A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Micro-expansive cement curtain grouting construction method for sand gravel dam foundation
The invention provides a micro-expansive cement curtain grouting construction method for a sand gravel dam foundation, which comprises the following steps: S10, surveying and setting out, and actually measuring the axis of a curtain grouting hole; s20, a drilling machine is in place; s30, a first section is drilled according to the designed hole diameter, and grouting hole arrangement is included; the method further comprises the step of pore forming. S40, drilling, crack washing and water pressing test are carried out; s50, first-section grouting is carried out; grouting adopts a top-to-bottom or bottom-to-top circulating segmented grouting method; s60, grouting end standards are set; s70, drilling and grouting a next grouting section, and repeating the steps S50 and S60; s80, according to the final hole standard and hole sealing, whether the final hole standard is met or not is determined, if yes, hole sealing is conducted, and after grouting is finished, a segmented pressure grouting hole sealing method is adopted for hole sealing; otherwise, returning to the step S70; the construction method has the beneficial effects that the construction method is simple and easy, operation is convenient and fast, good applicability is achieved, and the anti-seepage effect of curtain grouting is improved.
本发明提供了一种用于砂砾石坝基采用微膨胀水泥帷幕灌浆施工方法，该方法包括以下的步骤：S10、测量放线，对帷幕灌浆孔轴线进行实测；S20、钻机就位；S30、按设计孔径钻第一段，包括灌浆孔布置的步骤；还包括造孔的步骤；S40、钻孔、裂缝冲洗以及压水试验；S50、第一段灌浆；灌浆采用自上而下或自下而上循环分段灌浆法；S60、灌浆结束标准；S70、钻灌下一个灌浆段落，重复上述的步骤S50和S60；S80、终孔标准与封孔，确认是否达到终孔标准，如是则进行封孔：灌浆结束后，采用分段压力灌浆封孔法封孔；否则返回至步骤S70；本发明的有益效果是：施工方法简易，操作便捷，有较好的适用性,提高帷幕灌浆的防渗效果。
Micro-expansive cement curtain grouting construction method for sand gravel dam foundation
The invention provides a micro-expansive cement curtain grouting construction method for a sand gravel dam foundation, which comprises the following steps: S10, surveying and setting out, and actually measuring the axis of a curtain grouting hole; s20, a drilling machine is in place; s30, a first section is drilled according to the designed hole diameter, and grouting hole arrangement is included; the method further comprises the step of pore forming. S40, drilling, crack washing and water pressing test are carried out; s50, first-section grouting is carried out; grouting adopts a top-to-bottom or bottom-to-top circulating segmented grouting method; s60, grouting end standards are set; s70, drilling and grouting a next grouting section, and repeating the steps S50 and S60; s80, according to the final hole standard and hole sealing, whether the final hole standard is met or not is determined, if yes, hole sealing is conducted, and after grouting is finished, a segmented pressure grouting hole sealing method is adopted for hole sealing; otherwise, returning to the step S70; the construction method has the beneficial effects that the construction method is simple and easy, operation is convenient and fast, good applicability is achieved, and the anti-seepage effect of curtain grouting is improved.
本发明提供了一种用于砂砾石坝基采用微膨胀水泥帷幕灌浆施工方法，该方法包括以下的步骤：S10、测量放线，对帷幕灌浆孔轴线进行实测；S20、钻机就位；S30、按设计孔径钻第一段，包括灌浆孔布置的步骤；还包括造孔的步骤；S40、钻孔、裂缝冲洗以及压水试验；S50、第一段灌浆；灌浆采用自上而下或自下而上循环分段灌浆法；S60、灌浆结束标准；S70、钻灌下一个灌浆段落，重复上述的步骤S50和S60；S80、终孔标准与封孔，确认是否达到终孔标准，如是则进行封孔：灌浆结束后，采用分段压力灌浆封孔法封孔；否则返回至步骤S70；本发明的有益效果是：施工方法简易，操作便捷，有较好的适用性,提高帷幕灌浆的防渗效果。
Micro-expansive cement curtain grouting construction method for sand gravel dam foundation
用于砂砾石坝基采用微膨胀水泥帷幕灌浆施工方法
ZHANG KAICHENG (author) / ZHAO DEHAI (author) / YOU HAISONG (author) / ZHANG YU (author) / YAO TINGTAO (author) / JIA CHUNLING (author)
2022-11-25
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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