Table of Content

15 December 2015, Volume 30 Issue 12

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Ground production system loading technology optimization in Tianchi Energy  South Open-pit Coal Mine

GUO Jin, QIAO Long, WU Yidong

2015, 30(12):  1. 

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The outward transportation way is mainly train shipment  in 10.0 Mt/a ground production system preliminary design of Tianchi Energy South Open-pit Coal Mine (design capacity of 5 000 t/h). By unloading the plough unloader for train loading station on the tape machine in the existing ground production system loading technology, the mine can release material and optimize the loading process.

Optimization of dumping parameters in anticline zone internal dump of Antaibao Open-pit Mine

LIU Yun

2015, 30(12):  3. 

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 According to coal seam from nearly level to tilt in anticline zone, the article optimizes dump parameters from the effect of anticline structure on dump, analyzes and predicts the slope stability of internal dump after optimization. Considering the geological conditions, mining conditions, climate condition, soil physical and mechanical properties, transportation and abandoned way and topography of dump, the author obtains the technical parameters and dumping parameters and the conclusion of slope stability after optimizing parameters.

Prediction methods of surface subsidence under the condition of Wongawilli mining method

ZHANG Lihai, GAO Yunfeng

2015, 30(12):  8. 

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The article presents the probability integral method after FLAC3D numerical simulation technology embedded improvement to calculate procedure  to research surface subsidence. Through the engineering verification, this new calculation system can save monitoring fees and be adapt to the analysis and calculation of different engineering geological conditions, Which is more practical than the pure probability integral method or numerical simulation technology.

Comprehensive fire extinguishing scheme in Huangling mining area of Lvxin Open-pit Mine

YIN Yongliang, YAO Guoqing

2015, 30(12):  12. 

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According to high temperature fire area condition in Huangling goaf, through research and analysis, the author reveals the spontaneous combustion time and burning situation in No.15 coal seam, formulates the comprehensive fire extinguishing scheme, which has a certain reference value on solving the similar problems in size open-pit mines.

Long term development plan of  internal dump in Fushun East Open-pit Mine

LU Bing, CHEN Jiwang, SUN Kai, MA Zhilong

2015, 30(12):  15. 

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Fushum East Open-pit Mine adopts the railway dumping technology to dump, and its internal dump site is located in West Open-pit Mine mining boundary, which is respectively the eastern dump and western dump. In May 2014, West Open-pit Mine north slope emerges rib spalling slipping, which causes the dumping ability to sharply decline in East Open-pit Mine internal dump. According to the total dumping amount, the author presents the planning and construction scheme of the internal dump to solve the excessive dumping pressure problem.

North end slope covering soil scheme in Xinjiang Tianchi Energy South Open-pit Coal Mine

LI Jingui

2015, 30(12):  19. 

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 This article carries out analysis from north end slope step retained time and current situation, the scheme determination, technical parameters selection, construction procedure and safety technical measures aspects. Through covering soil on north end slope, the mine effectively alleviates the pressure of fire prevention in stope, which provides a strong guarantee for safety production in south open-pit coal mine.

Application of rock semi-continuous system in Pingshuo East Open-pit Mine

LIU Guo, FU Xinhua

2015, 30(12):  22. 

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From the site preparation, equipment, machine way preparation, improving the system efficiency which semi-continuous system encounters, the article introduces the application practice of semi-continuous technology system, which provides the exchange of experience for similar mines.

Analysis on south dump slope deformation failure mechanism in Hesigewula Open-pit Coal Mine

HOU Xingye, HUANG Cheng, WANG Baihe

2015, 30(12):  26. 

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 In order to ensure safe production, the author analyzes the sliding mass, and researches the main factors of sliding and deformation failure mechanism of slope. According to analysis results, the author formulates the feasible anti-sliding measures and control measures, which has important significance on healthy operation and safe production of south dump.

Reliability analysis of semi-continuous process system in Pingshuo East Open-pit Mine

YAO Guodong, LIU Weiyu, YANG Wenzhong, ZHANG Wei

2015, 30(12):  29. 

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Taking the semi-continuous process system of rock stripping as the research object, the article carries out statistical analysis on the failure time of process system equipment, adopts the mathematical software to calculate the reliability of main equipment, and obtains the whole system reliability for 0.696. The author points out the factors of affecting excavator and crusher, dumping machine reliability, and formulates the measures to improve the reliability of the whole system, which gradually makes the actual production capacity to reach the theoretical capacity to meet the normal production requirements.

