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基于在重庆天府矿业有限责任公司三汇一矿2124综采工作面的现场实验,对该矿钻屑量与矿山压力、瓦斯压力的关系进行了研究.表明工作面经过钻孔卸压后的矿山压力分布规律:卸压区宽度约为5 m,5～11 m为塑性区,11～20 m为弹性区,20 m以后为原始应力区.在严格按照操作规程要求施钻的前提下,钻屑量在矿山应力峰值前呈线性增加,峰值后呈线性减少.结合长壁工作面矿山压力、瓦斯压力分布规律理论分析,推导出钻屑量与矿山压力、瓦斯压力之间存在正相关关系;在固定瓦斯压力时,钻屑量随着矿山压力正向变化;在相同矿山压力时,钻屑量随着瓦斯压力正向变化.
Based on the field experiment of 2124 fully mechanized coal mining face in the first mine of Sanhui, Chongqing Tianfu Mining Co., Ltd., the relationship between the amount of drill cuttings and the pressure of mine and gas pressure was studied, which shows that the working face passes through the borehole pressure relief mine Pressure distribution: The pressure relief zone has a width of about 5 m, a plastic zone of 5 to 11 m, an elastic zone of 11 to 20 m, and an initial stress zone of 20 m. Under the premise of rigorous application of operating procedures, The amount of the cuttings increases linearly before the peak of the mine stress and decreases linearly after the peak value.According to the theoretical analysis of the mine pressure and gas pressure distribution on the longwall face, it is deduced that there is a positive correlation between the cuttings amount and the mine pressure and the gas pressure. When gas pressure is fixed, the amount of drill cuttings changes positively with the mine pressure; at the same mine pressure, drill cuttings amount varies positively with gas pressure.