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A platform for research: civil engineering, architecture and urbanism
Grouting method for preventing stratum soil loss or ground surface settlement
The invention discloses a grouting method for preventing stratum soil loss or ground surface settlement, and relates to the technical field of buildings. Comprising the following steps that S1, grouting pipes are evenly distributed in the shield tail steel plate of the shield tunneling machine in the up-down and left-right directions; s2, during shield tunneling, when a gap appears at the shield tail in the tunneling process, synchronous grouting is conducted immediately, and grout is injected into the gap at the shield tail; when the grouting pressure reaches the designed pressure and the grouting amount reaches the designed grouting amount, synchronous grouting is ended; s3, the shield continues to advance, after the lining segment is separated from the shield tail, secondary grouting is carried out behind the wall, one hole is injected into each ring of segment, and a grouting pipe is made to inject into a gap between the segment and the soil body from the grouting hole of the segment; and when the grouting pressure reaches the designed pressure and the grouting amount reaches 150% of the calculated void amount, secondary grouting is ended. Early-stage stability is provided for the duct piece, the duct piece and surrounding rock mass are integrated, control over the shield tunneling direction is facilitated, and the final stability of a shield tunnel can be ensured.
本发明公开了一种防止地层土量损失或地表沉降的注浆方法，涉及建筑技术领域。包括如下步骤：S1:在盾构机的盾尾钢板内按上下左右方向各均布一个注浆管；S2：盾构推进时，当掘进过程中盾尾出现空隙时立即进行同步注浆，使浆液在盾尾处注入空隙；当注浆压力达到设计压力，注浆量达到设计注浆量时结束同步注浆；S3：盾构继续推进，当衬砌管片脱出盾尾后，进行壁后二次注浆，每环管片注一个孔，使得注浆管从管片的注浆孔内向管片与土体之间的空隙中注入；当注浆压力达到设计压力，注浆量达到计算空隙量的150％时，结束二次注浆。本发明为管片提供早期的稳定并使管片与周围岩体一体化，有利于盾构掘进方向的控制，并能确保盾构隧道的最终稳定。
Grouting method for preventing stratum soil loss or ground surface settlement
The invention discloses a grouting method for preventing stratum soil loss or ground surface settlement, and relates to the technical field of buildings. Comprising the following steps that S1, grouting pipes are evenly distributed in the shield tail steel plate of the shield tunneling machine in the up-down and left-right directions; s2, during shield tunneling, when a gap appears at the shield tail in the tunneling process, synchronous grouting is conducted immediately, and grout is injected into the gap at the shield tail; when the grouting pressure reaches the designed pressure and the grouting amount reaches the designed grouting amount, synchronous grouting is ended; s3, the shield continues to advance, after the lining segment is separated from the shield tail, secondary grouting is carried out behind the wall, one hole is injected into each ring of segment, and a grouting pipe is made to inject into a gap between the segment and the soil body from the grouting hole of the segment; and when the grouting pressure reaches the designed pressure and the grouting amount reaches 150% of the calculated void amount, secondary grouting is ended. Early-stage stability is provided for the duct piece, the duct piece and surrounding rock mass are integrated, control over the shield tunneling direction is facilitated, and the final stability of a shield tunnel can be ensured.
本发明公开了一种防止地层土量损失或地表沉降的注浆方法，涉及建筑技术领域。包括如下步骤：S1:在盾构机的盾尾钢板内按上下左右方向各均布一个注浆管；S2：盾构推进时，当掘进过程中盾尾出现空隙时立即进行同步注浆，使浆液在盾尾处注入空隙；当注浆压力达到设计压力，注浆量达到设计注浆量时结束同步注浆；S3：盾构继续推进，当衬砌管片脱出盾尾后，进行壁后二次注浆，每环管片注一个孔，使得注浆管从管片的注浆孔内向管片与土体之间的空隙中注入；当注浆压力达到设计压力，注浆量达到计算空隙量的150％时，结束二次注浆。本发明为管片提供早期的稳定并使管片与周围岩体一体化，有利于盾构掘进方向的控制，并能确保盾构隧道的最终稳定。
Grouting method for preventing stratum soil loss or ground surface settlement
一种防止地层土量损失或地表沉降的注浆方法
DONG CHUANZHOU (author) / LIU AILIAN (author) / WANG TIANJING (author) / XU ZHEN (author) / CHEN ZIWEI (author) / WANG MENG (author)
2022-09-09
Patent
Electronic Resource
Chinese
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