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陆浑灌区第二期除险加固工程中,采用灌浆除险加固所占的比例很大。造孔是灌注浆液的前期工序,孔位的选择、造孔的优劣、浆液的比重以及孔口压力的控制是影响灌浆质量的四大要素,造孔的质量将直接影响着灌浆的效果。造孔分机械造孔和人工造孔,这里着重介绍一下人工造孔技术。1 人工造孔的优越性人工造孔是采用人力借助简单的设备进行造孔的方法。具有易操作性、灵活性和易感性等特点。不受地理环境的限制,无论是渠道的堤顶、渠底、边坡,只要人能到且能站得住,都可造孔。土质的好坏,松软或坚硬,通过执杆者对锥头的反应及锥杆的进度即可知该处的地质情况。在造孔要求不深的情况下(造孔深度在10～15延米),采用人工造孔,因其除劳动力外,只消
Lu Hun Irrigation District Phase II reinforcement project, the use of grouting reinforcement accounted for a large proportion. Pore making is the pre-process of pouring slurry. The choice of hole location, the advantages and disadvantages of hole making, the proportion of slurry and the orifice pressure control are the four major factors that affect the quality of grouting. The quality of the hole making will directly affect the grouting effect. Hole making Mechanical hole making and artificial hole, here focuses on the artificial hole making technology. 1 The advantages of artificial hole Artificial hole is the use of manpower with simple equipment for making holes. With ease of operation, flexibility and susceptibility features. Not limited by the geographical environment, both the channel embankment, canal bottom, slope, as long as people can and can stand, can create a hole. Soil quality is good or bad, soft or hard, through the pole to the cone of the reaction and the progress of the cone that the geological conditions. In the case of less demanding hole-making (hole depth of 10 to 15 meters), artificial hole, because of its labor, only