Delay effect of mud loading to the open pit design in terms of meeting 2018 – A coal production target case study of pit XYZ at South Kalimantan

Based on the 2018, there a mining plan, two temporary sumps, namely the ABC and BCD sumps. They located in a mining sequence pattern. These sumps required a mud loading process prior to mining the coal below the sequence. The mud loading process is loaded sequentialy. However, the problem occurs when the mud loading process in the ABC sump is delayed, and resulted only 42% of mud production. Such the delay resulted in hindering the mining sequence pattern which forced changes in plans, designs, and decrease of coal production. These condition led to study the cause, impact, and alternative solution of the delay during mud loading process. The method used in this study includes direct observations and data collection of working conditions, equipment capabilities, material properties, and operation timeline. In this study, the statistical analysis is used to determine the cause and effect of delayed mud loading process. A Minex Software is then used to simulate the alternative of redesign the mining sequence pattern. The study found that the delay in mud loading process is due to the external and internal factors, that result in underproduction of coal only 505,833 tons, and delayed of coal production around 64 days. An alternative that can be conducted is to change the direction progress to the area that has low stripping ratio. Factors that can hinder the progress are need to be considered for anticipating the plan distraction at mid-term-plan.

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A Push-Back Sequencing Model for Production Planning in Open-Pit Coal Mining

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.88-89.219 ◽

2011 ◽

Vol 88-89 ◽

pp. 219-224

Author(s):

Xiao Wei Gu ◽

Peng Fei Wang ◽

Qing Wang ◽

You Yi Zheng ◽

Jian Ping Liu ◽

...

Keyword(s):

Production Planning ◽

Coal Mine ◽

Open Pit ◽

Coal Production ◽

Production Schedule ◽

Coal Deposit ◽

Coal Seams ◽

Sequencing Method ◽

Mining Sequence ◽

Dynamic Sequencing

A dynamic sequencing method has been developed to simultaneously optimize the coal production rate, waste stripping rate, mining sequence, and mine life of an open-pit coal mine. The method first establishes a geological seam model of a bedded coal deposit which estimates the relevant attributes of coal seams at the center of each block on the X-Y plane. Based on the seam model, a sequence of “geologically optimum push-backs” is generated in the final pit. The geologically optimum push-backs are then put into a dynamic sequencing model and economically evaluated. The best production schedule which has the highest NPV is obtained, which indicates the best quantities of coal and waste to be mined in each year, the best zone to be mined in each year, and the best number of years to mine the entire final pit.

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Hydrogeological Decision Analysis : Sump Optimization at an Open Pit Mine

10.31227/osf.io/yueck ◽

2017 ◽

Author(s):

Aris Rinaldi

Keyword(s):

Surface Water ◽

Economic Value ◽

Mining Industry ◽

Open Pit Mine ◽

Open Pit ◽

Open Pit Mines ◽

Drainage Channels ◽

Pit Design

ABSTRACT Water is an aspect that is often becoming a problem in the mining industry. In a system of open pit mine, the water that comes from surface water and groundwater is collected into a temporary collecting pond which is commonly referred to as sump. This paper analyzes a case study of optimization of sump at an open pit coal mine in South Borneo.The design of sump often ignores the role of groundwater. It has quite an impact on the efficiency of the design of the sump and the number of pumps used during the dewatering process. The process of pumping on the open pit system considers the total amount of water that runs into the pond of water, not only surface water alone. Moreover, the interconnected drainage channels and culverts also play a role in the optimization of the open pit sump system.Analysis of hydrogeological decision has an enormous role in the sump optimization, including sump design, pump usage, and the total number of culverts on the system so that the open mine pit design, which has good technical and economic value, can be obtained.Keywords: mines hydrogeology, open pit mines, groundwater.

