Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for grouting reinforcement of urban road roadbed in fly ash accumulation site
The invention discloses a construction method for grouting reinforcement of an urban road roadbed in a fly ash accumulation site, which belongs to the technical field of roadbed reinforcement treatment of a fly ash accumulation site, and comprises the following steps of: determining a construction target position, cleaning the site, measuring and setting out to determine hole positions of grouting holes for piling and grouting, and manufacturing grouting pipes; forming holes by adopting a spiral drilling machine, wherein the depth range of the drilled holes penetrating through a fly ash soil layer to the position below an undisturbed soil layer is 0.4-0.6 m, the diameter length range of the grouting holes is 80-100 mm, and the distance between the grouting holes is 1 m, and cleaning the holes after the holes are formed; placing the grouting pipes into the cleaned grouting holes, filling evenly the space around the grouting pipes in the holes with sand, and sealing hole sealing pipes in the range of 1 m above the hole openings with blended cement mortar; 24h after grouting and hole sealing are conducted, using pure cement paste for pressure grouting and monitoring the grouting pressure value, wherein the grouting construction sequence is from the periphery to the middle, and hole separation construction is carried out. The purposes of improving the foundation bearing capacity and the deformation resistance and improving the engineering instability characteristic are achieved, the treatment time is shortened, and the treatment cost is reduced.
本发明公开了一种粉煤灰堆积场地城市道路路基注浆加固施工工法，属于粉煤灰堆积场地的路基加固处理技术领域，包括确立施工目标位置，清理场地，测量放线确定打桩注浆的注浆孔孔位，并制作注浆管，采用螺旋钻机成孔，钻孔穿越粉煤灰土层至原状土层以下深度范围为0.4‑0.6m，注浆孔直径长度范围为80‑100mm,注浆孔间距1m，成孔后清孔，将清理后的注浆孔放入注浆管，在孔内的注浆管周围均匀填砂，在孔口上部1m范围内的封孔管使用调和之后的水泥砂浆封孔，注浆封孔24h后，使用纯水泥浆进行压力注浆，监控注浆压力值，注浆施工顺序为先周边再中间，进行隔孔施工，达到提高地基承载力、抗变形能力、改良工程不稳定特性的目的，减少了处理时长，降低处理费用。
Construction method for grouting reinforcement of urban road roadbed in fly ash accumulation site
The invention discloses a construction method for grouting reinforcement of an urban road roadbed in a fly ash accumulation site, which belongs to the technical field of roadbed reinforcement treatment of a fly ash accumulation site, and comprises the following steps of: determining a construction target position, cleaning the site, measuring and setting out to determine hole positions of grouting holes for piling and grouting, and manufacturing grouting pipes; forming holes by adopting a spiral drilling machine, wherein the depth range of the drilled holes penetrating through a fly ash soil layer to the position below an undisturbed soil layer is 0.4-0.6 m, the diameter length range of the grouting holes is 80-100 mm, and the distance between the grouting holes is 1 m, and cleaning the holes after the holes are formed; placing the grouting pipes into the cleaned grouting holes, filling evenly the space around the grouting pipes in the holes with sand, and sealing hole sealing pipes in the range of 1 m above the hole openings with blended cement mortar; 24h after grouting and hole sealing are conducted, using pure cement paste for pressure grouting and monitoring the grouting pressure value, wherein the grouting construction sequence is from the periphery to the middle, and hole separation construction is carried out. The purposes of improving the foundation bearing capacity and the deformation resistance and improving the engineering instability characteristic are achieved, the treatment time is shortened, and the treatment cost is reduced.
本发明公开了一种粉煤灰堆积场地城市道路路基注浆加固施工工法，属于粉煤灰堆积场地的路基加固处理技术领域，包括确立施工目标位置，清理场地，测量放线确定打桩注浆的注浆孔孔位，并制作注浆管，采用螺旋钻机成孔，钻孔穿越粉煤灰土层至原状土层以下深度范围为0.4‑0.6m，注浆孔直径长度范围为80‑100mm,注浆孔间距1m，成孔后清孔，将清理后的注浆孔放入注浆管，在孔内的注浆管周围均匀填砂，在孔口上部1m范围内的封孔管使用调和之后的水泥砂浆封孔，注浆封孔24h后，使用纯水泥浆进行压力注浆，监控注浆压力值，注浆施工顺序为先周边再中间，进行隔孔施工，达到提高地基承载力、抗变形能力、改良工程不稳定特性的目的，减少了处理时长，降低处理费用。
Construction method for grouting reinforcement of urban road roadbed in fly ash accumulation site
一种粉煤灰堆积场地城市道路路基注浆加固施工工法
MA WEIJIA (Autor:in) / ZHANG JIFENG (Autor:in) / LI ZONGJIE (Autor:in) / LIU HONGYANG (Autor:in) / ZHANG ZHIYUAN (Autor:in)
15.10.2021
Patent
Elektronische Ressource
Chinesisch
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