CN205297580U - Soft rock bate distension control structure - Google Patents
Soft rock bate distension control structure Download PDFInfo
- Publication number
- CN205297580U CN205297580U CN201620043438.2U CN201620043438U CN205297580U CN 205297580 U CN205297580 U CN 205297580U CN 201620043438 U CN201620043438 U CN 201620043438U CN 205297580 U CN205297580 U CN 205297580U
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- soft rock
- cable anchor
- grouting cable
- control structure
- arched ribs
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Abstract
The utility model discloses a soft rock bate distension control structure, it comprises slip casting anchor rope, hunch reinforced concrete collar tie beam of the anti - end and plain concrete, the anti - end of its characterized in that is encircleed the reinforced concrete collar tie beam and is built after the slip casting of slip casting anchor rope is accomplished, and the lower surface is arc and country rock contact, and plain concrete to bottom plate level is built on the surface above that, forms to strut the coupling of soft rock tunnel bottom plate. The utility model discloses can effectively solve the end distension deforming and breaking who relapses behind the soft rock roadway support, avoid the maintenance of soft rock tunnel relapse, have very high economic value.
Description
Technical field
This utility model relates to soft rock roadway support field, particularly relates to a kind of Soft Rock Roadway Floor Heave control structure.
Background technology
The deformation of soft-rock tunnel is one of mining in soft rock mining main harm affecting Safety of Coal Mine Production, and end distension often accounts for more than 3/4ths of Deformation in Soft Rock Tunnel total amount. Distension deformation in the end causes that soft-rock tunnel section reduces, and causes drift closure, affect tunnel and normally use, bring hidden danger to mine safety production time serious.
The end distension of soft-rock tunnel is often country rock squeezing flow, rock expansion, the shearing changing of the relative positions, several mechanism compound action formation of compaction flexture. Present stage administers the scheme of end distension mainly to be had by various forms of high strong supportings such as baseboard anchor cable, base plate anchor pole, floor grouting, FLOOR ANCHOR. Many methods often working procedure is complicated and effect is poor, single anchor pole, the end distension of slip casting often uncontrollable soft-rock tunnel, bring unnecessary trouble also can to repair of laneway process.
As patent 201210472254.4 discloses a kind of simple anchor note technique, this method is poor effect in have the end distension of soft-rock tunnel of hydrops or back trickle to administer at roadway floor. Patent 200910030300.3 discloses the method for a kind of base angle anchor note preventing and treating end distension, and the method only strengthens base angle, but ignores the reinforcing to floor rocks, produces little effect in practical engineering application.
Summary of the invention
The purpose of this utility model is in that, it is provided that a kind of Soft Rock Roadway Floor Heave control structure, it is possible to effectively control the end distension of soft-rock tunnel, it is to avoid tunnel is constantly reprocessed because of the appearance of end distension phenomenon, it is ensured that the safe efficient production in colliery, mining in soft rock mining.
For realizing object above, this utility model one Soft Rock Roadway Floor Heave control structure, it is made up of grouting cable anchor, arch reinforced concrete circle beam of the anti-end and plain concrete, it is characterized in that arch reinforced concrete circle beam of the anti-end waters after grouting cable anchor slip casting completes, lower surface is curved to be contacted with country rock, and plain concrete is built to floor level in surface thereon.
Described grouting cable anchor selects the hollow grouting cable anchor of �� 22mm �� 6000mm.
The described arched ribs in arch reinforced concrete circle beam of the anti-end selects �� 20-22mm screw-thread steel, point upper and lower two-layer, 4 every layer, and every arched ribs spacing 150mm is inserted in ready made stirrup; �� 10mm screw-thread steel selected by stirrup, and it is the rectangle of 300 �� 450mm that ground fabrication and processing in advance becomes high �� wide, and stirrup and arched ribs infall adopt 14# iron wire and arched ribs colligation to fix.
