Opencast Mining Technology

Slope stability analysis based on limit equilibrium method in open-pit mine

WANG Hai, WANG Moshu, LI Wei, DONG Junting, MA Jiwei

2016, 31(6): 1-3.

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Abstract: The dumping machine head position subsides in Huolinhe South Open-pit Coal Mine west 4th dump, and dump top appears a large number of cracks. The mine formulates a series of measures to governance subsidence problems in west 4th dump, through the limit equilibrium method to evaluate safety measures, and determines the slope stability of landslide position in west 4th dump after governance.

Necessity of ground production system extension and reconstruction in Shengli West No.1 Open-pit Mine

LIU Chao

2016, 31(6): 4-8.

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Abstract：Taking Shengli West No.1 Open-pit Mine extension and reconstruction as background, the article adopts the economic effective method to compare the various schemes of new coal system, crusher station shift engineering. According to the principle of process simplification, functional diversification, investment minimization, the author makes a detailed description on two sets of system process selection and completion process.

Analysis and development trend of mining technology influencing factors in Open-pit Coal Mine

WANG Zhigang, CHEN Xingping

2016, 31(6): 9-12.

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Abstract：Through analyzing the influencing factors of mining techniques in open-pit coal mine, the author predicts the new characteristics and development direction of open-pit mining technology. The mine researches the key factors and equipment development in advanced open-pit mining process, which has important significance on open-pit mining discipline construction and open-pit mining design theory, mining technology and production practice.

Study on floodway transference in Weijiamao Open-pit Mine

HAN Yichao, ZHANG Yonggui

2016, 31(6): 13-16.

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Abstract: Combining the actual geological conditions and mining status in Weijiamao Open-pit Mine, the author calculated groundwater inflow, displacement, and designed floodway section size, floodway section parameters, floodway turning radius, floodway profile and floodway position, finally completed the floodway arrangement, which had important significance for mining and economic benefit in Weijiamao Open-pit Mine second mining area.

Mining boundary and mining process adjustment in Anjialing Open-pit Mine

ZHANG Gen

2016, 31(6): 17-20.

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Abstract: According to residual resources stripping ratio analysis and design specification requirements, Anjialing Open-pit Mine adjusts the open-pit mining boundary and plans the mining process, and presents the south expansion mining scheme and directly advancing mining scheme. Through the comprehensive analysis of production transportation distance, ascension and production cost, the article recommends adopting the south expansion mining scheme in Anjialing Open-pit Mine.

Analysis on mining technology program in Thar Open-pit Coal Mine

CAI Zhongchao

2016, 31(6): 21-24.

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Abstract： This article summarizes the geological conditions of Thar Open-pit Mine, and analyzes several mining technology which may be used by the open-pit mine. Combining with the actual construction conditions of the open-pit mine, the author ultimately determines the feasible and rational mining technology.

Research on mining continuous process and key equipments of scraper in Open-Pit Mine

LIANG Yuanyuan, SONG Bo

2016, 31(6): 25-27.

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Abstract：This article introduced the continuous mining process which took scraper as the main mining equipment, and introduced technological process and mining methods and the structure and function of self-propelled conveyor and tower conveyor in the key equipment working face during the process, which provided the new continuous mining technology and equipment for small and medium-sized open-pit mines.

Research on mining process in Yimin No.3 Open-pit Mine

YANG Honghai, JIANG Wen, SI Guobin, GAO Nan

2016, 31(6): 28-31.

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Abstract: In order to further reduce the cost of coal production and improve the profitability of project, this article compares and analyzes the wheel bucket continuous process and semi-continuous process in the two aspects of technology and economy, finally recommends that coal mining technology in No.3 Open-pit Mine adopts the wheel bucket continuous process.

Optimization on dumping way and process of dumping machine in Baiyinhua No.3 Open-pit Mine

LV Kuan, LI Jingguo, WANG Shubing

2016, 31(6): 32-34.

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Abstract: In order to make the stripping semi-continuous system smoothly and orderly operate and ensure the dumping machine to develop its operating efficiency and operating mode under the current conditions of dump, combining with the actual operation parameters of dumping machine, the mine optimizes the dumping way and obtains the optimal solution of pre-dumping machine operation mode and operating process.

Research on bench delamination and mining method under the affect of residual water

LI Zhiqiang

2016, 31(6): 35-37.

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Abstract：The article studied the mining process of residual water bench in open-pit mine. Taking Yimin Open-pit Mine as example, through try and optimization of residual water bench mining in east slope, the author obtains general rules of mining layer based on aquifer distribution. Through researching shovel mining east slope bench process in Yimin Open-pit Mine, the author summarizes a set of effective mining way of bench.

Multiple free surface delay subsection differential vibration reduction blasting technique

GUO Qingchuan, WANG Jianxin

2016, 31(6): 38-40.

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Abstract: Through rock stratum spread, seismic wave causes surface or rock mass vibration, which results in different degrees damage of buildings and slope. In the process of open-pit stripping blasting, the seismic effect caused by Nalinmiao disaster control engineering brings inconvenience to residents living. Therefore, the article presents shock absorption blasting technique.

Economic analysis of leaving ditch height between mining areas in adjacent open-pit mines

ZHANG Ding, LUO Huaiting, LIU Yu, XU Kun

2016, 31(6): 41-45.

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Abstract： Combining with the production situation of Heidaigou and Haerwusu Open-pit Mines mines，the author establishes the mathematical models that calculate the economic leaving ditch height between two mining areas, determines the key factors that affect the leaving ditch height between two mining areas, and calculates the critical values of the key factor as reference data for the production and management of two mines.

Construction method optimization in the landslide treatment of open-pit coal mine

XU Guiwa

2016, 31(6): 46-48.

