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Roadway floor reinforcement method with functions of horizontal yielding and energy absorption

A technology of roadway and floor, applied in tunnels, tunnel lining, earth drilling and mining, etc., can solve the problems of honeycomb, rain marks, temperature-type and ground-stress-type cracks on the concrete surface, and the floor is easy to bulge or even break, so as to improve the vertical The effect of stress state, weight reduction, and good promotion and application prospects

Inactive Publication Date: 2015-05-13
山东地科勘测设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water spraying on the roof has a continuous corrosion effect on the uncured concrete surface, which can easily cause honeycomb and rain marks on the concrete surface, and the concrete surface is prone to temperature-type and ground stress-type cracks, which all affect its strength.
Moreover, when the concrete is horizontally squeezed by the roadway sides on both sides, the concrete pouring floor is likely to bulge or even break as a whole, and it needs to be repaired and re-cast. The process is complex, costly and requires a large amount of work

Method used

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  • Roadway floor reinforcement method with functions of horizontal yielding and energy absorption
  • Roadway floor reinforcement method with functions of horizontal yielding and energy absorption
  • Roadway floor reinforcement method with functions of horizontal yielding and energy absorption

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment one: if figure 1 , Figure 3 ~ Figure 5 As shown, a roadway floor reinforcement method with the function of horizontally letting pressure and absorbing energy, the method uses blocks for reinforcement, the blocks include a main body 1, the main body 1 is a cube, and the length (width) of the main body of the block is a is 400mm, the height H of the block (rib) is 180mm, and there are two ribs 2 on one side of the vertical side wall of the cube. The distance between the two ribs 2 and the vertical boundary of the block is the same, and the rib spacing is D The block is made of concrete, and the concrete ratio is C30 concrete ratio, that is, cement: sand: gravel: water = 1: 1.87: 3.05: 0.48 (weight ratio); the cross section of the rib 2 is trapezoidal , the width of the upper base of the rib trapezoidal cross-section l 1 is 25mm, the width of the lower bottom of the trapezoidal cross-section of ribs l 2 The rib width d is 35mm, and the rib width d is 50mm; a...

Embodiment 2

[0028] Embodiment two: if Figure 2 ~ Figure 4 , Image 6 As shown, a roadway floor reinforcement method with the function of horizontal pressure absorption and energy absorption, the method adopts blocks for reinforcement, the blocks include a main body 1, the main body 1 is a cube, and the length (width) of the main body of the block is a The height of the block (rib) is 600mm, the height H of the block (rib) is 180mm, there are three ribs 2 on one side of the vertical side wall of the cube, and the distance between the outer rib and the vertical boundary of the block is D 1 Both are 120mm, and the distance between adjacent ribs is D 2 180mm; the block is made of concrete, and the concrete ratio is C30 concrete ratio, that is, cement: sand: gravel: water = 1: 1.87: 3.05: 0.48 (weight ratio); the cross section of the rib 2 is trapezoidal , the width of the upper base of the rib trapezoidal cross-section l 1 is 25mm, the width of the lower bottom of the trapezoidal cross-se...

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Abstract

The invention relates to a roadway floor reinforcement method with functions of horizontal yielding and energy absorption, belongs to the technical field of coal mining and applies to bottom heave of a roadway caused by horizontal pressure from two roadway sides. The function of pressure relief is realized through horizontal deformation of yielding structures (ribbed bars), and the requirements for horizontal yielding and passage of vehicles are met. Compared with the method of laying concrete in the same thickness, the method has the advantages that concrete consumption is greatly reduced and the cost is saved. According to the method, building blocks are used for reinforcement. Each building block comprises a body which is rectangular, and a plurality of ribbed bars are disposed on one minimum-area side of the rectangular body. The method includes the steps of 1, leveling the roadway floor; 2, tiling the building blocks on the roadway floor, allowing the ribbed bars of the building blocks to be perpendicular to the roadway sides and the ribbed bars of the building blocks to be co-directional; cutting the building blocks adjacent to the roadway sides, and mutually pressing and attaching the adjacent building blocks while mutually pressing and attaching the building block bodies and the roadway sides.

Description

technical field [0001] The invention belongs to the technical field of coal mining, and relates to a roadway bottom plate reinforcement method with the function of horizontal yielding pressure and energy absorption, which is suitable for the floor drum caused by the roadway being horizontally squeezed by the sides of the roadway. Background technique [0002] At present, as mine construction tends to be large-scale and modernized, the technology and equipment used underground are also more advanced. In mines with good geological conditions, trackless rubber-tyred vehicles are mostly used for underground auxiliary transportation to complete the work of personnel going up and down the mine, material transportation and equipment handling. The operation of trackless rubber-tyred vehicles requires the road surface to be as smooth and durable as possible. Therefore, the reinforcement treatment of the roadway floor is of great significance to ensure the smooth transportation and pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/04
Inventor 陈蓥张宏伟朱志洁董华东杨文连韩军
Owner 山东地科勘测设计有限公司