Hard Kaolin High Yield and Stoping Technology in Suoli Mine

2012 ◽  
Vol 170-173 ◽  
pp. 403-408
Author(s):  
Ren Shu Yang ◽  
De Jun Meng ◽  
Dong Ming Guo ◽  
Peng Xu ◽  
Yan Bing Wang
Keyword(s):  
Production Efficiency ◽  
Working Condition ◽  
High Yield ◽  
Unit Consumption ◽  
Rock Support ◽  
Construction Technique ◽  
Geological Conditions ◽  
Long Time ◽  
Efficient Construction ◽  
Mechanical Mining

The backward blasting of the mine technology and stoping technology will lead to a long time of blasting, high labor intensity and low production efficiency, which also cause roof collapse and the blast of fly rock, support fall and overthrowing the chain-trigger, which cause a larger hidden of production. Through using the mechanical mining technology of the high yielding and efficiency of kaolin, which fundamentally improve the working conditions of workers and safety working condition, will laid the foundation for the increasing of production and efficiency. The production has been promoted from 250-300t/d to 550-650t/d now, which the efficiency is increasing more than 120%. Meanwhile, the optimal of blasting parameters is benefit to roof control after blasting, which can improve the efficiency of blasting, reduce the unit consumption of dynamite, which can save about 0.115kg/ m3; and reduce the intensity of the workers and the damage of the support. This construction technique can provides a reference significance for safe and efficient construction of the mine under similar geological conditions.

Engineering-Geological Studies Of The Territory, Soils Of Foundation And Foundations Of The Architectural Monument Of The "Melnikov’s House" In Moscow

2019 ◽  
pp. 41-51
Keyword(s):  
Working Condition ◽  
Overlying Water ◽  
North East ◽  
The North ◽  
Geological Processes ◽  
Architectural Monument ◽  
Geological Conditions ◽  
Zone Of Influence ◽  
Complex Engineering ◽  
Building Engineering

On the basis of engineering and design surveys of the building, engineering-geological and geophysical studies of the soils of the territory conducted by the article authors, as well as with due regard for the results of studies conducted on this territory by other authors, the features of the foundations, soils of their foundation and engineering-geological conditions of the territory of the Melnikov House are established. It is shown that the Melnikov house is located under complex engineering-geological conditions on the territory of high geological risk, in the zone of influence of tectonic disturbance. To the North of the area there is a zone of intersection of the observed disturbance with a larger disturbance that can have an impact on geological processes. To the North-East of the site of the Melnikov House, a sharp immersion of the roof of carbon deposits was revealed. It promotes groundwater seepage into limestone of the carbonate strata from overlying water-bearing sands and activation of processes of suffusion removal and sinkhole phenomena of the soil. The surveyed area is assessed as potentially karst-hazardous and adjacent to it from the North-East territory as karst-dangerous. In this regard any construction on the adjacent territory can provoke activation of sinkhole phenomena on the surface. The foundations of the building are basically in working condition. Existing defects can be eliminated during repair. The foundation soils mainly have sufficient bearing capacity. Areas of the base with bulk soil can be reinforced. However, when developing a project for the reconstruction of the building and its territory, it should be taken into account that the design of the Melnikov House does not provide for its operation on the loads at the formation of sinkholes.

Analysis of Crack Initiation and Treatment in the South-to-North Water Diversion Suining Two Station Project

2013 ◽  
Vol 368-370 ◽  
pp. 1123-1127
Author(s):  
Ze Jun Liu ◽  
Jun Hao Wang ◽  
Qing Shan Zheng ◽  
Yue Xin She ◽  
Yi Jiang
Keyword(s):  
Crack Initiation ◽  
Large Scale ◽  
Water Diversion ◽  
Regulatory Requirements ◽  
Substantial Impact ◽  
Geological Conditions ◽  
Project Construction ◽  
Long Time ◽  
North Water ◽  
Better Than

For projects, especially large-scale projects, due to the long time of project construction, the construction of the complexity of the geological conditions, sometimes inevitably lead to quality defects.How scientific and reasonable quality defects hidden works to take remedial measures, or effective correction to restore the loss of time, cost, quality, safety,become an important engineering problem.Some cracks, will not have a substantial impact on the project, you can take measures to deal with to ensure proper implementation of the project.The article takes the analysis of crack initiation and Treatment in the Suining two station project.There are a lot of reference in processing defects in the country's large projects.Statistical indicators from the implementation of the results, analysis shows that to achieve even better than the regulatory requirements, and achieved the expected results.

Werbungskosten oder Subvention? Zur Rechtfertigung der Entfernungspauschale und Perspektiven ihrer Ausgestaltung

2008 ◽  
Vol 57 (1) ◽  
Author(s):  
Stefan Homburg ◽  
Holger Karrenbrock ◽  
Johann Eekhoff
Keyword(s):  
Production Efficiency ◽  
Married Couples ◽  
Point Of View ◽  
Occupational Activity ◽  
Tax Base ◽  
Economic Point ◽  
Long Run ◽  
Housing Costs ◽  
Long Time ◽  
Cost Factors

AbstractStefan Homburg points out that in Germany commuting expenses have been deductible from the income tax base for a long time. Germany’s grand coalition has now restricted this deduction. The article analyses whether or not this was justified from an economic point of view. It is shown that, in the long run, the tax treatment of commuting expenses has nothing to do with production efficiency. Commuting rather represents a form of household production. The overall conclusion is that the more restrictive tax treatment seems economically justifiable.Whereas Holger Karrenbrock deals with the arguments of the proponents of the so-called ‘Werkstorprinzip’, a principle which means that for tax purposes the sphere of occupational activity ends at the factory gate. He demonstrates that expenses for commuting to and from work are incomerelated and therefore have to be tax deductible. The commutation to and from work is a condition precedent to income production, and the corresponding expenses solely arise from the taxpayer’s occupation, which both is essential in his opinion.Johann Eekhoff, however, emphasizes that since 2007 costs of commuting in Germany are in principle no longer deductible from taxable income. This change in taxation is appreciated because commuting costs can be substituted by housing costs. Generally speaking, the sum of both cost factors is the same at any distances from work. Only for married couples costs of a second household near the workplace should be tax-deductible if both partners are employed at different places.

scholarly journals Ensete ventricosum: A Multipurpose Crop against Hunger in Ethiopia

2020 ◽  
Vol 2020 ◽  
pp. 1-10 ◽  
Author(s):  
Getahun Yemata
Keyword(s):  
Drug Loading ◽  
Scientific Information ◽  
High Yield ◽  
High Genetic Diversity ◽  
Research Attention ◽  
Ensete Ventricosum ◽  
Fermented Product ◽  
Wide Range ◽  
Long Time ◽  
Comparable Quality

Ensete ventricosum is a traditional multipurpose crop mainly used as a staple/co-staple food for over 20 million people in Ethiopia. Despite this, scientific information about the crop is scarce. Three types of food, viz., Kocho (fermented product from scraped pseudostem and grated corm), Bulla (dehydrated juice), and Amicho (boiled corm) can be prepared from enset. These products are particularly rich in carbohydrates, minerals, fibres, and phenolics, but poor in proteins. Such meals are usually served with meat and cheese to supplement proteins. As a food crop, it has useful attributes such as foods can be stored for long time, grows in wide range of environments, produces high yield per unit area, and tolerates drought. It has an irreplaceable role as a feed for animals. Enset starch is found to have higher or comparable quality to potato and maize starch and widely used as a tablet binder and disintegrant and also in pharmaceutical gelling, drug loading, and release processes. Moreover, enset shows high genetic diversity within a population which in turn renders resilience and food security against the ever-changing environmental factors and land use dynamics. Therefore, more research attention and funding should be given to magnify and make wider use of the crop.

scholarly journals Research on Mechanism and Control of Floor Heave of Mining-Influenced Roadway in Top Coal Caving Working Face

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 381 ◽  
Author(s):  
Xingping Lai ◽  
Huicong Xu ◽  
Pengfei Shan ◽  
Yanlei Kang ◽  
Zeyang Wang ◽  
...  
Keyword(s):  
Coal Mine ◽  
High Efficiency ◽  
Soft Rock ◽  
Surrounding Rock ◽  
High Yield ◽  
Geological Investigation ◽  
Geological Conditions ◽  
Floor Heave ◽  
Damage Depth ◽  
Squeeze Effect

The stability of the surrounding rock is the key problem regarding the normal use of coal mine roadways, and the floor heave of roadways is one of the key factors that can restrict high-yield and high-efficiency mining. Based on the 1305 auxiliary transportation roadway geological conditions in the Dananhu No. 1 Coal Mine, Xinjiang, the mechanism of roadway floor heave was studied by field geological investigation, theoretical analysis, and numerical simulation. We think that the surrounding rock of the roadway presents asymmetrical shrinkage under the original support condition, and it is the extrusion flow type floor heave. The bottom without support and influence of mining are the important causes of floor heave. Therefore, the optimal support scheme is proposed and verified. The results show that the maximum damage depth of the roadway floor is 3.2 m, and the damage depth of the floor of roadway ribs is 3.05 m. The floor heave was decreased from 735 mm to 268 mm, and the force of the rib bolts was reduced from 309 kN to 90 kN after using the optimization supporting scheme. This scheme effectively alleviated the “squeeze” effect of the two ribs on the soft rock floor, and the surrounding rock system achieves long-term stability after optimized support. This provides scientific guidance for field safe mining.

scholarly journals Cacao breeding in Bahia, Brazil: strategies and results

2011 ◽  
Vol 11 (spe) ◽  
pp. 73-81 ◽  
Author(s):  
Uilson Vanderlei Lopes ◽  
Wilson Reis Monteiro ◽  
José Luis Pires ◽  
Didier Clement ◽  
Milton Macoto Yamada ◽  
...  
Keyword(s):  
Breeding Program ◽  
High Yield ◽  
Breeding Strategies ◽  
Long Time

Cacao was introduced in Bahia in 1756, becoming later the largest producer state in the country. In order to support the planting of cacao in the region, a breeding program was established by CEPEC at the beginning of the 1970s. For a long time, the program consisted in testing new hybrids (full-sibs) and releasing a mixture of the best ones to farmers. Lately, particularly after the witches´ broom arrival in the region, in 1989, recurrent breeding strategies were implemented, aiming mainly the development of clones. From 1993 to 2010, more than 500 progenies, accumulating 30 thousand trees, were developed by crossing many parents with resistance to witches´ broom, high yield and other traits. In this period, more than 500 clones were put in trials and 39 clones and 3 hybrids were released to farmers. In this paper the strategies and results achieved by the program are reviewed. Overall the program has good interface with pathology and genomic programs.

Regulator Experiment of Lubricating Oil Reutilization of DongFeng 4B (DF4B) Type Locomotive

2011 ◽  
Vol 396-398 ◽  
pp. 1895-1898
Author(s):  
Chong Zhuo Wang ◽  
Bao Hui Wang
Keyword(s):  
High Speed ◽  
Simulation Experiment ◽  
Working Condition ◽  
Laboratory Simulation ◽  
Lubricating Oil ◽  
Heavy Load ◽  
New Thought ◽  
Oil Resources ◽  
Long Time ◽  
Train Speed

With the increase of locomotive traction tonnage and train speed improvements, the DF4B locomotives have been in heavy load and high speed working condition for long time, while the lubricating oil dilution problem has not been solved. We have been in the research of the three-generation oil dilution of theDF4B locomotives in laboratory simulation experiment, especially in the oil addition experiments of the kinematic viscosity, and got a numerical trend graph and regression empirical formula. Through the diluted oil adjusting agent experiment, we inspected DF4B locomotives diesel engine for a period of tracking, and discovered that the modified oil has little influence on locomotive riding quality, thereby providing the new thought of reusing and saving the oil resources.

scholarly journals Conditions of development of weeds, pests and diseases in crops of monoculture of hemp, depending on fertilizer

2018 ◽  
pp. 66-80
Author(s):  
Mykola Myhal ◽  
Iryna Layko ◽  
Serhiy Mishchenko ◽  
Hanna Kyrychenko ◽  
Hanna Layko ◽  
...  
Keyword(s):  
Disease Control ◽  
Flowering Plants ◽  
High Yield ◽  
Mineral Fertilizers ◽  
Pests And Diseases ◽  
Weed Seeds ◽  
Long Time

The article presents the results of studies of the conditions for the development of weeds, pests and diseases in the sowing of hemp monoculture. It was found that hemp is well adapted for growing for a long time in one field, providing a high yield of hemp production. It is recommended to grow a monoculture on fiber (harvesting in the phase of flowering plants). This makes it possible to avoid the ripening of seeds of the bulk of weeds and the main periods of harmfulness of pests and diseases. Differences in the degree of weediness of the field were revealed depending on the form and dose of fertilizers. In areas fertilized with manure, there are more weeds than in areas with introduced fertilizers. The large contamination of the fertilized areas is a consequence of the introduction of viable weed seeds together with manure, which is not properly harvested and stored in field shoulders. With an increase in the dose of manure, the number of weeds increases, and an increase in the dose of mineral fertilizers with which weed seeds are not introduced, on the contrary, decreases as a result of an increase in the height of the stalk and its foliage. This is clearly confirmed by the fact that during the period from 3-4 pairs of leaves and to the phase of flowering plants, a large number of weeds die. Indicated on agrotechnical methods of weed, pest and disease control when growing hemp monoculture.

Research on the New Combined Type Crusher Hammer

2014 ◽  
Vol 488-489 ◽  
pp. 1160-1164
Author(s):  
Xing Ming Zhao ◽  
Hai Tao Zhou ◽  
Shou Fan Rong ◽  
Bao Guo Yang ◽  
Chun Hong Li
Keyword(s):  
Production Efficiency ◽  
Working Condition ◽  
Metallic Materials ◽  
Casting Technology ◽  
The Poor ◽  
Composite Casting ◽  
Hammer Head ◽  
The Impact ◽  
Bimetal Composite ◽  
Improve Production Efficiency

To solve the problems of installed trival, resource waste, hammerhead falling off and improve the poor abrasion resistance of hammer handle under the crusher hammers working condition, the new combined type crusher hammers were designed by connecting separated hammer handle and separated hammer head. When hammer head were worn badly, we just replaced hammer head and don't have to remove the shaft rod. This design can save a lot of time and labor force, improve production efficiency and we can save a lot of resources by reusing the hammer handle; At the same time, hammer tip was casted with liquid-liquid bimetal composite casting technology of casting, under the premise of guaranteeing the wear-resisting, which can also ensure that the impact toughness of the joint. Validated by actual working condition, hammer handle can be replaced at least five times for this design of hammer, and each group has 24 hammer heads, every 5 sets of hammer heads can save 1200 kg metallic materials, 1800 KWh and CO2 emissions dropped by 1795 kg.

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