CN110939474A - Prefabricated pillar of bellows mortise and tenon structure skeleton for underground coal mine - Google Patents
Prefabricated pillar of bellows mortise and tenon structure skeleton for underground coal mine Download PDFInfo
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- CN110939474A CN110939474A CN201910956186.0A CN201910956186A CN110939474A CN 110939474 A CN110939474 A CN 110939474A CN 201910956186 A CN201910956186 A CN 201910956186A CN 110939474 A CN110939474 A CN 110939474A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/02—Non-telescopic props
- E21D15/06—Non-telescopic props with parts joined by a lock, with or without slight axial adjustability
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Abstract
A corrugated pipe mortise and tenon structure framework prefabricated pillar for underground coal mine comprises a top pillar and a bottom pillar; the top pillar and the bottom pillar are prefabricated on the ground, when the top pillar slurry and the bottom pillar slurry are transported to the underground from the ground, and a group of the top pillar and the bottom pillar passes through the top pillar tenon frame and the bottom pillar hole frame to form a complete pillar at a preset supporting position of an underground gob-side entry retaining. The invention can play a role after being installed, provides support with enough strength, can reduce underground temporary support, can be repeatedly used, and is convenient to install and disassemble.
Description
Technical Field
The invention relates to a prefabricated pillar of a corrugated pipe mortise and tenon structure framework for underground coal mines.
Background
In the gob-side entry retaining of the underground coal mine, a stack type support is generally adopted for supporting, but the support strength of the stack type support is weaker, the deformation of the roadway is large, and the gob-side entry retaining effect is often unsatisfactory; and because the roadway is deformed greatly, the stack type support can only be disposable and cannot be reused. Moreover, the stack type support usually uses wood, and the forest resource consumption is large.
Disclosure of Invention
In order to solve the problems, the invention provides a corrugated pipe mortise and tenon structure framework prefabricated support for a coal mine underground.
A corrugated pipe mortise and tenon structure framework prefabricated pillar for underground coal mine comprises a top pillar and a bottom pillar; the top pillar comprises a top pillar longitudinal framework, a top pillar transverse hoop frame, a top pillar tenon frame, a top pillar corrugated pipe and top pillar slurry, and the bottom pillar comprises a bottom pillar longitudinal framework, a bottom pillar transverse hoop frame, a bottom pillar hole frame, a bottom pillar corrugated pipe and bottom pillar slurry; the top pillar longitudinal framework, the top pillar transverse hoop frame and the top pillar tenon frame form a top pillar hoop, the top pillar corrugated pipe is sleeved on the periphery of the top pillar hoop, and the top pillar slurry is filled in the top pillar corrugated pipe; the bottom pillar longitudinal framework, the bottom pillar transverse hoop frame and the bottom pillar tenon frame form a bottom pillar reinforcement hoop, the bottom pillar corrugated pipe is sleeved on the periphery of the bottom pillar reinforcement hoop, and the bottom pillar slurry is filled in the top pillar corrugated pipe; the top pillar and the bottom pillar are prefabricated on the ground, when the top pillar slurry and the bottom pillar slurry are transported to the underground from the ground, and a group of the top pillar and the bottom pillar passes through the top pillar tenon frame and the bottom pillar hole frame to form a complete pillar at a preset supporting position of an underground gob-side entry retaining.
The corrugated pipe mortise and tenon structure framework prefabricated support column for the underground coal mine further comprises a middle support column, wherein the middle support column comprises a middle support column longitudinal framework, a middle support column transverse hoop frame, a middle support column tenon frame, a middle support column hole frame, a middle support column corrugated pipe and middle support column slurry; the middle pillar longitudinal framework, the middle pillar transverse hoop frame, the middle pillar tenon frame and the middle pillar hole frame form a middle pillar reinforcement hoop, the middle pillar corrugated pipe is sleeved on the periphery of the middle pillar reinforcement hoop, and the middle pillar slurry is filled in the middle pillar corrugated pipe; when the support is used, the top pillar and the bottom pillar are combined in a group through the mortise and tenon of the top pillar tenon frame and the mortise and tenon of the middle pillar hole frame at a preset support position of an underground gob-side entry retaining, and the mortise and tenon of the middle pillar tenon frame and the mortise and tenon of the bottom pillar hole frame are combined to form a complete pillar.
