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A platform for research: civil engineering, architecture and urbanism
Sleeve valve pipe reverse grouting method suitable for deep thick covering layer permanent curtain
The invention provides a sleeve valve pipe reverse grouting method suitable for a deep thick covering layer permanent curtain. A second-order hole of the permanent curtain adopts sleeve valve pipe grouting, and the method comprises the following steps that a clamp plug is lowered into a sleeve valve pipe of a current grouting segment; a ring is opened until water inlet is stable; water is injectedinto a grouting pipe, the ring opening pressure is achieved, a slurry stop ring outside the sleeve valve pipe and a sleeve shell material are broken through, and the water is injected into a stratum;chemical slurry grouting is carried out, wherein chemical slurry is injected into the grouting pipe at the set pressure; if the grouting pressure in chemical slurry grouting is suddenly reduced or the injection rate is suddenly increased, grouting liquid is replaced into a cement base material from the chemical slurry; and the cement base material is poured until an ending standard is near, and chemical slurry grouting is replaced. The reverse grouting sequence that chemical grouting is superior to cement base material grouting is adopted in the second-order hole grouting, a reverse ladder grouting is formed, and micro gaps, large gaps and channels preliminarily formed in a water stop curtain can be effectively blocked.
本申请提供一种适用于深厚覆盖层永久性帷幕的套阀管反向灌浆方法，所述永久性帷幕的二序孔采用套阀管灌浆，包括以下步骤：在当前灌浆段的套阀管内下入卡塞；开环直至进水稳定：往灌浆管内注水并达到开环压力，以将套阀管外的止浆环和套壳料冲开，将水注入地层中；化学浆灌注：以设定压力往灌浆管内注入化学浆；若化学浆灌注中灌注压力突降或注入率突增，则将灌浆液由化学浆更换为水泥基材料；水泥基材料灌注至将近结束标准时再更换为化学浆灌注。本申请对二序孔灌浆中采用化学灌浆先于水泥基材灌浆的反向灌浆顺序，形成反向梯次灌浆，有效地将初步形成的阻水帷幕中的微小缝隙、大缝隙及通道均进行了封堵。
Sleeve valve pipe reverse grouting method suitable for deep thick covering layer permanent curtain
The invention provides a sleeve valve pipe reverse grouting method suitable for a deep thick covering layer permanent curtain. A second-order hole of the permanent curtain adopts sleeve valve pipe grouting, and the method comprises the following steps that a clamp plug is lowered into a sleeve valve pipe of a current grouting segment; a ring is opened until water inlet is stable; water is injectedinto a grouting pipe, the ring opening pressure is achieved, a slurry stop ring outside the sleeve valve pipe and a sleeve shell material are broken through, and the water is injected into a stratum;chemical slurry grouting is carried out, wherein chemical slurry is injected into the grouting pipe at the set pressure; if the grouting pressure in chemical slurry grouting is suddenly reduced or the injection rate is suddenly increased, grouting liquid is replaced into a cement base material from the chemical slurry; and the cement base material is poured until an ending standard is near, and chemical slurry grouting is replaced. The reverse grouting sequence that chemical grouting is superior to cement base material grouting is adopted in the second-order hole grouting, a reverse ladder grouting is formed, and micro gaps, large gaps and channels preliminarily formed in a water stop curtain can be effectively blocked.
本申请提供一种适用于深厚覆盖层永久性帷幕的套阀管反向灌浆方法，所述永久性帷幕的二序孔采用套阀管灌浆，包括以下步骤：在当前灌浆段的套阀管内下入卡塞；开环直至进水稳定：往灌浆管内注水并达到开环压力，以将套阀管外的止浆环和套壳料冲开，将水注入地层中；化学浆灌注：以设定压力往灌浆管内注入化学浆；若化学浆灌注中灌注压力突降或注入率突增，则将灌浆液由化学浆更换为水泥基材料；水泥基材料灌注至将近结束标准时再更换为化学浆灌注。本申请对二序孔灌浆中采用化学灌浆先于水泥基材灌浆的反向灌浆顺序，形成反向梯次灌浆，有效地将初步形成的阻水帷幕中的微小缝隙、大缝隙及通道均进行了封堵。
Sleeve valve pipe reverse grouting method suitable for deep thick covering layer permanent curtain
一种适用于深厚覆盖层永久性帷幕的套阀管反向灌浆方法
ZONG DUNFENG (author) / WANG XIAOFEI (author) / GUO WANHONG (author) / SUN LIANG (author) / ZHAO MINGHUA (author) / SHI FENG (author) / LI WENSHU (author) / JIANG ZHIYONG (author) / FU CHENG (author) / ZHANG JIAJUN (author)
2020-08-11
Patent
Electronic Resource
Chinese
Sleeve valve pipe grouting method suitable for deep covering layer permanent curtain
| European Patent Office | 2020
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