Coal is an organic sedimentary rock that forms from the accumulation and preservation of plant materials, usually in a swamp environment. Coal is a combustible rock and, along with oil and natural gas, it is one of the three most important fossil fuels. Coal has a wide range of uses; the...
The stability of the coal-rock combination structures, which involve coal pillars and roof rocks, is crucial for safe mining in underground coal mines, as well as for the safety of surface personnel and buildings. In the short term, the composite structure can maintain stability. However, over ...
Notably, the above research results were all obtained under static or quasistatic conditions. In fact, due to strong disturbances such as rapid excavation and coal blasting in coal mines34, analysing the dynamic damage and destruction of water-bearing coal and rock masses under impact loads is al...
“alternate layers of rock and coal piled upon each like the layers of a jelly cake, in which the thick layers of cake represent rockstrata and the thin layers of jelly the coal “beds”. The term bed in this sense is defined and identified from other rock layers or strata according to...
In order to study the mechanism of the dynamic disaster of rockburst in a deep coal mine and the prevention and control measures of weakening shock, the MTS815.03 servocontrolled rock mechanics test system is used to test the coal, rock, and combined specimens with the buried depth of nearly...
A method based on multi-well constrained inversion to generate the impedance volume is applied to improve the prediction accuracy of coal thickness.Taking No.10 coal-seam in Taoyuan Coal Mine as an example,we first establish a full band of geological model from the log analysis,then use conjuga...
Beijing.Next month.Thomas,an American consultant,will pay a visit to his company.Mr.Sun is responsible for looking after Thomas.This will be Thomas'fist visit to Beijing.Mr.Sun decides to choose a hotel which is very typical of China and is convenient for him to get a quick tour of the...
One particular case is “Zilbermints Law” (Pavlov, 1966, Yudovich, 2003), which was first observed by Zilbermints et al. (1936) and indicates Ge-enrichment near the roof, floor, and partings of Donetsk Basin coals. Thus an evaluation of the distribution of minerals and trace elements in...
Coal utilization is facing serious pressures from air pollution control, greenhouse gas emission reduction, and ecological and environmental protection. The coal geology still has eight difficult problems which need to be studied in the future. Keywords: coal geology research / ten major achievements /...
Geochemistry of source rock–controlled Late Triassic coal: An example from the Dabaoding Coal Mine in Panzhihua, Sichuan Province, southwestern ChinaGeochemistryTrace elementsREYSource rock-controlled coalsSouthwestern ChinaThe geochemistry of source rock-controlled coals from the Late Triassic Daqiaodi ...