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Yielding type annular support and supporting method

A technology of ring support and yielding support, which is applied in the direction of pillars/supports, earth drilling, mining equipment, etc., and can solve problems such as inability to actively and effectively support the roadway, and destructive damage to the support body

Inactive Publication Date: 2018-03-13
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The support of traditional soft rock roadway has gradually developed from a single support form in the past to multiple support and combined support forms, and various support technologies have been formed, such as anchor spraying, anchor spraying, anchor spraying grid , anchor injection, prestressed anchor cable support series technology, steel frame support series technology, reinforced concrete support series technology, grouting reinforcement technology, however, most of the traditional support methods still only rely on the rigid structure of the support body itself The roadway is supported. With the characteristics of large buried depth, large deformation and high ground pressure of the existing soft rock dynamic pressure roadway, once the confining pressure exceeds the rigid bearing capacity of the support body, the support body will be destroyed. Unable to actively and effectively support the roadway

Method used

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  • Yielding type annular support and supporting method
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  • Yielding type annular support and supporting method

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Embodiment 1

[0064] see figure 1 , figure 2 and Figure 5 As shown, the embodiment of the present invention is a pressure-yielding annular support, which can be applied to but not limited to mining, petroleum, subway construction, etc., involving tunnels, roadways and other support projects, especially suitable for large buried depth and fast pressure. , long-term support of the dynamic pressure soft rock roadway with large deformation and high stress, which can ensure the safe use of the roadway; including: a ring body 1, the ring body 1 includes a multi-section arc arch 2, and the arc arch 2 The arc arch feet 3 are connected in sequence from end to end, and there is a pressure relief member 4 connected between the two connected arc arch feet 3, and the pressure relief member 4 and the arc arch foot 3 A connecting piece 5 is arranged on the circumferential periphery of the butt joint, and the connection between the arc arch foot 3 and the pressure release member 4 is strengthened throu...

Embodiment 2

[0078] An embodiment of the present invention provides a support method for a yielding support, comprising the steps of:

[0079] Make pressure-yielding brackets; support the pressure-yielding brackets in roadways or tunnels. For specific structures, refer to Figure 6 As shown; the roadway or tunnel is supported by the pressure relief support; the production of the pressure relief support includes the steps of: making a number of arc arches with steel pipes; at or near the foot of the arc arch, located A rounded table shell structure is arranged on the inner wall of the circular arc arch, and a concrete flow channel extending into the rounded table shell is reserved on the top of the rounded table shell structure; hole; use steel columns to make a number of round tables with the same taper as the outer surface of the inverted round table shell structure, and the concrete flow channel is provided at the center line of the round table; make a ring cavity; The cavity is filled ...

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Abstract

The embodiment of the invention discloses a pressure-yielding annular support and a support method, which relate to the technical field of geotechnical engineering and can effectively prevent the support body from being destroyed or at least reduce the degree of damage to the support body. It includes: a ring body, the ring body includes a plurality of sections of arc arches, the arc arches are connected from end to end through arc arch feet, and the two connected arc arch feet are butted with As for the pressure release member, a connecting piece is provided on the circumferential periphery of the junction between the pressure relief member and the arc arch foot, and the connection between the arc arch bottom foot and the pressure relief member is strengthened through the connection piece. The invention is suitable for support projects involving tunnels, roadways and the like in mining, petroleum, subway construction and the like.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a yielding ring support and a support method. Background technique [0002] With the increasing exploitation of coal resources, the shallow coal resources are gradually depleted. The mining of coal resources has a tendency to develop deeper underground. Shallow rock formations are usually composed of hard rock, but when entering deep underground, the problem of soft rock becomes more and more serious, and the problem of roadway support in soft rock with high dynamic pressure and high stress becomes more and more prominent. [0003] The support of traditional soft rock roadway has gradually developed from a single support form in the past to multiple support and combined support forms, and various support technologies have been formed, such as anchor spraying, anchor spraying, anchor spraying grid , anchor injection, prestressed anchor cable support series techn...

Claims

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Application Information

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IPC IPC(8): E21D15/18
CPCE21D15/18
Inventor 单仁亮戴旭肖宇航杨亚兵
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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