论文部分内容阅读
煤层瓦斯压力快速测定过程中必须进行高压注浆封堵钻孔围岩裂隙,以隔绝钻孔的封孔段与围岩裂隙的连通,准确测定瓦斯压力。分析了钻孔围岩性质、常用注浆材料的性能参数和注意事项,为合理确定注浆液、注浆压力、预估注浆量提供了参考依据,以便能够经济、优质、快速、准确地完成封堵测压任务。
In the process of rapid determination of gas pressure in coal seam, high pressure grouting must be used to seal off the cracks in the surrounding rock and cut off the communication between the sealing section of the borehole and the fracture of the surrounding rock so as to accurately measure the gas pressure. This paper analyzes the properties of surrounding rock in drilling and the performance parameters and precautions of commonly used grouting materials, which provides a reference for the reasonable determination of grouting fluid, grouting pressure and estimated grouting amount so as to be economical, high quality, fast and accurate Complete sealing pressure measurement task.