CN211737164U - Support column for gob-side entry retaining gangue retaining support - Google Patents
Support column for gob-side entry retaining gangue retaining support Download PDFInfo
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- CN211737164U CN211737164U CN202020308289.4U CN202020308289U CN211737164U CN 211737164 U CN211737164 U CN 211737164U CN 202020308289 U CN202020308289 U CN 202020308289U CN 211737164 U CN211737164 U CN 211737164U
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Abstract
The utility model discloses a pillar for gob entry retaining waste rock is strutted, including propping up the silicomanganese steel pipe of establishing in gob entry rubble group side, with the cap of the welding on silicomanganese steel pipe upper portion of looks adaptation with it, with the column shoe of the welding of looks adaptation in silicomanganese steel pipe lower part, silicomanganese steel pipe middle part welding circular chuck, be convenient for install the manometer, to goaf rubble group side go on sideway pressure monitoring, form a whole pillar of strutting. The utility model provides a pillar for gob entry keeps off waste rock and struts simple structure, the assembly of being convenient for has improved the intensity that gob entry kept off the waste rock and struts, compares with the U shaped steel pillar among the prior art, still is showing and is improving bending strength, can improve the stability of gob entry side lane group, reduces the tunnel group drum to the tunnel secondary maintenance volume of reduction has practiced thrift labour and construction cost.
Description
Technical Field
The utility model relates to a retained roadway waste rock retaining support technology, concretely relates to a pillar for gob entry waste rock retaining support is applicable to the colliery and does not have under the coal pillar exploitation roof cutting release gob entry condition tunnel waste rock retaining support.
Background
The gob-side entry retaining technology for coal pillar-free mining roof cutting pressure relief can recover working face crossheading coal pillars, reduce underground roadway excavation and improve the resource recovery rate, but in the gob-side entry retaining process, the retained roadway often has severe mine pressure appearance and serious roadway deformation, particularly on one side of a broken stone side of the retained roadway, the side bulging is serious, and a strut used for retaining a gangue support is easy to lose efficacy. At present, most of pillars used for mine gob-side entry retaining gangue retaining support are mainly single hydraulic pillars, mining I-steel, U-shaped steel and the like. The single hydraulic prop has high cost and low bending strength, is easy to bend at the middle part when used for waste rock blocking support, is not easy to maintain after bending, has low bending strength of mining I-steel and U-shaped steel props, is easy to bend and distort after being pressed, and loses efficacy of waste rock blocking support after deformation.
In conclusion, the gob-side entry retaining technology for roof cutting and pressure relief in coal pillar-free mining is comprehensively popularized and applied, and the entry retaining and gangue stopping support technology is of great importance. However, the existing waste rock blocking single hydraulic prop is expensive, the U-shaped steel is low in strength and easy to bend and damage, and the waste rock blocking support is high in cost, slow in construction, easy to lose effectiveness and capable of being repeatedly constructed, so that the prior art has certain defects.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pillar for gob entry keeps off waste rock and struts to solve the problem that prior art exists, the utility model discloses simple structure, preparation construction convenience, economic cost low, construction effect are good.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a pillar for gob entry side gangway keeps off waste rock and struts, has the cap including propping up the silicomanganese steel pipe of establishing in gob entry rubble group side, and the top welding of silicomanganese steel pipe has the cap, and the bottom welding has the column shoe, and the middle part welding has the chuck that is used for installing the manometer, the manometer is used for monitoring rubble group and keeps entry side lateral pressure, cap and column shoe are the rectangle steel sheet, during the use, cap and column shoe direct action are kept entry side gangway group and play and keep off the waste rock effect.
Further, the length of the silicon-manganese steel pipe is 250-280 cm.
Further, the silicomanganese steel pipe is hollow cylinder, and the external diameter is 100 ~ 120mm, and the wall thickness is 8 ~ 10 mm.
Furthermore, the column shoe is a Q235 rectangular steel plate, the width multiplied by the length is 300 multiplied by 400mm, and the thickness is 8-10 mm.
Furthermore, the cap is a Q235 rectangular steel plate, the width multiplied by the length is 200 multiplied by 300mm, and the thickness is 8-10 mm.
Furthermore, the chuck is a disc with the diameter of 15cm and is welded in the middle of the silicon-manganese steel pipe.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model provides a pillar for gob entry keeps off waste rock and struts simple structure, the assembly of being convenient for has improved the intensity that gob entry kept off the waste rock and struts, compares with the U shaped steel pillar among the prior art, still is showing and is improving bending strength, can improve the stability of gob entry side lane group, reduces the tunnel group drum to the tunnel secondary maintenance volume of reduction has practiced thrift labour and construction cost.
Particularly, the utility model has simple structure, convenient manufacture, easy acquisition of silicon-manganese steel pipe and steel plate and low cost; the strength is high, can bear great mine pressure, and welding process can be accomplished on the colliery well, does not receive construction environment restriction such as narrow and small space in the pit in the colliery, and the direct transportation is used in the pit after the welding is accomplished, and the height can be adjusted according to on-the-spot tunnel height to keep off the waste rock and strut, and cap, column shoe can adjust according to tunnel roof, bottom plate lithology, because this keep off the waste rock pillar intensity high, not fragile, can carry out secondary recycle, practice thrift the underground supporting cost.
Drawings
Fig. 1 is a schematic view of the pillar for gob-side entry retaining gangue retaining support of the utility model.
Fig. 2 is a side view of the pillar structure for gob-side entry retaining gangue retaining support of the utility model.
