Results 231 to 240 of about 3,852 (269)

Overburden breakage and surface damage evolution under high-intensity mining of shallow coal seams: evidence from Shendong mining area. [PDF]

Sci Rep
Zhang H, Zhang J, Xu Z, Zhang J, Du S, Wei S, Li X.   +6 more
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Reasonable drilling angle and technology application for pre-cracking thick-hard roofs before driving gob-side roadways in ultra-thick seams. [PDF]

Sci Rep
He F, Wu Y, Wang D, Zhang J, Tao K.
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Experimental Research on Resistivity Response Characteristics to Overburden Deformation and Failure

Chinese Journal of Geophysics, 2000
AbstractThe survey of the overburden deformation and failure caused by underground mining may provide reliable guidance for mining design and safe production. This paper deals with the similarity conditions and the practicability of model experiment, makes the dynamic survey of the electric field characteristics changes of overburden at different ...
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Study on the Monitoring Method of Overburden Failure of Shallow Wongawilli Mining Working Face

Advanced Materials Research, 2011
Through the practice and improvement of Wongawilli Mining method in Shendong Mining Area, it created Shendong Characteristic short wall mechanize room mining method. Due to the shallow coal seam, the fracture zones throughout the bedrock directly after the mining, therefore the bending sinking belt didn’t exist; the conventional "three zones" theory ...
Bin Zhang, Wen Li, Shao Gang Li, Jun Ying Zhang   +3 more
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Application of magnetotelluric method to the detection of overburden failure height in shallow seam mining

Arabian Journal of Geosciences, 2018
This paper studies the reliability of magnetotelluric (MT) method detection for overburden failure (OF) height in shallow seam mining. According to the geological conditions of the 52,505 working face in the Daliuta mine, five observation lines have been designed to detect the apparent resistivity (AR) of the overburden before and after mining ...
Wenbing Guo, Yi Tan, Yang Daming
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Characteristics of Overburden Failure and Fracture Evolution in Shallow Buried Working Face with Large Mining Height

Sustainability, 2021
In order to solve the issues of uncertain overburden failure height and water loss at the Daliuta coal mine, the collapse characteristics of overburden and the development height of water-conducting fractured zone were studied by using physical modeling,
Xiuchang Shi, Jixing Zhang
exaly   +2 more sources

Overburden Failure Associated with Slicing Mining in a Super Thick Coal Seam under Special Weak Aquifers

Water (Switzerland), 2022
With the increasing improvement of national ecological standards, the eco-environmental problems caused by super thick coal seam mining in western China are becoming more and more serious. The failure law of weak overburden stratum is an important factor
Ying Ge, Zhiqi Liu, Lifeng Chen, Quan Zhang, Kai Chen   +4 more
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Lost production costs of the overburden excavation system caused by rubber belt failure

, 2012
In this paper the average malfunction costs (lost production) of the overburden excavation system on the Tamnava - East field open-pit mine caused by the failure of belt conveyor rubber belts which work on the bucket wheel excavator, belt wagon and spreader are determined, i.e.
Bugarić, Uglješa, Tanasijević, Miloš, Polovina, Dragan, Ignjatović, Dragan, Jovančić, Predrag   +4 more
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Mine Overburden Dump Failure: A Case Study

Geotechnical and Geological Engineering, 2013
In any open cast mine, the management of stripped spoil during mining is crucial to the mine’s successful operation. The improper management of the overburden (OB) dump can result in stability issues which may affect safety and production of the mine. Various literatures have reported the failure of open pit dumps and the consequences in loss of life ...
Brett Poulsen, Manoj Khanal, A. Manohar Rao, Deepak Adhikary, Rao Balusu   +4 more
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Effect of tunnel overburden stress on the rock brittle failure depth

Arabian Journal of Geosciences, 2019
Tunneling under high overburden stresses results in many tunnel instability problems due to the rock overstressing. Understanding and simulating the rock failure process is the major issue of a deep excavation to achieve an appropriate rock support system that provides possible cost-effective and stable construction.
Heyam H. Shaalan, Mohd Ashraf Mohamad Ismail, Romziah Azit   +2 more
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