Design Of Mining System Research Articles

Simulation Technology Development for Dynamic Analysis of Mechanical System in Deep-Seabed Integrated Mining System Using Multibody Dynamics

The deep-seabed mining system for mining resources consists of a mining vessel, lifting riser, lifting pump, buffer system, flexible riser, and mining robot. Because this system is exposed to extreme environments such as fluid resistance, high water pressure, and deep water, a considerable amount of time and cost is consumed in the design and test evaluation of equipment. To tackle these problems, the deep-seabed mining system in an extreme environment requires simulation-based technology. In particular, due to the large movement caused by marine energy, vibration caused by the operation of the mechanical system, and driving resistance of mining robot by the subsea soft soil, it is very important in the mining system design to analyze the dynamic effects of the various elements that constitute the deep-seabed mining system in a single integrated environment. This paper introduces the development of an integrated dynamic simulation method for deep-seabed mining systems and discusses the results.

Implementation of Web Log Mining Device Under Apriori Algorithm Improvement and Confidence Formula Optimization

With the increasing number of internet users, a large number of network alarm information increases, resulting in the increasing pressure of SMS gateway and frequent alarm delay. Therefore, in order to effectively improve the above problems, the article is based on the improved Apriori algorithm and confidence formula, points and grabbing module, model training module and the test evaluation module device, three steps to realize the web log mining and mining system design for the data acquisition module, data preprocessing module, mining model building blocks, mining model checking module and mining model analysis and evaluation module five modules. Finally, the Python program was used to verify the test data of about two million pieces of original alarm data in a company's network management database for a consecutive month. The verification results show that the design of this paper has greatly reduced the number of original alarms and completed the merging of related rules.

User Centered and Privacy-Driven Process Mining System Design

User Centered and Privacy-Driven Process Mining System Design

The Application of the Maximum and Minimum Ant System Neural Network in the Calculation of Hydraulic Gradient for Paste Pipeline Transportation

Hydraulic gradient is an important parameter in the design of paste underground treatment system, which determines the energy consumption and operation cost. In order to grasp the accurate result of hydraulic gradient, we apply the MMAS-BP neural network to the calculation of hydraulic gradient, clarify the basic idea and establish the prediction model of hydraulic gradient. The practical application shows that the model has the fastest convergence and global nature of the maximum and minimum ant colony algorithm, and has strong mapping effect of BP neural network. The result fully meets the practical application needs, and provides an important method for paste filling mining system design.

Specific Features of Iron Ore Mining in Gornaya Shoria

The complex geological conditions and geomechanical behavior of rock mass at the Tashtagol, Sheregesh and Kaz deposits induce geodynamic events during transition to deeper level mining. Mining advance from the higher stress concentration areas in the hanging wall of a fault towards the lower stress concentration areas contributes to the reduction in rockburst hazard. The use of the self-propelling equipment provides larger volume of preparatory driving per 1000 t of ore production by 10–20% as compared with the portable equipment. The mechanism of rock mass movements in deeper level stoping is revealed. Increased mining depth and high strength of enclosing rocks are favorable for starting extraction of ore reserves left in pillars. The combination of these factors and the efficient mining system design enable mining of blind ore bodies without backfill and allows extraction of ore reserves from pillars under the rivers and ground surface infrastructure.

Study on Hydraulic Transport of Large Solid Particles in Inclined Pipes for Subsea Mining

For subsea mining, the prediction of pressure loss due to the hydraulic transport of solid particles in the flexible pipe to connect the mining tool and the lifting system is important for the design of mining system. The configuration of the flexible pipe is expected to have an inclined part. In the present paper, the authors developed a mathematical model to predict the pressure loss in inclined pipes. The total pressure loss is expressed by the summation of the loss due to a liquid single-phase flow and the additional loss due to the existence of solid particles. The additional pressure loss can be divided into the variation in static pressure due to the existence of solid particles, the loss due to the particle-to-pipe wall friction and collisions, and the loss due to the particle-to-particle collisions. The empirical formula in horizontal pipes proposed by the other researchers was applied to the model of the last two losses. Furthermore, we carried out the experiment on hydraulic transport of solid particles in a pipe. In the experiment, alumina beads, glass beads, and gravel were used as the solid particles, and the inclination angles of the pipe were varied to investigate the effect of the pipe inclination on the pressure loss. The calculated pressure loss using the model was compared with the experimental data. As the results of the comparison, it was confirmed that the developed model could be applied to the prediction of the pressure loss in inclined pipes.

