Effect of the Outer Pipe on Reducing Direct Coupling of the Thin Borehole Radar Probe in Thick Water-Filled Borehole by Satoshi Ebihara, Raiki Masui, Koki Koyama, Yuki Tsujikawa, Yuto Nishida

Subjects: “…directional borehole radar…”
Get full text

Damage evolution characteristics of coal body in borehole at deep roadway wall and strength weakening mechanism of surrounding rock in borehole by Ke DING, Hualei ZHANG, Lianguo WANG, Jiaxing GUO, Yaoyao MENG

“…., deep coal body (three-way loading state) and shallow coal body (two-way loading state), under different borehole diameters were studied. The pre-peak crack damage relationship of deep and shallow boreholes in the roadway was established, and the strength weakening mechanism of surrounding rock of pressure relief boreholes in deep roadway was revealed. …”
Get full text

Characterizing Subsurface Environments Using Borehole Magnetic Gradiometry by Mohammad Forman Asgharzadeh, Hasan Ghasemzadeh, Ralph von Frese, Kamran Ighani

Subjects: Get full text

Parametric Study of the Borehole Drilling in Jointed Rock Mass by Yanan Gao, Yudong Zhang, Zetian Zhang, Minghui Li, Yingfeng Sun, Donghao Lan, Feng Gao

“…In this paper, the boundary element model of the borehole in the jointed coal and rock mass is established to study the influence of joints on the stress and displacement field. …”
Get full text

Numerical Simulation of Parameters Optimization for Goaf Gas Boreholes by Jiajia Liu, Jianliang Gao, Ming Yang, Dan Wang, Liang Wang

Get full text

Assessment of The Quality of Borehole Water in Kanenankumba Village Hoima Municipality. by Tayeebwa, Joshua

Subjects: Get full text

Features of Adjusting the Frozen Soil Properties Using Borehole Temperature Measurements by Mikhail Semin, Lev Levin, Aleksandr Bogomyagkov, Aleksei Pugin

“…The paper examines the theoretical issues of using borehole temperature survey data to control a frozen wall formed around the sinking mine shafts of the Nezhinsk mining and processing plant potash mine. …”
Get full text

Study of borehole stability of volcanic rock formation with the influence of multiple factors by Mingming Zhang, Jinglin Wen, Zhiming Xu, Zhiwei Xu, Jiang Feng, Xingdong Zhao

“…Abstract Borehole instability in igneous rock formation has attracted more and more attention in recent ten years. …”
Get full text

Radioisotope and Metal Concentrations in Borehole Water Samples of Umuahia and Umudike, Nigeria by J.C. Nnaji, O.U. Igwe, K.M. Onyedim, P. Okafor

“…  The study examined metal and radioisotope concentrations in boreholes water samples collected from the neighbouring towns of in Umuahia and Umudike, Abia State, Nigeria. …”
Get full text

Simulation of the Operation of a Borehole Groundwater Intake with an Annular Prefabricated Conduit by V. V. Veremenyuk, V. V. Ivashechkin, V. I. Krytskaya

“…Among the considered options for schemes of prefabricated water conduits of borehole water intakes, the main ones are linear and ring schemes. …”
Get full text

Rational Boreholes Arrangement of Gas Extraction from Unloaded Coal Seam by Chaojun Fan, Sheng Li, Haohao Zhang, Zhenhua Yang

“…In order to enhance gas extraction from unloaded coal seam by drilling borehole in the floor roadway, the mechanism of stress relief improving permeability by protective coal seam mining was analyzed. …”
Get full text

Experimental Study on the Influence of Borehole Angles on Fracture Grouting in Limestone Aquifers by Jianbo Li, Yanchun Xu

“…Therefore, the experimental means in this paper are used to study the fracture grouting effect under the influence of borehole angles. A special device composed of boreholes and fractures is designed to study the whole process of grouting in limestone fractures. …”
Get full text

Research and Optimization of Gas Extraction by Crossing-Seam Boreholes from Floor Roadway by Gang Li, Jiafei Teng

“…Hydraulic punching was carried out, and coal was washed out of the borehole, which expanded the contact area between the borehole wall and coal seam. …”
Get full text

Optimization of Directional Long Boreholes Unloading Gas Extraction Process and Application Research by Chunhua Zhang, Yuqi Li

Subjects: Get full text

Study of Tunnel-Face to Borehole ERI (TBERI) Measurement Configurations and Its Optimization by Wei Zhou, Lichao Nie, Yongheng Zhang, Yonghao Pang, Zhao Dong, Zhimin An, Zhengyu Liu, Chuanyi Ma

“…In this paper, the tunnel-face and borehole ERI (TBERI) method in tunnels was studied. …”
Get full text

NUMERICAL AND EXPERIMENTAL ANALYSIS OF UNSTEADY WORK OF U-SHAPE BOREHOLE HEAT EXCHANGER by S. A. Filatau

Subjects: “…u-shape borehole heat exchanger…”
Get full text

Research on borehole stability of shale based on seepage-stress-damage coupling model by Xiaofeng Ran, Yuezhi Wang, Shanpo Jia

“…In oil drilling, one of the most complicated problems is borehole stability of shale. Based on the theory of continuum damage mechanics, a modified Mohr-Coulomb failure criterion according to plastic damage evolution and the seepage-stress coupling is established. …”
Get full text

Cocompetitive Characteristics and Quantitative Design of Engineering Parameters for Coal Gas Predrainage Boreholes by Tong-qiang Xia, Jiao-fei He, Zi-long Li, Xiao-yan Sun, Dun-shuai Sun, Jian-hang Lu, Hao-jie Cui

“…Based on gas-air mixed flow, a multifield coupling 3d model of coal gas extraction using boreholes was developed. The content, method, and principle of optimal spacing parameter design of extraction borehole were proposed, and the constraint conditions and objective function of optimal design were constructed. …”
Get full text

Borehole heat exchangers in coastal areas may reduce heatwave seagrass loss by Rotman Criollo, Víctor Vilarrasa, Alejandro Orfila, Núria Marbà, Angels Fernández-Mora

“…Abstract Mitigation of climate change, implies, among other measures, the increase on the use of carbon-free energy sources, ensuring a zero environmental footprint. Borehole heat exchangers (BHE), a renewable heat source from the ground used for thermal regulation of infrastructures, could significantly reduce CO2 emissions. …”
Get full text

Goaf Gas Control Improvement by Optimizing the Adjacent Roadway Large-Diameter Boreholes by Wei Wang, Zongxiang Li, Hongming Yu

“…This study introduced gas control technology in goaf using adjacent roadway large-diameter (550 mm) boreholes to control gas accumulation in the upper corner of a fully mechanized working face in high-gas coal seams. …”
Get full text