The main causes are determined through analyzing all factors influencing the rate of abandoned well as well as the technologies and management measures for controlling the rate of abandoned well are formulated and implemented seriously to reduce the perforation costs.

In the article, the principles, importance and requirements are elaborated starting with the stope blasting and production management aiming at the key jobs in site productions; the specific technical measures and delicacy management methods are proposed to effectively reduce waste and production costs as well as improve production efficiencies so that the whole outlook of stope is optimized and the effects are good.

The technologies and management measures for improving the efficiency of ore extraction and process quality control are formulated and implemented seriously to improve the efficiency of ore extraction.

The technologies and management measures for improving the blasting quality are formulated and implemented seriously through analyzing the factors influencing blasting quality to improve the blasting quality.

The bench deep-hole blasting is the main measure for open-pit mining. The blasting quality directly influences whether the subsequent mining, loading and the whole production technologies could be smooth, which is vital for completing the production and capital consumption. In the paper, the methods for reducing big rocks of blasting are discussed combining with the actual situations of productions in the East Stope of Baiyunebo Iron Mine to contribute ideas and exert efforts for reducing costs and increasing benefits.

The quality and effects of controlled blasting at bank near slope of Baiyunebo Iron Mine are analyzed with the variance analysis of probability theory and orthogonal experimental design as well as the parameters of blasting hole pattern are further optimized. As a result, the frequency of blasting test has been reduced and the blasting effects are good, which provide the safe and reliable data for the subsequent controlled blasting with similar engineering geological conditions.

Based on field experiment, comparing the effect of different grading schemes for ore main road paving gravel material, the main causes of road life cycle are analyzed from the internal and external causes of mining road disease. The analysis process focuses on data collection and experimental comparison, combining with the relevant theory of highway engineering to determine the final optimization scheme.

In the paper, the actual production of Baiyunebo open-pit iron mine is taken as an example. Through its main stope car——implementation and production practice of belt conveyor system, it is estimated that the annual cost of rock transportation will be reduced about 26.44 million yuan in 2017. The results show that the belt conveyor system process will be the main mode of open pit mine into deep mining.

According to the design currently carried out in the main stope, the waste dump of rock belt conveyor system needs 687, 600 m² land acquisition. In order to ensure the volume of the waste dump to meet the production demand conditions and to avoid the cost of land acquisition, the waste dump location of rock belt conveyor system in main stope is adjusted and studied. The research puts forward three kinds of schemes by different occupation of land on belt conveyor for rare earth dolomite. Finally, the location adjustment of waste dump within the boundaries of iron net fence is determined.

The expansion of the dumping plough working face is the process of continuous change, and the scale of the subsidence, landslide and other diseases is also expanding with the extension of the dumping plough working face. Therefore, in order to ensure the safe production of belt conveyor system, it is necessary to sum up a set of effective operation methods, which is conducive to the standardization of prevention and control of subsidence, and also to facilitate the normalization of management.

Iron, rare earth and niobium resources in Baiyunebo Iron Mine rank first in the world. The paper focuses on the present situation of waste dump from the rock transportation process and the rock stacking situation. In view of the digging, stealing and mining behavior, rare earth resources protection project has taken effective measures to protect rare earth resources and has achieved remarkable results. In the future, better protection of useful rock, scientific and rational use of mineral resources, is the responsibility given to us by history.

In the open-pit mining, high water level deep hole blasting often appears linear meter with large charge amount, stemming length is too long, unit explosive consumption is high, misfire, half explosion, foundation, chunks and other problems, and the higher cost, blasting site processing being difficult and the safety factor being low, which seriously affect the ore mining efficiency in mine. Through in-depth analysis of the key technologies such as performance of site mixed emulsion explosive, oil-water ratio adjustment and chemical sensitizing process, the corresponding improvement methods and control measures are put forward to improve the quality of explosives, so as to ensure the high water level deep hole blasting effect and to improve the efficiency of ore mining.

