An initial study of the risk of coal-roof water flow based on the “three maps two predictions” method

Abstract

Purpose

The purpose of study is to develop methods for damage prevention and production safety.

Design/methodology/approach

In this study, water aquifers in various districts of the Merlin Temple coal-mining area number 3-1 were examined using a fuzzy comprehensive evaluation. Using FLAC-3D software, a three-dimensional numerical model based on the geological conditions of the first mining area was built to produce a numerical simulation of the fissure-zone and caving development in the area.

Findings

The simulation results, together with the traditional empirical formula, were used to produce a contour map of the distribution of these characteristics. This enabled areas to be classified according to various safety factors.

Originality/value

On the basis of the water richness in the area, coal-roof aquifers and the safety factors of different districts, as well as comprehensive coal-roof water-flow conditions and their associated dangers could be better understood.

Citation

Yingbin, G., Xinghen, W. and Shengwen, G. (2017), "An initial study of the risk of coal-roof water flow based on the “three maps two predictions” method", World Journal of Engineering, Vol. 14 No. 2, pp. 121-126. https://doi.org/10.1108/WJE-12-2016-0173