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Abstract: Taking Heishan Open-pit Coal Mine landslide for example, the author analyzes the slope stability, determines the landslide treatment measure, and optimizes the construction method. Calculation analysis shows that the method is feasible, which has important guiding significance for open-pit mine production.

Selection of first mining area and initial slotting position in oil shale open-pit mine

SUN Xin

2016, 31(6): 49-52.

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Abstract: The article lists two schemes of initial slotting position according to the amount and oil rate of each ore body, calculates and compares with the terrain condition, the construction quantity, the initial stripping ratio of two schemes, and finally determines initial slotting position and mining sequence of first mining area.

Calculation research on skirt board length of belt conveyor

ZHOU Qi

2016, 31(6): 53-55.

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Abstract: Through analyzing the moving and force of material in skirt board, the article presents how to determine the calculation methods of skirt board length, which provides a theoretical reference for designing the skirt board length of belt conveyor.

Application of lubricating grease test in the fault diagnosis of mining equipment

ZHANG Jing

2016, 31(6): 56-58.

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Abstract: The operation efficiency and service life of mining machinery equipment are closely related to grease effectiveness. The article focuses on the physical and chemical properties of lubricating grease, and introduces the application of lubricating grease in the fault diagnosis of mining equipment.

Discussion on water supply system information transformation design scheme

BIAN Mingming, LI Jiajian, GUO Xiuping

2016, 31(6): 59-62.

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Abstract: Based on information technology, the article analyzes the present situation and existing problems of water supply system, and presents the specific information transformation scheme, which is a kind of exploration for water resources utilization and management pattern.

Application of multi thread technology in data acquisition of truck dispatching system

HE Shuai

2016, 31(6): 63-65.

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Abstract: With the development of truck dispatching system, the real-time performance of data acquisition is higher and higher. This paper discusses the function of data acquisition and the application of multi thread technology in data acquisition system. This technology solves the problem of data processing. The accuracy of the data acquisition in the truck dispatching system is significant and the application effect is obviously.

Research on maintenance and control mode of mining truck hydraulic system pollution

BIAN Yuan, LI Yuan, ZHANG Zhijun

2016, 31(6): 66-68.

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Abstract: In order to improve truck utilization and reliability, we scientifically and rationally control the hydraulic oil pollution. Taking the types and sources of hydraulic system pollutants as the starting point, the article analyzes the causes and consequences of hydraulic system pollution and researches mining vehicles hydraulic system pollution control mode.

Technology and application of electric wheel dump truck localization wheel edge reducer

WANG Feng

2016, 31(6): 69-72.

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Abstract: This article mainly introduces the technology principle, technical characteristics, application areas of wheel edge reducer and wheel edge reducer RAMS analysis, and briefly introduces the application effect of wheel edge reducer designed by China, which lays the foundation for localization process promotion of large domestic mining machinery and equipment.

Research on electric drive and control system reform based on WK10B shovel

HE Tao

2016, 31(6): 73-75.

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Abstract: Through analyzing the DC converter type WK10B shovel structure and electrical drive systems, the article researches the use of "upper HMI + PLC Fieldbus + AFE inverter drive" consisting of three levels control system to replace the traditional DC converter unit and GM analog control systems, and proposes AC frequency conversion scheme of shovel.

Cause analysis on front wheel bearing frequent damage of MT4400AC truck

PANG Hua

2016, 31(6): 76-79.

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Abstract: The front wheel bearing of MT4400AC electric wheel dump truck has frequently damaged since 2007, which causes the equipment not to normally work. Through analyzing the damage causes of MT4400AC truck front wheel bearing, the author presents the related maintenance suggestion, which effectively reduces the damage frequency of the truck front wheel bearing.

630E electric wheel truck main generator no generating fault diagnosis

MA Jianzhong

2016, 31(6): 80-82.

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Abstract: This article describes the fault phenomenon of 630E electric wheel main generator no generating electricity, and analyzes the input of main generator excitation current and output of main generator voltage two aspects. The author ultimately finds out the cause of fault and timely carries out rectification and repair.

Analysis on 495HR shovel increasing gearbox repair technology

SUN Kai

2016, 31(6): 83-86.

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Abstract: Through illustrating 495HR shovel increasing gearbox repair technology, the article introduces the whole process of lifting gear box various forms damage repair and whole assembly, which provides reference experience for large mining equipment increasing gearbox repair technology and sets the standard for improving the quality of maintenance.

Prediction on lithology identification of cutting drilling machine based on decision tree CHAID model

MA Chuanxian

2016, 31(6): 87-89.

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Abstract: In order to study the relationship between the automatic drilling parameters of LWD-200B type cutting drilling machine and rock properties in the open-pit mine, the mine collects the real-time data related to the lithology by drilling parameter recorder in the field, and identifies the nature and location of different rocks through observing and analyzing debris in the drilling process. Using decision tree CHAID model of Clementine software, the article carries out statistical analysis on drilling parameter, and predicts the rock distribution of work platform.

Practice of ground production system dust control in Zhundong Open-pit Coal Mine

LIU Shaofei

2016, 31(6): 90-93.

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Abstract: Combining the actual ground production system production process, the article analyzes the dust sources of ground production system each link and introduces the methods and measures of ground production system dust control.

Research on reclamation greening technology in Yimin Open-pit Mine

LI Wenchao, LI Ji, LI Xiyao, WANG Xixian, LV Shouping

2016, 31(6): 94-96.

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Abstract: This article elaborated the reclamation greening technology in Yimin Open-pit Mine and summarized reclamation greening technology scheme in open-pit mine dump. The mine chose dump to plant species, established the covering technical standards, implemented soil and water conservation engineering measures, managed reclamation greening result, and obtained reclamation greening patterns.

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