Construction method of the present utility model is:
First: after soft-rock tunnel excavates according to design size, base plate is in and opens wide not supporting state, after deformation of the surrounding rock in tunnel speed tends towards stability, every 10m is a unit, roadway floor is carried out full face tunneling, cutting depth 300mm deeper in terrace 2, drift section width 4.5-5m. This process, it should be noted that the release of pressure from surrounding rock, promotes floor rocks crack to reach full growth, it is ensured that effective diffusion of serosity during slip casting;
Second: at the roadway floor excavated, excavate an arcuate furrow, groove from the deep 1000mm of terrace, is decremented to 400mm, ditch groove width 600mm, groove centrage and centrage between spacing 2000-3000mm to roadway's sides in center, tunnel;
3rd: after arcuate furrow digs by design, in arcuate furrow, set three grouting cable anchors 5, by grouting cable anchor 5 to floor grouting. Grouting serous fluid selects the cement mortar of 42.5MPa Portland cement preparation, ratio of mud 0.6:1, in slip casting process, adds suitable quantity of water glass and controls running pulp amount. Grouting cable anchor 5 chooses the hollow grouting cable anchor of �� 22mm �� 6000mm, and every grouting cable anchor 5 coordinates 3 K2550 type water resistant Anchor Agents, improves the stress of roadway floor deep wall rock, improves the stability in the large of roadway floor;
4th: by grouting cable anchor 5 to after base plate deep wall rock slip casting, by the arched ribs 9 processed and stirrup 3 colligation at the scene, arched ribs spacing 150mm, every layer 4 side by side, lower floor's arched ribs 9 is not less than 100mm apart from the vertical dimension of roadway floor 7, ensures that the exposed parts of grouting cable anchor 5 passes from reinforcing bar hole in process of binding. Watering C60 concrete eight in arcuate furrow, vibrate while water, concrete eight is fully wrapped around by reinforcing bar, and is formed in reinforcing bar periphery and be not less than the thick protective layer of 50mm, after grouting cable anchor 5 exposed parts is added anchor cable pallet 6 after pressurize, pretightning force is not less than 120KN. Reinforcing bar and concrete eight are combined into armored concrete bearing-load arch, and by the pretightning force that grouting cable anchor 5 applies, effective carrying two helps to pass to a bearing capacity of floor rocks, improves the stability of floor rocks;
5th: after grouting cable anchor has pressurizeed, to arcuate furrow and an end section pouring C40 concrete eight extremely original design size, mixing ratio by weight is cement: sand: stone=1:1.62:2.54, ground mix homogeneously, underground site adds water stirring, and the ratio of mud is 0.37, adds the waterproofing agent of concrete gross mass 1��2%, improve the permeability resistance of underplate concrete, reduce the extraneous water interference to floor rocks.
This utility model has the advantages that
(1) base plate deep wall rock adopts grouting cable anchor, effectively encloses crack, improves floor rocks stress, improves bearing capacity and the stability of floor rocks;
(2) baseplate reinforcing bar and concrete form arch ring beam of the anti-end, by means of the prestressing force that grouting cable anchor applies, form effective bearing-load arch, improve the stress of country rock, improve the stability of floor rocks;
(3) the building of underplate concrete, has effectively completely cut off tunnel trickle, base plate hydrops etc. to the erosion of base plate, destruction.
Accompanying drawing explanation
Fig. 1 is roadway grouting anchor cable, arch ring beam of the anti-end, underplate concrete section layout drawing;
Fig. 2 is the top view of end distension control program;
Fig. 3 is the location diagram of arch ring beam arched ribs of the anti-end and stirrup;
In figure, 1-roadway's sides, 2-terrace, 3-stirrup, 5-grouting cable anchor, 6-anchor cable pallet, 7-base plate, 8-concrete, 9-arched ribs.
Detailed description of the invention
As shown in the figure, this utility model one Soft Rock Roadway Floor Heave control structure, it is made up of grouting cable anchor, arch reinforced concrete circle beam of the anti-end and plain concrete, it is characterized in that arch reinforced concrete circle beam of the anti-end waters after grouting cable anchor slip casting completes, lower surface is curved to be contacted with country rock, and plain concrete is built to floor level in surface thereon. Described grouting cable anchor selects the hollow grouting cable anchor of �� 22mm �� 6000mm. The described arched ribs in arch reinforced concrete circle beam of the anti-end selects �� 20-22mm screw-thread steel, point upper and lower two-layer, 4 every layer, and every arched ribs spacing 150mm is inserted in ready made stirrup; �� 10mm screw-thread steel selected by stirrup, and it is the rectangle of 300 �� 450mm that ground fabrication and processing in advance becomes high �� wide, and stirrup and arched ribs infall adopt 14# iron wire and arched ribs colligation to fix.
