Testing of model footings on reclaimed land, Wabamun, Alberta

1986 ◽  
Vol 23 (4) ◽  
pp. 541-547 ◽  
Author(s):  
S. Thomson ◽  
J. D. Scott ◽  
D. C. Sego ◽  
T. M. Schulz
Keyword(s):  
Surface Water ◽  
Key Words ◽  
Water Table ◽  
Research Work ◽  
Mine Spoil ◽  
Design Consideration ◽  
Reclaimed Land ◽  
Clay Shale ◽  
Compacted Soil

The level to gently undulating ground on backfilled mined-out areas is referred to as reclaimed mine spoil. This paper deals with model footings for light structures placed on such soil. For the case considered, the spoil is dominated by a disaggregated clay shale. Settlement of the spoil arises from self-weight, an increase in overburden, and saturation. This last source takes place as the water table rises or when surface infiltration occurs. This latter cause is the source of potentially damaging settlement and is the focus of the research work. Four footings, each 1 × 1 m, were placed on a 1 m thick mat composed of either preloaded, compacted soil, compacted soil/flyash mixture, or compacted flyash. Each footing was loaded to 61 kPa. The settlement was small under this load but every footing settled intolerably when the soil below the footing was saturated. However, the results have merit. Further design consideration needs to be devoted to obviating the ingress of surface water. Key words: settlement, spoil, reclaimed land, model footings, slaking.

scholarly journals Hydrogeological conditions in the southern part of Dang valley, mid-western Nepal

1970 ◽  
Vol 1 (2) ◽  
pp. 119-122
Author(s):  
Birendra Sapkota
Keyword(s):  
Surface Water ◽  
Key Words ◽  
Water Table ◽  
Unconfined Aquifer ◽  
Groundwater Potential ◽  
Safe Yield ◽  
Aquifer Systems ◽  
Drilling Data ◽  
Northern Portion ◽  
Piezometric Surface

The Dang valley consists of several patches of confined and unconfined aquifer systems. Drilling data reveals that the northern portion of the study area has more permeable surfaces than the southern and central portions. Annual domestic draft and safe yield were calculated to be 7.43 x106 m3/year and 3.16 x 107 m3/year, respectively. The fact that the safe yield is higher than the annual draft indicates the presence of good groundwater potential in the study area. Key words: terrace, lithology, aquifer, tubewell, yield, draft, piezometric surface, water table Himalayan Journal of Sciences 1(2): 119-122, 2003

scholarly journals The inventory results of water objects of Lviv

2014 ◽  
pp. 322-327 ◽  
Author(s):  
Volodymyr Shushnyak ◽  
Halyna Savka ◽  
Yuriy Verheles
Keyword(s):  
Surface Water ◽  
Key Words ◽  
Research Work ◽  
Historical Analysis ◽  
Object Surface ◽  
Water Object ◽  
Groundwater Aquifer ◽  
City Water

The historical analysis of Lviv water objects inventory is presented. The results of the research work on city water objects certification which took place in 2012 are elucidated. The classification of the water objects is proposed and their characteristics is given, main problems of their preservation are considered. Key words: water object, surface water, groundwater, aquifer.

Justification of the need to increase the fertility of reclaimed alluvial soils of JSC «Moskovskoe»

2020 ◽  
pp. 44-48
Author(s):  
Andrey ilinsky ◽  
Alexander Nefedov ◽  
Konstantin Evsenkin
Keyword(s):  
Organic Matter ◽  
Agricultural Land ◽  
Crop Yields ◽  
Anthropogenic Impacts ◽  
Fertility Restoration ◽  
Research Work ◽  
Alluvial Soils ◽  
Ecological Stability ◽  
Reclaimed Land ◽  
Adverse Weather

Global climatic changes, technogenic pollution by pollutants, violations of technologies of exploitation of reclaimed land lead to a decrease in fertility and soil degradation of agricultural land. Adverse weather conditions, resulting in a lack of adequate flood water, and economic difficulties in agriculture make it difficult to fill the deficit of organic matter and macronutrients in reclaimed alluvial soils. The monitoring of agrochemical properties of alluvial meadow medium-loamy soil of the stationary site (reclaimed lands of JSC «Moskovskoye» of Ryazan region), located in the floodplain of the Oka river, conducted by the Meshchersky branch of Vniigim, showed the presence and intensification of degradation changes in the soil. Thus, comparing the agrochemical indicators in the layer 0–20 cm, carried out in 1995, with the indicators of 2019, it should be noted a decrease in soil fertility. The decrease in soil quality was expressed in a decrease in the amount of mobile phosphorus by 37.6 %, mobile potassium by 53.3 %. Also, during this time there was a decrease in organic matter by 9.1 %, and an increase in soil acidity was 0.6 pH. As a result of such changes, soils lose ecological stability and become more vulnerable to adverse weather and negative anthropogenic impacts. In such a situation, advanced agricultural techniques should be actively used to obtain guaranteed, environmentally safe crop yields and restore the fertility of degraded reclaimed soils. In this regard, there is a need to develop innovative methods of fertility restoration of degraded alluvial soils in reclaimed lands using multi-component organic-mineral ameliorants. Meshchersky branch performs research work in addressing this issue.

scholarly journals Heavy Metal Content in Water of Resko Lake (North-West Poland)

2013 ◽  
Vol 13 ◽  
pp. 279-287 ◽  
Author(s):  
Piotr Daniszewski ◽  
Ryszard Konieczny
Keyword(s):  
Surface Water ◽  
Water Samples ◽  
Metal Content ◽  
Research Work ◽  
Average Concentration ◽  
Permissible Limit ◽  
Toxic Heavy Metals ◽  
Annual Average ◽  
North West ◽  
Annual Average Concentration

The present research work deals with the quantification of toxic heavy metals in the water samples collected from Lake of Resko (North-West Poland). While the annual average concentration of Cadmium was calculated as 0.34 ppm in 2008 of the year and 0.28 ppm in 2009 of the year. The values obtained were found to be below the permissible limit of 2.0 ppm set for inland surface water. While the annual average concentration of Chromium was calculated as 1,75 ppm in 2008 of the year and 1.97 ppm in 2009 of the year. Which was very much above the permissible limit of 0.1 ppm set for inland surface water. The observed annual average concentration of Copper in the water was 0.05 ppm in 2008 of the year and 0.06 ppm in 2009 of the year, which was below the permissible limit of 3.0 ppm set for inland surface water. While the annual average concentration of Mercury was calculated as 0.03 ppm in 2008 of the year and 0.04 ppm in 2009 of the year, which was very much above the maximum limit of 0.01 ppm set for inland surface water. The annual average concentration of Nickel in the water samples was observed to be 2.07 ppm in 2008 of the year and 2.09 ppm in 2009 of the year, which is close to the limit of 3.0 ppm set for inland surface water. The annual average concentration of Pb in the water samples was observed to be 0.07 ppm in 2008 of the year and 0.05 ppm in 2009 of the year, which is above the permissible limit of 0.1 ppm set for inland surface water. The results of the present investigation indicate that the annual average concentration of Zn in water samples was 3.02 ppm in 2008 of the year and 2.74 ppm in 2009 of the year, which is above the permissible limit of 5.0 ppm set for inland surface water.

Bioecological features of the species of Ligustrum L. in conditions of Absheron and use in landscaping

2021 ◽  
Vol 08 (03) ◽  
pp. 4-7
Author(s):  
Tofiq Sadıq oğlu Məmmədov ◽  
◽  
Şəlalə Adil qızı Gülməmmədova ◽  
Leyla Fərman qızı Mustafayeva ◽  
◽  
...  
Keyword(s):  
Key Words ◽  
Ornamental Plants ◽  
Research Work

In the research work carried out at the Institute of Dendrology of ANAS, species of Ligustrum L. were introduced into the in conditions of Absheron, their bioecological features were studied and various forms of compositions were created using these plants in the Arboretum. It was revealed that introduced ornamental plants adapt well under Absheron conditions and are recommended for use in creating various forms of compositions in parks and gardens. Key words: ligustrum, compositions, plant, ornamental, park

La fruizione dei beni culturali come contributo del turismo allo sviluppo delle cittŕ d'arte

2009 ◽  
pp. 59-72
Author(s):  
Marco Martinelli
Keyword(s):  
Cultural Heritage ◽  
Key Words ◽  
Research Work ◽  
Cultural Development ◽  
The Self ◽  
Modern City

- The author examines the ways in which cultural heritage is used in the art cities. The evidence from research work on the characteristics of visitors of four museums of Rome are shown. Two types emerge: the mass tourist "with a collective look" and the self-directed "romantic" tourist. Tourism in art cities enhances the cultural development of cities.Key words: tourism, art city, post modern, city.

scholarly journals A Hydrologic Landscapes Perspective on Groundwater Connectivity of Depressional Wetlands

Water ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 50 ◽  
Author(s):  
Brian P. Neff ◽  
Donald O. Rosenberry ◽  
Scott G. Leibowitz ◽  
Dave M. Mushet ◽  
Heather E. Golden ◽  
...  
Keyword(s):  
Surface Water ◽  
Water Table ◽  
Conceptual Knowledge ◽  
Groundwater Discharge ◽  
Depressional Wetlands ◽  
Hydrologic Connectivity ◽  
Site Specific ◽  
Depressional Wetland ◽  
Resource Managers ◽  
Flow Through

