Coal seam gas drainage is not only the effective measure for gas outbursts control, but also
has the great significance for the use of gas energy and reduction of greenhouse-gas …

Hydraulic flushing (HF) is an efficient technique for improving coal mine gas extraction.
Although much research has been conducted in recent decades, many problems on its …

Low permeability is the main constraint on the high-efficiency coalbed methane recovery in
deep coal seams. Hydraulic slotting has been proved to be a favorable method to stimulate …

With the increase of coal extracting depth, a considerable number of dynamic disasters
display the co-occurrence and coupling effect of rockburst and coal–gas outburst, which is …

Gas drainage in boreholes is characterized as an essential means to control abnormal gas
emissions during mining. Unfortunately, its drainage efficiency is terribly restricted by high in …

Anisotropy is a very typical observation in the intrinsic bedding structure of coal. To study the
influence of anisotropy of coal structure and stress state on the evolution of permeability, a …

In order to study the effect of temperature on the adsorption separation characteristics of CH
4/N 2 mixtures, activated carbons (AC) were prepared from low-rank bituminous coal by …

Gas outburst is a serious disaster in deep mining. In this paper, we first study the effect of
water content on gas outburst, and found that increasing the water content of coal can …

Gas and coal outbursts seriously threaten the safe and effective production of coal mines
with low-permeability and high-gas coal seams. To solve this problem, a hydraulic flushing …

Gas extraction in destressed coal seams is one of the effective measures to improve
degasification efficiency and reduce gas disasters in deep coal seams. In order to reveal the …