In the prefabricated strut of the corrugated pipe mortise and tenon structure framework for the underground coal mine, the number of the middle struts is more than 2.
In the prefabricated support column of the corrugated pipe mortise and tenon structure framework for the underground coal mine, the top support column and the bottom support column can be detached and reassembled.
In the prefabricated strut of the corrugated pipe mortise and tenon structure framework for the underground coal mine, the middle strut, the top strut and the bottom strut can be detached and reassembled.
In the prefabricated support column of the corrugated pipe mortise and tenon structure framework for the underground coal mine, a top support column longitudinal framework and a top support column transverse hoop frame both adopt reinforcing steel bars with the diameter of 700mm, wherein the top support column longitudinal framework adopts phi 12mm thread reinforcing steel bars, the yield strength is 400MPa, the top support column transverse hoop frame adopts phi 8mm thread reinforcing steel bars, and the yield strength is 335 MPa; the bottom pillar longitudinal framework and the bottom pillar transverse hoop frame both adopt steel bars with the diameter of 700mm, wherein the bottom pillar longitudinal framework adopts phi 12mm thread steel bars, the yield strength is 400MPa, the bottom pillar transverse hoop frame adopts phi 8mm thread steel bars, and the yield strength is 335 MPa.
In the prefabricated support column of the corrugated pipe mortise and tenon structure framework for the underground coal mine, the longitudinal framework of the middle support column and the transverse hoop frame of the middle support column both adopt reinforcing steel bars with the diameter of 700mm, wherein the longitudinal framework of the top support column adopts phi 12mm thread reinforcing steel bars, the yield strength is 400MPa, the transverse hoop frame of the top support column adopts phi 8mm thread reinforcing steel bars, and the yield strength is 335 MPa.
In the prefabricated support of the corrugated pipe mortise and tenon structure framework for the underground coal mine, the top support tenon frame is in a circular truncated cone shape, and the ratio of the height of the circular truncated cone to the height of the longitudinal framework of the top support is 1: 8-1: 12; the hole frame of the bottom pillar is in a circular truncated cone shape, the ratio of the height of the circular truncated cone to the height of the longitudinal framework of the bottom pillar is 1: 8-1: 12, and the included angle between each circular truncated cone generatrix and the upper bottom surface and the lower bottom surface is 45 degrees.
In the corrugated pipe mortise and tenon structure framework prefabricated support column for the underground coal mine, the middle support column tenon frame and the middle support column hole frame are both in a circular truncated cone shape, the ratio of the height of the circular truncated cone to the height of the longitudinal framework of the middle support column is 1: 8-1: 12, and the included angle between each circular truncated cone bus and the upper bottom surface and the lower bottom surface is 45 degrees.
In the prefabricated support column of the corrugated pipe mortise and tenon structure framework for the underground coal mine, the top support column tenon frame is in gapless fit with the middle support column hole frame after being filled with slurry, and the middle support column tenon frame is in gapless fit with the bottom support column hole frame after being filled with slurry.
Compared with the prior art, the invention has the following technical advantages:
(1) the invention is prefabricated on the ground, and when the underground supporting device is used underground, the underground supporting device is transported from the ground to the underground, and can play a role after being installed, thereby reducing underground temporary support.
(2) The invention forms a top pillar, a bottom pillar and a middle pillar in sections, thereby being convenient for underground transportation and disassembly.
(3) The top strut, the bottom strut and the middle strut form a mortise and tenon structure, so that sufficient shear and compression strength is provided, hole-aligning installation is facilitated, and the integrity of the strut is kept.
(4) The top pillar, the bottom pillar and the middle pillar provide support with enough strength, the roadway deformation is small, and the pillars can be detached and recycled for reuse when the gob-side entry retaining is destroyed.
