Special Distribution of Ore Bodies and Teplometric Method of Express Evaluation of the Rock Massif Disturbance

Author(s):  
Khaini-Kamal Kassymkanova ◽  
Gulnara Jangulova ◽  
Gulnura Issanova ◽  
Venera Turekhanova ◽  
Yermek Zhalgasbekov
2018 ◽  
Vol 56 ◽  
pp. 02013 ◽  
Author(s):  
Marina Potapchuk ◽  
Gennady Kursakin ◽  
Viktor Krukov ◽  
Mikhail Lomov

Further prospects for the development of “Pioner” gold deposit are associated with the development of deep-seated ore bodies by an underground method. When assessing the bump hazard of proposed technological solutions for stripping and working out the pit reserves of the deposit and substantiating the safe working conditions, some comprehensive studies were carried out, including an analysis of the geological and geomechanical conditions of deposit's development, detailed study of the physical and mechanical properties of rocks and ores, investigation of the fracture tectonics of the deposit and stress and strain state of the rock massif of the deposit. The performed modeling of the geomechanical processes of the rock massif with the use of numerical methods made it possible to identify the safe parameters of the guarding safety pillars under the pit bottom, and also to identify areas and elements of rock structures characterized by a minimum margin of stability according to the criteria of the acting maximum compressive and tangential stresses after complete mining of ore bodies. Recommendations were developed on the rational order of mining of ore bodies and on effective ways to protect and maintain mine workings.


2021 ◽  
Vol 266 ◽  
pp. 03013
Author(s):  
K. A. Anisimov ◽  
V. P. Zubov

The paper discusses the features of the development of pit reserves of the Udachnaya diamondiferous pipe which consists of two closely spaced ore bodies under the protection of a moving ore-rock massif (a safety cushion). Low stability of the rock massif located between the ore bodies is indicated. Such low stability is caused by the presence of areas of increased intensity of fracturing and low coherence zones in the massif; it is also caused by the mutual impact of mining operations carried out in closely located ore bodies. A conclusion is made about the danger of collapse of sizeable rock blocks from the edge zones of the rock massif located between the ore bodies onto the safety cushion. In this case, individual rock blocks can be 0.4-0.6 tons or more, the drop height is up to 600-700 m. Impact blows on the safety cushion when rock blocks collapse onto it can cause a disruption of underground mine workings stability and occurrence of dangerous pressure drops at the outlet of air waves from the safety cushion into the underground mine workings. A method for preventing dangerous impact blows is proposed, which consists in the forced collapse (with certain parameters) of the edge part of the rock massif located between the ore bodies, onto the safety cushion.


Author(s):  
V.I. Golik ◽  
◽  
Yu.V. Dmitrak ◽  
O.G. Burdzieva ◽  
◽  
...  
Keyword(s):  

2018 ◽  
Vol 1 (1) ◽  
pp. 72-78
Author(s):  
Godovnikov N.A. ◽  
◽  
Dunaev V.A. ◽  
Ignatenko I.M. ◽  
◽  
...  

Author(s):  
А. Molodetskyy ◽  
◽  
О. Gladkaya ◽  
V. Slyusarev ◽  
◽  
...  

2016 ◽  
Author(s):  
Michelle E. Campbell ◽  
◽  
John H. Dilles ◽  
William E. Threlkeld
Keyword(s):  

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