scholarly journals Analysis of flood propagation and its impact on Negeri Lima Village due to the failure of Way Ela Dam

2019 ◽  
Vol 270 ◽  
pp. 04011
Author(s):  
Bagus Pramono Yakti ◽  
Mohammad Bagus Adityawan ◽  
Iwan Kridasantausa Hadihardaja ◽  
Yadi Suryadi ◽  
Joko Nugroho ◽  
...  
Keyword(s):  
Numerical Model ◽  
Overland Flow ◽  
Extreme Rainfall ◽  
Disaster Risk ◽  
Small Scale ◽  
Two Dimensional ◽  
High Rainfall ◽  
Public Facilities ◽  
Natural Dam ◽  
The Government

Way Ela dam is a dam to be built in the Negeri Lima village. In the negeri lima village there was also a dam that formed naturally by landslide due to high rainfall on 13 July 2012. A year after it was formed, on 25 July 2013 flooding occurred due to an extreme rainfall that caused the failure of the natural dam. The event of the failure on 2012 generated flood that severely damaged houses and various public facilities to negeri lima village down toward to the coast. As a result of this event, a small-scale reservoir is formed. The Government plans to utilize the established reservoir to build the new Way Ela Dam. This study was conducted to analyze floods with scenarios in the event of a failure in the new Way Ela Dam. The overland flow is simulate with two dimensional numerical model HEC-RAS v.5. Determining strategies for mitigation needs to be assessed comprehensively, by simulating disaster scenarios on the dam, analyzing the impacts and then planning recommendations for disaster risk. The results are expected to be a reference for mitigation plans for the new Way Ela Dam.

scholarly journals 2D Modeling of Flood Propagation due to the Failure of Way Ela Natural Dam

2018 ◽  
Vol 147 ◽  
pp. 03009 ◽  
Author(s):  
Bagus Pramono Yakti ◽  
Mohammad Bagus Adityawan ◽  
Mohammad Farid ◽  
Yadi Suryadi ◽  
Joko Nugroho ◽  
...  
Keyword(s):  
Arrival Time ◽  
Overland Flow ◽  
Secondary Data ◽  
Dam Break ◽  
Dam Failure ◽  
Propagation Modeling ◽  
Public Facilities ◽  
Flood Depth ◽  
Natural Dam ◽  
2D Numerical Model

A dam break induced-flood propagation modeling is needed to reduce the losses of any potential dam failure. On the 25 July 2013, there was a dam break generated flood due to the failure of Way Ela Natural Dam that severely damaged houses and various public facilities. This study simulated the flooding induced by the failure of Way Ela Natural Dam. A two-dimensional (2D) numerical model, HEC-RAS v.5, is used to simulate the overland flow. The dam failure itself is simulated using HECHMSv.4. The results of this study, the flood inundation, flood depth, and flood arrival time are verified by using available secondary data. These informations are very important to propose mitigation plans with respect to possible dam break in the future.

Two-dimensional numerical modeling of sediment transport in a dam reservoir to analyze the feasibility of a water intake

2019 ◽  
Vol 30 (01) ◽  
pp. 1950003 ◽  
Author(s):  
My. M. Charafi
Keyword(s):  
Sediment Transport ◽  
Numerical Model ◽  
Water Intake ◽  
Extreme Rainfall ◽  
Two Dimensional ◽  
Dam Reservoir ◽  
Extreme Rainfall Events ◽  
Rainfall Events ◽  
Saint Venant Equations ◽  
Drinking Water Production

The present work is related to the study of a water intake projected into a dam reservoir, located in northern Morocco. The object sought is to examine the natural conditions surrounding a water intake and their possible repercussions on its operation. Thus, a two-dimensional numerical model is developed to simulate the sediment transport in a reservoir dam. The developed model consists of hydrodynamic module based on the Saint–Venant equations and sediment transport module based on the mass-balance equation, where there are resolved by a MacCormack numerical scheme and upwind scheme, respectively. The analysis using the numerical model has made it possible to predict the shutdown periods of the drinking water production station with respect to the rate of suspended solids (SS) for extreme rainfall events.

Simulating Climate Change Impacts on the Recharge Dynamics of a Mediterranean Karst Aquifer

2020 ◽  
Author(s):  
Lysander Bresinsky ◽  
Jannes Kordilla ◽  
Emanuel Thoenes ◽  
Thibault Würsch ◽  
Irina Engelhardt ◽  
...  
Keyword(s):  
High Performance ◽  
Overland Flow ◽  
Karst Aquifer ◽  
Extreme Rainfall ◽  
Small Scale ◽  
Surface Zone ◽  
Dry Valleys ◽  
Flow Through ◽  
Infiltration Excess ◽  
The Impact

