施工注意事项钻进过程需检查冲锤、钢丝绳、卡扣卡环等的完好情况,防止掉锤;控制泥浆的相对密度、含砂率等指标,以及中间因故停顿时的反浆情况,防止塌孔;复测桩位的偏移情况,冲进钢丝绳的对中,防止斜孔。防止掉锤的措施防止掉锤首先要确保设备完好。其次,须制定严格的检查制度(含检查的内容及标准)。若检查时作业人员提升冲锤至孔口,则要冲水检查冲锤、锤牙的完整性,是否有裂纹,并检查冲锤的直径。若有开裂或磨损则加焊修补或更换处 Construction Notes Drilling process to check the hammer, wire rope, buckle clasp and so on the intact situation, to prevent the hammer; control the relative density of mud, sand rate and other indicators, and the middle of the pause when the pause for some reason, to prevent Collapse holes; re-test pile offset, rushed into the rope alignment, to prevent slant holes. Prevent hammer off measures to prevent the hammer off first to ensure that the equipment intact. Second, we must develop a strict inspection system (including inspection of the content and standards). If the inspector raises the hammer to the orifice, flush it to check the integrity of the hammer, hammer teeth, cracks, and check the diameter of the hammer. If there is cracking or wear welding repair or replacement