CN-224213057-U - Highway subgrade accumulated by using waste residues of tunnel

CN224213057UCN 224213057 UCN224213057 UCN 224213057UCN-224213057-U

Abstract

The utility model provides a highway subgrade using tunnel waste slag accumulation, wherein the outer side surface of an original subgrade is provided with a plurality of stepped platforms extending along the length direction of the original subgrade, a waste slag accumulation layer is accumulated on the outer side surface of the original subgrade, the waste slag accumulation layer is provided with geogrids corresponding to the stepped platforms, one end of each geogrid extends to the stepped platform, the other end extends to an outer inclined surface of the waste slag accumulation layer, grouting anchor rods are distributed on the waste slag accumulation layer in a plum blossom shape, and the lower ends of the grouting anchor rods longitudinally extend to the bottom surface of the subgrade. The waste slag generated in tunnel construction is used as roadbed filling, so that the recycling of resources is realized, the cost of waste slag outward transportation and the pollution to the environment are reduced, and good economic benefit and environmental benefit are realized. Through setting up structures such as step platform, geogrid, slip casting stock, dig soon stake and floor beam, strengthened the joint strength between abandon sediment pile up layer and the former road bed, improved the overall stability and the deformation resistance of road bed.

Inventors

ZHANG QIANG
WANG XINPENG
DU TIANLING
HOU RONGGUO
WEI DONG
HUANG HUADONG
XIAO YONGCHENG
LIU ZHONGYONG
WANG JIPING
Wei Zhilv
Pei Ganpeng
WANG JILIANG

Assignees

中交一公局集团有限公司
中交一公局第四工程有限公司
交通运输部公路科学研究所

Dates

Publication Date: 20260508
Application Date: 20250604

Claims (7)

1. A highway subgrade utilizing a tunnel reject pile comprising: the roadbed comprises an original roadbed, wherein the outer side surface of the original roadbed is provided with at least one step table extending along the length direction of the original roadbed; The system comprises an original roadbed, an abandoned dreg stacking layer, a geotechnical grille, a waste dreg stacking layer and a water storage layer, wherein the abandoned dreg stacking layer is stacked on the outer side face of the original roadbed, and an inclined face is arranged on the outer side of the abandoned dreg stacking layer; the plain soil layer is piled outside the waste slag piling layer; The grouting anchor rods are distributed on the waste slag accumulation layer in a plum blossom shape, and the lower ends of the grouting anchor rods longitudinally extend to the bottom surface of the roadbed.
2. The highway subgrade with tunnel waste slag accumulation according to claim 1, wherein a ramming soil layer is arranged between the elevation on the waste slag accumulation layer and the elevation on the original subgrade, and a concrete base layer corresponding to the original concrete base layer above the original subgrade is arranged above the ramming soil layer.
3. The highway subgrade utilizing tunnel reject accumulation as claimed in claim 2 wherein a barrier layer is laid between said reject accumulation layer and said rammed earth layer.
4. The highway subgrade with tunnel waste accumulation according to claim 1, wherein a drainage channel extending along the length direction of the step is paved on the step table, and the geogrid is paved above the drainage channel; The bottom of the drainage tank is provided with a drainage pipe which penetrates through the waste slag accumulation layer and the plain soil layer in a downward inclined mode.
5. The highway subgrade with tunnel waste accumulation according to claim 4, wherein a plurality of said drain pipes are uniformly distributed along the length direction of the drain grooves, and water seepage holes extending along the bus line thereof are arranged on said drain pipes; and the outer wall of the drain pipe is coated with geotextile.
6. The highway subgrade with tunnel waste residue accumulation according to claim 1, wherein a rotary digging pile is erected below the waste residue accumulation layer, and a ground beam is arranged above the rotary digging pile.
7. The highway subgrade using tunnel waste accumulation as claimed in claim 1, wherein a geogrid is laid on an inclined surface outside the waste accumulation layer.

Description

Highway subgrade accumulated by using waste residues of tunnel Technical Field The utility model belongs to the technical field of foundation construction, and particularly relates to a highway subgrade with tunnel waste slag accumulation. Background In the tunnel construction process, a large amount of waste slag can be generated, and most of traditional treatment modes are transported to a specified waste slag field, so that the transportation cost is increased, and certain influence on the surrounding environment is also possible. Meanwhile, along with the increase of traffic flow, part of roads need to be widened and reformed, a large amount of earth and stone materials are often needed in the traditional roadbed widening mode, so that the resource consumption is high and the cost is high, if the traditional roadbed widening can be carried out by accumulating waste residues in tunnels, the engineering cost can be reduced, and the influence of waste residues on the environment can be reduced. Accordingly, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art. Disclosure of utility model The utility model aims to overcome the defects in the prior art, and provides a highway subgrade using tunnel waste slag accumulation. In order to achieve the above object, the present utility model provides the following technical solutions: A highway subgrade employing tunnel reject pile comprising: the roadbed comprises an original roadbed, wherein the outer side surface of the original roadbed is provided with at least one step table extending along the length direction of the original roadbed; The system comprises an original roadbed, an abandoned dreg stacking layer, a geotechnical grille, a waste dreg stacking layer and a water storage layer, wherein the abandoned dreg stacking layer is stacked on the outer side face of the original roadbed, and an inclined face is arranged on the outer side of the abandoned dreg stacking layer; the plain soil layer is piled outside the waste slag piling layer; The grouting anchor rods are distributed on the waste slag accumulation layer in a plum blossom shape, and the lower ends of the grouting anchor rods longitudinally extend to the bottom surface of the roadbed. Preferably, a ramming soil layer is arranged between the elevation on the waste slag accumulation layer and the elevation on the original roadbed, and a concrete base layer corresponding to the original concrete base layer above the original roadbed is arranged above the ramming soil layer. Preferably, an impermeable layer is paved between the waste slag accumulation layer and the rammed earth layer. Preferably, a drainage groove extending along the length direction of the step table is paved on the step table, and the geogrid is paved above the drainage groove; The bottom of the drainage tank is provided with a drainage pipe which penetrates through the waste slag accumulation layer and the plain soil layer in a downward inclined mode. Preferably, the plurality of drain pipes are uniformly distributed along the length direction of the drain groove, and water seepage holes extending along the bus of the drain pipes are arranged on the drain pipes; and the outer wall of the drain pipe is coated with geotextile. Preferably, a rotary digging pile is erected below the waste slag accumulation layer, and a ground beam is arranged above the rotary digging pile. Preferably, a geogrid is laid on the inclined surface at the outer side of the waste slag accumulation layer. The method has the beneficial effects that the waste slag generated in tunnel construction is used as roadbed filling, so that the recycling of resources is realized, the waste slag outward transportation cost and the pollution to the environment are reduced, and good economic benefit and environmental benefit are realized. Through setting up structures such as step platform, geogrid, slip casting stock, dig soon stake and floor beam, strengthened the joint strength between abandon sediment pile up layer and the former road bed, improved the overall stability and the deformation resistance of road bed, effectively reduced the road bed inhomogeneous settlement, ensured the safe operation of highway. Drawings The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. Wherein: FIG. 1 is a schematic diagram of a road base in an embodiment of the present utility model. In the figure, 1, an original roadbed, 2, a waste slag accumulation layer, 3, a concrete base layer, 4, a plain soil layer, 5, a grouting anchor rod, 6, a drainage tank, 7, a drainage pipe, 8, a rotary digging pile, 9, a ground beam, 10, a geogrid and 11, and an impermeable layer. Detailed Description The following description of the