An in-situ study of the spontaneous movement of water in a coal seam
- 22 Downloads
Increase in moisture content due to spontaneous movement of water in a coal seam depends on the “voids ratio” of the coal, and increases or decreases with the voids ratio.
There is marked spontaneous movement of water in the solid coal. For example, in 19 days the water penetrates a distance of about 0.9 m, and in a month more than 1.5 m.
The law governing movement of the increased-wetness front in the coal in situ is the same as that found in laboratory conditions.
In “wetting” a seam, account must be taken of spontaneous movement of water in the coal.
To increase the size of the wetted portions of the coal, and the uniformity and quality of its saturation, the wetted seam should be left for a time with the borehole connected to the water mains.
KeywordsCoal Seam Void Ratio Spontaneous Movement Borehole Wall Moisture Increase
Unable to display preview. Download preview PDF.
- 1.V. V. Khodot, Calculation of the Parameters of Advanced Boreholes for Prevention of Sudden Outbursts, In Symposium: Problems in Mine Ventilation [in Russian], Moscow, Gosgortekhizdat (1959).Google Scholar
- 2.V. V. Khodot, Sudden Outbursts of Coal and Gas [in Russian], Moscow, Gosgortekhizdat (1961).Google Scholar
- 3.V. V. Khodot, Some Questions in the Theory of Sudden Outbursts of Coal and Gas. In Symposium: Scientific Investigations in the Field of Prevention of Sudden Outbursts of Coal and Gas [in Russian], Moscow, Ugletekhizdat (1958).Google Scholar
- 4.O. I. Chernov, Development of a Method of Joint Countermeasures against Coal Dust, Shock Bumps, Gas Emission, Sudden Outbursts of Coal and Gas, and Spontaneous Fires in Coal Seams, In Symposium: Injection of Water into Coal Seams [in Russian], Moscow, Nedra (1965).Google Scholar