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High-strength and large-shrinkage enclosed arc-plate support structure

A high-strength, closed-type technology, applied in shaft lining, tunnel lining, underground chamber, etc., can solve the problem that the segment support structure cannot be directly applied, achieve fast construction speed, solve large surrounding rock pressure, and be reliable The effect of structural stability

Inactive Publication Date: 2017-06-06
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the segment support structure cannot be directly applied to the support of deep well soft rock roadway

Method used

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  • High-strength and large-shrinkage enclosed arc-plate support structure
  • High-strength and large-shrinkage enclosed arc-plate support structure
  • High-strength and large-shrinkage enclosed arc-plate support structure

Examples

Experimental program
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Effect test

specific Embodiment approach

[0028] The preferred embodiment of the high-strength and large-shrinkage enclosed arc-plate support structure of the present invention is:

[0029] It consists of a circular structure surrounded by 4 to 8 reinforced concrete arc plates. There are pressure blocks between adjacent reinforced concrete arc plates, and corresponding pin holes are provided between the ends of adjacent reinforced concrete arc plates. and connecting steel pins, the connecting steel pins are inserted into the pin holes to connect two adjacent arc plates in series, the reinforced concrete arc plates are provided with pressure relief windows, and the pressure relief windows are set on the steel bars One or both sides of a concrete arc.

[0030] The reinforced concrete arc plate includes a bottom arc plate, a top arc plate, 2 left arc plates, and 2 right arc plates. After the pressure blocks are compressed by 50%, the circle formed by the reinforced concrete arc The structure is a standard circular struc...

specific Embodiment

[0048] Key structures include: prefabricated reinforced concrete arc slabs, yielding structures between reinforced concrete arc slabs (for example: compressible thick wood blocks, etc.), effective connections between reinforced concrete arc slabs (for example: using steel pin structures), etc. . The following are detailed descriptions respectively:

[0049] 1. Detailed structure of supporting structure

[0050] 1) The overall structure of the supporting structure

[0051] The support structure is generally composed of 6 arc plates, and pressure blocks are installed between adjacent arc plates. In order to ensure the overall stability of the support structure, the arc plates are connected together by "connecting steel pins". ,like Figure 1a , Figure 1b and figure 2 shown.

[0052] The large-shrinkage arc-plate support structure generally has a circular cross-section, the inner diameter of the roadway is generally 5m to 7m, the wall thickness of the arc plate is generally ...

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Abstract

The invention discloses a high-intensity large-shrinkage sealed cambered-plate support structural element. The structural element comprises a circular structure defined by four to eight reinforcement concrete cambered plates. A yielding wood block is arranged between the adjacent reinforcement concrete cambered plates. Corresponding pin holes and connection steel pins are formed at the end of the adjacent reinforcement concrete cambered plates. The connection steel pins are inserted in the pin holes to connect the two adjacent sections of cambered plates in series, and pressure relief windows are formed in bottom cambered plates. The structural element has the advantages of being large in shrinkage, reliable in structural stability, fast in construction speed and capable of solving the technical problems of large deep-well soft-rock roadway surrounding rock pressure, large deformation and poor stability effectively.

Description

technical field [0001] The invention relates to a deep well soft rock roadway support structure, in particular to a high-strength and large-shrinkage enclosed arc-plate support structure. Background technique [0002] In the deep well soft rock roadway support, the main support technologies now include anchor net spray support series technology, section steel support series technology, reinforced concrete structure support series technology, steel pipe concrete support support technology, etc. Whether the supporting structure of deep well roadway, soft rock roadway and dynamic pressure roadway can withstand the surrounding rock pressure and dynamic pressure depends on the size of the supporting structure's bearing capacity and whether the supporting structure has a large shrinkage capacity. quantity. In addition, it is also required that the roadway support cost is lower and the support construction speed is faster. [0003] In the prior art, the support structures of soft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/08
CPCE21D11/08E21D11/083
Inventor 高延法谢浩徐鹏飞
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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