CN202851027U - Support system treating soft rock roadway floor heaves - Google Patents
Support system treating soft rock roadway floor heaves Download PDFInfo
- Publication number
- CN202851027U CN202851027U CN 201220356988 CN201220356988U CN202851027U CN 202851027 U CN202851027 U CN 202851027U CN 201220356988 CN201220356988 CN 201220356988 CN 201220356988 U CN201220356988 U CN 201220356988U CN 202851027 U CN202851027 U CN 202851027U
- Authority
- CN
- China
- Prior art keywords
- anchor
- anchor pole
- roadway
- support system
- pole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model discloses a support system treating soft rock roadway floor heaves. A top plate of a roadway along the roadway direction is provided with an anchor rod and an anchor cable from left to right through a W steel band and is connected with a coal layer, the left side and the right side of the roadway are respectively provided with anchor rods from top to bottom, the middle of a bottom plate of the roadway is provided with a decompression groove, a quicklime powder layer is laid in the decompression groove, the decompression groove is connected with the quicklime powder layer, the bottom plate is provided with a gutterway, a quicklime powder layer is laid in the bottom of the gutterway, the left lower foot and the right lower foot of the bottom plate of the roadway are respectively provided with a tube-seam-type anchor rod and the other tube-seam-type anchor which are provided with anchor rods inside, and the left lower foot and the right lower foot of the bottom plate of the roadway are connected with the coal layer. The support system has the advantages that the structure is simple, installation is convenient, support strength is firm, surrounding rock stress of the roadway is converted to deep rocks, the decompression groove is formed in the bottom plate, displacement of the floor heaves moves towards the inner side of the groove, overall horizontal stress of the roadway is reduced, waterlogging in the roadway cannot leak into the aluminum mud rock base plate, and the soft rock roadway floor heaves are effectively prevented, pulling resistance of the anchor rods is not less than 50 kN, pretightening force of the top anchor cable is larger than 100 kN, and the support system is widely used in construction of underground projects.
Description
Technical field
The utility model relates to the supporting in Underground Soft Rock tunnel, is specifically related to-kind administers the support system of Soft Rock Roadway Floor Heave.
Background technology
Existing coal-face must excavate haulage drift and the airway of transportation coal before back production, all excavate on seat earth in this tunnel, and coal seam floor mostly is aluminium matter mud stone, and the bedding of its aluminium matter mud stone, joints development are flourishing, and the intensity of rock stratum is lower, meets easily softening expansion of water.Thereby cause the one of the main reasons of floor lift in gallery.Another reason is affected by the back production dynamic pressure, cause surrouding rock stress to increase, former supporting intensity is inadequate, therefore, also cause floor lift in gallery, its distension amount of maximum end can reach 500～1000mm, because end distension amount is larger, the tunnel forms rough and uneven in surface, exists the transporter in the haulage drift can't lay and unsafe defective.Simultaneously, some colliery does not produce end distension in order to reach the tunnel, and in the coal seam, the bottom, tunnel is left at least two meters thick coal seams and do not carried out back production, thereby brings the low defective of the rate of extraction, has wasted greatly non-renewable energy resources with the haulage drift excavation.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, and is easy for installation, and supporting intensity is firm, make roadway surrounding rock stress turn to deep rock mass-kind administer the support system of Soft Rock Roadway Floor Heave.
