Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cement-polyurethane composite grouting material suitable for reinforcing compact soft rock and preparation method of cement-polyurethane composite grouting material
The invention belongs to the technical field of disaster prevention and control of tunnel and underground engineering, and particularly relates to a cement-polyurethane composite grouting material suitable for reinforcing compact soft rock and a preparation method of the cement-polyurethane composite grouting material. The composite grouting material is mainly formed by mixing permeation cross-linking liquid and pulp vein framework liquid. Wherein the permeation cross-linking liquid is formed by mixing a grouting material component A and a grouting material component B. The preparation method comprises the following steps: carrying out prepolymerization reaction on polyisocyanate and polyether polyol to obtain a semi-prepolymer, and adding a diluent and a catalyst into the semi-prepolymer to obtain a grouting material component A; a surfactant, a retarder and water are mixed, and a grouting material component B is obtained; cement and water are uniformly mixed in proportion, and the pulp vein skeleton liquid is obtained. According to the cement-polyurethane composite grouting material and the preparation method thereof provided by the invention, a permeation-splitting composite reinforcement effect can be realized when grouting is performed on a dense soft rock unfavorable geological section with strong compactness and poor permeability, and a slurry preparation process and grouting operation steps are simpler, more convenient and more efficient.
本发明属于隧道与地下工程灾害防控技术领域，具体涉及一种适用于致密软岩加固的水泥‑聚氨酯复合注浆材料及其制备方法。所述复合注浆材料主要由渗透交联液和浆脉骨架液混合而成。其中，渗透交联液由注浆材料A组分和注浆材料B组分混合形成。将多异氰酸酯与聚醚多元醇进行预聚合反应获得半预聚体，再向半预聚体中添加稀释剂和催化剂，得到注浆材料A组分；将表面活性剂、缓凝剂与水混合，得到注浆材料B组分；将水泥与水按比例混合均匀，得到浆脉骨架液。本发明提供的水泥‑聚氨酯复合注浆材料及其制备方法，在致密性强、渗透性差的致密软岩不良地质段进行注浆时能够实现渗透‑劈裂复合加固效果，且浆液制备工艺、注浆操作步骤更加简便高效。
Cement-polyurethane composite grouting material suitable for reinforcing compact soft rock and preparation method of cement-polyurethane composite grouting material
The invention belongs to the technical field of disaster prevention and control of tunnel and underground engineering, and particularly relates to a cement-polyurethane composite grouting material suitable for reinforcing compact soft rock and a preparation method of the cement-polyurethane composite grouting material. The composite grouting material is mainly formed by mixing permeation cross-linking liquid and pulp vein framework liquid. Wherein the permeation cross-linking liquid is formed by mixing a grouting material component A and a grouting material component B. The preparation method comprises the following steps: carrying out prepolymerization reaction on polyisocyanate and polyether polyol to obtain a semi-prepolymer, and adding a diluent and a catalyst into the semi-prepolymer to obtain a grouting material component A; a surfactant, a retarder and water are mixed, and a grouting material component B is obtained; cement and water are uniformly mixed in proportion, and the pulp vein skeleton liquid is obtained. According to the cement-polyurethane composite grouting material and the preparation method thereof provided by the invention, a permeation-splitting composite reinforcement effect can be realized when grouting is performed on a dense soft rock unfavorable geological section with strong compactness and poor permeability, and a slurry preparation process and grouting operation steps are simpler, more convenient and more efficient.
本发明属于隧道与地下工程灾害防控技术领域，具体涉及一种适用于致密软岩加固的水泥‑聚氨酯复合注浆材料及其制备方法。所述复合注浆材料主要由渗透交联液和浆脉骨架液混合而成。其中，渗透交联液由注浆材料A组分和注浆材料B组分混合形成。将多异氰酸酯与聚醚多元醇进行预聚合反应获得半预聚体，再向半预聚体中添加稀释剂和催化剂，得到注浆材料A组分；将表面活性剂、缓凝剂与水混合，得到注浆材料B组分；将水泥与水按比例混合均匀，得到浆脉骨架液。本发明提供的水泥‑聚氨酯复合注浆材料及其制备方法，在致密性强、渗透性差的致密软岩不良地质段进行注浆时能够实现渗透‑劈裂复合加固效果，且浆液制备工艺、注浆操作步骤更加简便高效。
Cement-polyurethane composite grouting material suitable for reinforcing compact soft rock and preparation method of cement-polyurethane composite grouting material
一种适用于致密软岩加固的水泥-聚氨酯复合注浆材料及其制备方法
YANG LEI (Autor:in) / WANG PAI (Autor:in) / MA CHENYANG (Autor:in) / LIU RENTAI (Autor:in) / TU WENFENG (Autor:in) / WANG XIAOLONG (Autor:in) / HU HAO (Autor:in) / MI XIANGYUN (Autor:in)
23.02.2024
Patent
Elektronische Ressource
Chinesisch
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