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Pengaruh Modal Sosial Terhadap Perkembangan Pariwisata di Kepulauan Riau

Talenta Conference Series Energy and Engineering (EE) ◽

10.32734/ee.v3i1.859 ◽

2020 ◽

Vol 3 (1) ◽

Author(s):

Nurul Nadjmi

Keyword(s):

Social Capital ◽

Qualitative Research ◽

System Approach ◽

Research Method ◽

Analytic Approach ◽

Community Groups ◽

Study Strategy ◽

Direct Observations ◽

Descriptive Qualitative

Kepulauan Riau merupakan provinsi yang terdiri dari beberapa pulau diantaranya Pulau Batam, Pulau Bintan dan Pulau Karimun. Modal sosial merupakan serangkaian nilai dan norma informal yang dimiliki oleh kelompok masyarat dalam membagun kerjasamanya. Lingkup penelitian pada pembahasan ini adalah terfokus pada pengaruh modal sosial terhadap perkembangan pariwisata di Kepulauan Riau dalam hal ini Pulau Batam, Pulau Bintan, dan Pulau Karimun. Metode penelitian yang digunakan dalam penelitian ini adalah penelitian deskriptif kualitatif. Penelitian ini dikondisikan sebagai penelitian kualitatif melalui strategi studi kasus. Sistem pendekatan yang digunakan juga merupakan pendekatan deskriptif analitik. Melakukan pengamatan langsung, mengumpulkan data-data kemudian menghubungkannya dengan kajian teori yang digunakan. Lokus penelitian ini terdapat di Kepulauan Riau dengan melihat pengaruh modal sosial pada perkembangan pariwisata di ketiga pulau yaitu Pulau Batam, Pulau Bintan dan Pulau Karimun. Berdasarkan hasil survey yang saya lakukan di Kepulauan Riau, terutama pada ketiga pulau yaitu Pulau Batam, Pulau Bintan, dan Pulau Karimun, dari ketiga pulau tersebut ternyata pada Pulau Karimun perkembangan pariwisatanya tidak terlalu berkembang karena masyarakat yang tidak menerima adanya wisatawan terutama wisatawan mancanegara. Riau Islands is a province consisting of several islands including Batam Island, Bintan Island and Karimun Island. Social capital is a set of informal values and norms that are owned by community groups in building cooperation. The scope of research in this discussion is focused on the influence of social capital on the development of tourism in the Riau Islands, in this case Batam Island, Bintan Island, and Karimun Island. The research method used in this research is descriptive qualitative research. This research is conditioned as qualitative research through a case study strategy. The system approach used is also a descriptive analytic approach. Make direct observations, collect data and then relate it to the study of the theories used. The locus of this research is in the Riau Islands by looking at the influence of social capital on the development of tourism in the three islands, namely Batam Island, Bintan Island and Karimun Island. Based on the results of a survey I conducted in the Riau Islands, especially on the three islands, namely Batam Island, Bintan Island, and Karimun Island, of the three islands, it turns out that on Karimun Island the development of tourism is not very developed because people do not accept tourists, especially foreign tourists.

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STRATEGI MENINGKATKAN LOYALITAS KONSUMEN MAKANAN KHAS KOTA CURUP KABUPATEN REJANG LEBONG

10.31219/osf.io/r5268 ◽

2019 ◽

Author(s):

Onsardi Onsardi

Keyword(s):

