Mining Method Optimization of Gently Inclined and Soft Broken Complex Ore Body Based on AHP and TOPSIS: Taking Miao-Ling Gold Mine of China as an Example

2021 ◽  
Vol 13 (22) ◽  
pp. 12503
Author(s):  
Qinqiang Guo ◽  
Haoxuan Yu ◽  
Zhenyu Dan ◽  
Shuai Li
Keyword(s):  
Evaluation System ◽  
Comprehensive Evaluation ◽  
Economic Effects ◽  
Gold Mine ◽  
Mining Method ◽  
Analytic Hierarchy ◽  
Rock Stratum ◽  
Ore Body ◽  
Ore Bodies ◽  
Method Optimization

The gently inclined thin to medium thickness ore body under a weak rock stratum is one of the typical difficult bodies to mine. In order to solve the fuzziness, randomness, and uncertainty in the process of mining method optimization for such ore bodies, a multi-level, multi-factor, multi-objective, and multi-index comprehensive evaluation system involving technology, economy, construction, and safety was constructed by combining the analytic hierarchy process (AHP) and technique for order preference by similarity to ideal solution (TOPSIS). Taking the Miao-ling gold mine in China as an example, the AHP-TOPSIS comprehensive decision model of mining method optimization is established, the comprehensive superiority degrees of the four mining schemes are 67.57%, 45.07%, 56.07%, and 31.63%, and the upward horizontal drift backfill mining method is determined as the optimal scheme. The method is verified in the actual production of the mine, which not only ensures the safe production of the mine, but also achieves better technical and economic effects. The research results provide a reference for the optimization of mining methods for gently inclined and soft broken complex ore bodies at home and abroad.

scholarly journals Subjective Product Evaluation System Based on Kansei Engineering and Analytic Hierarchy Process

Symmetry ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1340 ◽  
Author(s):  
Yaxue Zuo ◽  
Zhenya Wang
Keyword(s):  
Evaluation System ◽  
Comprehensive Evaluation ◽  
Subjective Evaluation ◽  
Reliability And Validity ◽  
Objective Evaluation ◽  
Product Evaluation ◽  
Kansei Engineering ◽  
Analytic Hierarchy ◽  
Evaluation Indexes ◽  
Hierarchy Process

Product evaluation is very important for product improvement and development, and subjective product evaluation determines customer’s evaluation of products to some extent, so the purpose of this study is to establish a reasonable subjective product evaluation system. In this study, we comprehensively determine the evaluation indexes based on Kansei engineering (KE), establish an overall product evaluation system by using analytic hierarchy process (AHP), and establish the subjective product evaluation system by classifying the evaluation indexes in the overall product evaluation system into “objective evaluation index” and “subjective evaluation index”, removing the objective evaluation indexes, and retaining the subjective evaluation indexes. Additionally, we select some modern chairs as experimental samples to verify the reliability and validity of this subjective product evaluation system by means of questionnaires. The experimental results show that, in this subjective product evaluation system, the subjective evaluation of the product is positively correlated with the “favorite” level of the product in comprehensive evaluation, and negatively correlated with the “least favorite” level of the product in comprehensive evaluation, indicating that this subjective product evaluation system realizes a symmetry between subjective product evaluation and comprehensive product evaluation. Therefore, it can be concluded that this subjective product evaluation system based on KE and AHP proposed in this study has reliability and validity, and can be used for product evaluation to judge the popularity of products and enhance the competitiveness of products.

A Method of the Comprehensive Evaluation of Surface Integrity in Micro- and Nano-Machining

2007 ◽  
Author(s):  
Guicheng Wang ◽  
Chunyan Zhang ◽  
Hongjie Pei ◽  
Yunming Zhu ◽  
Chungen Shen ◽  
...  
Keyword(s):  
Surface Integrity ◽  
Evaluation System ◽  
Metal Cutting ◽  
Comprehensive Evaluation ◽  
Rapid Development ◽  
Analytic Hierarchy ◽  
Ultra Precision ◽  
Edge Quality ◽  
Hierarchy Process

The surface quality is always the crucial element of machined quality in precision ultra-precision metal cutting. A new concept that the surface integrity should include the edge quality of parts is put forward In this paper, the weight value of a series of characteristic parameters of surface integrity are calculated with using analytic hierarchy process, three basic methods of evaluating surface integrity are presented, and the comprehensive evaluation system has been formed which will theoretically play a great important role on rapid development in the precision machining.

