Determination of Safe Distance While Blasting at Open Pit Mine Zabrdica, Valjevo

In order to optimize the shape of the compound slope at the end of the open-pit mine under the condition of non-irregular boundary, the compound slope composed of the stope end and the inner dump in the south of the open-pit mine in Pingshuo is studied. Due to the impact of land acquisition, the space of external dump is seriously insufficient, and with the development and change of mining engineering and the influence of geological structure, the problem of compound form optimization and the release and utilization of internal drain space in the south side is generated. Through field investigation and theoretical analysis and numerical analysis method, on the basis of investigating the ore party production status, to establish a 3 d geological model, select two battery profile typical position, using rigid body limit equilibrium method from the perspective of 2 d, in the full study south help shrink battery limit compound stope side slope and mine safety distance, flat width, and the direction of dump active line and the relationship between the stability design of multiple slope configuration scheme, through the various methods of slope stability, enforceability and comparing some important parameters such as displacement capacity, ultimately determine the technology feasible economic and reasonable boundary zone composite slope space form. Based on the above research results, FLAC3D software was used to study the stress-strain relationship inside the slope, revealing the deformation and failure mechanism and stability of the composite slope in the south bound area. The results show that the landslide mode and stability of the composite slope in the south bound area of pingshuoAndaobao open-pit coal mine are mainly controlled by the safe distance between stope and dump and the weak layer of 11 coal floor. According to the design, the economic and reasonable parameters of the composite slope in the south slope shrinkage boundary area are as follows: the safe distance between the stope end side and the dump site is 50m, the width of the dump flat plate is 60m, and the working line Angle of the dump line with the abandonment height of 255m is 125°, the total discard space was95,934,100 m3.

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Parameter determination of soil oscillation law using quotient of the relative growth increments of oscillation velocity and reduced distances at 'Nepričava' Open Pit Mine

Podzemni radovi ◽

10.5937/podrad1526009l ◽

2015 ◽

pp. 9-19

Author(s):

Suzana Lutovac ◽

Sanja Bajić ◽

Radmila Gaćina ◽

Marina Ravilić

Keyword(s):

Open Pit Mine ◽

Open Pit ◽

Parameter Determination ◽

Relative Growth ◽

Growth Increments ◽

Oscillation Velocity

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Determination of optimal contours of open pit mine during oil shale exploitation, by Minex 5.2.3. program

Journal of Process Management New Technologies ◽

10.5937/jpmnt1302001i ◽

2013 ◽

Vol 1 (2) ◽

pp. 1-9 ◽

Cited By ~ 1

Author(s):

Miroslav Ignjatovic ◽

Radmilo Rajkovic ◽

Snezana Ignjatovic ◽

Lidija Djurdjevac-Ignjatovic ◽

Lazar Kricak ◽

...

Keyword(s):

Oil Shale ◽

Open Pit Mine ◽

Open Pit

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Management and engineering solutions to improve stripping equipment efficiency in Chernogorksy open pit mine

MINING INFORMATIONAL AND ANALYTICAL BULLETIN ◽

10.25018/0236-1493-2018-12-64-36-48 ◽

2018 ◽

pp. 36-48

Author(s):

G. N. Shapovalenko ◽

S. N. Radionov ◽

V. V. Gorbunov ◽

V. A. Khazhiev ◽

V. Yu. Zalyadnov ◽

...

Keyword(s):

Open Pit Mine ◽

Open Pit ◽

High Concentration ◽

Open Pit Mines ◽

Blasting Operation ◽

Internal Dump ◽

Mining Conditions ◽

Mining Front ◽

Comparison Of Equipment

Chernogosky open pit mine integrates truck-and-shovel system of mining with overburden rehandling to internal dump with a set of walking excavators for rehandling of overburden to mined-out area of the pit. It is possible to improve efficiency of stripping in the conditions of Chernogorsky OPM by reducing percentage of stripping with more expensive handling system. The relevant research and solutions to this effect are presented in this article. Comparative characterization of mining conditions and parameters of mining systems applied is given for open pit mines Chernogorsky, Turnui, Nazarovsky, Vostochno-Beisky and Izykh. The comparative analysis points at the need to account for difficulty of mining and process sites in comparison of equipment productivity. High concentration of mining machines, which is conditioned by narrow mining front and simultaneous operation of five faces, as well as blasting operation implemented every 1-2 days, are recognized as the main constraints of excavator capacity in mining with direct dumping in Chernogorsky open pit mine. The management and engineering solutions implemented in the mine and resulted in higher efficiency of draglines are described.

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Assessment of maintenance schedule uniformity for Belaz dump trucks in Chernogorsky open pit mine

MINING INFORMATIONAL AND ANALYTICAL BULLETIN ◽

10.25018/0236-1493-2018-12-64-127-133 ◽

2018 ◽

pp. 127-133

Author(s):

E. A. Vakulin ◽

V. A. Ivashkevich ◽

E. I.I. Gnitsak ◽

V. S. Baikin ◽

S. P. Maslyukov

Keyword(s):

Open Pit Mine ◽

Open Pit ◽

Time Loss ◽

Maintenance Schedule ◽

Monthly Average ◽

Dump Trucks ◽

Maintenance Personnel ◽

Productive Time ◽

Assessment Results

Uniform schedule maintenance of mining and haulage machines is one of the key conditions for increasing productive time of maintenance personnel and decreasing monthly average servicing time. Currently, Russian mines infringe regulated maintenance schedule aimed to improve output per shift. The loss of time of maintenance personnel and equipment as a consequence maintenance irregularity is never assessed. This article presents assessment results on maintenance schedule uniformity in terms of dump trucks BelAZ-7513 and BelAZ-7530 at Chernogorsky open pit mine, SUEK-Khakassia. A variant of calculation of time loss owing to inconsistent maintenance schedule for dump trucks is proposed. The loss of time by maintenance personnel and by mining/haulage machines is assessed. The fleet of dump trucks BelAZ-7513 and BelAZ-7530 is analyzed depending on overtime of operation between maintenance periods. It is recommended to improve uniformity of maintenance schedule for mining and haulage equipment.

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Qualitative assessment of equipment failure cause finding and removal

MINING INFORMATIONAL AND ANALYTICAL BULLETIN ◽

10.25018/0236-1493-2018-12-64-116-126 ◽

2018 ◽

pp. 116-126

Author(s):

E. A. Vakulin ◽

A. I. Zayats ◽

V. A. Beklemeshev ◽

V. A. Ivashkevich ◽

V. A. Khazhiev ◽

...

Keyword(s):

Production Condition ◽

Real Life ◽

Open Pit Mine ◽

Qualitative Assessment ◽

Open Pit ◽

Quality Level ◽

Equipment Failure ◽

Operation Conditions ◽

Failure Investigation

Investigation of failures is one of the critical activities of mining and haulage equipment operability assurance in mining. Maintaining failure investigation at the required quality level, it is possible to identify provisions, rules and procedures that should be revised or changed, operation conditions that should be improved, additional personnel training, if required, etc. Investigation of failures in mines is under responsibility of machine men and electricians of maintenance and operation services. In reality, factory management and setup for production condition weak concernment of these workers in quality investigation aimed at finding of sources of equipment failures. This article describes real-life results achieved in development and use of maintenance service operation, technology and management monitoring. The requirements are substantiated for quality improvement in failure cause finding and removal in mining and haulage equipment at Chernogorsky open pit mine, SUEK-Khakassia. Causes of the present quality of failure investigation by machine men of Chernogorsky Repair and Engineering Works and Chernogorsky open pit mine are revealed. The proposed recommended practices will improve quality of mining and haulage equipment failure investigation.

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