2results about How to "Smooth grouting" patented technology

This invention relates to the technical field of grouting construction methods, specifically a method for grouting the bottom of a diaphragm wall trench, comprising the following steps: S1: excavating a trench on the natural ground; S2: lowering a reinforcing cage into the trench; S3: fabricating grouting pipes, ensuring their length exceeds the height of the reinforcing cage. The grouting pipes are composed of several grouting pipe units spliced ​​together with joints, maintaining a sealed contact between the grouting pipe units and the joints. During installation, all joints are tightened, and the lowering process is stable. By establishing a clear correspondence between the number of grouting pipes and the trench length, uniform grouting reinforcement is ensured for the toe areas of walls of different sizes. Simultaneously, the use of grouting pipe joints with specific threaded structures and sealing processes, along with specified binding and fixing methods to the main reinforcing bars of the reinforcing cage, enhances the integrity and sealing of the grouting pipes in complex construction environments, effectively preventing pipe detachment, breakage, and grout leakage, thus guaranteeing the final usability of the grouting channel.

This invention discloses a method for directional grouting repair of scour-filled areas in wharf foundations, comprising: S1, conducting surveys and data collection of the area to be grouted before directional grouting; S2, designing a grouting scheme, including: S21, estimating the required grouting volume for the area to be grouted; S22, designing the grouting hole positions and spacing; S23, initially assessing the grouting influence radius under given grouting pressure and flow rate conditions, thereby guiding the hole spacing and grouting volume distribution; S24, designing an upper limit for grouting pressure, ensuring that the upper limit is less than the critical rupture pressure of the soil or less than the allowable bearing capacity of the wharf structure; S3, selecting grouting materials and proportioning them; S4, carrying out grouting construction, including: S41, drilling; S42, test grouting; S43, formal grouting; S5, monitoring and quality assessment. This invention enables precise filling and foundation reinforcement of scour-filled areas.