Drawings
In order that the summary of the invention may be more readily understood, the invention will now be further described with reference to the accompanying drawings and examples.
FIG. 1 is a schematic structural view (unfilled with slurry) of a prefabricated pillar top support of a corrugated pipe mortise and tenon framework for underground coal mine;
FIG. 2 is a schematic structural view (filled with slurry) of a prefabricated pillar top pillar with a corrugated pipe mortise and tenon framework for underground coal mine;
FIG. 3 is a schematic structural view (without slurry filling) of a middle pillar of a prefabricated pillar of a corrugated pipe mortise and tenon framework for underground coal mine;
FIG. 4 is a schematic structural view (filled with slurry) of a middle pillar of a prefabricated pillar of a corrugated pipe mortise and tenon framework for underground coal mine;
FIG. 5 is a schematic structural view (unfilled with slurry) of a prefabricated pillar bottom pillar with a corrugated pipe mortise and tenon framework for underground coal mine;
FIG. 6 is a schematic structural view (filled with slurry) of a prefabricated pillar bottom pillar with a corrugated pipe mortise and tenon framework for underground coal mine;
fig. 7 is a schematic structural diagram (filled with slurry) of the prefabricated top pillar and bottom pillar mortise and tenon combination of the corrugated pipe mortise and tenon structural framework for underground coal mine.
Labeled as: 1-top strut, 2-middle strut, 3-bottom strut, 101-top strut longitudinal skeleton, 102-top strut transverse hoop skeleton, 103-top strut tenon skeleton, 104-top strut bellows, 105-top strut slurry, 201-middle strut longitudinal skeleton, 202-middle strut transverse hoop skeleton, 203-middle strut tenon skeleton, 204-middle strut hole skeleton, 205-middle strut bellows, 206-middle strut slurry, 301-bottom strut longitudinal skeleton, 302-bottom strut transverse hoop skeleton, 303-bottom strut hole skeleton, 304-bottom strut bellows, 305-bottom strut slurry.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 to 7 show preferred embodiments of the prefabricated support pillar with the corrugated pipe mortise and tenon framework for underground coal mines.
Example one
The corrugated pipe mortise and tenon structure framework prefabricated support column for the underground coal mine comprises a top support column 1 and a bottom support column 3; the top strut 1 comprises a top strut longitudinal skeleton 101, a top strut transverse hoop frame 102, a top strut tenon frame 103, a top strut corrugated pipe 104 and top strut slurry 105, and the bottom strut 3 comprises a bottom strut longitudinal skeleton 301, a bottom strut transverse hoop frame 302, a bottom strut hole frame 303, a bottom strut corrugated pipe 304 and bottom strut slurry 305; the top pillar longitudinal framework 101, the top pillar transverse hoop frame 102 and the top pillar tenon frame 103 form a top pillar reinforcement hoop, the top pillar corrugated pipe 104 is sleeved on the periphery of the top pillar reinforcement hoop, and the top pillar slurry 105 is filled in the top pillar corrugated pipe 104; the bottom pillar longitudinal skeleton 301, the bottom pillar transversal hoop 302 and the bottom pillar tenon 303 form a bottom pillar reinforcement hoop, the bottom pillar corrugated pipe 304 is sleeved on the periphery of the bottom pillar reinforcement hoop, and the bottom pillar slurry 305 is filled in the top pillar corrugated pipe 304; the top prop 1 and the bottom prop 3 are both prefabricated on the ground, and when in use, the top prop slurry 105 and the bottom prop slurry 305 are transported from the ground to the underground, and a group of the top prop 1 and the bottom prop 3 is formed into a complete prop through the top prop tenon frame 103 and the bottom prop hole frame 303 at a preset supporting position along a roadway in the underground.
In this embodiment, the top prop 1 and the bottom prop 3 are both detachable and reassembled.