In recent years, with several domestic and foreign mixed loading truck explosion accidents occurring, the issues of safe use and supervision for mixed loading explosive truck are also increasingly prominent. In the paper, through the analysis of current security status of existing mixed loading emulsion explosive truck in Chemical Plant of Baiyunebo Iron Mine, the key problems affecting the safety of mixed loading emulsion explosive truck are found out and improved by means of technical ways to further enhance the safety in the process of mixed loading emulsion truck and supervision of emulsion explosive, so that the safety of emulsion explosives goes into a new step.

In the paper, the conceptual model of mine management work is constructed under the premise of studying contents of mine geological management by using Chekland methodology; based on the comparison of conceptual model and actual situation, the main problems are analyzed and summarized, and the methods and measures to effectively strengthen mine geological management are obtained.

The paper takes ore production management in Baiyunebo Iron Mine as the research object. Based on detailed analysis of ore production process system current situation in Baiyunebo Iron Mine, the uniformity and stability of ore is effectively improved through improving the ore construction and making rational ore blending measures by Baiyunebo Iron Mine, making full use of mineral resources so as to ensure comprehensive pass rate of output ore from Baiyunebo Iron Mine.

The total station gradually replaces the traditional mine measuring tools with its complete function and simple operation. Total station has a variety of uses such as angle measurement, distance measurement (slope distance, horizontal distance, height difference), three-dimensional coordinates measurement, traverse survey, intersection fixed point measurement and setting-out survey, and the function can be further expanded after built-in special software. In the paper, it is briefly expounded the applications of total station in mine survey from aspects of control survey, detail survey, digitized mapping, stripping quantity survey, topographical map survey and a variety of engineering survey and so on.

Crusher bin is to store materials after crushing and enter the feeding bin through material self weight, playing a role of intermediate store, buffer and balanced operation and so on. As the production is large, liner wear is serious when materials are slipping, and replacing liner requires a great deal of maintenance time, and there is a certain safety hazard. Ensuring the normal operation of the system, design a better wear resistance and shorter replacement time liner to protect equipment at the same time to complete the rated output. The designed suspension composite liner is divided into wear plate and bottom plate, and needs a certain time to be replaced in early time but it just needs changing wear plate in the future.

The new traction substation in Baiyun Iron Mine is responsible for direct current system power supply of the whole mine. The 6 000 V alternating current is rectified into DC 1 500 V to supply power for the whole mine's railway production system. Now it is being upgraded, and during the test of power supply line, coil burning of circuit breaker occurs. According to the phenomenon of circuit breaker burning, causes for coil burning of circuit breaker are analyzed, and protective circuit for preventing coil burning of circuit breaker is put forward.

The high voltage motor can effectively prevent its impact on surrounding power grid in the starting process by using frequency conversion control, realize the stepless speed regulation and meet the requirements of production process on motor speed control by using high voltage converter, so as to improve the yield and quality of products, as well as greatly save energy and reduce production cost. But the high voltage converter has bad effect on power grid and electrical equipment. Therefore, it is also important to pay close attention to whether the frequency conversion technology can work stably in the application of high voltage motor.

Common handling methods of single phase grounding fault include arc compensation method and contact arc suppression method, the arc suppression coil compensation method is applicable to temporary grounding fault, while the contact arc suppression method is suitable for dealing with permanent single phase grounding fault. Aiming at the problems of 6~35 kV neutral ineffectively grounded system, the MXJD single phase grounding fault management system integrates the advantages of the two grounding modes, solves the accuracy problem of fault line selection, and provides flexible, fast and effective fault handling methods.

The collecting ring of 783kW synchronous traction generator is severe worn to limit, accompanied by risks of hidden danger expansion at any time, which is seriously harmful to the safety and smooth operation of equipment. In order to save renewal fund and maintenance cost of equipment, technological transformation for collecting ring of 783 kW synchronous traction generator is carried out to strive to achieve the self repair of collecting ring and restore to the design standard, greatly prolong the service life of equipment, reduce the production cost, improve the technical condition of equipment operation, and ensure the smooth operation of equipment economy.

The secondary transfer production of railway rock is an important link of production process in Baiyunebo Iron Mine. Due to production constraint, route condition, influence of external environment and so on, the laying period of each rock dumping route is different, and the laying period of some routes is postponed to winter, which is unfavorable to production. In this article, through the measures of regulating the yield, governing the single end, extending the routes, adjusting the width of track and relaxing the ditch-pond, the laying of winter is postponed to summer and autumn to save costs, improve productivity and ensure safe production.

The influence factors of electric locomotive such as long service life, line condition declining and relatively small curve radius of movable rock dumping route often lead to the failure of spindle thread damage in the 150t electric locomotive. Thus, it is not conducive to safe production and requires the welding and turning of spindle thread to improve the use safety and operation rate of electric locomotive.

Based on the design requirements of IGBT DC chopper electric drive system for 80 t mining electric locomotive, this paper expounds the structure, main technical indexes, circuit working principles and characteristics of IGBT DC chopper electric drive system, analyzes the characteristics of IGBT DC chopper non-absorbing loop technology, and carries out the technical transformation of electric drive system for the old cars. After transformation, the using quantity of cables has been greatly reduced.

This paper systematically analyzes the fault causes of Allison DP8963 type electro-hydraulic control automatic transmission such as no gear increase, low pressure and high oil temperature, summarizes the fault diagnosis method, and reduces the fault processing time, so as to increase the service rate of 3311E mining dump truck.

With the rapid development of industrial technology and mine geological prospecting, the types of gas turbines are increasing, the power is getting bigger and bigger, and the functions are becoming more and more. Whether the operation of a mine car engine is normal or the service life is long or not depends not only on internal factors such as its structure and quality, but also on the proper and timely care and maintenance. The proper care and maintenance is an important link to prolong the service life of the mine car, reduce the economic loss and ensure the safety of driving.

According to slow tilting and difficult returning of tilting air cylinder in KF-60 automatic dumping car during winter operation, specifically from the tilting system structure and tilting work principle of the automatic dumping car, this paper analyzes the causes of slow tilting and difficult returning of tilting air cylinder in detail and puts forward some effective measures to improve the efficiency of tilting system in automatic dumping car.

According to the actual operation of boiler, this paper introduces the operation judgment analysis, handling techniques and prevention measures of grate failure after the fracturing and wearing of the driving wheel.

The belt conveying system is the main conveying mode for open pit mine to enter into deep mining stage. As an important part of belt conveying system, power and control system plays a crucial role in belt conveying system. Through the analysis of power supply system and automatic control system for belt conveying in the main stope of Baiyunebo Iron Mine, the feasible plan for power and control system of rock belt in main stope is ultimately determined.

With the gradually increasing implementary degree of national environmental protection policy, the requirements of mine environmental management are increasingly strict. This paper introduces the environmental management of Baiyunebo Iron Mine, and discusses the main points and development trend of mine environmental management.

The stope highway of Baiyunebo Iron Mine is constructed with gravel grading materials, a lot of dust and exhaust gas are produced during the operation of mine-cars and sprinklers, which not only cause great damage to personal and environment, but also have security risks when the heavily-loaded sprinklers go down the slope. Through research and analysis of the fixed highway running condition in Baiyunebo Iron Mine, a set of electric control spraying system of the stope is built to complete the watering dust suppression of the fixed highway and realize the safety production and environmental protection of the highway in the mine stope.

This paper mainly analyzes the function of hand-held meter reading instrument in water fee management system of Baiyunebo Iron Mine and how to integrate it into the existing water fee collection management system. At the same time, it also briefly introduces the development tools of the system.

This paper mainly introduces the current situation of rare earth protection management in Baiyunebo Iron Mine, and analyzes the function of video surveillance system. In this paper, video surveillance system is used as a tool to realize the transformation of management mode for rare earth resources through the integration of technology, management, rules and regulations. And the enormous social benefits that produced after the transformation of management mode is analyzed in detail.

This paper discusses how to use the characteristics of network model of VMWARE software and how to select and set up the virtual local area network that complies with the experimental platform to obtain an efficient and practical network experiment test platform at a very low price. The virtual local area network can be used for all kinds of server environment debugging, intrusion and defense technology, software testing and so on, so as to achieve the purpose of experimental test which needs to be completed.