Research of Mining Method for Difficult-to-Mine Ore Bodies in Deep Mine

2014 ◽  
Vol 962-965 ◽  
pp. 1041-1046
Author(s):  
Qi Fa Ge ◽  
Xue Sen Sun ◽  
Wei Gen Zhu ◽  
Qing Gang Chen
Keyword(s):  
In Situ Stress ◽  
Mining Method ◽  
Deep Mining ◽  
Deep Mine ◽  
Ore Body ◽  
High In Situ Stress ◽  
Ore Bodies ◽  
Large Panel ◽  
Back Filling

There are many problems such as depth, high in-situ stress, high ground temperature and rockburst proneness etc. in deep mining. And it is an acknowledged and urgent mining technical puzzle about mining method of gently inclined and medium-thick ore bodies. For such an ore body in West wing of Dongguashan copper mine, if we use traditional mining method, it is hard to conquer such difficulties as high in-situ stress, large open area in roof, removal of mined ore by gravity etc. The theory of “large panel and lower sublevel height” will be easy to solve such problems. This paper use numerical technology to analyze and compare the technical and economical effectiveness for different selected mining method and its structure. The sublevel (at a height of 12 m) open stoping with back-filling by extraction in two steps is quite suitable for ensuring safety, increasing efficiency, productivity and reclaiming resource. The selected method is feasible and well worth spread.

Comprehensive Evaluation of Wall Material Optimization Based on the Theory of Gray System and Wall Pressure

2012 ◽  
Vol 252 ◽  
pp. 193-197
Author(s):  
Xue Ying Bao ◽  
Shi Sheng Lin ◽  
Jin Ping Man ◽  
Qi Cai Wang
Keyword(s):  
Evaluation System ◽  
Comprehensive Evaluation ◽  
Wall Pressure ◽  
Wall Material ◽  
Functional Difference ◽  
Analytic Hierarchy ◽  
Gray System ◽  
Material Optimization ◽  
Material Evaluation ◽  
Hierarchy Process

According to the factor of the characteristics of the wall material, wall pressure, as well as the influence of the wall material, the article aims at the alternative wall material in view of the unobvious functional difference, and builds wall material evaluation system. Then based on the theory of gray system, the present article conducts a comprehensive quantitative and qualitative analysis by analytic hierarchy process, and optimize the best wall material so as to provide a certain reference for the designing and construction side in the optimization of wall material.

FAHP Based Comprehensive Evaluation System of Water Environment Security

2011 ◽  
Vol 183-185 ◽  
pp. 1486-1490
Author(s):  
Qian Qian Dai ◽  
Jun Liang Liu ◽  
Tie Jian Zhang
Keyword(s):  
Analytic Hierarchy Process ◽  
Evaluation System ◽  
Comprehensive Evaluation ◽  
Water Environment ◽  
Analytic Hierarchy ◽  
Scale Method ◽  
Comprehensive Evaluation System ◽  
Judgment Matrix ◽  
Hierarchy Process ◽  
Water Environment Security

The evaluation system of water environment security is improved by using fuzzy analytic hierarchy process (FAHP) in determining weights of various factors of the system. First, priority judgment matrix is FAHP uses three-scale method to construct and then fuzzy consistency judgment matrix is obtained. It overcomes many shortcomings of traditional AHP, such as the difficulty to scale when assigning weights, the need to conduct consistency testing, a large amount of calculation and low accuracy of calculation. It is effective and reasonable in the evaluation of water environment security.

scholarly journals An evaluation method for green logistics system design of agricultural products: A case study in Shandong province, China

2019 ◽  
Vol 11 (1) ◽  
pp. 168781401881687 ◽  
Author(s):  
Songyuan Ni ◽  
Yu Lin ◽  
Yongxing Li ◽  
Hui Shao ◽  
Shiguang Wang
Keyword(s):  
Analytic Hierarchy Process ◽  
Evaluation System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Theory ◽  
Agricultural Products ◽  
Green Logistics ◽  
Analytic Hierarchy ◽  
Fuzzy Transformation ◽  
Hierarchy Process

Recently, the environmental issue caused by logistics of agricultural products has attracted a great deal of attention. In order to solve the problem, much of work focuses on green logistics to decrease environmental pollution. However, the green logistics evaluation system of agricultural products is insufficient. Therefore, establishing a reasonable green logistics evaluation system for agricultural products plays a key role in the development of green agricultural products. In this work, domestic and international environmental factors which affect the development of the green logistics of agricultural products are analyzed based on reduction, reuse, and recycling principle of circular economy. In addition, a series of evaluation indicators for green logistics of agricultural products are developed. A fuzzy analytic hierarchy process method is proposed to make a comprehensive evaluation for green logistics of agricultural products based on evaluation indicators. The method combined analytic hierarchy process and fuzzy theory, where a fuzzy transformation operator is introduced. The proposed method is applied for decision-maker in view of knowledge management. In order to verify the applicability of approach, the approach is applied to green logistics of Shandong agricultural products.

scholarly journals A new refracturing candidate selection method for multi-fractured horizontal wells in tight oil reservoirs

2019 ◽  
Vol 16 (4) ◽  
pp. 789-800
Author(s):  
Jianchun Guo ◽  
Liang Tao ◽  
Yuxuan Liu ◽  
Na He ◽  
Xiaofeng Zhou
Keyword(s):  
Fuzzy Logic ◽  
Evaluation System ◽  
Comprehensive Evaluation ◽  
Horizontal Wells ◽  
Weight Coefficient ◽  
Quadrant Analysis ◽  
Reservoir Quality ◽  
Analytic Hierarchy ◽  
Parameter Evaluation ◽  
Fractured Horizontal Wells