In order to overcome the deficiencies in the prior art, the technical solution of the utility model is to solve like this: the support system of-kind of improvement Soft Rock Roadway Floor Heave comprises a digging tunnel, the W steel band, anchor cable, anchor pole, butterfly pallet, pallet, gas pressure relief slot, pipe-seam type anchor rod, twisted steel anchor rod, special character of the present utility model is that described digging tunnel is along by the W steel band the first anchor pole being installed respectively from left to right on the top board of tunnel trend, the second anchor pole, the 3rd anchor pole, the 4th anchor pole, the 5th anchor pole, the 6th anchor pole, the 7th anchor pole, the 8th anchor pole and the first anchor cable, the second anchor cable, the 3rd anchor cable, the 4th anchor cable, the 5th anchor cable is connected with the coal seam, described digging tunnel Zuo Qiang installs the 9th anchor pole from top to bottom, the tenth anchor pole, the 11 anchor pole, the 12 anchor pole, right wall is installed the 14 anchor pole from top to bottom, the 15 anchor pole, the 16 anchor pole, the 17 anchor pole, the afterbody of above-mentioned every anchor pole is connected with butterfly pallet by nut, have gas pressure relief slot in the middle of the described digging roadway floor, lay the quicklime bisque in the gas pressure relief slot, described gas pressure relief slot one end is connected with plain concrete and quicklime bisque, described base plate left end or right-hand member have the ditch, lay the quicklime bisque in the bottom in ditch, an inclination pipe-seam type anchor rod and interpolation one inclination anchor pole are installed respectively in described digging roadway floor lower left corner and lower right corner, supporting plate is installed in a described inclination anchor pole end, with another inclination pipe-seam type anchor rod and another inclination anchor pole of interpolation, described another inclination anchor pole end is installed supporting plate and is connected with the coal seam.
One pipe-seam type anchor rod and another pipe-seam type anchor rod and coal seam connect as one.
Described anchor pole is twisted steel anchor rod.
The pipe-seam type anchor rod interpolation twisted steel anchor rod of footing, injected water mud in the pipe.
Described footing bolt diameter is Φ 42mm～Φ 44mm pipe-seam type anchor rod, and length is 2000mm～3000mm, and array pitch is 700mm～900 mm, interior insertion Φ 18mm～Φ 22mm * length 2100mm～2300mm twisted steel anchor rod.
Described pallet be in 15 ° of pallets or 30 ° of pallets or the 45 ° of pallets wherein one or both.
The utility model compared with prior art has simple in structure, easy for installation, supporting intensity is firm, make roadway surrounding rock stress turn to the characteristics of deep rock mass, base plate excavation gas pressure relief slot moves end distension displacement in groove, base plate is done waterproofing work, make the water in the tunnel not infiltrate aluminium matter mud stone base plate as far as possible, the base angle anchor pole so that floor level stress reduce, but explosion emission levels stress at the bottom of the hole, increase wall-rock crack, strengthen slip casting effect.Anti-pulling of anchor bar is not less than 50 kN, and top anchor cable pretightning force is widely used in underground engineering construction greater than 100 kN.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is conventional butterfly pallet;
Fig. 3 is 45 ° of pallets;
Fig. 4 is 30 ° of pallets;
Fig. 5 is 15 ° of pallets;
Fig. 6 is tray seat;
The specific embodiment
Accompanying drawing is embodiment of the present utility model.
Below in conjunction with accompanying drawing summary of the invention is described in further detail:
With reference to Fig. 1～shown in Figure 6, the support system of-kind of improvement Soft Rock Roadway Floor Heave comprises a digging tunnel, the W steel band, anchor cable, anchor pole, butterfly pallet, pallet, gas pressure relief slot, pipe-seam type anchor rod, twisted steel anchor rod, described digging tunnel 1 is along by W steel band 22 the first anchor pole 23 being installed respectively from left to right on the top board of tunnel trend, the second anchor pole 25, the 3rd anchor pole 27, the 4th anchor pole 29, the 5th anchor pole 30, the 6th anchor pole 31, the 7th anchor pole 33, the 8th anchor pole 35 and the first anchor cable 24, the second anchor cable 26, the 3rd anchor cable 28, the 4th anchor cable 32, the 5th anchor cable 34 is connected with the coal seam, described digging tunnel 1 left wall is installed the 9th anchor pole 21 from top to bottom, the tenth anchor pole 20, the 11 anchor pole 19, the 12 anchor pole 18, right wall is installed the 14 anchor pole 2 from top to bottom, the 15 anchor pole 3, the 16 anchor pole 4, the 17 anchor pole 5, the afterbody of above-mentioned every anchor pole is connected with butterfly pallet 18-1 by nut, described butterfly pallet 18-1 is connected with tray seat (18-5), have gas pressure relief slot 11 in the middle of 1 base plate of described digging tunnel, gas pressure relief slot 11 interior laying quicklime bisques 12, described gas pressure relief slot 11 1 ends are connected with plain concrete 9 and quicklime bisque 10, described base plate left end or right-hand member have ditch 13, lay quicklime bisque 14 in the bottom in ditch 13, inclination pipe-seam type anchor rod 16 and interpolation one an inclination anchor pole 17 installed respectively in 1 base plate lower left corner, described digging tunnel and lower right corner, supporting plate 18-4 is installed in a described inclination anchor pole 17 ends, with another inclination pipe-seam type anchor rod 7 and another inclination anchor pole 6 of interpolation, described another inclination anchor pole 6 ends are installed supporting plate 18-4 and are connected with the coal seam.
