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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 new sand-wedge–forming mechanism in an extra-arid area Hongshou Lia,b,⁎,WanfuWanga,b,FasiWua,b, Hongtao Zhanb, Guobing Zhanga,b, Fei Qiub a The Conservation Institute of Dunhuang Academy, Dunhuang, 736200 Gansu, China b National Research Centre for Conservation of Ancient Wall Paintings, Dunhuang, 736200 Gansu, China article info abstract Article …
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China, Shanxi Xiaolangdi - Yellow river diversion project ... As the Yellow River conveys large quantities of sand, the pumps will be provided with a special abrasion-resistant coating. ... This ring is actuated via hydraulic cylinders and rotates the guide vanes into the desired position. A guide vane mechanism is an emergency closing element ...
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Based on field investigation, using multiple methods including SEM, XRD, as well as soil physics and soil chemistry methods, the particle composition, aggregate, and cement composition were measured on 48 samples of Malan loess from 12 counties of north Shaanxi province and west Shanxi province. The test results indicate that the cements, including clay minerals, super fine-grained carbonate ...
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Deformation and failure mechanism maps can provide a framework for understanding the time-dependent damage (Ashby, 1983). Mechanisms of property degradation and damage accumulation under complex thermomechanical and environmental conditions, especially those uniquely associated with the operation of HSCT, are discussed in this chapter.
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As a new technique, a fixed geogrid in a geogrid-reinforced and pile-supported (GRPS) embankments has been used to reduce the total and differential settlement. To investigate the load transfer mechanism of the fixed geogrid technique of a GRPS embankment, three discrete element method (DEM) models of pile-supported embankments were established, including an unreinforced embankment, a geogrid ...
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The work was supported by the Important Specialized Science and Technology Item of Shanxi Province (grant no. 20121101011), the National Natural Science Foundation of China (grant nos. 41161066, 41401053 and 41301609) and the Foundation for Young Scientists of Shanxi …
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12%Since the 1980s, increasing human activity and continuing over-exploitation of groundwater resources have caused the earth fissures in the rift basin in Shanxi, China, to enter an active phase. Buildings along these earth fissures have been seriously damaged. Four massive earth fissures that developed in the Taigu and Qixian areas of the eastern Taiyuan basin endanger …
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Fly-ash-cemented filling materials (FCFMs) have attracted much attention in recent years because they provide a green solution to the large-scale use of fly ash and coal gangue. To address the shortcomings of FCFMs, an electrochemical treatment was proposed to improve the early age strength and deformation characteristics of FCFMs. In this study, according to a single-factor experiment, the ...
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Geochemical characteristics and mechanism of organic matter accumulation of marine-continental transitional shale of the Lower Permian Shanxi Formation, southeastern Ordos Basin, North China ...
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The Yungang Grottoes are located on the south side of Mt. Wuzhou, 16 km from the south of Datong City, Shanxi Province, China. With a 1500-year history and famous for splendid stone carving arts relating to Buddha statues, the Yungang Grottoes were added to the world heritage list made by the United Nations Educational, Scientific, and Cultural Organization (UNESCO) in 2001 and visited by …
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China Others catalog of Valve Extension Spindles, Extension Spindle provided by China manufacturer - Shanxi Solid Industrial Co., Ltd., page1.
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Affiliations 1 Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan, 030001, China.; 2 Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, First Hospital of Shanxi Medical University, Taiyuan, 030001, China.; 3 Department of Otolaryngology Head & Neck Surgery, First Hospital of ...
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Technology in Loess Region, Shanxi Transportation. Research Institute, Taiyuan 030000, Shanxi, China. 123. Acta Geotechnica (2017) 12:971–986. ... strength enhancing mechanism of bio-cemented sand,
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China Clean Development Mechanism Fund. ... Gansu, Shanxi, Shaanxi, Henan and Shandong-as well as the Ningxia Hui and Inner Mongolia autonomous regions. Over the years, the river's environment has continued to improve thanks to water and sand management efforts, the document said. From : China Daily.