Construction method of the present utility model is:
First: after soft-rock tunnel excavates according to design size, base plate is in and opens wide not supporting state, after deformation of the surrounding rock in tunnel speed tends towards stability, every 10m is a unit, roadway floor is carried out full face tunneling, cutting depth 300mm deeper in terrace 2, drift section width 4.5-5m. This process, it should be noted that the release of pressure from surrounding rock, promotes floor rocks crack to reach full growth, it is ensured that effective diffusion of serosity during slip casting;
Second: at the roadway floor excavated, excavate an arcuate furrow, groove from the deep 1000mm of terrace, is decremented to 400mm, ditch groove width 600mm, groove centrage and centrage between spacing 2000-3000mm to roadway's sides in center, tunnel;
3rd: after arcuate furrow digs by design, in arcuate furrow, set three grouting cable anchors 5, by grouting cable anchor 5 to floor grouting. Grouting serous fluid selects the cement mortar of 42.5MPa Portland cement preparation, ratio of mud 0.6:1, in slip casting process, adds suitable quantity of water glass and controls running pulp amount. Grouting cable anchor 5 chooses the hollow grouting cable anchor of �� 22mm �� 6000mm, and every grouting cable anchor 5 coordinates 3 K2550 type water resistant Anchor Agents, improves the stress of roadway floor deep wall rock, improves the stability in the large of roadway floor;
4th: by grouting cable anchor 5 to after base plate deep wall rock slip casting, by the arched ribs 9 processed and stirrup 3 colligation at the scene, arched ribs spacing 150mm, every layer 4 side by side, lower floor's arched ribs 9 is not less than 100mm apart from the vertical dimension of roadway floor 7, ensures that the exposed parts of grouting cable anchor 5 passes from reinforcing bar hole in process of binding. Watering C60 concrete eight in arcuate furrow, vibrate while water, concrete eight is fully wrapped around by reinforcing bar, and is formed in reinforcing bar periphery and be not less than the thick protective layer of 50mm, after grouting cable anchor 5 exposed parts is added anchor cable pallet 6 after pressurize, pretightning force is not less than 120KN. Reinforcing bar and concrete eight are combined into armored concrete bearing-load arch, and by the pretightning force that grouting cable anchor 5 applies, effective carrying two helps to pass to a bearing capacity of floor rocks, improves the stability of floor rocks;
5th: after grouting cable anchor has pressurizeed, to arcuate furrow and an end section pouring C40 concrete eight extremely original design size, mixing ratio by weight is cement: sand: stone=1:1.62:2.54, ground mix homogeneously, underground site adds water stirring, and the ratio of mud is 0.37, adds the waterproofing agent of concrete gross mass 1��2%, improve the permeability resistance of underplate concrete, reduce the extraneous water interference to floor rocks.
Base plate release during beginning, has been effectively promoted the cranny development of floor rocks, it is ensured that effective diffusion of serosity during by grouting cable anchor 5 to the slip casting of base plate deep wall rock, slip casting encloses the crack of deep wall rock, improves the stability in the large of floor rocks. Arched ribs 9 and stirrup 3 form the bar construction of section as shown in Figure 3, arch ring beam of the anti-end is formed after this structure placing concrete, by means of the pretightning force that grouting cable anchor 5 applies, this concrete collar tie beam effectively carries helps 1 pressure passing to base plate by two, improves the stress of floor rocks.
Soft Rock Roadway Floor Heave can be effectively prevented in the enforcement of this structure, it is ensured that after supports of soft rock excavation, tunnel will not occur big end distension to deform, it is to avoid the repeating of tunnel is reprocessed, and reduces human and material resources and puts into, it is ensured that the safe efficient production in colliery, mining in soft rock mining.
Claims (3)
1. a Soft Rock Roadway Floor Heave control structure, it is made up of grouting cable anchor, arch reinforced concrete circle beam of the anti-end and plain concrete, it is characterized in that arch reinforced concrete circle beam of the anti-end waters after grouting cable anchor slip casting completes, lower surface is curved to be contacted with country rock, and plain concrete is built to floor level in surface thereon.