Research into processes governing the hydrologic connectivity of depressional wetlands has advanced rapidly in recent years. Nevertheless, a need persists for broadly applicable, non-site-specific guidance to facilitate further research. Here, we explicitly use the hydrologic landscapes theoretical framework to develop broadly applicable conceptual knowledge of depressional-wetland hydrologic connectivity. We used a numerical model to simulate the groundwater flow through five generic hydrologic landscapes. Next, we inserted depressional wetlands into the generic landscapes and repeated the modeling exercise. The results strongly characterize groundwater connectivity from uplands to lowlands as being predominantly indirect. Groundwater flowed from uplands and most of it was discharged to the surface at a concave-upward break in slope, possibly continuing as surface water to lowlands. Additionally, we found that groundwater connectivity of the depressional wetlands was primarily determined by the slope of the adjacent water table. However, we identified certain arrangements of landforms that caused the water table to fall sharply and not follow the surface contour. Finally, we synthesize our findings and provide guidance to practitioners and resource managers regarding the management significance of indirect groundwater discharge and the effect of depressional wetland groundwater connectivity on pond permanence and connectivity.

scholarly journals Assessment of the Quality of Soil and Groundwater of the Agricultural Area of Sidi Yahya Region, Morocco

2020 ◽  
Vol 150 ◽  
pp. 01001
Author(s):  
M. Lahmar ◽  
N. El Khodrani ◽  
S. Omrania ◽  
H. Dakak ◽  
R. Moussadek ◽  
...  
Keyword(s):  
Water Table ◽  
Land Management ◽  
Research Work ◽  
Sustainable Use ◽  
Soil Samples ◽  
Agricultural Area ◽  
Soil Parameters ◽  
The Impact ◽  
Soil And Water

The Gharb plain is the largest agricultural area in Morocco. It is characterized by fertile soils and the availability of water either from surface or groundwater which allowed intensive agriculture. The aim of this research work is to study the impact of this land management on the quality of water and soil. The study was done for the irrigated perimeter of Sidi Yahya belonging to the province of Sidi Slimane, Gharb (Morocco). Depth of water table and water pH were measured in situ while water and soil samples were collected and brought to the laboratory for their physico-chemical analyses. Sampling of 33water wells and soil samples, from six different zones, was done between May and October 2018. Analysis of variance (ANOVA) was used to check if mean water and soil parameters differed between zones. The results showed that the minimal and maximal water table depth were 6 and 96 m, respectively. Also, slightly more than half of the wells (51.5%) were inadequate for irrigation since they were either highly or extremely saline. Furthermore, soils were poor to moderately poor in organic matter but very rich in potassium and the phosphorus content was highly variable. Based on the statistical analysis, it is clear that the six zones had significantly different means for CaCO3, pH, OM, and exchangeable sodium percentage. Soil degradation like pollution and salinization may occur in this region if poor quality water is used for irrigation and if land is mismanaged. This research work can be considered as a first step towards a program for monitoring the quality of soil and water for adapting the land management with the final objective of securing high productivity and sustainable use of soil and water resources.

Mineralogical and textural evolution of the economic manganese mineralisation in western Rhodope massif, N. Greece

1991 ◽  
Vol 55 (380) ◽  
pp. 423-434 ◽  
Author(s):  
M. K. Nimfopoulos ◽  
R. A. D. Pattrick
Keyword(s):  
Surface Water ◽  
Water Table ◽  
Fault Zones ◽  
Hydrothermal Fluids ◽  
Mineral Paragenesis ◽  
Textural Evolution ◽  
Mn Oxide ◽  
Alkaline Earths ◽  
Mn Oxides ◽  
Hydrothermal Veins

AbstractThe western Rhodope massif contains a significant number of ‘battery grade’ Mn-oxide deposits which are best developed in the area near Kato Nevrokopi, Drama district, N. Greece. Economic Mn-oxide ore concentrations are confined to fault zones and related karsts in marbles. The mineralisation has formed by weathering of hydrothermal veins that were genetically related to Oligocene magmatism.At Kato Nevrokopi, progressive and continuous weathering of primary, hydrothermal veins of rhodochrosite, mixed sulphide, quartz and ‘black calcite’ (calcite and todorokite) has resulted in the formation of the assemblage MnO-gel-(amorphous Mn-oxide)-todorokite-azurite-goethite-cerussite in the veins and the assemblage MnO-gel-nsutite-chalcophanite-birnessite-cryptomelane-pyrolusite and malachite and amorphous Fe-oxides in karstic cavities.The fs2 and fO2 of the hydrothermal fluids increased with time. The breakdown of the hypogene Mn-carbonate was aided by the production of an acidic fluid due to the oxidation of sulphides. Precipitation of the supergene ores was caused by neutralisation of the fluids due to reaction with the host marble and to mixing of relatively reduced fluids with oxygenated surface water in a fluctuation water table regime. Zinc was also mobile during weathering and became concentrated in the intermediate Mn-oxides, effectively stabilising their structures. The mineral paragenesis records the progressive oxidation of the ore and the appearance of less hydrated Mn-oxides, low in alkalis and alkaline earths.

Sign in / Sign up

Export Citation Format

Share Document