Mines Systems Safety Improvement Using an Integrated Event Tree and Fault Tree Analysis

Mines systems such as ventilation system, strata support system, flame proof safety equipment, are exposed to dynamic operational conditions such as stress, humidity, dust, temperature, etc., and safety improvement of such systems can be done preferably during planning and design stage. However, the existing safety analysis methods do not handle the accident initiation and progression of mine systems explicitly. To bridge this gap, this paper presents an integrated Event Tree (ET) and Fault Tree (FT) approach for safety analysis and improvement of mine systems design. This approach includes ET and FT modeling coupled with redundancy allocation technique. In this method, a concept of top hazard probability is introduced for identifying system failure probability and redundancy is allocated to the system either at component or system level. A case study on mine methane explosion safety with two initiating events is performed. The results demonstrate that the presented method can reveal the accident scenarios and improve the safety of complex mine systems simultaneously.

Technological significance of internal dumping in open pit coal mining in the Kemerovo Region

The article reports research findings in the area of open pit coal mining and substantiates alternative technologies based on new technological and organizational principles of open pit mining. Using the method of geometrical analysis of an open pit mine field and technological design of mining systems, stage-wise mining technologies have been developed for the case when mining front advance is changed. Such technologies ensure the improvement of a wide range of technical-and-economical and ecological performance of an open pit mine. The main flow charts of the mining sequences are interconnected with natural-technological groups of deposits, that influence cross-wise configuration of an open pit (ultimate contour) and structural characteristics (parameters) of working areas and generate geometrical type of an open pit field.

Simulation of Data Mining System Design in Database

The design of data mining system in database is researched. Vast amounts of information contained in the database, and the data show the diversity of characteristics, resulting in lower efficiency of data mining in database, which database brought greater difficulties to information query. To avoid these shortcomings, database performance optimization method based on cloud computing is proposed. The model of cloud computing data relationship is established to describe the connection between related data inthe database, thus providing the basis for data query. The load state of data nodes is calculated to enable rapid information inquiryin the database. Experimental results show that using this algorithm to optimize data inquiry in database can improve the efficiency of informationinquiry indatabase effectively.

Multiple-Feature Extracting Modules Based Leak Mining System Design

Over the years, human dependence on the Internet has increased dramatically. A large amount of information is placed on the Internet and retrieved from it daily, which makes web security in terms of online information a major concern. In recent years, the most problematic issues in web security have been e-mail address leakage and SQL injection attacks. There are many possible causes of information leakage, such as inadequate precautions during the programming process, which lead to the leakage of e-mail addresses entered online or insufficient protection of database information, a loophole that enables malicious users to steal online content. In this paper, we implement a crawler mining system that is equipped with SQL injection vulnerability detection, by means of an algorithm developed for the web crawler. In addition, we analyze portal sites of the governments of various countries or regions in order to investigate the information leaking status of each site. Subsequently, we analyze the database structure and content of each site, using the data collected. Thus, we make use of practical verification in order to focus on information security and privacy through black-box testing.