In this embodiment, the top pillar longitudinal frame 101 and the top pillar transverse hoop frame 102 both use steel bars with a diameter of 700mm, wherein the top pillar longitudinal frame 101 uses phi 12mm thread steel bars, the yield strength is 400MPa, the top pillar transverse hoop frame 102 uses phi 8mm thread steel bars, and the yield strength is 335 MPa; the bottom pillar longitudinal framework 301 and the bottom pillar transverse hoop frame 302 both adopt steel bars with the diameter of 700mm, wherein the bottom pillar longitudinal framework 301 adopts phi 12mm thread steel bars, the yield strength is 400MPa, the bottom pillar transverse hoop frame 302 adopts phi 8mm thread steel bars, and the yield strength is 335 MPa.
Example two
The corrugated pipe mortise and tenon structure framework prefabricated pillar for the underground coal mine comprises a middle pillar 2 besides a top pillar 1 and a bottom pillar 3 in the first embodiment, wherein the middle pillar 2 comprises a middle pillar longitudinal framework 201, a middle pillar transverse hoop frame 202, a middle pillar tenon frame 203, a middle pillar hole frame 204, a middle pillar corrugated pipe 205 and middle pillar slurry 206; the middle pillar longitudinal skeleton 201, the middle pillar transverse hoop frame 202, the middle pillar tenon frame 203 and the middle pillar hole frame 204 form a middle pillar reinforcement hoop, the middle pillar corrugated pipe 105 is sleeved on the periphery of the middle pillar reinforcement hoop, and the middle pillar slurry 106 is filled in the middle pillar corrugated pipe 105; in use, at a preset support position of a down-hole gob-side entry retaining, a group of the top pillar 1 and the bottom pillar 3 is in mortise and tenon connection with the top pillar tenon frame 103 and the middle pillar hole frame 204, and the middle pillar tenon frame 205 and the bottom pillar hole frame 303 are in mortise and tenon connection to form a complete pillar.
In the present embodiment, the number of the intermediate pillars 2 is 1.
In this embodiment, the middle support 2 and the top and bottom supports 1 and 3 are detachable and reassembled.
In this embodiment, the middle pillar longitudinal frame 201 and the middle pillar transversal hoop frame 202 both use steel bars with a diameter of 700mm, wherein the top pillar longitudinal frame 201 uses phi 12mm twisted steel bars, the yield strength is 400MPa, and the top pillar transversal hoop frame 202 uses phi 8mm twisted steel bars, the yield strength is 335 MPa.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (7)
1. The utility model provides a prefabricated pillar of bellows mortise and tenon structure skeleton that colliery was used under and which characterized in that: comprises a top pillar (1) and a bottom pillar (3);
the top strut (1) comprises a top strut longitudinal framework (101), a top strut transverse hoop frame (102), a top strut tenon frame (103), a top strut corrugated pipe (104) and top strut slurry (105), and the bottom strut (3) comprises a bottom strut longitudinal framework (301), a bottom strut transverse hoop frame (302), a bottom strut hole frame (303), a bottom strut corrugated pipe (304) and bottom strut slurry (305);
the top pillar longitudinal framework (101), the top pillar transverse hoop frame (102) and the top pillar tenon frame (103) form a top pillar reinforcement hoop, the top pillar corrugated pipe (104) is sleeved on the periphery of the top pillar reinforcement hoop, and the top pillar slurry (105) is filled in the top pillar corrugated pipe (104);
the bottom pillar longitudinal framework (301), the bottom pillar transverse hoop frame (302) and the bottom pillar tenon frame (303) form a bottom pillar reinforcement hoop, the bottom pillar corrugated pipe (304) is sleeved on the periphery of the bottom pillar reinforcement hoop, and the bottom pillar slurry (305) is filled in the top pillar corrugated pipe (304);
the top prop (1) and the bottom prop (3) are both prefabricated on the ground, and when in use, the top prop slurry (105) and the bottom prop slurry (305) are transported from the ground to the underground, and a group of the top prop (1) and the bottom prop (3) is formed into a complete prop through the top prop tenon frame (103) and the bottom prop hole frame (303) at a preset supporting position of underground gob-side entry retaining.
