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Wyszukujesz frazę "Qu, Jing" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Effects of water intake layout along the wharf shoreline on ships
Autorzy:
Kong, Xian-wei
Ding, Lei
Liu, Hai-cheng
Qu, Jing
Li, Xiao-song
Tematy:
water intake
physical model
numerical model
lateral flow
hydrodynamic force
Pokaż więcej
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Powiązania:
https://bibliotekanauki.pl/articles/258971.pdf  Link otwiera się w nowym oknie
Opis:
The construction of a water intake along the wharf shoreline can realise the intensive and comprehensive utilisation of the shoreline. However, since the water intake will increase the lateral flow at the wharf and also the hydrodynamic forces on ships, it will bring risks to ships mooring and leaving. The effects of the water intake on ships are studied using a physical model, numerical model and standard formulas. The results show that it leads to an increase of the hydrodynamic forces acting on the ship when the standard formulas are used to calculate the forces without considering the water level difference between the two sides of the ship. The results of the physical model are closer to the real situation. Measures that can effectively reduce the influence of the water intake on ships are proposed by increasing the distance between the wharf front and the front of the water intake as well as the depth of the water inlet windows.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on the stability evolution law of expansive soft rock roadway affected by seasonal wet-dry cycle
Autorzy:
Jing, Hongdi
Qu, Fuming
Liu, Xiaobo
Zhang, Guangliang
Zhang, Xingfan
Ma, Xinbo
Tematy:
kopalnia podziemna
rozciągliwość
reologia
minerały ilaste
underground mine
expansibility
rheology
clay minerals
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Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Powiązania:
https://bibliotekanauki.pl/articles/59111437.pdf  Link otwiera się w nowym oknie
Opis:
Many open-pit mines are gradually converted to underground mining, the problem of roadway surrounding rock damage caused by expansive soft rock is becoming increasingly problematic. To study the seasonal evolution of expansive rock mass containing clay minerals, an underground mine transferred from an open-pit was selected as the experimental mine. The experimental results of SEM electron microscopy and X-ray diffraction confirmed that the surrounding rock of the main haulage roadway contains a large number of expansive clay minerals. The expansive grade of the main transport roadway’s surrounding rock could then be identified as the medium expansive rock mass, which has a large amount of exchangeable cation and strong water absorption capacity, based on the combined test results of dry saturated water absorption and free expansion deformation. The water swelling can cause the roadway to considerably deform, and then the surrounding rock will have strong rheological characteristics. From the research results in the text, the seasonal evolution law of the main haulage roadway in the experimental mine was obtained, and the deformation law of the expansive rock mass under different dry and wet conditions was revealed. The research results provide a reference for studying the stability evolution law of expansive soft rocks in underground mines.
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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