Results 81 to 90 of about 17,616 (304)

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Strengthening the historical constructions made of limestone by treating with silicic acid based material

MATEC Web of Conferences, 2018
The paper a comparative study of limestones treated with the composition Oxal NK100 for increasing the durability of the limestones in historical buildings and the other limestones without any additives to investigate the effect of the composition Oxal ...
Sabri Mohanad, Korneeva Elena
doaj   +1 more source

Gaborlet‐guided sparse filtering: A novel intelligent method for lithology identification by vibration signals while drilling

Deep Underground Science and Engineering, EarlyView.
The flowchart illustrates rock specimen testing, vibration signal acquisition, and feature extraction with Gaborlet and sparse filtering for classification. Abstract Traditional lithology identification methods mainly rely on core sampling and well‐logging data.
Jian Hao, Danqi Zhang, Zhenqi Song, Jinrui Wang, Qi Wang, Heqing Liu   +5 more
wiley   +1 more source

Geological and Geographical Characteristics of Limestone and Karst Landforms in Japan: Insights from Akiyoshidai, Seiyo (Shikoku), and Okinoerabu Island

Geosciences
Limestone in Japan exhibits distinct distribution patterns and associated lithologies compared to limestone found in most other parts of the world. These differences reflect contrasting depositional settings and formation processes. While the majority of
Koji Wakita, Takashi Murakami, Tomohiro Tsuji, Kensaku Urata   +3 more
doaj   +1 more source

Field trip guide to Oligocene Limestones and Caves in the Waitomo District

, 2013
The field guide runs from Hamilton to Waitomo to Te Anga and return in limestone-dominated country developed in transgressive sedimentary deposits of the Oligocene Te Kuiti Group – a world class example of a temperate shelf carbonate depositional system.
Hendy, Chris H., Nelson, Campbell S.
core  

Dynamic geo‐hydrogeological monitoring‐driven situational awareness for real‐time floor water inrush risk prediction in deep mining

Deep Underground Science and Engineering, EarlyView.
The fused data extracted from the distributed monitoring system as the data basis, combined with dynamic geological data, are imported into a deep learning model. As the geological conditions of mining and excavation change, the risk of water inrush at the working face is retrieved in real time.
Yongjie Li, Huiyong Yin, Fangying Dong, Tao Wu, Chao Zhang   +4 more
wiley   +1 more source

Lithofacies palaeogeography and biostratigraphy of the lowermost horizons of the Middle Triassic Hallstatt Limestones (Argolis Peninsula, Greece)

Journal of Palaeogeography, 2013
Condensed ammonoid beds of the Hallstatt facies (Anisian–Ladinian) are widespread around the Ancient Theatre of Epidaurus, in the locality Theokafta of the Argolis Peninsula (eastern Peloponnesus).
Fotini A. Pomoni, Vassilis Tselepidis
doaj   +1 more source

INSOLUBLE RESIDUE STUDIES OF THE COLUMBUS AND DELAWARE LIMESTONES IN OHIO

, 1957
Several generations of geologists have contributed to our knowledge of the Columbus and Delaware limestones of Ohio. Their studies include lithologic and paleontologic descriptions of these formations and, to some extent, attempt to subdivide them into ...
C. H. Summerson, C. V. Moore, R. R. Jackson, Delaware Limestones In Ohio, R. A. Struble   +4 more
core  

Performance assessment of a potential underground thermal storage facility: Case study of the closed mine Prosper‐Haniel in the Ruhr coal mining area in Germany

Deep Underground Science and Engineering, EarlyView.
This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley   +1 more source

Correlation of Great Moravian mortars, underburned limestones and limestones from the Břeclav-Pohansko site with limestones of various provenance

, 2012
The paper gives an overview of identification possibilities of limestones source used for lime burning in the Břeclav-Pohansko archaeological site based on their chemical composition and comparison with mortars. Limestones from three sites were examined:
Kurdíková, Ludmila, Gregerová, Miroslava, Všianský, Dalibor   +2 more
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