深井低空隙率煤层注水技术研究与实践

通过对千米深井低空隙率煤层注水方式的研究，确定了适合3上煤层的注水参数、注水设备和注水工艺；研究了表面活性剂浓度与表面张力大小之间的关系、接触角与润湿效果之随的关系；确定了适合唐口煤矿的表面活性剂为0．2％～0．3％的石油磺酸钠。对1302综采工作面煤层注水后，全尘和呼吸性粉尘的沉降效率达到20％以上，取得了较好的效果。

Research and Practice of Water Injection Technology for Low Porosity Coal Seams in Deep Mines

Based on the research of water injection methods in low porosity coal seam of a 1000m deep mine,the water injection parameters,injection equipment and injection technology for the upper layer of No.3 coal seam were determined.The relationship between the concentration of surfactant and the size of surface tension and the relationship between the contact angle and the wetting effect were studied and such surfactant as petroleum sodium sulfonate of 0.2%~ 0.3% suitable for Tangkou Mine was determined,and the w...