A described pipe-seam type anchor rod 16 and another pipe-seam type anchor rod 7 connect as one with the coal seam.
Described anchor pole is twisted steel anchor rod.
The pipe-seam type anchor rod interpolation twisted steel anchor rod of described footing, injected water mud in the pipe.
Described footing bolt diameter is Φ 42mm～Φ 44mm pipe-seam type anchor rod, and length is 2000mm～3000mm, and array pitch is 700mm～900 mm, interior insertion Φ 18mm～Φ 22mm * length 2100mm～2300mm twisted steel anchor rod.
Described pallet be among 15 ° of pallet 18-4 or 30 ° of pallet 18-3 or the 45 ° of pallet 18-2 wherein one or both.
In sum, anti-pulling of anchor bar is not less than 50 kN, an array pitch 700 mm * 800 mm, the supporting of W steel band.
Two help anchor pole: select φ 18mm * 2100 mm twisted steel anchor rods, Q235 steel supporting plate, specification are 150 mm * 150 mm * 8 mm (long * wide * thick), and anti-pulling of anchor bar is not less than 50 kN, between array pitch 800 mm * 800 mm, truss φ 14mm * 1600 mm rectangular arrangement; φ 6-1000 * 2500 mm hang in back, section of side, grid is the wire lath of 100 * 100mm.
The top anchor cable is selected φ 15.24mm * 7 100 mm anchor cables, and pretightning force is greater than 100 kN, an array pitch 1800 * 1200 mm, and practice of construction is 2100 * 1200 mm, and " 2+1+2 " arranges, and the anchor cable joist is the 16# channel-section steel of long 600 mm.
Work progress
Spread the drystone ashes.Dig after the end finishes, uniform spreading one deck 50mm drystone ashes and compacting, so both closed bottom made base plate and airborne moisture isolated, can keep again roadway floor dry, end distension occured after preventing from disclosing aluminium matter mud stone.
The installation concrete steps of pipe-seam type anchor rod are:
1. measure hole depth, require to be not less than body of rod total length.
2. with rock slag and ponding in compressed air or the peace and quiet square of drag twist.
Be inserted in 15 ° of metal supporting plates 3. for first the pipe-seam type anchor rod body of rod, such as special circumstances, available common pallet replaces.Then body of rod cone end is inserted bolthole, the body of rod is inserted in the hole, put an amount of explosive at the bottom of the hole and carry out explosion at the bottom of the hole, not only can increase wall-rock crack, strengthen slip casting effect, can also the release portion horizontal stress also can strengthen the end anchorage power of pipe-seam type anchor rod; For increasing pipe-seam type anchor rod intensity, insert twisted steel anchor rod and cement injection in the centre.
Lay the 100mm underplate concrete and implement permanent support.The concrete on gas pressure relief slot both sides is built by 1 ° of gradient, after the shop fixtures concrete reaches pedestrian's intensity, can spray from inside to outside the 60mm concrete and cover side section's complement anchor pole and steel mesh reinforcement with sealing, makes laneway molding smooth.Lay belt by design after multiple spray is finished, carry out cure process, the roadway floor after the sclerosis must satisfy the design height requirement, and concrete strength is identical with ditch and shop fixtures.
Points for attention:
(1) strict with the designing requirement execution in the roadway construction process, guarantee that construction quality puts in place;
(2) will adhere to regular measuring point observation and daily supporting quality inspection, observation data is in time reported to seminar, in order to carry out Feedback Design;
(3) when digging end operation, when too much such as the base plate polywater, should stop operation immediately and in time take to draw water, waterproof measure, and report the developments to relevant department, after agreeing, the person in charge can continue operation.
Claims (3)
1.-kind administer the support system of Soft Rock Roadway Floor Heave, this support system comprises a digging tunnel, the W steel band, anchor cable, anchor pole, butterfly pallet, pallet, gas pressure relief slot, pipe-seam type anchor rod, twisted steel anchor rod, it is characterized in that described digging tunnel (1) is along by W steel band (22) the first anchor pole (23) being installed respectively from left to right on the top board of tunnel trend, the second anchor pole (25), the 3rd anchor pole (27), the 4th anchor pole (29), the 5th anchor pole (30), the 6th anchor pole (31), the 7th anchor pole (33), the 8th anchor pole (35) and the first anchor cable (24), the second anchor cable (26), the 3rd anchor cable (28), the 4th anchor cable (32), the 5th anchor cable (34) is connected with the coal seam, the left wall in described digging tunnel (1) is installed the 9th anchor pole (21) from top to bottom, the tenth anchor pole (20), the 11 anchor pole (19), the 12 anchor pole (18), right wall is installed the 14 anchor pole (2) from top to bottom, the 15 anchor pole (3), the 16 anchor pole (4), the 17 anchor pole (5), the afterbody of above-mentioned every anchor pole is connected with butterfly pallet (18-1) by nut, have gas pressure relief slot (11) in the middle of the base plate of described digging tunnel (1), lay quicklime bisque (12) in the gas pressure relief slot (11), described gas pressure relief slot (11) one ends are connected with plain concrete (9) and quicklime bisque (10), described base plate left end or right-hand member have ditch (13), lay quicklime bisque (14) in the bottom in ditch (13), an inclination pipe-seam type anchor rod (16) and interpolation one inclination anchor pole (17) are installed respectively in base plate lower left corner, described digging tunnel (1) and lower right corner, supporting plate (18-4) is installed in described inclination anchor pole (a 17) end, with another inclination pipe-seam type anchor rod (7) and another inclination anchor pole (6) of interpolation, described another inclination anchor pole (6) end is installed supporting plate (18-4) and is connected with the coal seam.
2. the support system of according to claim 1-kind of improvement Soft Rock Roadway Floor Heave is characterized in that described anchor pole is twisted steel anchor rod.
According to claim 1-kind administer the support system of Soft Rock Roadway Floor Heave, it is characterized in that described pallet be in 15 ° of pallets (18-4) or 30 ° of pallets (18-3) or the 45 ° of pallets (18-2) wherein one or both.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220356988 CN202851027U (en) | 2012-07-23 | 2012-07-23 | Support system treating soft rock roadway floor heaves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220356988 CN202851027U (en) | 2012-07-23 | 2012-07-23 | Support system treating soft rock roadway floor heaves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851027U true CN202851027U (en) | 2013-04-03 |
Family
ID=47982237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220356988 Expired - Fee Related CN202851027U (en) | 2012-07-23 | 2012-07-23 | Support system treating soft rock roadway floor heaves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851027U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557009A (en) * | 2013-11-15 | 2014-02-05 | 山东科技大学 | Row pile retaining and protecting method for preventing roadway floor heaving |
| CN104018847A (en) * | 2014-06-21 | 2014-09-03 | 西安科技大学 | Method for preventing extrusion flowing floor heave of rectangular roadway based on elastic foundation beam |
| CN106522983A (en) * | 2017-01-10 | 2017-03-22 | 山东科技大学 | Method for preventing and treating bottom heaving of strong-water-swelling soft rock roadway |
| CN107747491A (en) * | 2017-09-19 | 2018-03-02 | 肥城矿业集团单县能源有限责任公司 | Controlling device and administering method for Floor Heave in Roadway |
| CN108397218A (en) * | 2018-05-08 | 2018-08-14 | 西安科技大学 | Based on the bump coal mine rectangle crossheading composite support system for unloading strong branch theory by force |
| CN110617068A (en) * | 2019-09-23 | 2019-12-27 | 六盘水师范学院 | Design and construction method for coal mine stoping roadway |
| CN113605927A (en) * | 2021-09-03 | 2021-11-05 | 淮北市平远软岩支护工程技术有限公司 | Support method for soft rock roadway surrounding rock under high rock burst stress |
-
2012