Fig. 3 is a top view of the pillar structure for gob-side entry retaining gangue retaining support of the utility model.
Wherein, 1-column cap; 2-silicomanganese steel pipe; 3-a column shoe; 4-chuck.
Detailed Description
The invention is further described with reference to the accompanying drawings:
a prop for gob-side entry retaining gangue support, comprising:
a. the silicomanganese steel pipe 2 is a rigid hollow pipe, is high in hardness and bending strength and is not easy to bend, and plays a role in supporting through upper and lower cap column shoes and directly acts on a roadway side to play a role in retaining waste rock; the length of the silicon-manganese steel pipe is 250-280 cm, the length of the silicon-manganese steel pipe can be adjusted according to the roadway retaining height under the actual engineering geological conditions, the outer diameter of the silicon-manganese steel pipe is 100-120 mm, the wall thickness of the silicon-manganese steel pipe is 8-10 mm, and the outer diameter and the wall thickness of the silicon-manganese steel pipe can be adjusted according to the mine pressure visualization intensity of a gob-side roadway retaining.
b. The column cap 1 is formed by welding a rectangular steel plate at the top end of a silicon-manganese steel pipe by using an electric welding process, the steel plate is rectangular and rigid, the steel plate is a Q235 common plate, the column cap is a Q235 rectangular steel plate, the width and the length of the column cap are 200 mm by 300mm, the thickness of the column cap is 8-10 mm, and the specific size of the column cap can be adjusted according to the intensity of roadway mine pressure.
c. And the column shoe 3 is formed by welding a rectangular steel plate at the bottom end part of the silicon-manganese steel pipe by using an electric welding process, the steel plate is rectangular and rigid, the steel plate is a Q235 common plate, the column shoe is a Q235 rectangular steel plate, the width and the length are 300 x 400mm, the thickness is 8-10 mm, and the specific size can be adjusted according to the intensity of the roadway mine pressure.
d. Chuck 4 uses electric welding technology at silicomanganese steel pipe middle part welding disc, and specific position can be adjusted according to the tunnel height, and disc diameter 15cm uses steel to be the ordinary panel welding of Q235, and the manometer of being convenient for is placed the back and is measured lateral pressure.
The invention will be further described with reference to the following specific examples:
example (b):
a gob-side entry retaining roadway of a certain coal mine three-soft coal seam is 4.5 multiplied by 2.8m in width multiplied by height, surrounding rocks are easy to soften when meeting water, the roadway is greatly influenced by mining, a top bottom plate is seriously deformed, a side bulge is serious, and for controlling the large deformation of the roadway, a silicomanganese steel pipe is used for retaining waste rock for supporting, and the gob-side entry retaining roadway is specifically as follows:
according to the height size of a roadway reserved along a gob-side entry retaining by roof cutting and pressure relief, a 27 silicomanganese steel pipe (with the wall thickness of 10mm and the outer diameter of 114mm) is cut, a Q235 steel plate (with the thickness of 10mm) is cut by 200 x 300 and 300 x 400, the two ends of the silicomanganese steel pipe are welded with the steel plates and then are subjected to gangue blocking support on site, and a pressure gauge is arranged in a circular chuck in the middle of the silicomanganese steel pipe, so that the lateral pressure of a crushed stone side in a goaf can be monitored.
The field application shows that the construction is convenient during waste rock retaining and supporting, the bending deformation phenomenon does not occur, and the lateral pressure of the broken stone side in the goaf can be monitored in real time.
Claims (6)
1. The utility model provides a pillar for gob entry side gangue blocking struts, its characterized in that, including propping up silicomanganese steel pipe (2) of establishing in gob entry side of broken stone group, the top welding of silicomanganese steel pipe (2) has cap (1), and the bottom welding has column shoe (3), and the middle part welding has chuck (4) that are used for installing the manometer, the manometer is used for monitoring broken stone group and stays lane side lateral pressure, cap (1) and column shoe (3) are the rectangle steel sheet, during the use, cap (1) and column shoe (3) direct action are in the side lane group of staying lane and play the gangue blocking effect.
2. The support pillar for gob-side entry retaining gangue support according to claim 1, wherein the length of the silicomanganese steel pipe is 250-280 cm.
3. The support column for retaining gangue support along gob-side entry retaining according to claim 1, wherein the silicomanganese steel pipe is a hollow cylinder, and has an outer diameter of 100-120 mm and a wall thickness of 8-10 mm.
4. The prop for gob-side entry retaining gangue support according to claim 1, wherein the prop shoe (3) is a Q235 rectangular steel plate with a width by length of 300 x 400mm and a thickness of 8-10 mm.
5. The support column for gob-side entry retaining gangue support according to claim 1, wherein the cap (1) is a Q235 rectangular steel plate with a width by length of 200 x 300mm and a thickness of 8-10 mm.
6. The support column for gob-side entry retaining gangue support according to claim 1, wherein the chuck (4) is a disk with a diameter of 15cm, and is welded in the middle of the silicon-manganese steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020308289.4U CN211737164U (en) | 2020-03-12 | 2020-03-12 | Support column for gob-side entry retaining gangue retaining support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020308289.4U CN211737164U (en) | 2020-03-12 | 2020-03-12 | Support column for gob-side entry retaining gangue retaining support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211737164U true CN211737164U (en) | 2020-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020308289.4U Active CN211737164U (en) | 2020-03-12 | 2020-03-12 | Support column for gob-side entry retaining gangue retaining support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211737164U (en) |
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2020
- 2020-03-12 CN CN202020308289.4U patent/CN211737164U/en active Active
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