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A platform for research: civil engineering, architecture and urbanism
Down-the-hole drill covering layer dam core wall filling grouting ultra-deep drilling construction method
The embodiment of the invention discloses a down-the-hole drill covering layer dam core wall filling grouting ultra-deep drilling construction method. The method comprises the following steps of measuring and positioning, and determining the position of a grouting hole. The down-the-hole drill is used for drilling to the position of the first node by adopting a first-diameter casing pipe for drilling. And casing-following drilling is conducted, specifically, the casing-following drilling technology is adopted at the first node position, and in the first-diameter casing pipe, a second-diameter casing pipe is adopted to continue drilling to the grouting position. And the diameter of the second-diameter sleeve is smaller than that of the first-diameter sleeve. And checking and accepting the final hole, namely checking and accepting the hole inclination and the hole depth of the grouting hole. According to the down-the-hole drill covering layer dam core wall filling grouting ultra-deep drilling construction method, in the drilling process, according to the drilling depth and the complex geological condition, the pipe-following drilling technology is adopted; the construction method can guarantee high hole-forming rate of drilling, shorten construction time and reduce hole fault risks, so that the construction method can be suitable for various complex geological conditions.
本发明实施例公开了一种潜孔钻覆盖层大坝心墙充填灌浆超深钻孔施工方法，其包括如下步骤：测量定位，确定灌浆孔位置。潜孔钻开孔，采取第一直径套管开孔钻进至第一节点位置处。跟管钻进，在第一节点位置处采取跟管钻进技术，在第一直径套管内，采取第二直径套管继续钻进至灌浆位置处。其中，第二直径套管的直径小于第一直径套管的直径。以及，终孔验收，对灌浆孔孔斜和孔深进行验收。本发明实施例的潜孔钻覆盖层大坝心墙充填灌浆超深钻孔施工方法在钻孔过程中根据钻孔深度和地质情况复杂情况，采取此种跟管钻进技术，能保证钻孔成孔率高、缩短施工时间、降低了孔故风险使得本申请的施工方法可以适用于多种复杂的地质条件。
Down-the-hole drill covering layer dam core wall filling grouting ultra-deep drilling construction method
The embodiment of the invention discloses a down-the-hole drill covering layer dam core wall filling grouting ultra-deep drilling construction method. The method comprises the following steps of measuring and positioning, and determining the position of a grouting hole. The down-the-hole drill is used for drilling to the position of the first node by adopting a first-diameter casing pipe for drilling. And casing-following drilling is conducted, specifically, the casing-following drilling technology is adopted at the first node position, and in the first-diameter casing pipe, a second-diameter casing pipe is adopted to continue drilling to the grouting position. And the diameter of the second-diameter sleeve is smaller than that of the first-diameter sleeve. And checking and accepting the final hole, namely checking and accepting the hole inclination and the hole depth of the grouting hole. According to the down-the-hole drill covering layer dam core wall filling grouting ultra-deep drilling construction method, in the drilling process, according to the drilling depth and the complex geological condition, the pipe-following drilling technology is adopted; the construction method can guarantee high hole-forming rate of drilling, shorten construction time and reduce hole fault risks, so that the construction method can be suitable for various complex geological conditions.
本发明实施例公开了一种潜孔钻覆盖层大坝心墙充填灌浆超深钻孔施工方法，其包括如下步骤：测量定位，确定灌浆孔位置。潜孔钻开孔，采取第一直径套管开孔钻进至第一节点位置处。跟管钻进，在第一节点位置处采取跟管钻进技术，在第一直径套管内，采取第二直径套管继续钻进至灌浆位置处。其中，第二直径套管的直径小于第一直径套管的直径。以及，终孔验收，对灌浆孔孔斜和孔深进行验收。本发明实施例的潜孔钻覆盖层大坝心墙充填灌浆超深钻孔施工方法在钻孔过程中根据钻孔深度和地质情况复杂情况，采取此种跟管钻进技术，能保证钻孔成孔率高、缩短施工时间、降低了孔故风险使得本申请的施工方法可以适用于多种复杂的地质条件。
Down-the-hole drill covering layer dam core wall filling grouting ultra-deep drilling construction method
一种潜孔钻覆盖层大坝心墙充填灌浆超深钻孔施工方法
YUAN WEI (author) / HE DENGQIANG (author) / WANG HAIBO (author) / LIU BAOZHU (author) / WANG SHUOCHENG (author)
2023-03-31
Patent
Electronic Resource
Chinese
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