A method for constructing artificial pillars in underground engineering

An underground engineering and artificial technology, applied in underground mining, underground chambers, ground mining, etc., can solve the problems of difficulty in forming large-scale artificial pillars, low strength of pillars, and inability to realize high pillar space support. The effect of low cost, simple structure of expansion device and reliable support

Active Publication Date: 2020-02-21
NORTHEASTERN UNIV LIAONING
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Problems solved by technology

[0008] In order to solve the problems of difficulty in integral molding of large artificial pillars in the prior art, inability to realize high pillar space support, and low strength of pillars, the present invention provides a method for integral casting and molding of artificial pillar bearing structures and corresponding artificial pillars. Structure and construction method, in order to achieve simple construction technology, low cost, strong stability, high reliability and can be suitable for the construction method of large artificial pillars in underground engineering that actively and effectively support the roof of the stope

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  • A method for constructing artificial pillars in underground engineering
  • A method for constructing artificial pillars in underground engineering

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Embodiment Construction

[0037] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0038] The following will take the underground stope as an example to describe in detail the construction method of the artificial pillar itself and the bearing structure. It can be understood that the artificial pillar of the present invention can not only be used in underground stopes, so the description about underground stopes does not constitute a limitation of the present invention, and those skilled in the art can understand the relevant technical characteristics of underground stopes as other Corresponding features of underground works.

[0039] Such as figure 1 As shown, the underground engineering artificial pillar of the present invention includes an integrally cast bearing structure 6 and self-expanding roofing structures 10 , 11 , 12 . The constr...

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Abstract

The invention relates to the technical field of underground engineering supporting and protection, in particular to an underground engineering artificial supporting column construction method. The underground engineering artificial supporting column construction method includes an integral pouring forming method of a bearing structure of an artificial supporting column. A patio with the desired specification is dug, and is poured into an integrally poured formed reinforced concrete bearing structure; a bottom plate surrounding rock, a bearing structure, a self-expansion device, and a top platesurrounding rock are successively connected through anchoring rods, and the integrality of the artificial supporting column and the surrounding rocks is improved; the bearing capacity and the shear capacity of the artificial supporting column is improved, and the artificial supporting column can effectively and actively support the top plate surrounding rock through a self-expansion top jointingstructure.

Description

technical field [0001] The invention relates to the technical field of artificial support, in particular to the technical field of artificial support for underground engineering. Background technique [0002] At present, the common mining method for mining horizontal and gently inclined medium-thick ore bodies is the room-and-pillar method. In the room-and-pillar mining process, in order to maintain the stability of the stope, it is usually necessary to leave primary ore pillars to support the roof of the stope. The original ore pillars are usually not recycled or are uniformly recycled at the end of mine production. The recovery rate is low and the loss and dilution rate is high, resulting in a large loss of ore, which is not conducive to the protection of mineral resources; and there are generally natural weak surfaces such as bedding, joints, and fissures in the primary ore pillars. Under normal circumstances, the primary ore pillars rapidly produce flakes and other phen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10E21D20/00E21C41/16
CPCE21C41/16E21D11/105E21D11/107E21D20/00
Inventor 李元辉吴大伟安龙冯夏庭戴星航
Owner NORTHEASTERN UNIV LIAONING
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