2. a kind of Soft Rock Roadway Floor Heave control structure according to claim 1, it is characterised in that described grouting cable anchor selects the hollow grouting cable anchor of �� 22mm �� 6000mm.
3. a kind of Soft Rock Roadway Floor Heave control structure according to claim 1, it is characterised in that the described arched ribs in arch reinforced concrete circle beam of the anti-end selects �� 20-22mm screw-thread steel, divide upper and lower two-layer, 4 every layer, every arched ribs spacing 150mm, is inserted in ready made stirrup; �� 10mm screw-thread steel selected by stirrup, and it is the rectangle of 300 �� 450mm that ground fabrication and processing in advance becomes high �� wide, and stirrup and arched ribs infall adopt 14# iron wire and arched ribs colligation to fix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620043438.2U CN205297580U (en) | 2016-01-18 | 2016-01-18 | Soft rock bate distension control structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620043438.2U CN205297580U (en) | 2016-01-18 | 2016-01-18 | Soft rock bate distension control structure |
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| CN205297580U true CN205297580U (en) | 2016-06-08 |
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| CN201620043438.2U Expired - Fee Related CN205297580U (en) | 2016-01-18 | 2016-01-18 | Soft rock bate distension control structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968140A (en) * | 2017-04-16 | 2017-07-21 | 中铁二院工程集团有限责任公司 | Structure and construction method are repaired in a kind of non-fragment orbit railway tunnel arch |
| CN109083660A (en) * | 2018-08-22 | 2018-12-25 | 山东建筑大学 | Soft Rock Roadway (tunnel) road pucking based on armored concrete bottom beam administers supporting construction and method |
| CN110259479A (en) * | 2019-06-18 | 2019-09-20 | 山东科技大学 | Loose crushing country rock of soft rock roadway reinforcement means |
| CN111636899A (en) * | 2020-04-20 | 2020-09-08 | 中铁十八局集团有限公司 | Tunnel inverted arch structure for preventing bottom bulging and construction process |
| CN112112667A (en) * | 2020-09-14 | 2020-12-22 | 赵华山 | Method for treating soft rock baseplate foundation of large-section chamber |
| CN113006817A (en) * | 2021-05-08 | 2021-06-22 | 上海应用技术大学 | Upper and bottom combined supporting structure capable of yielding and construction method thereof |
| CN113738422A (en) * | 2021-10-09 | 2021-12-03 | 西安科技大学 | Method for calculating and controlling floor heave amount of soft rock roadway and method for determining control method |
-
2016
- 2016-01-18 CN CN201620043438.2U patent/CN205297580U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968140A (en) * | 2017-04-16 | 2017-07-21 | 中铁二院工程集团有限责任公司 | Structure and construction method are repaired in a kind of non-fragment orbit railway tunnel arch |
| CN109083660A (en) * | 2018-08-22 | 2018-12-25 | 山东建筑大学 | Soft Rock Roadway (tunnel) road pucking based on armored concrete bottom beam administers supporting construction and method |
| CN110259479A (en) * | 2019-06-18 | 2019-09-20 | 山东科技大学 | Loose crushing country rock of soft rock roadway reinforcement means |
| CN111636899A (en) * | 2020-04-20 | 2020-09-08 | 中铁十八局集团有限公司 | Tunnel inverted arch structure for preventing bottom bulging and construction process |
| CN111636899B (en) * | 2020-04-20 | 2021-12-28 | 中铁十八局集团有限公司 | Tunnel inverted arch structure for preventing bottom bulging and construction process |
| CN112112667A (en) * | 2020-09-14 | 2020-12-22 | 赵华山 | Method for treating soft rock baseplate foundation of large-section chamber |
| CN113006817A (en) * | 2021-05-08 | 2021-06-22 | 上海应用技术大学 | Upper and bottom combined supporting structure capable of yielding and construction method thereof |
| CN113738422A (en) * | 2021-10-09 | 2021-12-03 | 西安科技大学 | Method for calculating and controlling floor heave amount of soft rock roadway and method for determining control method |
| CN113738422B (en) * | 2021-10-09 | 2024-04-09 | 西安科技大学 | Determination method of soft rock roadway floor heave amount calculation, control and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20170118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |