaction with CBOs projects in the following areas; provision of electric poles, provision of transformer(s), provision of borehole/pipe-borne water or community well, construction of town hall and construction of drainage facility. …”
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Permeability Enhancement Technology for Soft and Low-Permeability Coal Seams Combined with Hydraulic Perforation and Hydraulic Fracturing by Zhengjie Shang, Zhaofeng Wang, Zhiheng Cheng, Hongbing Wang, Liang Chen, Lei Li, Jianhua Fu, Hao Liu

“…Numerical simulations were developed to study the influence of the technique on the stress distribution and permeability of the coal around the borehole. In addition, the extracted borehole gas concentrations and extraction amounts at multiple sites were investigated before and after using the technique. …”
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Geoelectric Evaluation of Groundwater Potential: A Case Study of Sabongida-Ora and Environs, Southern Nigeria by FI Chinyem

“…It is therefore paramount to carry out a thorough geophysical investigation in any locality prior to sinking a borehole in order to forestall loses and to have productive wells. …”
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Research on the Settlement Regulation and Stability of Large Building Foundation over Gobs: A Case Study in the Xiangcheng Coal Mine, China by Wenyan Guo, Bingnan Hu, Junying Zhang, Qingtong Chen, Xinguo Jia, Jianghua Li

“…According to the analysis of the borehole exploration data, borehole TV observations, and theoretical calculations, there were broken bedrock and developmental fractures in the fracture and caved zones above the gob areas. …”
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Research and Application of Hydraulic Punching Pressure Relief Antireflection Mechanism in Deep “Three-Soft” Outburst Coal Seam by Beifang Gu, Yanling Wu

“…This outcome means that the effective half radius is 5.5 m, and the borehole spacing is 7.7 m. These values are the construction parameters for large-scale applications. …”
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Study on the Interaction between Low-Viscosity High-Permeability Pregrouting Sealing Material and Coal and Its Application by Yujia Chen, Ao Li, Dingding Yang, Tianyu Liu, Xiaowei Li, Jun Tang, Chenglin Jiang

“…The field application indicates that after pregrouting treatment of boreholes in the coal seam with the new material, the borehole formation rate reaches 100%. …”
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Ecology of endolithic bryozoans: colony development, growth rates and interactions of species in the genus Immergentia by Mildred J. Johnson, Sarah Lemer, Masato Hirose, Sebastian H. Decker, Thomas Schwaha

“…Abstract Boring bryozoans dissolve calcium carbonate substrates, leaving unique borehole traces. Depending on the shell type, borehole apertures and colony morphology can be diagnostic for distinguishing taxa, but to discriminate among species their combination with zooidal morphology is essential. …”
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CALCULATION OF TECHNOLOGICAL PARAMETERS OF OUT-PIPE REAGENT CIRCULAR IRRIGATION OF GRAVEL-PACKED FILTERS OF WATER SUPPLY WELLS by V. V. Ivashechkin, V. V. Veremenyuk, P. A. Avtushko

“…This article deals with radical movement of chemical solutions by injection of it outside of gravel pack of filter when the flow directs to borehole axis under conditions of quasi-steady-state mode of filtration for equal yield of input and output reagent from borehole.Colmataged layer of gravel pack is schematized in the form of porous ring cylinder with outside radius which is equal to radius of line of gravel pack and the height which is equal to the length of filter made in formation drilling and inside radius which is equal to radius of filter. …”
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A New Width Measurement Method of the Stress Relief Zone on Roadway Surrounding Rocks by Pengfei Cui, Banghua Yao, Yong Liu, Jianping Wei, Zhihui Wen, Hui Li

“…Determining the width of the stress relief zone on roadway surrounding rocks is the premise to optimize drilling borehole effect and increase gas extraction efficiency. …”
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The Principle and Downhole Testing of Water Injection Exploration in Depleted Reservoirs by Jinpeng Xu, Hui Zhao, Bing Dong, Yi Li, Chuang Wang

“…The exploration of depleted areas, especially old tunnels, presents significant challenges, and achieving the required borehole density for exploration in depleted areas is difficult in reality. …”
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The Influence of Coupled Thermomechanical Processes on the Pressure and Temperature due to Cold Water Injection into Multiple Fracture Zones in Deep Rock Formation by Bruno Figueiredo, Chin-Fu Tsang, Auli Niemi

“…A technique to produce geothermal energy from deep rock formations at elevated temperatures consists of drilling two parallel deep boreholes, the second of which is directed so as to intersect a series of fractures produced by hydraulic fracturing in the first borehole. …”
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Study on the Influence of Sand Core Compactness on Surface Entropy considering Engineering Disturbance by Ding-li Su, Hang Chen, Xuemiao Xu, Mengxiong Tang, He-song Hu

“…There is a close relationship between grain texture and compactness. (2) The calculation results of sand image entropy of one-dimensional entropy and two-dimensional entropy showed that the entropy value of loose, slightly dense, and medium dense sand images is positively correlated with the compactness of sand. (3) The maximum variance of two-dimensional entropy of loose, slightly dense, and medium dense sand image in the same borehole is less than 0.09, and the data variance amplification effect of two-dimensional entropy of image is mainly between different boreholes. (4) The dense feature of core sample structure forms an ordered structure with a gray change boundary, which increases the roughness of the image and leads to the increase of entropy. …”
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The Law of Fracture Evolution of Overlying Strata and Gas Emission in Goaf under the Influence of Mining by Cheng Cheng, Xiaoyu Cheng, Rui Yu, Wenping Yue, Chao Liu

“…Construction parameters of the high directional long borehole were designed through simulation results. …”
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Formation Mechanism and the Height of the Water-Conducting Fractured Zone Induced by Middle Deep Coal Seam Mining in a Sandy Region: A Case Study from the Xiaobaodang Coal Mine by Xiaoshen Xie, Enke Hou, Shuangming Wang, Xueyang Sun, Pengfei Hou, Shibin Wang, Yongli Xie, Yongan Huang

“…Filed measurements including fluid leakage, borehole TV, and similar simulation were adopted to analyze the regularity of the WCFZ in this area. …”
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Sealing Performance of New Solidified Materials: Mechanical Properties and Stress Sensitivity Characterization of Pores by Chao Zhang, Gaohan Jin, Chao Liu, Shugang Li, Junhua Xue, Renhui Cheng, Hua Liu

“…Borehole-sealing solidified material plays a significant role in improving sealing quality and enhancing gas drainage performance. …”
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Safety of Drinking Water from Primary Water Sources and Implications for the General Public in Uganda by Keneth Iceland, Kasozi, Sarah, Namubiru, Roland, Kamugisha, Ejike, Daniel Eze, Fred, Ssempijja, Alfred, Omachonu Okpanachi, Hellen, Wambui Kinyi, Jovile Kasande, Atusiimirwe, Dickson Stuart, Tayebwa, Joy, Suubo, Edgar Mario, Fernandez, Nathan, Nshakira, Andrew, Tamale

“…Fe was the primary water heavy metal in the order of open well > borehole > tap > spring > bottled water. ,is was followed by Zn levels in the order of tap > bottled > spring > borehole > open well. …”
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Calculation Model and Decoupling Coefficient Sensitivity Study of Periphery Hole for Eccentric Decoupled Charge in Highway Tunnels by Yuanqing Wang, Junfeng Liu

“…On the basis of the eccentric decoupled charge form on site and borehole concentric decoupled computational theory, the calculation model of eccentric decoupling charge would be established in the present study. …”
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