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Sleeve valve pipe grouting method suitable for deep covering layer permanent curtain
The invention provides a sleeve valve pipe grouting method suitable for a deep covering layer permanent curtain. The method includes the following steps that a clamping plug is put in a sleeve valve pipe of a current grouting section; a loop is opened; induction water injection is carried out, wherein after the loop is opened, high-pressure water is continuously injected into the grouting pipe atthe water injection pressure larger than or equal to the induction pressure; when it is judged that the induction water injection state reaches an induction ending condition, induction water injectionends; and grouting is carried out according to the induction water injection condition. The requirements of grouting under complex unknown geological conditions are met, an induction water injectionmethod is adopted, the current geological environment is checked, a grouting passageway is broken through, and then the curtain with enough thickness is formed under the single-row hole condition; andas the sleeve valve pipe is used, repeated grouting can be achieved, overall long-term, safe and stable operation of a dam is facilitated, and meanwhile the requirements of geological condition analysis, opening of the grouting passageway and guiding of selection of slurry are met.
本申请提供一种适用于深厚覆盖层永久性帷幕的套阀管灌浆方法，包括以下步骤：在当前灌浆段的套阀管内下入卡塞；开环；诱导注水：开环后以大于等于诱导压力的注水压力持续往所述灌浆管内注入高压水；判断诱导注水状态达到诱导结束条件时，结束诱导注水；根据诱导注水情况进行灌浆。本申请满足了复杂未知地质条件下灌浆的需求，采用诱导注水法，即检验了当前的地质环境，又打通了灌浆通道，继而在单排孔条件下形成了足够厚度的帷幕，且由于使用套阀管，可反复灌浆，利于大坝整体长期、安全、稳定运行，同时满足地质条件解析、打开灌浆通道、指导选择浆材三方面的需求。
Sleeve valve pipe grouting method suitable for deep covering layer permanent curtain
The invention provides a sleeve valve pipe grouting method suitable for a deep covering layer permanent curtain. The method includes the following steps that a clamping plug is put in a sleeve valve pipe of a current grouting section; a loop is opened; induction water injection is carried out, wherein after the loop is opened, high-pressure water is continuously injected into the grouting pipe atthe water injection pressure larger than or equal to the induction pressure; when it is judged that the induction water injection state reaches an induction ending condition, induction water injectionends; and grouting is carried out according to the induction water injection condition. The requirements of grouting under complex unknown geological conditions are met, an induction water injectionmethod is adopted, the current geological environment is checked, a grouting passageway is broken through, and then the curtain with enough thickness is formed under the single-row hole condition; andas the sleeve valve pipe is used, repeated grouting can be achieved, overall long-term, safe and stable operation of a dam is facilitated, and meanwhile the requirements of geological condition analysis, opening of the grouting passageway and guiding of selection of slurry are met.
本申请提供一种适用于深厚覆盖层永久性帷幕的套阀管灌浆方法，包括以下步骤：在当前灌浆段的套阀管内下入卡塞；开环；诱导注水：开环后以大于等于诱导压力的注水压力持续往所述灌浆管内注入高压水；判断诱导注水状态达到诱导结束条件时，结束诱导注水；根据诱导注水情况进行灌浆。本申请满足了复杂未知地质条件下灌浆的需求，采用诱导注水法，即检验了当前的地质环境，又打通了灌浆通道，继而在单排孔条件下形成了足够厚度的帷幕，且由于使用套阀管，可反复灌浆，利于大坝整体长期、安全、稳定运行，同时满足地质条件解析、打开灌浆通道、指导选择浆材三方面的需求。
Sleeve valve pipe grouting method suitable for deep covering layer permanent curtain
一种适用于深厚覆盖层永久性帷幕的套阀管灌浆方法
ZONG DUNFENG (author) / GUO WANHONG (author) / SUN LIANG (author) / HAN WEI (author) / XIAO ENSHANG (author) / ZHAO MINGHUA (author) / XU WENFENG (author) / YU YUNLONG (author) / TANG YUSHU (author) / JIANG ZHIYONG (author)
2020-08-11
Patent
Electronic Resource
Chinese
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