CN103527221B - A kind of base plate steel tubular beam for mine deep support engineering and using method thereof - Google Patents
A kind of base plate steel tubular beam for mine deep support engineering and using method thereof Download PDFInfo
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- CN103527221B CN103527221B CN201310504200.6A CN201310504200A CN103527221B CN 103527221 B CN103527221 B CN 103527221B CN 201310504200 A CN201310504200 A CN 201310504200A CN 103527221 B CN103527221 B CN 103527221B
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- tubular beam
- base plate
- steel tubular
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- plate steel
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of base plate steel tubular beam for mine deep support engineering and using method thereof; By at steel pipe two ends weldable steel backing plate, bar shaped backing plate and short angle limb, composition base plate steel tubular beam; Adopt roadway floor fluting to lay the construction technology of base plate steel tubular beam, while roadway's sides footing applies cross binding power, reduce the interference to vehicle operation; Base plate steel tubular beam and existing supporting association form closes support system, effectively improves supporting intensity and the rigidity of mine working base plate; And be aided with the measure of backfill rubble in groove of backbreaking, reduce floor lift in gallery to the disturbance of base plate steel tubular beam.The present invention provides cross binding power by base plate steel tubular beam, improves roadway floor ambient stress, controls floor lift in gallery, extends and reprocesses the cycle; Base plate steel tubular beam makes simple, easy to use, the recyclable recycling of material therefor.
Description
Art
The present invention relates to a kind of base plate steel tubular beam for mine deep support engineering and using method thereof, be particularly applied to horizontal structural s tress and give prominence to and the floor lift in gallery Deformation control that inverted arch supporting cannot be implemented.
Background technology
Along with the development of national economy, country constantly increases the demand of metal material, and domestic non-ferrous metal mining progresses into deep mining environment, under maintenance does not reduce the prerequisite of metal material output, need strict control production cost, and ensure the safety problem in recovery process.Because deep mining requirement of engineering solves the problems of rock mechanics under highland pressure, hyperosmosis environment, especially the mining area that tectonic stress is outstanding, its pressure ring border, ground is more complicated, Rock Slide Stability condition is poorer, this is carrying out in tunnelling process with regard to needs, the strength and stiffness of continuous increase supporting and protection structure, the continuous increase of corresponding is tunnel initating cost, but mine company's economic benefit aspect determines again ore extraction cost can not immoderately be increased.Add in tunnelling process, mining machinery running is frequent, causes the antiarch supporting method of Theory comparison maturation cannot apply in the mine deep tunnelling of stress condition extreme complexity.Current domestic nonferrous metals ore deep tunnel supporting method, mainly on the basis of superficial part support form, completes schematic design by increasing supporting parameter.This design concept Problems existing is: prop cannot form closed bearing structure, roadway floor is made to become the break-through point of deformation instability, especially in the mining area that in the horizontal direction tectonic stress is outstanding, the base plate of non-support measure often becomes the initiation point of supporting and protection structure inefficacy, floor lift in gallery is serious, and then has influence on the stability in whole tunnel.
Summary of the invention
For overcoming in mine deep excavation process, roadway floor cannot apply effective support, or when the closed prop of composition is had any problem, causes floor lift in gallery to be out of shape serious, and then affect the stability in whole tunnel.The present invention designs a kind of base plate steel tubular beam supporting and protection structure, and by laterally laying steel tubular beam at roadway floor fluting, forming the base plate steel tubular beam supporting in tunnel, and constituting jointly closed support system with existing supporting and protection structure.
Base plate steel tubular beam of the present invention, be symmetrically welded billet at steel pipe two ends, and every 60 ° of (or 90 °) annular solder, 6 pieces of (or 4 pieces) bar shaped backing plates on billet, then short angle limb is welded on bar shaped backing plate and steel pipe, composition steel tubular beam, the billet centre of form is positioned on steel pipe axial line.
Bar shaped backing plate is rectangular steel plates, and its thickness is not less than short angle limb steel plate thickness, and its width is not less than 3 times of thickness.
Short angle limb is for chamfering rectangular steel plates, and the angle of line of cut and steel pipe axis of chamfering is 30 ° ~ 45 °.
The Specific construction process that steel tubular beam is laid at roadway floor comprises following process:
(1) roadway floor excavation groove: cell wall and steel pipe clear distance are not less than 100mm, and bottom land minimum-depth is greater than outer diameter of steel pipes and is not less than 200mm, select bottom land to be plane or recessed curved form.
(2) overlay bottom land rubble: in the groove held successfully, overlay the rubble that grating is good, rubble paving more than 25mm, and must not be not less than outer diameter of steel pipes size to apart from roadway floor height by the maximum particle of crushed stone, leveling rubble surface.
