3 results about "Frost line" patented technology

A pile for being driven into soil includes a shaft and a frost sleeve (upheaval resistant sleeve) surrounding the shaft. The frost sleeve (upheaval resistant sleeve) is located on the shaft between a top of the soil and a frost line. The pile further includes a grout disruption (separation) plate. The grout disruption (separation) plate is located at the frost line.

This utility model discloses a continuous water supply device, including a water supply trough and a water storage tank. The water storage tank has a double-layered hollow structure with an insulation layer filling the space between the two layers. A water inlet pipe is welded to one end of the water storage tank, extending to the ground. A water supply pipe is welded to the end of the water storage tank away from the water inlet pipe, extending to the ground as well. The end of the water supply pipe away from the water storage tank is bolted to the water supply trough. A water pump is bolted to the end of the water supply trough near the water supply pipe, and the water pump is bolted to the water supply pipe. The water storage tank is installed below the frost line, utilizing geothermal energy for natural insulation. The tank walls are made of stainless steel for durability. The insulation layer is made of high-efficiency insulation materials such as polyurethane foam, which greatly reduces heat exchange between the ground and the surface, ensuring the water source does not become too cold in winter.

The application discloses an uphill wind snow-preventing device and method with hierarchical turbulence and energy dissipation, and belongs to the technical field of railway wind and snow disaster prevention. The device comprises a snow-blocking wall composed of a vertical section, an arc section and a horizontal section; a plurality of radial short baffles with increasing lengths are arranged in the concave inner side of the arc section along the curvature radius direction, forming a grid-shaped turbulence structure; a Venturi-type flow collector is vertically arranged at the connection between the arc section and the horizontal section. The bottom of the snow-blocking wall is fixed to a concrete foundation buried below the frost line through flanges, and the front side is provided with a snow accumulation pit with an elevation lower than the original ground surface. Through the multi-stage synergistic effect of primary settlement of the snow accumulation pit, active turbulence energy dissipation of the radial short baffles and accelerated injection interference of the Venturi-type flow collector, the device can efficiently consume the wind and snow flow energy, promote the widespread dispersion and settlement of snow particles, and effectively solve the technical problems of reduction of the effective height of the traditional snow-preventing device and easy accumulation at the root of the uphill railway section. The device has the advantages of simple structure, no need for external energy, good stability and suitability for long-term prevention and treatment of wind-blowing snow along the railway.