The earliest Pleistocene(?) Orange River fan-delta: an example of successful exploration delivery aided by applied Quaternary research in diamond placer sedimentology and palaeontology

Understanding how complex, highly variable sedimentary systems interact in time and space to release, transport and concentrate diamonds is the basis for successful exploration strategies for placer diamond deposits. De Beers’ and Namdeb's West Coast operations are widely involved in a variety of applied scientific research to unravel the complex interactions of Cainozoic fluvial, marine and aeolian systems that have contributed to the formation of the most spectacular gem diamond placer in the world. Geological models produced not only provide the basis for exploration target selection but also high-resolution orebody characterisation, a prerequisite for high confidence geostatistical evaluation, mining system design and mine planning. This paper draws on some of the many applied research projects that have contributed to De Beers’ and Namdeb's placer exploration success that continues to deliver new mineral resources on the West Coast. The history of the Orange River has, and continues to be intensively studied both on- and offshore as the principal conduit for diamond introduction to the continental margin. Use of the “Jago” submersible has introduced a new dimension to offshore sedimentological studies on the continental shelf through direct seafloor observation, which helped us to identify the latest deep-water offshore development—the late Pliocene/early Pleistocene Orange River fan-delta.

Geotechnical properties of the pacific seamount sediments measured by a gravity corer

Geotechnical properties and distribution characteristics of the Pacific seamount sediments, which coexist with cobalt‐rich manganese deposits (crusts and nodules), are essential data for the design of a seafloor mining system for the deposits. Samples were cored by a large‐diameter gravity corer during the research vessel Hakurei‐maru No. 2 survey cruises on the Pacific seamounts in 1991 and 1992. Various distribution characteristics of the sediments were studied. Analysis of the core samples showed that the geotechnical properties of the sediments become very important, in view of the new findings of debris‐flow‐like resedimentation of the cobalt‐rich manganese deposits and large shallow‐buried deposits beneath the sediments. These new findings are also very significant in terms of reserve reassessment Fundamental geotechnical properties of the sediments, such as size distribution, solid density, bulk density, water content, coefficient of internal friction, and cohesion are presented. Based on these data, their effects on the mining system design are also presented.

SASW repeated testing for rock mass changes and impact of reflections from discontinuities on acquired data : Nelson, PP; Masianos, M; Stokoe, KH Stacks, RE Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November 1991P119–130. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991

SASW repeated testing for rock mass changes and impact of reflections from discontinuities on acquired data : Nelson, PP; Masianos, M; Stokoe, KH Stacks, RE Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November 1991P119–130. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991

Characteristics of high density backfill : Jung, S J; Candia, M A; Prisbrey, K Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November 1991P161–168. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991

Characteristics of high density backfill : Jung, S J; Candia, M A; Prisbrey, K Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November 1991P161–168. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991

Automated shotcrete application : Jung, S J; Laux, R Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November 1991P153–160. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991

Automated shotcrete application : Jung, S J; Laux, R Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November 1991P153–160. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991

Development of an abrasive jet drill : Yao, J; Summers, D A; Blaine, J G Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November 1991P169–176. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991

Development of an abrasive jet drill : Yao, J; Summers, D A; Blaine, J G Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November 1991P169–176. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991

Ultra-close seam failure mechanisms : Akram, M; Haycocks, C; Haycocks, S G; Karmis, M Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November 1991P73–79. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991

Ultra-close seam failure mechanisms : Akram, M; Haycocks, C; Haycocks, S G; Karmis, M Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November 1991P73–79. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991

Hazard approach to multi-seam reserve determination : Fraher, R; Sellami, M; Haycocks, C; Karmis, M Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November 1991P81–89. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991

Hazard approach to multi-seam reserve determination : Fraher, R; Sellami, M; Haycocks, C; Karmis, M Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November 1991P81–89. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991

Swelling behaviour of coal shales in response to temperature and humidity changes : Huang, S L; Speck, R C; Wang, Z W Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November, 1991P59–68. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991

Swelling behaviour of coal shales in response to temperature and humidity changes : Huang, S L; Speck, R C; Wang, Z W Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November, 1991P59–68. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991

Analysis of longwall support system in a deep coal mine : Park, D W; Jiang, Y M Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November, 1991P49–58. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991

Analysis of longwall support system in a deep coal mine : Park, D W; Jiang, Y M Proc 9th Annual Workshop Generic Mineral Technology Center Mine Systems Design and Ground Control, Lexington, 10–12 November, 1991P49–58. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991