2. The underground coal mine prefabricated pillar with the corrugated pipe mortise and tenon structure framework as claimed in claim 1, which is characterized in that: the support structure is characterized by further comprising a middle strut (2), wherein the middle strut (2) comprises a middle strut longitudinal framework (201), a middle strut transverse hoop frame (202), a middle strut tenon frame (203), a middle strut hole frame (204), a middle strut corrugated pipe (205) and middle strut slurry (206);
the middle pillar longitudinal skeleton (201), the middle pillar transverse hoop frame (202), the middle pillar tenon frame (203) and the middle pillar hole frame (204) form a middle pillar reinforcement hoop, the middle pillar corrugated pipe (105) is sleeved on the periphery of the middle pillar reinforcement hoop, and the middle pillar slurry (106) is filled in the middle pillar corrugated pipe (105);
in use, the top pillar (1) and the bottom pillar (3) are combined in a mortise and tenon mode through the top pillar tenon frame (103) and the middle pillar hole frame (204) in a group at a preset supporting position of a down-hole gob-side entry retaining, and the middle pillar tenon frame (205) and the bottom pillar hole frame (303) are combined in a mortise and tenon mode to form a complete pillar.
3. The underground coal mine prefabricated pillar with the corrugated pipe mortise and tenon structure framework as claimed in claim 2, wherein the corrugated pipe mortise and tenon structure framework comprises: the number of the middle pillars (2) is more than 2.
4. The underground coal mine corrugated pipe mortise and tenon structure skeleton prefabricated support column according to any one of claims 1 to 3, which is characterized in that: the top pillar (1) and the bottom pillar (3) can be disassembled and reassembled.
5. The underground corrugated pipe mortise and tenon structure skeleton prefabricated pillar for a coal mine according to claim 2 or 3, which is characterized in that: the middle support column (2) and the top support column (1) and the bottom support column (3) can be disassembled and reassembled.
6. The prefabricated pillar of a corrugated pipe mortise and tenon structure framework for underground coal mines as claimed in claims 1 to 3, wherein: reinforcing steel bars with the diameter of 700mm are adopted in the top pillar longitudinal framework (101) and the top pillar transverse hoop frame (102), wherein phi 12mm threaded reinforcing steel bars are adopted in the top pillar longitudinal framework (101), the yield strength is 400MPa, phi 8mm threaded reinforcing steel bars are adopted in the top pillar transverse hoop frame (102), and the yield strength is 335 MPa;
the bottom pillar longitudinal framework (301) and the bottom pillar transverse hoop frame (302) both adopt steel bars with the diameter of 700mm, wherein the bottom pillar longitudinal framework (301) adopts phi 12mm threaded steel bars, the yield strength is 400MPa, the bottom pillar transverse hoop frame (302) adopts phi 8mm threaded steel bars, and the yield strength is 335 MPa.
7. The underground corrugated pipe mortise and tenon structure skeleton prefabricated pillar for a coal mine according to claim 2 or 3, which is characterized in that: the middle pillar longitudinal framework (201) and the middle pillar transverse hoop frame (202) both adopt steel bars with the diameter of 700mm, wherein the top pillar longitudinal framework (201) adopts phi 12mm thread steel bars, the yield strength is 400MPa, the top pillar transverse hoop frame (202) adopts phi 8mm thread steel bars, and the yield strength is 335 MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910956186.0A CN110939474A (en) | 2019-10-09 | 2019-10-09 | Prefabricated pillar of bellows mortise and tenon structure skeleton for underground coal mine |
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| CN201910956186.0A CN110939474A (en) | 2019-10-09 | 2019-10-09 | Prefabricated pillar of bellows mortise and tenon structure skeleton for underground coal mine |
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Cited By (1)
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| CN112627864A (en) * | 2020-12-16 | 2021-04-09 | 中煤科工开采研究院有限公司 | Support device for underground coal mine |
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Application publication date: 20200331 |