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Curtain grouting construction process suitable for karst geology dam project
The invention relates to the field of curtain grouting, and discloses a curtain grouting construction process suitable for a karst geology dam project, which is characterized by comprising the following steps: S1, measuring and positioning: determining a plurality of rows of curtain grouting holes on a dam body corridor; s2, pilot hole drilling is carried out, a segmented water pressing test is carried out on a pilot hole, a rock core is stored, and geological data are recorded; s3, common holes are drilled, a geological core drilling machine is adopted for drilling, and the geological core drilling machine adopts a rotary drilling machine to be matched with a hard alloy or diamond drill bit for drilling and hole forming; s4, a water pressure test and grouting are conducted, specifically, the water pressure test is conducted on a curtain grouting hole, when faults and the like are found in drill holes, pasty grout is introduced for grouting to form a barrier layer, and drilling is conducted after solidification is conducted for a period of time; and S5, grouting effect inspection is conducted, specifically, after curtain grouting construction is completed for 14 days, an inspection hole is drilled, an inspection hole rock core is detected, and a water pressing experiment is conducted on the inspection hole. The problem that after fault and karst grouting, the anti-seepage performance is poor can be solved.
本发明涉及帷幕灌浆领域，公开了一种适应喀斯特地质水坝工程的帷幕灌浆施工工艺，其特征在于包括以下步骤：S1：测量定位,在坝体廊道上确定帷幕灌浆的孔位，帷幕灌浆孔数量为多排；S2：先导孔钻孔，对先导孔进行分段压水试验，保存岩芯并记录地质数据；S3：普通孔钻孔，钻孔采用地质岩芯钻机，地质岩芯钻机采用回转式钻机配合硬质合金或者金刚石钻头进行钻进成孔；S4：压水试验和灌浆，对帷幕灌浆孔进行压水试验，钻孔中发现断层等，通入膏状浆液进行灌注形成阻隔层，待凝固一段时间再钻进；S5：灌浆效果检查，帷幕灌浆灌浆施工完成14天后，打设检查孔，检测检查孔岩芯及对检查孔进行压水实验。以提供一种能够解决断层、岩溶灌浆后防渗性较差的问题。
Curtain grouting construction process suitable for karst geology dam project
The invention relates to the field of curtain grouting, and discloses a curtain grouting construction process suitable for a karst geology dam project, which is characterized by comprising the following steps: S1, measuring and positioning: determining a plurality of rows of curtain grouting holes on a dam body corridor; s2, pilot hole drilling is carried out, a segmented water pressing test is carried out on a pilot hole, a rock core is stored, and geological data are recorded; s3, common holes are drilled, a geological core drilling machine is adopted for drilling, and the geological core drilling machine adopts a rotary drilling machine to be matched with a hard alloy or diamond drill bit for drilling and hole forming; s4, a water pressure test and grouting are conducted, specifically, the water pressure test is conducted on a curtain grouting hole, when faults and the like are found in drill holes, pasty grout is introduced for grouting to form a barrier layer, and drilling is conducted after solidification is conducted for a period of time; and S5, grouting effect inspection is conducted, specifically, after curtain grouting construction is completed for 14 days, an inspection hole is drilled, an inspection hole rock core is detected, and a water pressing experiment is conducted on the inspection hole. The problem that after fault and karst grouting, the anti-seepage performance is poor can be solved.
本发明涉及帷幕灌浆领域，公开了一种适应喀斯特地质水坝工程的帷幕灌浆施工工艺，其特征在于包括以下步骤：S1：测量定位,在坝体廊道上确定帷幕灌浆的孔位，帷幕灌浆孔数量为多排；S2：先导孔钻孔，对先导孔进行分段压水试验，保存岩芯并记录地质数据；S3：普通孔钻孔，钻孔采用地质岩芯钻机，地质岩芯钻机采用回转式钻机配合硬质合金或者金刚石钻头进行钻进成孔；S4：压水试验和灌浆，对帷幕灌浆孔进行压水试验，钻孔中发现断层等，通入膏状浆液进行灌注形成阻隔层，待凝固一段时间再钻进；S5：灌浆效果检查，帷幕灌浆灌浆施工完成14天后，打设检查孔，检测检查孔岩芯及对检查孔进行压水实验。以提供一种能够解决断层、岩溶灌浆后防渗性较差的问题。
Curtain grouting construction process suitable for karst geology dam project
一种适应喀斯特地质水坝工程的帷幕灌浆施工工艺
CHAI SHAOQIANG (author) / CAI DONGBO (author) / ZHANG HAN (author) / LI CHUNZAO (author) / YAN DONGJIE (author) / LIU XIAOQIANG (author) / JIANG JUNBO (author) / SU KEJING (author)
2023-10-31
Patent
Electronic Resource
Chinese
Construction process for karst grouting of karst section
| European Patent Office | 2022