(3) steel tubular beam is laid: base plate steel tubular beam shaping for welding assembly be laid on and overlay in the groove of rubble, and guarantee that base plate steel tubular beam axial line is in steel arch-shelf plane, check steel tubular beam simultaneously and be placed in below base plate plane, to reduce the interference normally run running vehicle.
(4) fixing steel tubular beam end: concreting in space outside billet and between crag, the connection of fixing steel tubular beam and steel arch-shelf, and note the protection of watering building body.
(5) backfill rubble in groove: backfill rubble to concordant with roadway floor in the space in groove.
The present invention has the beneficial effect of following aspect: 1, base plate steel tubular beam and existing support system constitute jointly closed support system, strengthen prop bulk strength and rigidity, 2, end billet can increase the active area of cross binding power, the concentrated stress of bar shaped backing plate energy peptizaiton on the limb of short angle, the angle of line of cut and steel pipe axis of chamfering of short angle limb is 30 ° ~ 45 °, is conducive to increasing its support strength and stability; 3, base plate fluting lays steel tubular beam, little to vehicle operation interference; 4, groove of backbreaking is interior backfills rubble, reduces the disturbance of end distension distortion to base plate steel tubular beam; 5, steel pipe adopts shaped steel, and material source is wide; 6, the processing of base plate steel tubular beam is easy with laying method.
Accompanying drawing explanation
Fig. 1 is base plate steel tubular beam associating section-steel support elevation.
Fig. 2 is the A-A sectional drawing of accompanying drawing 1.
Fig. 3 is steel tubular beam end elevation view.
Fig. 4 is the B-B sectional drawing of accompanying drawing 3.
Detailed description of the invention
For describing specific embodiment of the invention method in detail, hereafter making for the base plate steel tubular beam under section-steel support and being described with laying method.
The type selecting of steel pipe: according to design cross binding power and span length, determine steel pipe inside/outside diameter size meeting under the axial compression coefficient of stability is not less than the condition of 0.8, and meet the requirement of monolithic stability according to billet local stability, the size of form design billet 4, bar shaped backing plate 6 and short angle limb 7 according to Fig. 4.The structure of base plate steel tubular beam is: at steel pipe 1 two ends weldable steel backing plate 4, and every 90 ° of annular solder, 4 pieces of bar shaped backing plates 6 on billet 4, then short angle limb 7 is welded on bar shaped backing plate 6 with on steel pipe 1, composition steel tubular beam, the centre of form of billet 4 is positioned on the axial line of steel pipe 1.
Short angle limb is for chamfering rectangular steel plates, and the angle of line of cut and steel pipe axis of chamfering is 30 °.
The Specific construction process that steel tubular beam is laid at roadway floor comprises following process:
1. roadway floor excavation groove: as shown in Figures 1 and 2, cell wall and steel pipe 1 clear distance are not less than 100mm, bottom land minimum-depth is greater than steel pipe 1 external diameter and is not less than 200mm, and in conjunction with floor lift in gallery situation, selection bottom land is plane (end distension is not serious) or lower concave curved surface (end distension is serious) form.
2. overlay bottom land rubble 3: in the groove held successfully, overlay the good rubble of grating 3, rubble paving more than 25mm, and must not be not less than outer diameter of steel pipes size to apart from roadway floor height by the maximum particle of crushed stone, leveling rubble surface.
3. lay steel tubular beam: base plate steel tubular beam shaping for welding assembly be laid in the groove overlaying rubble 3, and guarantee that base plate steel tubular beam axial line is in steel arch-shelf plane, check steel tubular beam simultaneously and be placed in below base plate plane, to reduce the interference normally run running vehicle.
4 fixing steel tubular beam ends: as shown in Figure 2, concreting 5 in space outside billet and between crag, the connection of fixing steel tubular beam and steel arch-shelf 2, and note the protection of watering building body.
5. backfill rubble 3 in groove: backfill rubble to concordant with roadway floor in the space in groove.
Claims (5)
1. the base plate steel tubular beam for mine deep support engineering, it is characterized in that: be symmetrically welded billet at steel pipe two ends, and every 60 ° or 90 ° of annular solder, 6 pieces or 4 pieces bar shaped backing plates on billet, again short angle limb is welded on bar shaped backing plate and steel pipe, composition base plate steel tubular beam, the billet centre of form is positioned on steel pipe axial line.
2. the base plate steel tubular beam for mine deep support engineering according to claim 1, is characterized in that: described bar shaped backing plate is rectangular steel plates, its thickness is not less than short angle limb steel plate thickness, and width is not less than 3 times of thickness.
3. the base plate steel tubular beam for mine deep support engineering according to claim 1, is characterized in that: described short angle limb is for chamfering rectangular steel plates, and the angle of line of cut and steel pipe axis of chamfering is 30 ° ~ 45 °.
