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CN-121976439-A - Geocell composite pavement structure and rapid construction method

CN121976439ACN 121976439 ACN121976439 ACN 121976439ACN-121976439-A

Abstract

The invention discloses a geotechnical grid composite pavement structure and a rapid construction method, which relate to the technical field of mine roadway engineering construction, wherein a geotechnical grid reinforced waste base layer is arranged at the top of a compacted roadbed, an isolation layer is arranged at the top of the geotechnical grid reinforced waste base layer, a thin-layer fiber reinforced concrete surface layer is arranged at the top of the isolation layer, underground tunneling waste rock is directly adopted as pavement main materials (filling materials in a grid), the bidirectional transportation cost of lifting the materials out of a well and then conveying the materials into concrete is saved, meanwhile, the thickness of the concrete surface layer can be reduced by 40% -50%, the underground transportation quantity of cement, sand and stone and other commodity building materials is directly and greatly reduced, the bearing capacity is high, the durability is good, the geotechnical grid is high in bearing capacity, uneven sedimentation is small, the fiber reinforced thin-layer concrete has excellent bending resistance, impact resistance and fatigue resistance, and is particularly suitable for heavy load and dynamic load impact of underground dump trucks (such as load 20-30 ton equipment).

Inventors

  • XING CHUAN
  • GAO WANSHAN
  • MA HUAJUN
  • SU TONG
  • DING CHAOQUN
  • CHEN RUI
  • LU LIN

Assignees

  • 湖南涟邵建设工程(集团)有限责任公司

Dates

Publication Date
20260505
Application Date
20260306

Claims (6)

  1. 1. The geocell composite pavement structure is characterized by comprising a compacted roadbed (1); the soil engineering cell reinforcing solid waste base layer (2) is arranged at the top of the compacted roadbed (1), the isolating layer (3) is arranged at the top of the soil engineering cell reinforcing solid waste base layer (2), and the thin-layer fiber reinforced concrete surface layer (4) is arranged at the top of the isolating layer (3).
  2. 2. The geocell composite pavement structure according to claim 1, wherein the geocell reinforced solid waste substrate (2) comprises geocells (21), and underground solid waste filling materials (22) are uniformly filled in the high-strength geocells (21).
  3. 3. The geocell composite pavement structure according to claim 2, wherein the filler in the geocell reinforced solid waste substrate (2) is gangue or waste stone generated in the underground tunneling process.
  4. 4. The geocell composite pavement structure according to claim 1, wherein the thickness of the thin-layer fiber reinforced concrete surface layer (4) is 80-150 mm, and steel fibers or synthetic fibers are doped in the thin-layer fiber reinforced concrete surface layer, and no reinforcing mesh is arranged.
  5. 5. The geocell composite pavement structure according to claim 1, wherein simplified anchors (5) for fixation are provided within the geocells (21).
  6. 6. The rapid construction method of the geocell composite pavement structure according to any one of claims 1 to 5, wherein the method comprises the following steps: firstly, preparing and compacting a roadway bottom plate to form a compacted roadbed (1); step two, paving a geocell (21) and fixing by adopting a simplified anti-slip connection structure (5); step three, layering and filling underground solid waste filling materials (22) into the geocell (21) and compacting to form a reinforced solid waste base layer (2); Fourthly, paving an isolation layer (3) on the reinforced solid waste base layer (2); Pouring a thin fiber reinforced concrete surface layer (4) on the isolation layer (3), and curing and molding.

Description

Geocell composite pavement structure and rapid construction method Technical Field The invention relates to the technical field of mine roadway engineering construction, in particular to a geocell composite pavement structure and a rapid construction method. Background In deep mine underground roadways, traditional concrete pavements (such as C30 concrete) are widely used due to high strength and good wear resistance. However, this conventional approach presents a significant bottleneck: 1. The material transportation pressure is huge, and a large amount of commercial building materials such as cement, sand and the like are consumed for pouring the concrete pavement with the conventional thickness (usually more than or equal to 250 mm), and the materials are completely transported from the ground to the underground by a mine hoisting system. For mines (such as the scenes aimed at by the invention) with saturated or limited lifting capacity, the mine has become a restriction link for restricting production connection and expansion. 2. The cost is high, the construction efficiency is low, the cost of outsourcing concrete is high, the underground pouring and maintenance period is long, and the rapid putting into use of the roadway is affected. 3. The underground solid waste, namely a huge amount of gangue and waste stones generated by mine tunneling, are not utilized, and are usually lifted to the ground for treatment, so that ineffective lifting burden and environmental protection pressure are increased. In the prior art, although there are researches on using geocells for reinforcing ground roadbeds (for example, research on bearing characteristics of reinforced cement concrete pavement of geocells), the starting point is to improve the performance of conventional pavement, but the basic contradiction of material supply under special underground environment is not solved. The structure still generally adopts a conventional thick concrete panel, the radical reduction of materials is not realized, and the adaptability of the underground space, equipment and in-situ materials is not considered. Therefore, it is highly desirable to develop a novel pavement structure and construction method that can greatly reduce the dependence on the lifting and transporting system while meeting the heavy-load traffic requirements in the pit. Disclosure of Invention This section is intended to summarize some aspects of embodiments of the application and to briefly introduce some preferred embodiments, which may be simplified or omitted in this section, as well as the description abstract and the title of the application, to avoid obscuring the objects of this section, description abstract and the title of the application, which is not intended to limit the scope of this application. The present invention has been made in view of the above and/or problems occurring in the prior art. In order to achieve the above purpose, the present invention provides the following technical solutions: A geocell composite pavement structure includes compacted roadbed; The top of compaction road bed is provided with geotechnique's check room and adds the solid useless basic unit of muscle, and geotechnique's check room adds the top of the solid useless basic unit of muscle and is provided with the isolation layer, and the top of isolation layer is provided with thin layer fiber reinforced concrete surface course. Further, the geocell reinforced solid waste base layer comprises geocells, and underground solid waste filling materials are uniformly filled in the high-strength geocells. Further, the filling material in the geocell reinforced solid waste base layer is gangue or waste stone generated in the underground tunneling process. Further, the thickness of the thin-layer fiber reinforced concrete surface layer is 80-150 mm, and steel fibers or synthetic fibers are doped in the thin-layer fiber reinforced concrete surface layer without a reinforcing mesh. Further, a simplified anchoring piece for fixing is arranged in the geocell. A quick construction method of a geocell composite pavement structure comprises the following steps: Firstly, preparing and compacting a roadway bottom plate to form a compacted roadbed; step two, paving a geocell, and fixing by adopting a simplified anti-slip connection structure; step three, filling underground solid waste filling materials into the geocell chambers in a layered manner and compacting to form a reinforced solid waste base layer; Fourthly, paving an isolation layer on the reinforced solid waste base layer; pouring a thin fiber reinforced concrete surface layer on the isolation layer, and curing and forming. Compared with the prior art, the invention has the beneficial effects that: 1. The lifting pressure is remarkably relieved, namely the pavement main material (filling material in the cell chamber) directly adopts underground tunneling waste rock, so that the bidirectional transportation cost of lifti