摘要
煤层分段综放开采在急倾斜厚煤层的开采中被广泛应用,并特别适用于软煤层的开采,但在煤层硬度较大、矿山压力较小情况下,外界因素不足以使煤层自然垮落,这时就需要借助注水技术进行坚硬煤层弱化。本文结合河曲上炭水矿区13101工作面煤层状况,进行注水弱化实验研究,对该矿水力致裂注水参数进行分析,以获得较高的顶煤采出率。
Fully mechanized sublevel top-coal caving is widely used in steeply inclined thick coal seam mining, but in mining the thick coal seam with larger hardness, under the condition of smaller mine ground pressure, the external factors is not enough to make of coal seam caving, when the need for the technology weakening of hard coal seam water injection. In this paper, combined with the 13101 working face condition of shangtanshui diggings in Hequ, carried out the experimental research on the weakening of water injection, and analyzed the mine hydraulic fracturing injection parameters to obtain a higher top coal recovery rate.
出处
《山东煤炭科技》
2014年第11期25-27,共3页
Shandong Coal Science and Technology
关键词
坚硬顶煤
煤矿开采
注水弱化
水力致裂
the hard top coal
coal mining
water weakening
hydraulic fracturing
