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A platform for research: civil engineering, architecture and urbanism
Method for forming earth pressure balance shield mud film of water-rich round gravel stratum
The invention discloses a method for forming an earth pressure balance shield mud film of a water-rich round gravel stratum; the method comprises the steps: puffing sodium bentonite and water according to the mass ratio of 1: 8-1:10 for the puffing time of 18-22 hours, and preparing bentonite slurry; adding the bentonite slurry into a foaming agent diluent, wherein the mass ratio of the foaming agent to the diluent is 1:2-1:4, and the concentration of the foaming agent is 3-5%; preparing bentonite mud; and covering the surface of a water-rich round gravel stratum earth pressure balance shield with the bentonite slurry, and forming the mud film. Effective muck improvement is achieved, the effect of further forming the mud film is achieved, and the sealing performance of an excavation face is improved; soil body plasticity is improved, and the stability of the excavation face is effectively improved; the friction force in muck is reduced, and the abrasion of the muck to a cutterhead and a spiral conveyor is reduced.
本申请公开了一种富水圆砾地层土压平衡盾构泥膜的形成方法，将钠基膨润土与水按照质量之比为1:8～1:10进行膨化，膨化时间为18‑22小时，制备成膨润土浆体；将膨润土浆体加入泡沫剂稀释液；泡沫剂稀释液质量比为1:2～1:4，泡沫剂浓度3～5％，制备出膨润土泥浆；将膨润土泥浆覆盖于富水圆砾地层土压平衡盾构表面，形成泥膜。实现有效的渣土改良，进一步形成泥膜作用，提高开挖面密封性；改善土体塑变性，有效提高开挖面稳定性；降低渣土内摩擦力，减少渣土对刀盘和螺旋输送机的磨损。
Method for forming earth pressure balance shield mud film of water-rich round gravel stratum
The invention discloses a method for forming an earth pressure balance shield mud film of a water-rich round gravel stratum; the method comprises the steps: puffing sodium bentonite and water according to the mass ratio of 1: 8-1:10 for the puffing time of 18-22 hours, and preparing bentonite slurry; adding the bentonite slurry into a foaming agent diluent, wherein the mass ratio of the foaming agent to the diluent is 1:2-1:4, and the concentration of the foaming agent is 3-5%; preparing bentonite mud; and covering the surface of a water-rich round gravel stratum earth pressure balance shield with the bentonite slurry, and forming the mud film. Effective muck improvement is achieved, the effect of further forming the mud film is achieved, and the sealing performance of an excavation face is improved; soil body plasticity is improved, and the stability of the excavation face is effectively improved; the friction force in muck is reduced, and the abrasion of the muck to a cutterhead and a spiral conveyor is reduced.
本申请公开了一种富水圆砾地层土压平衡盾构泥膜的形成方法，将钠基膨润土与水按照质量之比为1:8～1:10进行膨化，膨化时间为18‑22小时，制备成膨润土浆体；将膨润土浆体加入泡沫剂稀释液；泡沫剂稀释液质量比为1:2～1:4，泡沫剂浓度3～5％，制备出膨润土泥浆；将膨润土泥浆覆盖于富水圆砾地层土压平衡盾构表面，形成泥膜。实现有效的渣土改良，进一步形成泥膜作用，提高开挖面密封性；改善土体塑变性，有效提高开挖面稳定性；降低渣土内摩擦力，减少渣土对刀盘和螺旋输送机的磨损。
Method for forming earth pressure balance shield mud film of water-rich round gravel stratum
一种富水圆砾地层土压平衡盾构泥膜的形成方法
WANG JUN (author) / QUE XIAOMING (author) / FU SONGYAN (author) / WANG XIAOZHEN (author) / WU QIONG (author) / QU CHAO (author) / ZHAO BAOLIN (author) / XU CHUANDONG (author) / JIA AIDONG (author) / DONG ZIKAI (author)
2021-05-07
Patent
Electronic Resource
Chinese
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