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A platform for research: civil engineering, architecture and urbanism
High-pressure rotary jet grouting and PVC sleeve retaining wall earth surface reinforcement construction method
The invention discloses a high-pressure rotary jet grouting and PVC (polyvinyl chloride) sleeve retaining wall earth surface reinforcement construction method. The method comprises the steps of drilling, steel sleeve follow-up, PVC sleeve follow-up, replacing steel sleeves with PVC sleeves, high-pressure rotary jet grouting and consolidation body forming. According to the method, a water-proof consolidation body with certain strength is formed within a certain range on the periphery of a hole body, the purposes of reinforcing the soil body on the periphery of the hole body and reducing the permeability of the soil body are achieved, the permeability of an overlying soil layer is reduced, the mechanical index is improved, the stress state of underlying weak surrounding rock is improved, tunnel deformation is effectively controlled, and good economic and social benefits are obtained; the problem that holes are prone to collapse in complex stratums is solved, main consumables are PVC pipes and cement paste, the cost performance is high, and cost is saved; and in the rotary jet grouting process, PVC fragments are stirred into the soil body, the reinforcement effect can be achieved, and the shear resistance of the soil body is improved.
本发明公开了一种高压旋喷联合PVC套管护壁地表加固施工方法，包括钻孔、钢套管跟进、PVC套管跟进、PVC套管置换钢套管、高压旋喷注浆、固结体形成。本发明，从而在孔身周边一定范围内形成具备一定强度和隔水性固结体，达到加固孔身周边土体及降低土体渗透性目的，降低了上覆土层渗透性能、提升了力学指标，改善了下伏软弱围岩的受力状态，有效控制了隧道的变形，取得了良好的经济、社会效益；解决了复杂地层中易塌孔的难题，其主要耗材为PVC管及水泥浆，性价比高，节约成本。旋喷过程中PVC破片被搅入土体中，可起到加筋作用，改善土体抗剪性能。
High-pressure rotary jet grouting and PVC sleeve retaining wall earth surface reinforcement construction method
The invention discloses a high-pressure rotary jet grouting and PVC (polyvinyl chloride) sleeve retaining wall earth surface reinforcement construction method. The method comprises the steps of drilling, steel sleeve follow-up, PVC sleeve follow-up, replacing steel sleeves with PVC sleeves, high-pressure rotary jet grouting and consolidation body forming. According to the method, a water-proof consolidation body with certain strength is formed within a certain range on the periphery of a hole body, the purposes of reinforcing the soil body on the periphery of the hole body and reducing the permeability of the soil body are achieved, the permeability of an overlying soil layer is reduced, the mechanical index is improved, the stress state of underlying weak surrounding rock is improved, tunnel deformation is effectively controlled, and good economic and social benefits are obtained; the problem that holes are prone to collapse in complex stratums is solved, main consumables are PVC pipes and cement paste, the cost performance is high, and cost is saved; and in the rotary jet grouting process, PVC fragments are stirred into the soil body, the reinforcement effect can be achieved, and the shear resistance of the soil body is improved.
本发明公开了一种高压旋喷联合PVC套管护壁地表加固施工方法，包括钻孔、钢套管跟进、PVC套管跟进、PVC套管置换钢套管、高压旋喷注浆、固结体形成。本发明，从而在孔身周边一定范围内形成具备一定强度和隔水性固结体，达到加固孔身周边土体及降低土体渗透性目的，降低了上覆土层渗透性能、提升了力学指标，改善了下伏软弱围岩的受力状态，有效控制了隧道的变形，取得了良好的经济、社会效益；解决了复杂地层中易塌孔的难题，其主要耗材为PVC管及水泥浆，性价比高，节约成本。旋喷过程中PVC破片被搅入土体中，可起到加筋作用，改善土体抗剪性能。
High-pressure rotary jet grouting and PVC sleeve retaining wall earth surface reinforcement construction method
高压旋喷联合PVC套管护壁地表加固施工方法
ZHU SHAOPENG (author) / ZENG XIANPING (author) / YANG XIZHONG (author) / LIU YUANJIE (author) / YAO SHENGQUAN (author)
2021-05-14
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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