Construction method of retaining wall by a prefabricated module panel geogrid reinforcement tailing sand

Abstract

The invention discloses a construction method of retaining wall by a prefabricated module panel geogrid reinforcement tailing sand, which belongs to the technical field of civil construction. The method comprises the steps of processing foundation, prefabricating a concrete module and a sand gravel cushion layer, carrying out the foundation construction, building panels layer by layer, laying a sand gravel reversed filter layer, geogrid reinforcement tailing sand padding and a water discharge pipe, and finally constructing a capping layer. The tailing sand is comprehensively utilized as the padding; the construction speed of the prefabricated concrete module panels is high, so that the retaining wall is good in deformation adapting capacity and stress performance; the first single-direction geogrid is laid in the tailing sand padding layer by layer, so that the stability of the wall body can be improved; two-directional geogrid and nonwoven geotechnical cloth are laid on the bottom gravel cushion layer, so that the stress and deformation can be homogenized, the rising of capillary water can be reduced, and the water discharged out of the retaining wall is filtered; The gravel reversed filter layer and the water discharge pipe, which are arranged between the panel and the tailing sand as well as the composite geotechnical cloth and one film and cement improved soil capping layer, which are laid on the top, can adjust the load on the top of the wall, so that permeation of the rainy water is reduced, and the discharge of the permeated water can be guided.

Description

technical field [0001] The invention relates to a construction method of a prefabricated modular panel geogrid reinforced tailings sand retaining wall, which belongs to the technical field of civil engineering. Background technique [0002] The retaining wall is a structure widely used in civil engineering, and it is a building structure that prevents the deformation and instability of filling or soil and withstands lateral earth pressure. Reinforced soil retaining walls are generally composed of foundations, panels, reinforcing materials, fillers and other main parts. The pressure, the tensile force of the tie bars and the friction between the filler and the tie bars interact and achieve mutual balance, which ensures the engineering performance of the geotechnical structure. [0003] Tailings are solid wastes produced during the beneficiation process of non-coal mines. With the increase of tailings stockpiles, they have become the solid wastes with the largest output and s...

AI Technical Summary

Problems solved by technology

[0007] ③ Analysis: The above-mentioned literatures all mention the application of tailings sand to subgrade structures, but no information has been retrieved on the use of tailings sand as filler for retaining walls; at the same time, there is no use of "two cloths and one membrane" composite geotextiles to isolate precipitation infiltration measure

[0011] ③ Analysis: The above literatures have researched and explained the mechanism, design and construction method of geogrid reinforced soil retaining wall, but there is no related content about using tailings sand as filler for reinforced soil retaining wall; Contents involving tailings sand used as retaining wall fill without tailings sand and geogrid forming cooperating reinforced soil mass

Images