Method for Stimulating Underground Coal Gasification

被引：2

作者：

Sadovenko, I. A. ^{[1
]}

Inkin, A. V. ^{[1
]}

机构：

[1] Natl Min Univ Ukraine, UA-49600 Dnipro, Ukraine

来源：

JOURNAL OF MINING SCIENCE | 2018年 / 54卷 / 03期

关键词：

Underground coal gasification; heat flow; aquifer; heated water;

D O I：

10.1134/S1062739118033941

中图分类号：

TD [矿业工程];

学科分类号：

0819 ;

摘要：

The mathematical model of heat flow and transfer in roof rocks of underground gas gasifier during coal gasification is developed and tested. In terms of geological conditions in the Olkhovo-Nizhnee site (industrial region in Donbass), in Mathcad environment, convective and conductive components of heat flow from reaction channel to upper-lying aquifer are determined. The change in the heat flow from the reaction channel and in the ground water temperature is estimated depending on impermeable layer thickness and water well yield. It is found that after underground coal gasification, water-bearing sandstones accumulate more than 60% of heat migrating from gasifier to enclosing rock mass. It is shown that withdrawal and use of water heated during underground coal gasification will enhance efficiency of the process by 18-25% subject to thickness of partition layer.

引用

页码：514 / 521

页数：8