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METHOD OF PERFORMINING MINING WORK IN TECTONICALLY HAZARDED SEDIMENTARY DEPOSITS IN PARTICULAR OF COAL
METHOD OF PERFORMINING MINING WORK IN TECTONICALLY HAZARDED SEDIMENTARY DEPOSITS IN PARTICULAR OF COAL
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机译:在煤特别是构造危险的沉积物中进行采矿工作的方法
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摘要
The system is e.g. for mining coal from an underground seam without allowing roof falls, rock bursts etc. The rate of mining and the sequence of cutting the coal is optimised to avoid applying excessive stress to the rock strata as the settle into the void left by the removal of the coal. Easing of the strain on the strata reduces the likelihood of sudden escapes of gas, e.g. fire damp, choke damp etc. Flat or linear regions may be pre-drilled to induce resilience and reduce stress.
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