5results about How to "Reduce hydrostatic pressure" patented technology

The utility model belongs to the technical field of retaining wall, disclose a water conservancy building retaining wall, including retaining wall, backfill and concrete bottom plate, the retaining wall inside is equipped with the water outlet pipe, backfill inside is equipped with the drainage blind ditch, drainage blind ditch inside is equipped with the filter structure, drainage blind ditch is connected with the water outlet pipe through the connecting structure, set up drainage blind ditch and water permeable geotextile when backfilling backfill, reduce the water level of backfill layer upper end to drainage blind ditch lower end, the water of upper end is through drainage blind ditch and flows to water permeable net pipe, the silt that enters water permeable net pipe is reduced through the filtration of blind ditch gravel and geotextile, again due to the water of inside flow of water permeable net pipe can take away trace silt, thereby avoid the deposition of silt and cause the blockage, the water in water permeable net pipe is taken away through the water outlet pipe that is preburied in retaining wall, thereby reduce the hydrostatic pressure of backfill to retaining wall.

This utility model discloses a highly permeable retaining wall structure for road cuts. The structure includes a wall body segmented with settlement joints, an internal drainage system, and a multi-stage reverse filtration drainage system along the entire height of the wall back. The multi-stage reverse filtration drainage system, from the wall body towards the backfill soil, consists of a permeable geotextile isolation layer, a first-stage coarse gravel reverse filtration layer, a second-stage medium gravel reverse filtration layer, and a third-stage fine gravel reverse filtration layer. Geogrids are installed between each reverse filtration layer, and a permeable geotextile isolation layer is also installed between the third-stage fine gravel reverse filtration layer and the backfill soil. The drainage system includes multiple rows of drainage pipes extending into the first-stage coarse gravel reverse filtration layer, each with permeable geotextile filter sleeves at its inlet ends. This utility model, through the combination of multi-layer reverse filtration and three-dimensional drainage, forms a highly efficient and clogging-resistant drainage channel, rapidly draining water accumulated behind the wall, greatly reducing hydrostatic pressure, and significantly improving the long-term stability and safety of the retaining wall.

The invention discloses a light bus mixed line electrophoresis method, which belongs to the technical field of automobile manufacturing, and comprises the following steps: mounting a supporting structure below a roof cross beam in a bus body; hoisting the vehicle body above the electrophoresis bearing platform and then adjusting the vehicle body; increasing the opening degree of a door body at the tail of the vehicle body to a set door opening angle; a whole vehicle heightening bracket is arranged between the electrophoresis bearing platform and the bottom of the vehicle body; a first lifting component and a second lifting component are arranged between the vehicle body and the whole vehicle heightening support, the second lifting component is higher than the first lifting component, and the vehicle body is in an inclined posture with the front portion low and the rear portion high. And after the supporting structure, the whole vehicle heightening support, the first lifting component, the second lifting component and the vehicle body are connected in a fastening mode, electrophoresis is conducted. The problems that a roof of a light bus is prone to deformation and the interior of the light bus is prone to cavitation in deep pool mixed line electrophoresis of a large bus are solved, repair after electrophoresis is avoided, and the production takt time and the anti-corrosion quality of a bus body are guaranteed.

The utility model relates to the technical field of slope retaining, and discloses an assembly type recoverable retaining wall device which comprises a positioning assembly, a retaining assembly, a greening assembly and a closing assembly, and the positioning assembly is made of reinforced concrete; the positioning assembly is placed on a concrete cushion layer; the positioning assembly comprises a wall toe and a clamping groove, and the clamping groove is rectangular; according to the retaining wall, the positioning assemblies, the wall toes, the clamping grooves, the soil retaining assemblies and the clamping pipes are arranged, the anti-sliding capacity of the foundation is remarkably enhanced through the design of the wall toes of the positioning assemblies, the clamping grooves and the clamping pipes of the soil retaining assemblies are fixedly connected in an embedded mode to form an overall stress system, the anti-overturning performance of the retaining wall is greatly improved, and through the stacked inserting design of the multiple layers of soil retaining assemblies, loads are transmitted through self weight; the structure stress distribution is optimized, the number of layers (such as 3-8 layers) of the soil retaining assemblies can be dynamically adjusted according to the height of the slope, the landform requirements of different engineering scenes are flexibly met, and the modularization adaptability is effectively improved.

The invention relates to the technical field of metal material connection, in particular to a glue riveting connection control system and method, and is used for connecting a plate mechanism which comprises a first plate, a glue solution layer and a second plate which are arranged in the thickness direction of the plate mechanism. The glue riveting connection control system comprises a punch mechanism, a positioning mold, a blank holder mechanism, fluid guiding structures and a control mechanism, the symmetrical fluid guiding structures are arranged on the opposite surfaces of a blank holder body and the positioning mold, the fluid guiding structures communicate with the external environment, and in the glue riveting process, the fluid guiding structures are connected with the punch mechanism. A pressure difference is formed between a high-pressure area generated by the glue solution layer due to pressure and the external environment, so that glue solution in the glue solution layer can directionally flow along the fluid guide structure, hydrostatic pressure generated by the glue solution layer is reduced, the geometric accuracy and the connection quality of a formed connecting piece after glue riveting connection are improved, and the service life of the connecting piece is prolonged. And meanwhile, while the glue liquid discharging efficiency is guaranteed, the uniform glue liquid layer thickness is kept, and the bonding strength of the glue riveting connection process is improved.