4., according to claim 1 for the using method of the base plate steel tubular beam of mine deep support engineering, it is characterized in that comprising the following steps:
(1) roadway floor excavation groove: cell wall and steel pipe clear distance are not less than 100mm, and bottom land minimum-depth is greater than outer diameter of steel pipes and is not less than 200mm, select bottom land to be plane or recessed curved form;
(2) overlay bottom land rubble: in the groove held successfully, overlay the rubble that grating is good, and rubble paving is not less than outer diameter of steel pipes size to apart from roadway floor height, leveling rubble surface;
(3) lay steel tubular beam: base plate steel tubular beam shaping for welding assembly be laid on and overlay in the groove of rubble, and guarantee that base plate steel tubular beam axial line is in steel arch-shelf plane, check steel tubular beam simultaneously and be placed in below base plate plane;
(4) fixing steel tubular beam end: concreting in space outside billet and between crag, the connection of fixing steel tubular beam and steel arch-shelf;
(5) backfill rubble in groove: backfill rubble to concordant with roadway floor in the space in groove.
5. according to claim 4 for the using method of the base plate steel tubular beam of mine deep support engineering, it is characterized in that: the stone sizes described in step (2) is less than 25mm, and be ganoid cobble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310504200.6A CN103527221B (en) | 2013-10-24 | 2013-10-24 | A kind of base plate steel tubular beam for mine deep support engineering and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310504200.6A CN103527221B (en) | 2013-10-24 | 2013-10-24 | A kind of base plate steel tubular beam for mine deep support engineering and using method thereof |
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| Publication Number | Publication Date |
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| CN103527221A CN103527221A (en) | 2014-01-22 |
| CN103527221B true CN103527221B (en) | 2016-02-17 |
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| CN201310504200.6A Expired - Fee Related CN103527221B (en) | 2013-10-24 | 2013-10-24 | A kind of base plate steel tubular beam for mine deep support engineering and using method thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE965845C (en) * | 1951-03-21 | 1957-06-27 | Karl Gross Dr Ing | Flexible joint construction in steel for routes, crosscuts, etc. like |
| GB816548A (en) * | 1957-01-12 | 1959-07-15 | Johann Usspurwies G M B H | Improvements in or relating to mine shores |
| DE1118718B (en) * | 1957-11-13 | 1961-12-07 | Gemeinnuetzige Schwerbeschaedi | Sole protection for the extension of the route by sole runners, especially for half-steep and steep storage |
| AU4566579A (en) * | 1978-05-31 | 1979-12-06 | Voest-Alpine A.G. | Device for supporting a gallery or a tunnel |
| SU1668681A1 (en) * | 1988-07-07 | 1991-08-07 | Artyukhov Sergej P | Support for mine working |
| CN101852083A (en) * | 2010-04-16 | 2010-10-06 | 中国科学院武汉岩土力学研究所 | Quick supporting method for large-deformation roadway easy to fall, break and loosen and apparatus thereof |
| CN102725481A (en) * | 2010-01-29 | 2012-10-10 | 伊莱斯杰特尼卡公司 | Rib for supporting and reinforcing an excavation |
| CN202851012U (en) * | 2012-10-25 | 2013-04-03 | 金诚信矿业管理股份有限公司 | Supporting steel arch |
| CN103291328A (en) * | 2013-06-29 | 2013-09-11 | 湖南科技大学 | Swelling rock roadway bottom plate treatment method |
-
2013
- 2013-10-24 CN CN201310504200.6A patent/CN103527221B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE965845C (en) * | 1951-03-21 | 1957-06-27 | Karl Gross Dr Ing | Flexible joint construction in steel for routes, crosscuts, etc. like |
| GB816548A (en) * | 1957-01-12 | 1959-07-15 | Johann Usspurwies G M B H | Improvements in or relating to mine shores |
| DE1118718B (en) * | 1957-11-13 | 1961-12-07 | Gemeinnuetzige Schwerbeschaedi | Sole protection for the extension of the route by sole runners, especially for half-steep and steep storage |
| AU4566579A (en) * | 1978-05-31 | 1979-12-06 | Voest-Alpine A.G. | Device for supporting a gallery or a tunnel |
| SU1668681A1 (en) * | 1988-07-07 | 1991-08-07 | Artyukhov Sergej P | Support for mine working |
| CN102725481A (en) * | 2010-01-29 | 2012-10-10 | 伊莱斯杰特尼卡公司 | Rib for supporting and reinforcing an excavation |
| CN101852083A (en) * | 2010-04-16 | 2010-10-06 | 中国科学院武汉岩土力学研究所 | Quick supporting method for large-deformation roadway easy to fall, break and loosen and apparatus thereof |
| CN202851012U (en) * | 2012-10-25 | 2013-04-03 | 金诚信矿业管理股份有限公司 | Supporting steel arch |
| CN103291328A (en) * | 2013-06-29 | 2013-09-11 | 湖南科技大学 | Swelling rock roadway bottom plate treatment method |
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| CN103527221A (en) | 2014-01-22 |
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