Construction method for automobile adit and slant chute

Abstract

The invention discloses a construction method for a slant chute, which comprises the following steps: firstly, performing a guniting operation on the inner walls of the slant chute and a tunnel; then, pouring a vertical wall for connecting bottom plates at the bottom part of the slant chute; supporting an arc-shaped template in the slant chute along the central points of the bottom plates; adjusting the included angle between the axis of the arc-shaped template and the bottom plates to be 70+ / -2 degrees; adjusting the deviation between the center of the arc-shaped template and the central points of the bottom plates to be less than or equal to 2mm; then, casting concrete; supporting the arc-shaped template again along the arc-shaped template; and pouring the concrete until the concrete is poured to the upper wellhead of the slant chute after the included angle between the axis of the arc-shaped template and the bottom plates and the deviation between the center of the arc-shaped template and the central points of the bottom plates are adjusted once again. In the construction method for the slant chute, process monitoring and control and the arc-shaped setting template can be fully utilized in the complicated and severe construction environments of mines to achieve the goal of controlling the roundness and the angle of the axis of the slant chute before the concrete is poured, thereby, secondary rework loss is avoided, the quality of the slant chute is ensured, manual work, materials and turnover tools are saved, the construction period is shortened, and the entity quality of the slant chute is good. The construction method for the slant chute has good economic benefits.

Description

technical field [0001] The invention relates to a building engineering construction method, in particular to a construction method for a 70-degree inclined chute in an automobile adit. Background technique [0002] During the construction of the inclined chute in mining transportation, the axis positioning of the chute connecting the unloading chamber and the vehicle adit is often difficult to control. The main characteristics and difficulties of the project include: [0003] 1. Since the mine is located inside the mountain, the construction of the inclined shaft is carried out in a cave. The construction road is narrow and rugged, with a large slope and a large curvature. At the same time, there are safety hazards such as falling rocks during construction. [0004] 2. Due to the narrow construction site, the entrance of the car adit is close to the uphill road, and the turnover tools need to be manually transported into the adit, and the site is limited, which may easily ca...

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Problems solved by technology

[0003] 1. Since the mine is located inside the mountain, the construction of the inclined shaft is carried out in a cave. The construction road is narrow and rugged, with a large slope and a large curvature. At the same time, there are safety hazards such as falling rocks during construction.

[0004] 2. Due to the narrow construction site, the entrance of the car adit is close to the uphill road, and the turnover tools need to be manually transported into the adit, and the site is limited, which may easily cause road blockage

[0005] 3. There is only a reserved hole of 2.170m×1.730m in the center of the bottom plate of the inclined chute. All materials and tools above the bottom plate of the inclined chute must pass through the reserved hole, and vertical transportation is difficult

[0006] 4. The height difference of the inclined chute is large, with an inclination angle of 70° to the ground. The ore unloading chamber is the upper mouth of the chute. After blasting, the shape of the hole and the inner wall is irregular. The inside of the hole is dark and humid, and the construction site is narrow

[0007] Due to the characteristics of the above-mentioned construction project and the difficulty of construction, the shape of the hole and the inner wall after blasting is irregular, the inside of the hole is dark and humid, and the construction site is small. Therefore, the conventional construction method of the inclined chute cannot meet the technical requirements of high-quality and efficient inclined chute.

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