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随着我国经济的发展,对煤炭资源的需求量逐渐加大,这给我国的煤炭开采提出了更高的要求。但由于我国煤气层的地应力分布不均,煤层的渗透率和压力都较低,这使得煤炭层的大部分煤气资源得不到很好地开发,不仅造成煤炭资源的浪费,还给煤炭的开发带来了阻碍。在煤层开发过程中人工裂缝会被煤粉所堵塞,对煤层造成渗透性的永久伤害,使煤炭的开采量难以达到理想的状态。本文首先将深入分析煤层气的产出机理,其次,对煤粉形成原因及其对煤层气开发造成的危害进行详细地阐述,最后,提出煤层气排采过程中煤粉控制策略。
With the economic development in our country, the demand for coal resources is gradually increasing, which sets higher requirements for coal mining in our country. However, because of the uneven distribution of earth stress in coal gas layers in China, the permeability and pressure of coal seam are both low, which makes most gas resources in the coal layer not well developed. It not only results in the waste of coal resources but also gives coal Development has brought obstacles. In the process of coal seam development, artificial cracks will be clogged with coal powder, causing permanent damage to the coal seam, making the recovery of coal difficult to reach the ideal state. In this paper, the mechanism of CBM production will be analyzed in depth. Secondly, the cause of coal powder formation and its harm to CBM development will be elaborated in detail. Finally, the pulverized coal control strategy is proposed.