【摘 要】
：
The distributions of strata rock temperature around a driving head with auxiliary ventilation were analyzed theoretically based on a program which was developed by the authors to predict the thermal environmental conditions in a development heading with f
【机 构】
：
Department of Resources and Materials Engineering, Henan Polytechnic University, Jiaozuo 454000, Chi
论文部分内容阅读
The distributions of strata rock temperature around a driving head with auxiliary ventilation were analyzed theoretically based on a program which was developed by the authors to predict the thermal environmental conditions in a development heading with forcing auxiliary ventilation. The influences of wetnessof the airway surface were discussed on the cooled zone of the strata rock and on the temperature distribution in the surrounding rock. It is shown that the advancing speed and driving time have little influence on the temperature profile in front of the working face of a driving airway, and the rock temperature 1.5 m ahead of the working face can be taken as the virgin rock temperature.
其他文献
In the paper,the foundation,development,basic conception and general characteristics of fractal and the calculating method of the fractional dimension are expounded briefly, and the current situation and prospect of the fractal application in sedimentolog
Divided the gob gas in different types according to falling structure and spatial patterns of gob of the fully mechanized caving mining and analyzed its main form of harm.This passage preliminarily studied the law of unusual gush of gob gas of the fully m
The variation of the stress in the bolted surrounding rocks structure of the roadway driven along goaf in a fully mechanized top-coal caving face with moderate stable conditions are studied by using numerical calculation. The essential deformation charact
For circumstances of medium-embedding depth and medium-hard surroundings in Jining No.2 Colliery, Yanzhou Group, by using software RFPA2D to simulate the process of overburden fracture, studied the overburden separation which was caused by working face ex
The technique of data mining was provided to predict gas disaster in view of thecharacteristics of coal mine gas disaster and feature knowledge based on gas disaster.The rough set theory was used to establish data mining model of gas disaster prediction,a
Geological structure and gas expansion when gas pressure was released can affect the distribution of infrared radiation energy or temperature at coal-rock surface. From this, the foundation of roadway infrared surveying technical was formed. According to
For a safe extracting of the mine resource of the razor-thin capping rock, a study of waterproof, sand prevention, roof-fall prevention must be made. As a result, its necessary to master the engineering feature of weathering zone of bedrock. According to
The damage constitutive relation of entire rock failure process was established using the theory of representative volume element obeying the Iognormal distribution law,and the integrated damages constitutive model of rock under triaxial compression was e
Based on safety management appraisal theory, the decision system was divided into 5 function menu module, including system control module, mining coal and the tunneling working surface security evaluation module, the entire ore safety production condition
It is showed in practice that the support load and its fluctuation is large, the periodic weighting is obvious and can be divided into two kinds, the large and small pressure, sometimes the behavior of the large pressure is very violent in hard thick seam