<p><span>Integrated surface-subsurface flow models </span><span>solving the Richards’ equation </span><span>allow t</span><span>o simulate</span><span> flow within all compartments (e.g. vadose, phreatic and surface zone) and their reciprocal interaction, </span><span>and </span><span>provid</span><span>e</span><span> a useful tool to investigate the impact of climatic changes on infiltration dynamics. The Mediterranean karst aquifers are in particular prone to shifting climates, as a decrease in mean precipitation with increasing intensity and frequency of short-duration extreme rainfall, may have a significant impact on recharge dynamics and the overall water budget. Here, we use the finite element, distributed, multi-continuum flow simulator HydroGeoSphere (Aquanty, 2015) on a high-performance-computing platform to simulate infiltration and groundwater flow of the Western-Mountain-Aquifer (WMA) c</span><span>onsidering</span><span> chang</span><span>ing</span><span> hydrologic conditions. A thin soil cover and abundant exposed bare karstic carbonate rock compose the recharge area, providing efficient pathways </span><span>for</span><span> fast direct infiltration along karst features (e.g., sinkholes and dolines). The lowered total annual precipitation may not result in a decrease in recharge since the severity and frequency of individual rainfall storms are projected to increase. </span></p><p><span>To account for the duality of karst flow dynamics, both in the vadose and phreatic zones, with rapid flow through conduits and slow flow through the fractured rock matrix, we apply a double-continuum approach based on the volume-effective Richards’ equation with van Genuchten parameters. A 2-D friction-based overland flow continuum, coupled via a first-order exchange term to the subsurface, accounts for overland flow d</span><span>ue</span> <span>to</span><span> infiltration excess. This allows t</span><span>o represent</span><span> the partitioning of rainfall into diffuse and rapid direct recharge, e.g., along dry valleys or sinkholes. This modeling approach, therefore, accounts for complex spatially distributed infiltration characteristics of the rock-soil landscape, with focused recharge along karst features and transmission losses of ephemeral streams (wadis) under variable precipitation patterns.</span></p><p>To get a better understanding of the complex interaction dynamics of the surface and subsurface domain in a coupled unsaturated single- and dual-continuum model we carried out small-scale process-oriented studies. Two types of synthetic karst features, (1) a dry valley averaged from field data (i.e., Wadi Natuf) and (2) an analytical generalized doline, were investigated. Geometries close to natural systems, such as sub-catchments of the WMA, were implemented. Sensitivity studies reveal complex dependencies of domain properties on linear- and log-scales. However, the exchange parameters controlling the coupling between the subsurface continua are insensitive.</p>

Women Welfare Measures Implemented During DMK Regime

Think India ◽  
2019 ◽  
Vol 22 (3) ◽  
pp. 772-779
Author(s):  
T.Vinsela Jeev
Keyword(s):  
Police Department ◽  
Small Scale ◽  
Economic Activities ◽  
The Poor ◽  
Small Scale Industry ◽  
Poor Women ◽  
The Government ◽  
Physically Challenged ◽  
Self Help Groups ◽  
School Books

During the DMK regime many welfare schemes for implemented for women especially. This schemes for developments for socio and economic activities for women. The poor women, widows, physically challenged were benefited their schemes. The government allotted lot of sewing machines, Free school books, Midday meal schemes, Small scale Industry, Self help groups, Boating supply for fisher mans and many women teachers were appointed in Elementary school, Middle school, High schools. Women’s were appointed in police Department and also so many schemes for the development of socio and economic condition of the poor women people.

GST - Sway On Small Scale Industries

2019 ◽  
Vol 118 (10) ◽  
pp. 365-372
Author(s):  
Jayanti.G ◽  
Dr. V.Selvam
Keyword(s):  
State Government ◽  
Tax Reform ◽  
Small Scale ◽  
Tax Revenue ◽  
Tax System ◽  
Goods And Services ◽  
Single Tax ◽  
The People ◽  
Indirect Taxes ◽  
The Government

India being a democratic and republic country, has witnessed the biggest indirect tax reform after much exploration, GST bill roll out on 1 April 2017.  The concept of this reform is for a unified country-wide tax reform system.  Enterprises particularly SMEs are caught in a state of instability.  Several taxes such s excise, service tax etc., have been subsumed with a single tax structure. it is the responsibilities of both centre and state government to shoulder the important responsibility to cater the needs of the people and the nation as a whole.  The main basis of income to the government is through levy of taxes.  To meet the so called socio-economic needs and economic growth, taxes are considered as a main source of revenue for the government.  As per Wikipedia “A tax is a mandatory financial charge or some other type of levy imposed upon tax payer by the government in order to fund various public expenditure”   it is said that tax payment is mandatory, failure to pay such taxes will be punishable under the law.   The Indian tax system is classified as direct and indirect tax.   The indirect taxes are levied on purchase, sale, and manufacture of goods and provision of service.  The indirect tax on goods and services increases its price, this can lead to inflationary trend.  Contribution of indirect taxes to total tax revenue is more than 50% in India, therefore, indirect tax is considered as a major source of tax revenue for the government, which in turn is one of source for GDP growth.  Though indirect tax is a major source of revenue, it had lot of hassles.  To overcome the major issues of indirect tax system the government of India subsumed most of the indirect tax which in turn gave birth to the concept called Goods and Service Tax.