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Guangxi Laibin Fine Mechanism Sand Production Line. Project：Guangxi Laibin Fine Mechanism Sand Production Line. Site：Guangxi. Production：120 tons / day. Material: River Pebble / Basalt / Limestone
Dingxiang Hongli Flange Forging Co., Ltd. 9 products Shanxi DIN2573 SLIP-ON FLANGES,forging manufacture,THEADED FLANGES,DIN2527 BLINDFLANGES,DIN2631 WELDING NECK FLANGES,ANSI FORGED FLANGES,DIN 2545 SLIP-ON FLANGES,DIN 2527 BLIND FLANGES,DIN 2635 WELDING NECK ...
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In China, sand wedges have been found in Daxinganling in northeastern China (Guo and Li, 1981), in the southern Ordos Plateau in Inner Mongolia (Dong et al., 1985, Dong et al., 1996, Cui et al., 2004), in the Datong Basin of Shanxi Province in northern China (Yang et al., 1983), in the Hexi Corridor area (Cui and Song, 1992, Wu et al., 2007 ...
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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 ... (No. QA201615), by State Key Laboratory Breeding Base of Coal Science and Technology Co-founded by Shanxi Province and the Ministry of Science and ...
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Experimental testing provides insights into the deformation mechanism during hydrostatic and axial compression of coarse- and fine-grained sands with different packing including (1) natural coarse-grained sandstone, (2) densely packed fine-grained sand, and (3) loosely packed fine-grained sand.
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The sand or the abrasive material is first filled in the collecting compartment of the sandblasting equipment. Then with help of the air compressor such sand (sand mix with air, depends upon the type of the sandblasting equipment operating mechanism) are forcefully propelled in form of the strong jet through the nozzles.
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The 1969 Bohai earthquake occurred on July 18, 1969, at 13:24 local time. The epicenter was located in the Bohai Sea, off the coast of Shandong Province, China.The magnitude of this earthquake is M s 7.4. Areas of maximal intensity were mainly distributed around the estuary of the Yellow River.Ground cracks and sand boils were reported.
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This paper presents an efficient method of microbial-induced calcite precipitation (MICP) for cementation of sand particles. First, the influence of initial pH value of the culture medium on the growth of bacteria was discussed. Then, the compressive strength and calcium carbonate content of cemented sand columns with different sand particle sizes were measured to indicate the cementation ...
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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
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Water-rich sand is a common stratum in marine underground engineering. Grouting is the most common method for solving geological disasters in water-rich sand. However, the marine environment differs greatly from the land environment. The erosion and seepage of seawater ion cause significant deterioration of grouted body, which reduces the physical and mechanical properties of grouted body.
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By taking the third member of the Dongying Formation in the Cha71 fault block of the Chaheji oilfield as an example, the single sand body of the deltaic front underwater distributary channel is meticulously depicted by using the data of well logging and performance production. Portrays the vertical separation model, total lateral separation type, vertical type, lateral superposition type, 4 ...
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This year marks the 20th anniversary of the Beijing-Tianjin-Hebei sand sources control project, which the State Council initiated in 2000. According to the administration, forest coverage in the sand-source regions in Shanxi, Shaanxi and the Inner Mongolia autonomous region rose from 10.59 percent in 2000 to 18.67 percent today.
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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 ...
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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 ... (No. QA201615), by State Key Laboratory Breeding Base of Coal Science and Technology Co-founded by Shanxi Province and the Ministry of Science and ...
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Shanxi, Shaanxi, and Guizhou provinces. Shanxi has the larg- ... an index to investigate the influencing mechanism of erosion on the nonlinear hydraulic properties of the broken red sand-stones. Their experimental results showed that, as erosion seepage processed, the porosity and …
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1) mechanism sand instead of natural sand. . >>. 2) natural sands. . 1. Rock powders are used as admixture to the natural sands for roller compacted concrete of Jinghong hydroelectric project; . 2.
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In practical engineering, natural soil deposits often sustain an initial driving force prior to cyclic shear, owing to earthquakes, traffic and waves; such asymmetrical loading conditions may significantly affect the liquefaction susceptibility and failure mechanism of sand. To understand the typical cyclic liquefaction responses, comprehensive asymmetrical cyclic loading tests were conducted ...
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