Protect casing of rotary driling rig construction
Advantages:
1.No mud discharge, truly green and environmental protection.
2.Solve the problem of the wall protection and drilling of the rotary drilling rig in the complex sand layer, fluid plastic silt layer, backfill layer, pebble layer, etc.
3.There is no effect of mud and sediment caused by mud wall protection on the weakening of the bearing capacity of the bored pile,so that the lateral friction resistance and bearing capacity of the pile are greatly improved compared with other pile types.
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