Prefabricated pier column reinforced roadway support method

A technology for roadway support and prefabricated piers, which is used in pillars/supports, earthwork drilling, mining equipment, etc., can solve the problems of high construction cost, many procedures, and long concrete hardening period, and achieves reduced equipment investment, simple process, Good top effect

Pending Publication Date: 2021-11-12
中煤能源研究院有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problems in the prior art of adding and lowering pre-cast concrete piers for support, there are many procedures, high construction costs and long concrete hardening period, the present invention provides a method for st

Method used

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  • Prefabricated pier column reinforced roadway support method
  • Prefabricated pier column reinforced roadway support method
  • Prefabricated pier column reinforced roadway support method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0052] The fully mechanized mining face is inclined to the goblin, the height of the roadway is 2.0m, and the width is 5.4m. 3m.

[0053] according to figure 1 , figure 2 and image 3 Shown, the prefabricated pier column provided by the present invention strengthens roadway support method as follows:

[0054]Step 1, prefabricated reinforced concrete on the ground to form prefabricated pier column 1 and top pocket 3, pier column label C30, diameter 0.6m, pier body pre-embedded lifting ring 2, prefabricated pier column 1 height 1.85m, bottom diameter 1m, top connection The bag 3 is a cylindrical structure, one end is closed, the other end is open, the side is provided with a grouting port 4, the diameter of the top bag is 0.7m, and the height is 0.6m;

[0055] Step 2, using a trackless rubber-tyred vehicle to transport the prefabricated pier column 1 from the ground to the underground, and the transport destination is the trough near the gob in the fully mechanized mining f...

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Abstract

The invention provides a prefabricated pier column reinforced roadway support method. The prefabricated pier column reinforced roadway support method comprises the steps that an underground cast-in-place pier column is replaced by a prefabricated pier column, and the construction technology is greatly optimized; concrete construction equipment is reduced, equipment investment is greatly reduced, the top of the prefabricated pier column is sleeved with a roof contact bag, effective roof contact can be guaranteed under the action of grouting pressure, the supporting effect on an underground top plate is improved after filling materials in the roof contact bag are hardened. According to the prefabricated pier column reinforced roadway support method, underground construction workers are reduced, and the pier column construction speed is increased. On the other hand, according to the prefabricated pier column reinforced roadway support method, the technology is simple, the investment is low, the cost is low, manpower is reduced and efficiency is improved, the mechanization degree is high, and the roof contact effect is good.

Description

technical field [0001] The invention relates to the technical field of coal mine roadway support, in particular to a method for reinforcing roadway support with prefabricated pier columns. Background technique [0002] Coal mine roadways are generally supported by anchor nets and cables. When the surrounding rock pressure is high, single-body reinforced support is used. However, under some engineering geological conditions, due to high surrounding rock pressure, single-body reinforced support still cannot meet the requirements. Going over the gob alley, retaining gobside alley side support, etc. At present, underground cast-in-place concrete piers are generally used to strengthen support when the fully mechanized mining face passes through the gob. Concrete equipment requires a large number of operators, many processes, and a long concrete hardening cycle, which cannot provide timely reinforcement support. In order to reduce the operation process of pier column strengtheni...

Claims

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Application Information

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IPC IPC(8): E21D15/00E21D15/02E21D15/50E21D15/55
CPCE21D15/005E21D15/02E21D15/50E21D15/55
Inventor 吴玉意刘清宝朱磊徐凯黄剑斌赵萌烨秋丰岐刘治成刘文涛程海星
Owner 中煤能源研究院有限责任公司
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