Studies on the seepage characteristics of water-sand cracks are of great significance to reveal the mechanisms of water and sand inrush. Using a self-made water-sand fracture seepage test instrument, a water-sand seepage test was carried out, and the permeability of water and sand in the fracture was determined. The hysteresis characteristics of water-sand flow in the fracture were …
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Mechanism sand production process. The mechanism sand production process mainly includes 7 systems: feeding–coarse crushing–fine crushing–grading–dust collecting– sand washing and cleaning–transporting.This is the wet production process, including the main equipment such as hopper, vibrating feeder, jaw crusher, impact crusher, sand making machine, vibrating screen, dust collector ...
Mechanisms of creep at elevated temperatures lead to AE and that achieve strain at short times and long times in the presence of water also are responsible for strain at long times in the dry experiments. The At all conditions tested, the quartz sand exhib- microstructure observation that the degree of its transient, decelerating creep [28,29 ...
These mechanisms do not operate independently but are inter-related, coordinately contributing to the development of chemo-brain. Here we review the relationships of these mechanisms and pathways in attempt to provide mechanistic insights into the doxorubicin-induced cognitive impairment.
On 22 May 2017, a groundwater inrush accident occurred in the gob area of coal floor at Dongyu Coal Mine in Qingxu County, Shanxi Province, China. The water inrush accident caused great damage, among which six people died and the direct economic loss was about CNY 5.05 million. An elliptical permeable passage appeared at the floor of the water inrush point, and the lithology of the outburst is ...
silty sand： ... saturated silty sand and miscellaneous fill in the foundation engineering of the transformer stations in shanxi province ... The thesis is the initial research content of the project " bucket foundation and unstability mechanism research influenced by bucket foundation on silty . …
The effects of Ca/S molar ratio, catalyst type, catalyst dosage, temperature on desulfurization and denitrification efficiency were investigated in the coal-powder combustion with corn cobs as biomass. The thermal characteristics of Shanxi coal and corn cob blends with V-TiO2 were evaluated by thermogravimetric analyzer. The catalytic mechanisms of V-TiO2 on combustion, desulfurization and ...
A serious groundwater inrush occurred at the Wangjialing coal mine on March 28, 2010. Great effort from all over the country was taken during the postaccident rescue. However, triggered by accumulated water in the upper abandoned tunnels and goafs of a nearby closed individually owned coal mine, it caused great damage, including 38 deaths and direct economic losses of over 49 million yuan.
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): this paper, we found a mechanism which leads to the choice of a finite wavelength in the pattern forming system. The main di#erence between our model and the model of Hulscher (1996) is that here, we drop the assumption that the turbulent boundary layer is a constant.
[18]Wang Z F, He S M, Liu H D, et al. Formation mechanism and risk assessment of unstable rock mass at the Yumenkou tunnel entrance, Shanxi province, China[J]. Bulletin of Engineering Geology and the Environment, 2020: 1-16.
Corrosion Mechanisms in Chloride and Carbonate Salts . Alan M. Kruizenga . Prepared by Sandia National Laboratories Albuquerque, New Mexico 87185 and Livermore, California 94550 . Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation,
The transport of dust and sand by wind can provide a major mechanism conducive to land form changes due to aeolian activity, including sandy coasts, deserts and agricultural fields.
Failure Mechanisms in Sand over a Deep Active Trapdoor Yuri D. Costa1; Jorge G. Zornberg, M.ASCE2; Benedito S. Bueno3; and Carina L. Costa4 Abstract: An experimental testing program was undertaken to investigate failure mechanisms induced by the active movement of a deep rectangular trapdoor underlying a granular soil. Reduced-scale models were tested under normal gravity as well …
Technology in Loess Region, Shanxi Transportation. Research Institute, Taiyuan 030000, Shanxi, China. 123. Acta Geotechnica (2017) 12:971–986. ... strength enhancing mechanism of …
Understanding the genetic mechanisms of local adaptation is an important emerging topic in molecular ecology and evolutionary biology. Here, we identify the physiological changes and differential expression of genes among different weeping forsythia populations under drought stress in common garden experiments. Physiological results showed that HBWZ might have higher drought …
Strengthening mechanism of cemented hydrate-bearing sand at microscales Jun Yoneda1, Yusuke Jin2, Jun Katagiri1, and Norio Tenma1 1Methane Hydrate Geo-mechanics Research Group, Research Institute of Energy Frontier, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan, 2Methane Hydrate ...