Swot Analysis ◽

Raw Materials ◽

External Factors ◽

Consumer Loyalty ◽

Internal Factors ◽

The Public ◽

Typical Food ◽

Internal And External Factors

The title of this study is the Strategy of Increasing Consumer Food Loyalty in CurupCity, Rejang Lebong Regency (Case Study in "Henvian" Typical Food Industry). Thisresearch is based on the importance of strategies in increasing business and consumerloyalty to products sold.Strategies to increase business and consumer loyalty can bedone with a SWOT analysis. Place of this research is the "Henvian" shop that sellstypical Rejang lebong food. The method used in this study is descriptive qualitative.Informants in this study were people who were considered to know for certain about theHENVIAN Specialty Food Store in Curup City, Rejang Lebong Regency. The dataanalysis technique used in this study is a SWOT analysis to determine the strengths,weaknesses, opportunities and threats in a typical Rejang Lebong food business.By using SWOT analysis techniques that consist of strengths (weakness), weaknesses(weakness), opportunities (opportnity) and threats (threath). The results of this studycan be concluded that the internal factors that are the strength of the marketing strategyare the quality of the product that is good at a price affordable to the public andtourists, service that is friendly and responsive to consumer needs, as well astechnological advancements that facilitate the promotion of business. Internal factorsthat are a weakness are often lack of stock, there are some products that do not meet thestandard packaging, the product shelf life is short, employees do not use uniforms.External factors that become opportunities are a fairly high economic community,abundant raw materials while external factors that are a threat are the manycompetitors, an unstable economy, the price of basic needs increases. Based on theresults of the SWOT analysis of internal and external factors, the strategy used is toimprove product quality by improving the appearance of packaging and quality ofcontent and quality of service by providing uniforms to employees and providingstandards of service to consumers. .Keywords: Strategy, Consumer Loyalty, SWOT

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The formation of the Egyptian Arabic dialect area

10.1093/oso/9780198701378.003.0003 ◽

2018 ◽

Author(s):

Peter Behnstedt ◽

Manfred Woidich

Keyword(s):

Mediterranean Coast ◽

External Factors ◽

Internal Factors ◽

Dialect Contact ◽

Historical Information ◽

Egyptian Arabic ◽

Transitional Area ◽

The Mediterranean

This chapter deals with the sedentary dialects of Egypt, excluding the bedouin dialects of Sinai and the Libyan bedouin dialects on the Mediterranean coast. It attempts to combine historical information on the settlement of Arabic tribes in Egypt with accounts of present-day Egyptian dialects and those of the regions from which those tribes came, initially Yemen and the Levant, later Hejaz, and then the Maghreb. The diversity of the Egyptian Arabic dialect area is partly explained by external factors, namely different layers of arabization over centuries. It is also explained by internal factors, namely dialect contact, which implies phenomena such as hyperdialectisms. Egypt is seen as a dialect area in its own right, but one that shows phenomena of a transitional area between the Arab East and West. A case study of Alexandria deals with dialect death. The role of substrata is discussed, but is considered negligible.

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Groundwater control in open-pit mine with grout curtain using modified lake mud: a case study in East China

Arabian Journal of Geosciences ◽

10.1007/s12517-021-07503-7 ◽

2021 ◽

Vol 14 (12) ◽

Author(s):

Shichong Yuan ◽

Guilei Han ◽

Yankun Liang

Keyword(s):

Grout Curtain ◽

Open Pit Mine ◽

Open Pit ◽

East China

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Multi-Criteria Analysis for the Selection of the Optimal Mining Design Solution—A Case Study on Quarry “Tambura”

Energies ◽

10.3390/en14113200 ◽

2021 ◽

Vol 14 (11) ◽

pp. 3200

Author(s):

Branimir Farkaš ◽

Ana Hrastov

Keyword(s):

Decision Making ◽

Multiple Criteria Decision Making ◽

Open Pit ◽

Design Solution ◽

Mine Design ◽

Promethee Ii ◽

Mining Design ◽

Quarry Mine ◽

Selection Of

Mining design is usually evaluated with different multiple-criteria decision-making (MCDM) methods when it comes to large open pit or underground ore mines, but it is not used on quarry sites. Since Croatia is mostly mining stone, the implementation of such methods in decision making of the quarry mine design is imperative but left out. In this paper, the PROMETHEE II and AHP decision-making methods are implemented on the quarry site to find out the best final quarry design contour. By implementing the MCDM methods, the best quarry model was chosen based on 22 different criteria parameters out of three final quarry designs. The chosen model is not only financially sound but also has the least environmental impact.

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