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Shield tunnel timed condensation backfill grouting material formula and grouting process
The invention discloses a shield tunnel timed condensation backfill grouting material formula and a grouting process. The backfill grouting material formula comprises main grout cement mortar, quick-setting grout water glass and a time control grout aluminum chloride solution. Relative to 1m < 3 > of the main slurry, the addition amount of the quick-setting grout water glass is 0.5-1.6 L, and the time control grout aluminum chloride solution is 0.5-1.6 L under the control of time. Different from the grouting process in which single-liquid grout is injected into the wall of the duct piece at one time and double-liquid grout is formed by injecting two kinds of grout behind the wall of the duct piece and mixing the two kinds of grout, the grouting process is characterized in that quick-setting grout and time control grout are mixed before main grout is injected, and after the main grout is injected into the wall of the duct piece at one time, through the chemical reaction of the quick-setting grout and the time control grout, the setting time of the grout can be accurately controlled, it is guaranteed that pipe blockage caused by condensation is avoided in the injection process, quick setting is achieved within 0.5-2.0 hours, and the problems that the single-liquid setting time is too long, and double-liquid grout is prone to pipe blockage and difficult to control are solved.
本发明公开了一种盾构隧道定时凝结的壁后注浆材料配方及注浆工艺，该壁后注浆材料配方包括主浆液水泥砂浆，速凝浆液水玻璃和时间控制浆液氯化铝溶液；相对于1m3主浆液，速凝浆液水玻璃添加量为0.5L‑1.6L，时间控制浆液氯化铝溶液为0.5‑1.6L之间。不同于单液浆一次将注浆液注入管片壁后，双液浆是两种浆液分别注入在管片壁后混合的注浆工艺，本发明的注浆工艺是在主浆液注入之前掺入速凝浆液和时间控制浆液，通过一次性注浆注入管片壁后，通过速凝浆和时间控制浆的化学反应，能够准确地控制浆液的凝结时间，保证注入过程中不发生凝结堵管以及在0.5‑2.0小时内迅速凝结，解决了单液凝结时间过长、双液浆易于堵管不好控制的问题。
Shield tunnel timed condensation backfill grouting material formula and grouting process
The invention discloses a shield tunnel timed condensation backfill grouting material formula and a grouting process. The backfill grouting material formula comprises main grout cement mortar, quick-setting grout water glass and a time control grout aluminum chloride solution. Relative to 1m < 3 > of the main slurry, the addition amount of the quick-setting grout water glass is 0.5-1.6 L, and the time control grout aluminum chloride solution is 0.5-1.6 L under the control of time. Different from the grouting process in which single-liquid grout is injected into the wall of the duct piece at one time and double-liquid grout is formed by injecting two kinds of grout behind the wall of the duct piece and mixing the two kinds of grout, the grouting process is characterized in that quick-setting grout and time control grout are mixed before main grout is injected, and after the main grout is injected into the wall of the duct piece at one time, through the chemical reaction of the quick-setting grout and the time control grout, the setting time of the grout can be accurately controlled, it is guaranteed that pipe blockage caused by condensation is avoided in the injection process, quick setting is achieved within 0.5-2.0 hours, and the problems that the single-liquid setting time is too long, and double-liquid grout is prone to pipe blockage and difficult to control are solved.
本发明公开了一种盾构隧道定时凝结的壁后注浆材料配方及注浆工艺，该壁后注浆材料配方包括主浆液水泥砂浆，速凝浆液水玻璃和时间控制浆液氯化铝溶液；相对于1m3主浆液，速凝浆液水玻璃添加量为0.5L‑1.6L，时间控制浆液氯化铝溶液为0.5‑1.6L之间。不同于单液浆一次将注浆液注入管片壁后，双液浆是两种浆液分别注入在管片壁后混合的注浆工艺，本发明的注浆工艺是在主浆液注入之前掺入速凝浆液和时间控制浆液，通过一次性注浆注入管片壁后，通过速凝浆和时间控制浆的化学反应，能够准确地控制浆液的凝结时间，保证注入过程中不发生凝结堵管以及在0.5‑2.0小时内迅速凝结，解决了单液凝结时间过长、双液浆易于堵管不好控制的问题。
Shield tunnel timed condensation backfill grouting material formula and grouting process
一种盾构隧道定时凝结的壁后注浆材料配方及注浆工艺
ZHU WEI (author) / LU KAIJUN (author) / XING HUITANG (author) / CHONG JIXIN (author) / SUN ZHANGANG (author) / LIU HAO (author) / LIU YI (author) / QIANG JUAN (author)
2022-01-18
Patent
Electronic Resource
Chinese
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