Geochemical characteristics and depositional environment of the Shahejie Formation in the Binnan Oilfield, ChinaJournal of Geophysics and Engineering - Tập 17 Số 3 - Trang 539-551 - 2020
Xiaochun Zuo, Cunlei Li, Jinliang Zhang, G. Ma, Panpan Chen
Abstract Trace elements in sedimentary rocks are highly sensitive to
palaeoaquatic environmental changes in a sedimentary environment, making them an
effective means for studying the paleoclimate and paleoenvironment during the
deposition of sediments. The trace elements and major elements of mudstone cores
sampled in the Binnan Oilfield in China were tested by inductively coupled
plasma mass spec... hiện toàn bộ
Comparative analysis of the mine pressure at non-pillar longwall mining by roof cutting and traditional longwall miningJournal of Geophysics and Engineering - Tập 16 Số 2 - Trang 423-438 - 2019
Peng Zhou, Yajun Wang, Genliang Zhu, Yubing Gao
Abstract Non-pillar coal mining has been developed and implemented in the recent
decades in China's coal mining industry. The non-pillar longwall mining by roof
cutting without pre-excavated entry (N00 mining method) is one of the latest
non-pillar mining methods and this method has the advantages of reduced roadway
drivage ratio and increased resource recovery ratio. Previous studies show that
th... hiện toàn bộ