- 2012-07-23 CN CN 201220356988 patent/CN202851027U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557009A (en) * | 2013-11-15 | 2014-02-05 | 山东科技大学 | Row pile retaining and protecting method for preventing roadway floor heaving |
| CN104018847A (en) * | 2014-06-21 | 2014-09-03 | 西安科技大学 | Method for preventing extrusion flowing floor heave of rectangular roadway based on elastic foundation beam |
| CN104018847B (en) * | 2014-06-21 | 2016-02-03 | 西安科技大学 | Based on distension prevention and controls at the bottom of the rectangular shaped roadways squeezing flow of beam on elastic foundation |
| CN106522983A (en) * | 2017-01-10 | 2017-03-22 | 山东科技大学 | Method for preventing and treating bottom heaving of strong-water-swelling soft rock roadway |
| CN107747491A (en) * | 2017-09-19 | 2018-03-02 | 肥城矿业集团单县能源有限责任公司 | Controlling device and administering method for Floor Heave in Roadway |
| CN108397218A (en) * | 2018-05-08 | 2018-08-14 | 西安科技大学 | Based on the bump coal mine rectangle crossheading composite support system for unloading strong branch theory by force |
| CN110617068A (en) * | 2019-09-23 | 2019-12-27 | 六盘水师范学院 | Design and construction method for coal mine stoping roadway |
| CN113605927A (en) * | 2021-09-03 | 2021-11-05 | 淮北市平远软岩支护工程技术有限公司 | Support method for soft rock roadway surrounding rock under high rock burst stress |
| CN113605927B (en) * | 2021-09-03 | 2022-07-12 | 淮北市平远软岩支护工程技术有限公司 | Support method for soft rock roadway surrounding rock under high rock burst stress |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202851027U (en) | Support system treating soft rock roadway floor heaves | |
| CN106285738B (en) | A kind of " steel reinforced concrete-hydraulic pressure " roadside support device and method for protecting support for deep tunnel | |
| CN108316941B (en) | Broken surrounding rock and soft rock roadway U-shaped steel canopy supporting method | |
| CN104047613B (en) | Baseboard of coal mine roadway anchoring process | |
| CN104074529B (en) | A kind of cave continuous bivalve, lane, deep reinforcement means | |
| CN105840207A (en) | Cross shallow buried bias pressure loose accumulation body large-span tunnel comprehensive entrance structure construction method | |
| CN202866826U (en) | Shield tunnel working well outer end socket stratum reinforced structure | |
| CN109083682A (en) | A kind of construction method of mine working antiseepage high intensity fire dam | |
| CN103603675A (en) | Supporting method of permeable soft broken rock stratum roadway | |
| CN204435404U (en) | The additional elevator foundation structure of a kind of old house | |
| CN105422128A (en) | Method for preventing goaf gas leakage in deep shaft gob-side entry driving | |
| CN104074534B (en) | A kind of combining adopts/the gob-side entry retaining method of fully mechanized coal face | |
| CN106351343A (en) | Basement outer wall waterproof protection structure capable of realizing synchronous crossing construction and construction method thereof | |
| CN205117376U (en) | A novel anchor bolt support structure for shallow unsymmetrial loading tunnel that buries | |
| CN101967983A (en) | Method for over-dredging, anchoring, backfilling and controlling deep well rock roadway floor heave | |
| CN205225280U (en) | A combined supporting structure that is used for steel -pipe pile bar planting tunnel composite lining of soft base | |
| CN205063967U (en) | Anti roadway support structure that combines that lets | |
| CN203229955U (en) | Foundation pit enclosure structure allowing supporting while excavating | |
| CN103147444A (en) | Foundation pit enclosure structure capable of realizing supporting while excavating and foundation pit excavating method | |
| CN110185061A (en) | A kind of assembled integral underground space retaining wall and construction method | |
| CN103790168A (en) | Application method of soil nailing wall in deep foundation pit supporting | |
| CN101691759A (en) | Construction method for digging composite environmental protection base of anchorage bar adding rock | |
| CN206668287U (en) | A kind of combined steel pipe concrete bow member for supporting | |
| CN206902734U (en) | A kind of earth construction of soft foundation zone | |
| CN105696620A (en) | Earth-retaining wall structure composed of waste tire-broken concrete, and construction method |
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: 20130403 Termination date: 20180723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |