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KR125 Project of Xuzhou Institute of Technology


Release time:

2021-07-29

In May of 13, KR125 moved to Xuzhou Institute of Technology to participate in the foundation construction of teachers' dormitory building. The pile depth varies from 24 to 27 meters, with a pile diameter of 600 to 800 meters. The stratum is mainly clay, but the sand content in the clay is relatively large, and there are 2 layers of quicksand layers of about 2 meters. During the drilling process, it is necessary to control the footage speed of a single bucket, the rotation speed of the power head, and the lifting and releasing speed of the main hoist. Reduce the disturbance to the hole wall and ensure the pile quality. The stratum above an lang = EN-US>10m is red clay with relatively large viscosity, and the stratum below 10m is strongly weathered mudstone with hardness of 5-10Mpa. Because the formation is all clay structure

In May of 13, KR125 moved to Xuzhou Institute of Technology to participate in the foundation construction of teachers' dormitory building. The pile depth varies from 24 to 27 meters, with a pile diameter of 600 to 800 meters. The stratum is mainly clay, but the sand content in the clay is relatively large, and there are 2 layers of quicksand layers of about 2 meters. During the drilling process, it is necessary to control the footage speed of a single bucket, the rotation speed of the power head, and the lifting and releasing speed of the main hoist. Reduce the disturbance to the hole wall and ensure the pile quality. The stratum above an lang = EN-US>10m is red clay with relatively large viscosity, and the stratum below 10m is strongly weathered mudstone with hardness of 5-10Mpa. Because the strata are all clay structures, the dry hole construction method is adopted. Each drilling foot is 400-500mm, and the footage is about 300mm after hitting the groundwater layer. The average hole-forming time for each hole is 1 hour and 30 minutes.

 

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