A Study On Challenges Faced By Small Scale Entrepreneurship Management In Tirunelveli City

2019 ◽  
Vol 118 (10) ◽  
pp. 244-251
Author(s):  
Dr. V. Sangeetha ◽  
S.Selva Kumari ◽  
M. Deena ◽  
K. Chandra
Keyword(s):  
First Generation ◽  
Central Government ◽  
New Products ◽  
Small Scale ◽  
The Government

In modern days entrepreneurship are increased and they were faced a lot of issues and challenges. Entrepreneur is one who has creative and innovative ideas for a business. The entrepreneurship reduces the unemployment. The Government was encouraged the Entrepreneurs and give award for them. Main objective for these awards is to recognize the business and business man and improve the marketability introduced new products for a market. The Central Government issues award for entrepreneurs who have a age of 40 years and they must be first generation entrepreneurs. They were holding a 51% of equity and ownership of business and then women must individually own 75% or more of the enterprise.

Economic Impact of Sugarcane Variety CO-86032 on Farmers Economy in Maharashtra

2020 ◽  
pp. 354-359
Keyword(s):  
Economic Impact ◽  
Production Technology ◽  
Economic Benefit ◽  
Extreme Rainfall ◽  
Sugar Recovery ◽  
Sugarcane Variety ◽  
Public Research ◽  
Productivity Improvement ◽  
Farming Community ◽  
The Government

The area under sugarcane in Maharashtra state was found to be more stable and consistent rather than production and productivity. It may be due to the F & RP of sugarcane. In the year 1996, MPKV, Rahuri released a promising variety of sugarcane viz., Co-86032 which is very famous in farming community due to its hardiness, sugar recovery (percent) and resistance to the extreme rainfall as well as deficit rainfall. The total economic worthiness of university released sugarcane variety Co-86032(production technology) over other competing varieties of sugarcane in the Maharashtra was `51449.14per ha. The sugarcane growers in Maharashtra state earned net economic benefit of `11059.40 crores from improved sugarcane variety Co-86032. Therefore, it is suggested that the Government should allocate substantial funds to public research in sugarcane for productivity improvement.

Investigation of two-dimensional nonstationary processes of outflow a gas-saturated liquid from axisymmetric vessels

2012 ◽  
Vol 9 (1) ◽  
pp. 47-52
Author(s):  
R.Kh. Bolotnova ◽  
V.A. Buzina
Keyword(s):  
Comparative Analysis ◽  
Numerical Model ◽  
Liquid Mixture ◽  
Phase Model ◽  
Test Problems ◽  
Two Dimensional ◽  
Nonstationary Processes ◽  
Saturated Liquid ◽  
Two Phase ◽  
One Dimensional

The two-dimensional and two-phase model of the gas-liquid mixture is constructed. The validity of numerical model realization is justified by using a comparative analysis of test problems solution with one-dimensional calculations. The regularities of gas-saturated liquid outflow from axisymmetric vessels for different geometries are established.

scholarly journals An Investigation of the Socio-Economic Benefits of Small-Scale Gold Mining in Malawi

Mining ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 19-34
Author(s):  
Tiyamike Haundi ◽  
Gift Tsokonombwe ◽  
Steven Ghambi ◽  
Theresa Mkandawire ◽  
Ansley Kasambara
Keyword(s):  
Gold Mining ◽  
Indigenous Communities ◽  
Economic Benefits ◽  
Gold Rush ◽  
Basic Knowledge ◽  
Small Scale ◽  
Low Literacy ◽  
Policy Makers ◽  
Key Stakeholders ◽  
The Government

In the recent years, there has been a surge in artisanal and small-scale gold mining (ASGM) in various districts of Malawi. Reports of a gold rush have emerged in various districts, including Mangochi, Lilongwe, Balaka, and lately in Kasungu. There has been persistence by many indigenous communities participating in ASGM activities, yet little is being done by the government to formalize and support the sub-sector. The purpose of this study was to investigate the benefits of artisanal small-scale gold mining in Malawi and expose the shortfalls so that key stakeholders and policy makers are well informed. A quantitative approach which used semi-structured questionnaires was used and the data was analyzed using Microsoft excel and Statistical Packages for the Social Sciences (SPSS). The study shows that ASGM is characterized by people with low literacy levels, who use traditional tools (low-tech) and use methods fueled by lack of capital, and deficiency of basic knowledge of mining and geology. The study found that the government could achieve substantial socio-economic development from the sector by: (1) revising the current artisanal and small-scale mining (ASM) legislation so that it embraces the customary practices whilst safeguarding the environment and improving the tax collection base; (2) providing support in form of mining related training and education to these communities; (3) leading in transfer of modern technologies for improved extraction; (4) supporting ASM cooperatives in securing credit facilities from financial institutions; and (5) closing the existing knowledge gap for ASM related issues through introduction of mining desk officers in district councils.

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