Abstract Refracturing technology has been widely applied to increase the production rate of multi-fractured horizontal wells (MFHWs) and enhance ultimate recovery. However, due to the complicated relationships between various parameters, it is often difficult to select candidate wells for refracturing. A novel method combining analytic hierarchy process (AHP), grey relation analysis (GRA) and fuzzy logic was proposed in this study to evaluate refracturing potential of wells from reservoir quality and initial completion efficiency. First, based on the parameters of the constructed wells, several elements were chosen as appraisal factors. AHP was used to establish a multi-parameter evaluation system for refracturing treatment. Then, GRA was used to calculate the weight coefficient and sort out the main factors that influence fracturing result. Finally, GRA was coupled with fuzzy logic to determine the classification threshold of reservoir quality. A novel comprehensive evaluation score (CES) was proposed to determine the priority of the refracturing wells. The method was successfully applied to a tight oilfield in Northeast China and the optimum refracturing potential area was selected based on the reservoirs quality and completion efficiency by using quadrant analysis. Average daily oil production increased from 2.3 to 17.6 tons per day after refracturing treatment. The method can be used to identify refracturing candidates quickly and economically.

scholarly journals Construction and Case Study of Flexibility Evaluation System for Power Generation Enterprises in the Auxiliary Service Market

2019 ◽  
Vol 118 ◽  
pp. 02058
Author(s):  
Ying Le ◽  
Baozhong Zhou ◽  
Wenbin Zhu
Keyword(s):  
Power Generation ◽  
Evaluation System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Thermal Power ◽  
Fuzzy Comprehensive Evaluation ◽  
Renewable Energy Consumption ◽  
Analytic Hierarchy ◽  
Service Market ◽  
Effective Measure

At present, the flexible transformation of thermal power is an effective measure to solve the problem of renewable energy consumption. At the same time, the improvement of the electricity auxiliary service market makes the power generation enterprises improve their ability to provide auxiliary services through flexible transformation and obtain benefits while serving the power system. Therefore, how to construct the flexibility evaluation system of regional units according to the characteristics of the auxiliary service market in different regions is of great significance to power generation enterprises. In this paper, the flexibility evaluation system of the auxiliary market environment is designed. Analytic hierarchy process and fuzzy comprehensive evaluation method were used to determine the weight and final evaluation basis.

Evaluation the Quality of Air Passenger Services

2014 ◽  
Vol 971-973 ◽  
pp. 2329-2332
Author(s):  
Zhong Lv
Keyword(s):  
Service Quality ◽  
Evaluation System ◽  
Comprehensive Evaluation ◽  
Fuzzy Theory ◽  
Weight Vector ◽  
Service Level ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Analytic Hierarchy

In order to evaluate the quality of the air passenger service objectively and accurately, based on analyzing the characteristics of comprehensive evaluation of service level, and applied the theory of Maslow’s hierarchy of need, the evaluation index system of air passenger service quality has been built from six aspects, such as objective, economy, service, quickness, comfort and convenience. The evaluation index weight vector is determined by means of the improved analytic hierarchy process. The fuzzy theory is used for comprehensive evaluation, and the model is analyzed through example. The results show that the evaluation system can effectively reflect the level of air passenger transport service quality and reduce the influence of human factors.

Analysis of Water Resources Carrying Capacity in Xianyang City under the Background of the Xi'an - Xianyang Integration

2014 ◽  
Vol 675-677 ◽  
pp. 787-793
Author(s):  
Yan Li Wang ◽  
Rui Ping Zhou ◽  
Min Zhang ◽  
Min Ning Zhao
Keyword(s):  
Water Resources ◽  
Carrying Capacity ◽  
Evaluation System ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Supply And Demand ◽  
Analytic Hierarchy ◽  
Fuzzy Matrix ◽  
Water Resources Carrying Capacity ◽  
Xianyang City

In the construction plan of the Xi'an-Xianyang Integration, water resources carrying capacity (WRBC) plays an important role in construction planning. Establish a comprehensive evaluation model of water resources carrying capacity in Xianyang City. 10 indexes of 5 categories, which were selected the analysis of relevant indexes including socio-economic indexes, water supply and demand indicators and water quality indicators, etc., were used to composing evaluation system. Using Cluster Analysis, Analytic Hierarchy Process (AHP) and Fuzzy Matrix. The sum of insecurity and less security coefficient of Xianyang City Water Resources Carrying Capacity is at about 0.7. The sum of more security and security coefficient is at about 0.3. And the safety coefficient of Water Resources Carrying Capacity in Xianyang City shows increasing trend. In Xi'an-Xianyang integration, through economic development, focusing on the construction of water and water pollution control, water resources carrying capacity is expected to increase in Xianyang City.

Sign in / Sign up

Export Citation Format

Share Document