impacts of coal shrinkage, permeability and petrography on gas regime in mines case study: tahmoor coal mine, nsw, australia

نویسندگان

n. i. aziz

i. porter

f. sereshki

چکیده

the volumetric changes in the coal matrix (coal shrinkage), permeability under various gas environment conditions as well as perographical properties were studied in the laboratory. the shrinkage and permeability of coal were examined with respect to changing gas type and confining pressures. the shrinkage tests were carried out in high-pressure bombs while the permeability study was conducted in a specially constructed high-pressure chamber. methane (ch4), carbon dioxide (co2), nitrogen, (n2) and a 50% -50% volume mixture of co2/ch4 gas were used in the study. the tests showed that under different pressure levels gas type affected permeability and shrinkage characteristics of coal. this paper presents a case study of tahmoor colliery, nsw, australia and an overall discussion on coal shrinkage, permeability and coal petrography data of tahmoor that permits a better understanding of the gas regime in this mine. the results are important to the further understanding of the inter-relationship between gas flow, the coal matrix and permeability in ‘normal’ and ‘tight’ coal conditions (locally referred to as disturbed coal).

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Impacts of coal shrinkage, permeability and petrography on gas regime in mines Case study: Tahmoor coal mine, NSW, Australia

The volumetric changes in the coal matrix (Coal Shrinkage), permeability under various gas environment conditions as well as perographical properties were studied in the laboratory. The shrinkage and permeability of coal were examined with respect to changing gas type and confining pressures. The shrinkage tests were carried out in high-pressure bombs while the permeability study was conducted ...

متن کامل

Impacts of coal shrinkage, permeability and petrography on gas regime in mines Case study: Tahmoor coal mine, NSW, Australia

The volumetric changes in the coal matrix (Coal Shrinkage), permeability under various gas environment conditions as well as perographical properties were studied in the laboratory. The shrinkage and permeability of coal were examined with respect to changing gas type and confining pressures. The shrinkage tests were carried out in high-pressure bombs while the permeability study was conducted ...

متن کامل

Investigating the effect of fractures on unusual gas emission in coal mines; case study of Parvadeh coal mine, Iran

In the present study, an investigation was carried out on Parvadeh coal mine in Tabas, Iran, to survey the effect of fractures on unusual methane gas emission in coal mines. This coal mine was chosen for investigating because of its high methane gas content in the coal body and available data from sensors in desired locations. Gas concentration monitoring programs were carried out at the mine s...

متن کامل

investigating the effect of fractures on unusual gas emission in coal mines; case study of parvadeh coal mine, iran

in the present study, an investigation was carried out on parvadeh coal mine in tabas, iran, to survey the effect of fractures on unusual methane gas emission in coal mines. this coal mine was chosen for investigating because of its high methane gas content in the coal body and available data from sensors in desired locations. gas concentration monitoring programs were carried out at the mine s...

متن کامل

Nutrition Of Coal Mine Workers ( A Case Study Of Korba Coal Mines , Chhattisgarh )

Coal mining with perspective of health is a crucial area in India. The health condition of mine workers including women and children is one of the most serious impacts of mining. Workers not only suffers from external environmental situation of mines also they faces reduction in quality of life due to denial of access of food availability livelihoods. India, in this aspect poses a much more dan...

متن کامل

Study of Gas Environment Impacts on Volumetric Coal Matrix Changes

The Outburst can be defined as a sudden release of coal and rock accompanied by large quantities of gas into the underground coal mine workings which represents a major hazard in underground coal mines. Gas drainage has been proven to be successful in reducing outburst hazards by decreasing the in-situ gas pressure. One of aspect of gas drainage from coal seams is coal matrix volume changes. Cu...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
journal of mining and environment

ناشر: university of shahrood

ISSN 2251-8592

دوره Volume 1

شماره Number 1 2010

کلمات کلیدی

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023