Rock pressure control in working a wide pillar by breast stoping with stowing

1975 ◽  
Vol 11 (3) ◽  
pp. 238-241
Author(s):  
S. V. Makarov
Keyword(s):  
Rock Pressure ◽  
Pressure Control

scholarly journals Sublevel stoping with applying artificial hardening stowing pillars for extraction of veins in complicated geotechnical conditions

2021 ◽  
Vol 6 (4) ◽  
pp. 252-258
Author(s):  
Sh. I. Khakimov ◽  
Sh. R. Urinov
Keyword(s):  
Rock Pressure ◽  
Underground Mining ◽  
Pressure Control ◽  
Underground Mines ◽  
Advantages And Disadvantages ◽  
Combined Use ◽  
Mining Machinery ◽  
Mining Methods ◽  
Mining Works ◽  
Sublevel Stoping

In the process of underground mining of deep levels rock pressure can appear in any form, creating a serious threat to the lives of miners, disrupting the normal course of mining works and reducing the efficiency of mining production. The solution of the problem of rock pressure control becomes very urgent for underground mines developing vein deposits at a depth of more than 250 m. The aim of the study is the development and justification of mining methods to provide safe and efficient mining of deposits in complicated mining and mechanical conditions. In this paper, the factors of redistribution and dangerous concentration of stresses in the mined ore mass were identified, the methods of rock mass management in complicated geotechnical conditions were studied, and their advantages and disadvantages were revealed. It was determined that the sublevel stoping with the combined use of existing methods of rock pressure control and applying selfpropelled mining machinery is currently one of the most promising method finding widening application scope. In the context of Zarmitan gold ore zone the options of technological schemes of the sublevel stoping method were considered, providing for a combination of different methods of rock pressure control, allowing to minimize the disadvantages of one method through using the advantages of other ones. We proposed sublevel stoping options with artificial polygonal pillars and with artificial columnar pillars, which allowed to reduce ore losses in inter-stope pillars, arch pillars, and secondary dilution. In addition, artificial pillars, taking compressive/tensile stresses, prevent their concentration and create safe conditions for extraction at adjacent and underlying levels.

Rock pressure control in chamber mining

1988 ◽  
Vol 24 (1) ◽  
pp. 21-26 ◽  
Author(s):  
A. E. Balek
Keyword(s):  
Rock Pressure ◽  
Pressure Control

Use of a column-supported artificial roof for rock pressure control in working thick steep coal seams by inclined slices

1976 ◽  
Vol 12 (1) ◽  
pp. 79-84
Author(s):  
V. F. Kvasnikov ◽  
V. V. Ryzhkov
Keyword(s):  
Rock Pressure ◽  
Pressure Control ◽  
Coal Seams

scholarly journals The research of burst hazard of the rocks massif of Rasvumchorr mineral deposit according to seismoacoustic monitoring

2019 ◽  
Vol 129 ◽  
pp. 01022 ◽  
Author(s):  
Maksim Rasskazov ◽  
Andrei Gladyr ◽  
Andrei Tereshkin ◽  
Anna Rasskazova ◽  
Denis Tsoy ◽  
...  
Keyword(s):  
Rock Mass ◽  
Rock Pressure ◽  
Pressure Control ◽  
Mineral Deposit ◽  
Rock Massif ◽  
Mining Institute ◽  
Burst Hazard ◽  
Measuring Complex ◽  
Academy Of Sciences ◽  
Far Eastern

Results of geomechanical research of burst hazard of the rock mass of Rasvumchorr mineral deposit with application of measuring complex are presented in the paper. Measuring complex includes the automated seismoacoustic system of rock pressure control "Prognoz-ADS" and the local geoacoustic device "Prognoz L". The measuring complex was developed in Mining Institute of the Far Eastern branch of Russian Academy of Sciences. Measurements and the analysis of parameters of the seismoacoustic events reflecting geomechanical processes in the developed massif is the basis for estimation of rock massif burst hazard.

Big Gains in Blood Pressure Control Since JNC-7

2007 ◽  
Vol 37 (2) ◽  
pp. 10
Author(s):  
BRUCE JANCIN
Keyword(s):  
Blood Pressure ◽  
Blood Pressure Control ◽  
Pressure Control

Keep Home Warm in Winter for Better Blood Pressure Control

2011 ◽  
Vol 41 (2) ◽  
pp. 22
Author(s):  
Bruce Jancin
Keyword(s):  
Blood Pressure ◽  
Blood Pressure Control ◽  
Pressure Control

Automatic pressure control of drilling mud based on downhole telemetry information

2019 ◽  
pp. 12-15
Author(s):  
V.N. Esaulenko ◽  
◽  
V.I. Kantemirov ◽  
N.V. Esaulenko ◽  
◽  
...  
Keyword(s):  
Pressure Control ◽  
Drilling Mud ◽  
Automatic Pressure

Early, Optimal Blood Pressure Control for High-risk Patients

2006 ◽  
Vol 2 (1) ◽  
pp. 25
Author(s):  
Peter M Nilsson ◽  
Keyword(s):  
Blood Pressure ◽  
High Risk ◽  
Blood Pressure Control ◽  
Pressure Control ◽  
High Risk Patients ◽  
Risk Patients ◽  
Optimal Blood Pressure
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