Research on mining technology in No. 2 Open-pit Mine of Huaneng Yimin Coal and Electricity Company

SU Qianjun, LI Xiaoshuang, ZHU Jianxin

2015, 30(12):  32. 

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Through some research means of scene investigation, theory analysis, technical and economic scheme comparison, the article researches on mining technology in No.2 Open-pit Mine of Huaneng Yimin Coal and Electricity Company. The author obtains that the combined mining technology of wheel bucket process and single bucket-self-moving crusher semi-continuous mining technology was used for stripping above NO.15-1 coal seam; single bucket-mining process was adopted for stripping between NO.15-1 coal seam and NO.15-2 coal seam; the single bucket + self-moving crusher belt conveyor semi-continuous mining technology was adopted for coal mining.

Water supply and drainage design in Dahuangshan oil shale open-pit mine

JIA Zhenzhen

2015, 30(12):  36. 

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In order to meet the requirement of the comprehensive development and utilization of oil shale project, the mine builds a size of 26.0 Mt/a oil shale open-pit mine. The article respectively introduces the water quantity and water quality requirements of production, living and fire fighting, the choice of water supply source, the design of water source supply system, drinking water supply system, production water supply system and fire fighting water supply system, and drainage system water quantity and quality, the design of car wash wastewater treatment and sewage treatment.

Slope disasters and prevention and control technology in open-pit mine

FENG Jianrong

2015, 30(12):  40. 

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 The article discusses the slope structure and slope landslide disaster mechanism in open-pit mine, and presents the unstable slope prevention measures. The author researches the slope safety prevention and control technology, such as reasonable slope parameters, mining sequence and propulsion method, blasting technology.

Analysis on goaf span and roof safety rock thickness in Pingshuo East Open-pit Mine

ZHAO Jun, LYU Jianzhou, HE Feng, YAO Guodong, HAN Feng

2015, 30(12):  43. 

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In order to ensure safe and efficient mining in East Open-pit Mine, the author needs to make the detailed and reasonable calculation on the safety thickness of goaf roof rock. Based on the parameters for calculation, through utilizing engineering experience method and numerical simulation method, the article comprehensively analyzes the reasonable value of goaf roof rock safety thickness and obtains the calculation formula of goaf roof rock safety thickness, whose results have the reference and guidance value for the similar open-pit mine.

Imaginary quantity control in open-pit mine

HE Feng, YAO Guodong, ZHAO Jun,HAN Feng

2015, 30(12):  47. 

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In China, the open-pit mine adopts the single bucket - truck system process. The calculation of monthly production capacity uses the trucks transportation total amount and measurement acceptance forms, The numerical difference between the two is the monthly virtual volume. The article analyzes the imaginary quantity form, the formation cause, the effect and how to control it.

Measures of improving mine truck tire life

WANG Zhiguo

2015, 30(12):  50. 

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Through the introduction of tire pressure and temperature monitoring system, using scientific and accurate method, the author ensures the accuracy of pneumatic pressure from the first link of using tire, and finds out the abnormal phenomenon such as slow go flat tire, which prolongs tire service life and ensures the safety of personnel.

Resistance reduction scheme of 110 kV substation grounding grid

CHEN Xu

2015, 30(12):  53. 

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This article introduces the design of 110 kV substation grounding grid , and lists several common solutions that grounding resistance doesn't meet the requirements. According to the actual situation of the substation, the author gives a reasonable scheme of reducing resistance.

Blasting digital integrated process system in Heidaigou Open-pit Mine

REN Zhanying, YANG Renshu, HU Weimin

2015, 30(12):  55. 

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Based on the rock blasting theory and casting blasting technology, the author comprehensively utilized the Object-Oriented (OO) technology, Geographic Information Systems (GIS), Virtual Reality (VR) technology, multidimensional database theory and geostatistical methods, researched and developed the blasting digital integrated processing system to carry out the overall system processes and data flow design, analyzed the core technology of system development, dissected system's function structure, and conducted the application verification under on-site conditions, which achieved good effect.

Analysis on belt conveyor discharging material track

LIU Bing, LIU Jia

2015, 30(12):  59. 

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Through analyzing the material properties, conveyor belt speed, direction, and roller diameter, the author obtains that the track type of discharging material, establishes the proper coordinate system and math calculation model, and gives the calculation method of material track in the process of discharging material.

Technology design of conveyor system transferring chute

JIANG Tianyang

2015, 30(12):  63. 

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 From the chute size determination, inclined angle choice, line arrangement, material trajectory, design of overflow several issues, the article introduces the difficult points of chute design, which improves the service life of chute, reduces the noise of transferring point and increases the overall and stable operation ability of conveyor system.

