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Mining trackless transportation pavement structure and manufacturing method of fast-laid pressure-bearing floor

A technology for pavement structure and trackless transportation, which is applied to pavements, roads, roads and other directions paved with prefabricated blocks. Longer, reduce production costs, improve the effect of construction efficiency

Inactive Publication Date: 2020-06-05
王克燕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the trackless transportation roads in underground coal mine roadways in China are mainly made of concrete pavement. Due to the influence of mining stress, geological conditions of the roadway floor, and frequent rolling by heavy-duty vehicles, the road surface is easily crushed by roadway drums and vehicles. Damaged due to factors such as damage, long repair period, high labor intensity, and large waste of resources, seriously affecting transportation safety and production efficiency
In order to solve the above problems in some mines, steel plates or steel structure units are used to pave the roadway pavement, but the plastic deformation of the steel plates or steel structure units is serious after long-term heavy pressure from vehicles, and most of the steel plates or steel components can only be used once. Or the volume and weight of the steel structure unit is large, the laying efficiency is low, the labor intensity is high, the anti-skid performance is poor, and a lot of steel is wasted, and it is rarely used at present

Method used

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  • Mining trackless transportation pavement structure and manufacturing method of fast-laid pressure-bearing floor
  • Mining trackless transportation pavement structure and manufacturing method of fast-laid pressure-bearing floor
  • Mining trackless transportation pavement structure and manufacturing method of fast-laid pressure-bearing floor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] like figure 1 , 2 As shown, a mining trackless transport pavement structure is a base layer composed of graded stones 1 with a thickness of 250 mm on the roadway bottom plate, and a layer of 50-60 mm thick plate-shaped reversible The surface layer composed of quick-laid pressure-bearing floors; the reusable quick-laid pressure-bearing floors are hereinafter referred to as pressure-bearing floors 2, and are connected in pairs to form a chain-like overall road surface.

[0062] The above-mentioned base course includes a bottom layer paved with 200mm thick graded stones and a leveling layer paved with 50mm thick 8-12mm small stones; the graded stones are graded according to the railway TB / T2410-1990 "Railway Gravel Ballast" standard Grading of ballast;

[0063] The above-mentioned pressure floor 2 such as image 3 , 4 As shown, it is in the shape of a rectangular plate with a thickness of 50-60mm cast by MC nylon material; the surface of the pressure-bearing floor 2 is...

Embodiment 2

[0072] The following is an example of a mine running a WC40E support truck to illustrate the design principle of the size of the MC pressure-bearing floor in Example 1:

[0073] 1. Design principle of thickness dimension: According to the ground specific pressure of the tire at the maximum full load of WC40E type support truck is 0.43MPa, to calculate the compressive, shearing, bending and other strengths of the pressure-bearing floor 2, and then consider the unilateral force and elastic deformation etc., the total thickness of the designed pressure floor 2 shall not be less than 60mm.

[0074] 2. Length (i.e. roadway width direction) size design principle: the maximum wheelbase width of commonly used underground rubber-tyred vehicles is 2950mm (the maximum width outside the two wheels of the WC40YB bracket), the minimum wheelbase width is 2000mm (W9C3J light vehicles), and the minimum wheel width 350mm, and the convenience of vehicle driving, laying and recycling, etc., the l...

Embodiment 3

[0078] The casting material MC nylon of pressure-bearing floor 2 disclosed in embodiment 1 is to be that raw material and auxiliary agent polymerize with caprolactam, and the formula of raw material and various auxiliary agents is as follows:

[0079] Formula table of raw materials and various additives

[0080]

[0081] The optimal ratio is as follows:

[0082] Optimum formula table of raw materials and various additives

[0083]

[0084] The tested performance indicators of the MC nylon casting material obtained by using the above optimal formula are as follows:

[0085] The main test data table obtained by the optimal formula

[0086]

[0087]

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Abstract

The invention discloses a mining trackless transportation pavement structure which is characterized in that a base layer composed of graded stones is laid on a roadway bottom plate, and a surface layer composed of a pressure-bearing floor is laid at the wheel pressing line position of the base layer; the casting material of the pressure-bearing floor is MC nylon, and uninterrupted continuous casting production is carried out by adopting a static casting molding process; compared with a concrete pavement, due to the fact that the base layer composed of the graded stones is laid on the roadway bottom plate, the heavy load of the rubber-tyred vehicle can be evenly dispersed on the roadway bottom plate, safe operation of the rubber-tyred vehicle is guaranteed, after the service life of the roadway is finished and abandoned, the stones and the pressure-bearing floor can be recycled for the next roadway to be repeatedly used, and material cost and ground transportation cost are saved.

Description

technical field [0001] The invention relates to the construction technology of a trackless transport roadway under a coal mine. Background technique [0002] With the increasing scale of coal mining at home and abroad, the improvement of the degree of mechanization, and the acceleration of mining speed, many large and extra-large mines have generally adopted the trackless transportation system of rubber tires. However, at present, the trackless transportation roads in underground coal mine roadways in China are mainly made of concrete pavement. Due to the influence of mining stress, geological conditions of the roadway floor, and frequent rolling by heavy-duty vehicles, the road surface is easily crushed by roadway drums and vehicles. The repair period is long, the labor intensity is high, and the waste of resources is large, which seriously affects the transportation safety and production efficiency. In order to solve the above problems, some mines have adopted steel plate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C5/00E01C5/20C08G69/14C08G69/16C08K3/04C08K5/5399B29C39/00B29C39/02B29C39/44
CPCB29C39/003B29C39/021B29C39/44C08G69/14C08G69/16C08K3/04C08K5/5399E01C5/00E01C5/20
Inventor 王克燕邢天海靳惠深曹磊石礼民王天珵王刚翟强
Owner 王克燕