Results 21 to 30 of about 136,634 (354)
, 2021 The hard roof difficult to collapse easily causes gas accumulation, which threatens the production safety of coal mine. Therefore, roof pre-cracking is required.
Tang Wei +5 more
semanticscholar +1 more source
Modeling magnetostraigraphy in a borehole [PDF]
Geophysics, 1989 Abstract The magnetic field along a hole bored through a sequence of dipping layers with varying magnetization and planar interfaces is calculated. The emphasis is on recovering remanent magnetization polarity transitions for magnetostratigraphic applications (dating, correlations), although intensity of remanent magnetization can in ...
Gallet, Yves, Courtillot, Vincent
openaire +1 more source
Research on Dynamic Index of Coal Seams Area Based on Water Jet Slotting
Meikuang Anquan, 2020 Based on the water jet slotting coal seam permeability increase technology, the stress distribution state of the coal after slotting is analyzed, and the radial and tangential stresses of the slotted borehole are calculated.
LIU Jian, JIANG Wenzhong, REN Zhongjiu, LIU Ziwen
doaj +1 more source
Investigating the quality of groundwater in Ibeju-Lekki Local Government Area, Lagos State
Water Science, 2023 This study assessed the groundwater quality in the rapidly urbanizing peri-urban region of the Ibeju-Lekki Local Government Area in Lagos State, Nigeria, during the rainy season. This study employed a two-stage sampling technique to select representative
Chiemeka Henry Ezechinyere +1 more
doaj +1 more source
Molecules, 2020 This study assessed the groundwater quality around two municipal solid waste landfill sites, in the city of Bloemfontein, Free State Province, South Africa. The two landfill sites are located in two contrasting geological terrains, with both lacking some
Rinae Makhadi +2 more
doaj +1 more source
Borehole‐Based Characterization of Deep Mixed‐Mode Crevasses at a Greenlandic Outlet Glacier
AGU Advances, 2021 Optical televiewer borehole logging within a crevassed region of fast‐moving Store Glacier, Greenland, revealed the presence of 35 high‐angle planes that cut across the background primary stratification.
Bryn Hubbard +6 more
doaj +1 more source
Energies, 2019 Cementitious grouts are being developed for use as sealing and support matrices (SSMs) in deep borehole disposal (DBD) where temperatures do not exceed 190 °C. They will seal radioactive waste containers into the bottom 2 km of holes drilled up to 5
Nicholas Charles Collier +2 more
doaj +1 more source
CONCENTRATION LEVELS OF PHYSICO-CHEMICAL PROFILES AND QUALITY ASSESSMENT OF GROUNDWATER: A CASE STUDY OF SOUTHERN IJAW, BAYELSA STATE, SOUTHERN NIGERIA [PDF]
Engineering Heritage Journal, 2023 This study examined the concentration levels of physico-chemical profiles of groundwater quality of communities in Southern Ijaw Local Government Area of Bayelsa State, Nigeria. The seasonal variation of groundwater quality were evaluated.
Nwankwoala, H.O +2 more
doaj +1 more source
Downhole resistivity log, borehole J-719670
, 2021 This file includes archive data on the electrical resistivity from borehole J-719670, western part of the Bohemian Cretaceous Basin. The interval covers the uppermost Cenomanian through Middle Turonian.
Uličný, David +5 more
core +1 more source
Geofluids, 2019 A 3 km deep research borehole KFD1 was drilled in the Koyna reservoir-triggered seismicity region, Western India, between December 2016 and May 2017.
Nagaraju Podugu +3 more
doaj +1 more source