The invention discloses resin sand casting equipment and a casting process, which comprises a cylinder, a cross beam, a first connecting rod, a piston rod, a lower die holder, a base, a sprue gate, a positioning mechanism, an upper die holder, a groove and a pushing-out mechanism, a lower die holder is fixed at the center of the top of the base through a bolt, a groove is formed in the lower ...
Shanxi the Pingshuo maximum aggregate production line The mechanism sands project preparatory work started on October 4, 2011, located in the 1450 pan Antaibao mine waste dump, covers an area of 150,000 square meters, the main production line on July 2 this year for the first time selected by the Zhengzhou Machinery Co., the ...
Morphodynamic mechanisms for the formation of asymmetric barchans: improvement of the Bagnold and Tsoar models, Environmental Earth Sciences, 2016, 75:1~9. 4. Ping Lü, Zhibao Dong, Xiaoming Ma, (2016). Aeolian sand transport above three desert surfaces in northern China with different characteristics (shifting sand, straw-checkerboard, and ...
Microbial community response reveals underlying mechanism of industrial-scale manganese sand biofilters used for the simultaneous removal of iron, manganese and ammonia from groundwater ... (No. QA201615), by State Key Laboratory Breeding Base of Coal Science and Technology Co-founded by Shanxi Province and the Ministry of Science and ...
Shanxi Source. Journal of Petroleum Technology (6) Petrowiki (3) Date. Earlier than January, 2016 (5) ... reservoir for CBM. A comparison of the two reservoir types shows profound differences in reservoir properties, storage mechanisms, flow mechanisms, and production profiles. ... Tight sand gas, one of the main types of unconventional gas ...
Hornblende's plastic and superplastic deformation mechanisms were studied on the basis of some new information obtained from amphibolite samples in the Hengshan Mountains (Hengshan, Shanxi, China). For this purpose, the samples were measured and analyzed by optical microscope (OM), electron probe microanalysis (EPMA), transmission electron microscope (TEM) and electron …
Shanxi, Inner Mongolia, Shaanxi, and other Chinese regions. ... Failure mechanism of the large-section roadway under mined ... 6 medium sand 4.3 7 3-5# Coal seam 17.5 8 Coarse sand 3.0 9 medium sand 5.0 10 fi nesandsto 11.2 Protective pillar for main roadway drill hole 3 m
Shanxi Architecture, 2009 ... tests has been carried out to develop an understanding of the influence of the geocell material on the load-carrying mechanism of the geocell-reinforced sand ...
Abstract: During the sedimentary period of Shanxi Formation in Ordos Basin,terrestrial plants flourished, which provides sufficient gas source for the formation of natural gas. The accumulation of oil and gas is controlled by lithology and lithofacies. Therefore,it is necessary to study the configuration and distribution of sand bodies of Shanxi Formation.
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A comprehensive study on regional stress field around the Taigu fault zone in Shanxi Province, China, was performed in this study. To get a better understanding of the present-day stress status in this area, 31 focal mechanisms of M L ≥3 earthquakes since 1965 were compiled, and the best stress tensor was then inverted based on the database. Additionally, magnetic fabrics along the Taigu ...
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Microbial community response reveals underlying mechanism of industrial-scale manganese sand biofilters used for the simultaneous removal of iron, manganese and ammonia from groundwater ... 4 State Key Laboratory Breeding Base of Coal Science and Technology Co-founded by Shanxi Province and the Ministry of Science and Technology, Taiyuan ...
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