49 results about "Geotechnics" patented technology

A composite for geotechnics and building, with an impermeable layer, comprising a sheet element that is impermeable to fluids and has, monolithically therewith, elements that protrude on the first and second faces, on at least one of the faces there being a layer that is integrally coupled to the protruding elements to form, at the first and / or second faces, two separate drainage and / or protection and / or grip systems adapted to withstand intense compression along a direction that is substantially perpendicular to the sheet element.

The invention relates to a strong pressure type sludge deep dehydration system, belonging to the technical field of environmental geotechnics. The strong pressure type sludge deep dehydration system is composed of a stroke support, a front top plate, a rear top plate, a shrinking steel rod, a piston grouting pump, a discharging plate and more than two arranged dehydrating units; According to the strong pressure type sludge deep dehydration system, the piston grouting pump is adopted to grout under strong pressure, so that a problem that sludge with low moisture content is difficultly fed is solved; the dehydrating units have shrinking functions and can realize sludge deep dehydration under strong pushing action of a hydraulic oil cylinder; the discharging plate can be used for discharging the dehydrated sludge automatically under the cooperative action of the shrinking steel rod and a mechanical arm; the whole system can realize continuous and automatic operation, and the time and labor costs are saved; and the strong pressure type mechanical dehydration mode is adopted, the energy consumption is low, the effect is good, the dehydration treatment cost is reduced and the follow-up sludge disposal way is expanded.

The invention discloses a model experimental device for piping damage development process of embankment project sandy soil, belonging to the field of physical model experiments of water conservancy projects. The model experimental device comprises three parts, namely a box-shaped experimental instrument, a varying head water supply device and a data acquisition device. The model experimental device can be used for simulating the seepage field change caused by seepage deformation until damage of the dyke-based sandy soil in the embankment project and erosion deformation of the sandy soil and representing the forming and developing process of piping damage of dyke-based sandy soil in the embankment project more reasonably. By adjusting types of an experimental soil sample, the piping damagephenomena of various dyke bases in the embankment project such as uniform dyke base, a dual-layer dyke base, a multilayer dyke base and the like can be simulated; and by adopting a mode of gradually increasing the water head and changing the position (the length of a seepage path) of a piping port, the piping damage and development processes under various hydraulic conditions in embankments of rivers can be simulated. The model experimental device is applicable to scientific research on piping damage relevant to embankment projects, provides guidance for design of actual embankment projects or can be used for teaching experiments of water conservancy project and gotechnical engineering disciplines.