Single phase grounding line selection ways of 6 kV in Yimin Coal and Electricity Company

TIAN Hongbin, YANG Xiaoyun, PEI Bin

2015, 30(12):  66. 

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6 kV power supply system adopts indirect neutral point grounding way. Traditional line selection ways have some shortcomings, such as poor reliability and low success rate. The article researches the operation characteristics of power supply, and presents a fault line selection scheme of neutral point controllable short-circuit concept.

Effect of random modulation strategy on system vibration noise in coal preparation plant

XIA Jiakuan, ZHANG Xiaoyi

2015, 30(12):  68. 

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 In order to reduce the vibration noise caused by motor in the system of coal preparation plant, we can reduce the vibration noise from motor ontology structure design and its material and control strategy aspects. According to the control strategy, the author presents a technology of random switching frequency which can spread spectrum of switching frequency and its times to reduce the harmonic amplitude. The author obtains the spectrum analysis diagram of SVPWM control strategy and random spectrum analysis diagram. Applying the random switching frequency PWM control strategy can obviously reduce the harmonic amplitude.

Collection and process of information quantity in coal mine power monitoring system

ZHAO Jing

2015, 30(12):  72. 

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In order to solve the monitoring problem of coal mine power system, this article studies the information acquisition and processing  problems of power monitoring system. Through solving the power supply equipment complex information acquisition and processing in coal mine, the mine realizes the intelligent monitoring of power system, which fully guarantees the safety production in coal mine.

The existing problems of wastewater treatment and reclaimed water reuse in Xilinhaote

YANG Xuebin

2015, 30(12):  75. 

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 According to the present situation of low index water quality and the existing problems of reclaimed water in the application and treatment technology of water in wastewater treatment plant, combining the actual situation and the development status of reclaimed water reuse at home and abroad, through investigation and comparative analysis, the article clears the specific reasons of lower standards pollutant discharge, and introduces the main factors of restricting reclaimed water reuse in domestic and Xilinhaote.

Analysis and protection countermeasures of geological environment problems in the mine

WU Jin, PAN Yulin, SHANG Hongjun, JIA Dongmei, PAN Lei

2015, 30(12):  78. 

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Through analyzing a  series of geological environment problems caused by the brick clay mine in Wangbuzhuang Town of Baodi District, the author puts forward the corresponding countermeasure so as to strengthen the protection work of local mine geological environment by means of law, administration and economy.

 Application of dry fog dust suppression technology in Shengli Open-pit Mine coal dust control

WANG Wenxue, XU Jianjun

2015, 30(12):  80. 

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 Through deeply researching dry fog dust suppression technology, using the experimental data and theoretical calculation, comparing it with wet dust suppression system, the author obtains data, which show that dry fog dust suppression technology has many advantages in ground production system dust control aspect. The technology can achieve good economic benefits, environmental benefits and social benefits.

Analysis on production operating cost and cost control in Shengli Open-pit Mine

SHI Guangyang

2015, 30(12):  84. 

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Based on the production operation data of the three quarter of 2014 in Shengli Open-pit Mine, the author analyzes the affecting factors of production operation cost, such as controllable cost components, production organization, main mining equipment operation condition. Through comparing the previous cost, the mine adopts cost control analysis under self - operation and outsourcing production mode, finds out the main factors of affecting production cost, which provides reference for reducing the production costs and improving the economic benefits of mine.

Competition for employment scheme in Shenhua Shengli Energy Company

JIN Song

2015, 30(12):  88. 

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 Competition for employment is an efficient way of human resources allocation. Through "publicity, justice and fairness" operation mode, the operation mode can select and allocate personnel for enterprise, and solve the talent selection and appointment problems during organization personnel allocation. The article presents the guiding thought and principle of competition for employment, and researches the flow of competition for employment and personnel assessment scheme design.

Discussion on management mode in large open-pit coal mine

LI Guimei, AO Bo

2015, 30(12):  91. 

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This article illustrates that "five type" enterprise performance evaluation content and the whole quality standardization  management in Haerwusu Open-pit Mine  are combined to create "591" enterprise management model taking first-class open-pit mine as goal, and achieve coal mine safety production management science and standardization.

Engineering data management in project construction period

WANG Nan

2015, 30(12):  95. 

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This article analyzes the importance of engineering archives management in construction period,  discusses the existing problems in engineering data management work from the paying attention to strength , management system and monitoring process aspects, and puts forward the corresponding countermeasures and suggestions to solve these problems.