CN100567698C - Tunnel advanced support air circulated drilling construction method and drilling tool - Google Patents
Tunnel advanced support air circulated drilling construction method and drilling tool Download PDFInfo
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- CN100567698C CN100567698C CNB2008103012611A CN200810301261A CN100567698C CN 100567698 C CN100567698 C CN 100567698C CN B2008103012611 A CNB2008103012611 A CN B2008103012611A CN 200810301261 A CN200810301261 A CN 200810301261A CN 100567698 C CN100567698 C CN 100567698C
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Abstract
A kind of tunnel advanced support air circulated drilling construction method, construction sequence is as follows: drilling tool is installed earlier, then drilling tool is moved on to the designation hole position along track, adjust the azimuth of drilling tool according to the tunnel rhumb line, make drilling tool parallel with the tunnel rhumb line, rig and frame is fastening.Then open air compressor, blast is controlled at more than the 0.4MPa, opens rig then, drilling rod is at the uniform velocity crept into to the soil body, compressed air is delivered to the drill bit position through the drilling pipe inner chamber, air-cooled drill bit, and drilling cuttings blown out outside the boring by the slot between the drilling pipe and the soil body.At drill bit internal the guiding drilling apparatus can be installed.Last whole hole slip casting, Grouting Pipe are to drilling pipe inner chamber pressure injection cement paste, and cement paste carries out filling and pressure injection to drilling pipe inner chamber and the outer annular gap of drilling pipe, change next position, hole construction again over to.Solved in soil layer particularly safety in the construction of the new loess of Quaternary system area pipe shed support, the problem of creeping into fast, can avoid taking place cubic metre of earth subsiding, prevented potential safety hazard.
Description
Affiliated technical field
The present invention relates to advanced support method in a kind of construction of tunnel, particularly a kind of job practices of pipe canopy.
Background technology
The pipe canopy is that the underground space is built pre-supporting method commonly used in the construction.Be before excavation, the nearly horizontal steel pipe of one row squeezed into wait to excavate the space above and slip casting, forms a canopy shape protection structure, be used for protection to excavate work safety and carry out.Pipe roof construction has boring method, pipe jacking method and rammer pipe method.Can be divided into percussion drilling and circle round according to the mode of broken ground and creep into.Percussion drilling generally is used for than hard formation such as various rock and sand cobble stratum, is to come broken formation with the compressed air-driven down-the-hole air hammer.The boring method that circles round is with horizontal drill steel pipe to be installed in the stratum, is circled round by drilling pipe driving drill bit by rig and cuts the stratum, must cool off with flushing liquor in the drilling process, lubricates drill bit and take drilling cuttings out of.Flushing liquor is mud again, is added the configuration of material such as swell soil by water and forms.
Yet, in the new loess of China's Quaternary system area, the stratigraphic structure of tunnel construction mainly is to be made of new loess, because gunk-squeeze process is less in the soil, under the situation of moisture content less, be easy to cracked loosely, in collapsible loess during construction pipe canopy, as use traditional drilling method that circles round, flushing liquor causes the deliquescing of stratum immersion on every side easily, cause natural structure to destroy, produce the safety problem that soil layer subsides, and boring direction is also restive.Therefore carrying out the advance support construction in this soil layer is a technical barrier of being badly in need of solution.
Summary of the invention
The invention provides a kind of tunnel advanced support air circulated drilling construction method; the problem of solve in the pipe shed support construction of the new loess of Quaternary system area safety, creeping into fast, and solve protection tunnel surrounding soil, avoid subsiding, preventing to produce the technical problem of potential safety hazard.
The technical solution adopted for the present invention to solve the technical problems is:
This tunnel advanced support air circulated drilling construction method is characterized in that construction sequence is as follows:
Another technical scheme:
In the above-mentioned steps 1, at the anterior connection of drill bit guide strip, drill bit internal is installed the guiding probe, and in the drill bit inwall, the guiding probe is connected with the guiding drilling apparatus with the display screen of outside by holding wire the guiding probe by support fixation.Drilling pipe is foremost within 2 meters scopes outside the tunnel excavation line behind the whole hole.The first primary dip that creeps into that guiding is crept into is 0.1 to 5 degree.The guiding probe rear connects wire rope 22, obtain relevant creep into and the drilling tool parameter after, the guiding probe can be dragged and draw taking-up.
After the above-mentioned steps 4, whenever set and finish a drilling pipe scene must in time lead data record and drilling tool front end length and add the length of tube detail record at every turn, whenever set and finish 20 meters, use probe rear light, carry out once left and right sides deviational survey with transit, when spending greater than 0.3 as deviation, correction in time.
In the above-mentioned steps 4, adopt tracking grouting, slip casting immediately after the pipe canopy has set, grouting pressure is greater than 0.6Mpa, and frame is by the walking hydraulic oil cylinder driving.
This tunnel advanced support air circulation drilling construction drilling tool comprises rig and the frame that supports rig, it is characterized in that:
Frame is positioned on the track of work plane, track is vertical with the chapelet face and vertical with tunnel axis to be laid, be supported horizontally inside on the rig balladeur train on the frame as the drilling pipe of pipe boron steel pipe, the front end of drilling pipe is connected with the drill bit that head has air outlet, the rear end of drilling pipe is driven with rig rotary motive power head by screw thread and is connected, rig rotary motive power head is connected with the propulsive mechanism of rig, and the inner chamber of drilling pipe, rig is communicated with airduct, and airduct is terminal to be communicated with the bellows chamber of air compressor.
Above-mentioned frame can comprise chassis, crossbeam and column, connects brace and girt between two columns, is connected the lifting cucurbit on the column with between the crossbeam.
Above-mentioned drill bit front portion can be connected with guide strip, and drill bit internal is equipped with the guiding probe, and the guiding probe is connected with the guiding drilling apparatus with the display screen of outside by holding wire.
This method bit cutting soil body, creeping into different with circling round in the past is without flushing liquor, and replaces compressed air, and the compressed air of compressor output is delivered to drill bit by drilling pipe, be used to cool off drill bit, and drilling cuttings is blown out outside the boring in the slot between the soil body by drilling pipe.When constructing, can join the guide instrument guiding and creep into, to guarantee construction precision than the long tube canopy.With the broken soil layer of the method dry type of anhydrous pneumatic air drilling, carry out the pipe shed support construction, can guarantee that the tunnel surrounding soil is unaffected.Borings can blow out boring with compressed air.
The present invention can adopt pneumatic guiding to advance job practices and carry out pipe roof construction with pipe bit, is about to manage the boron steel pipe and is processed into drilling pipe, utilizes the horizontally-guided rig will manage the drilling pipe merogenesis that the boron steel pipe is processed into and pierces.The pressure-air that utilizes air compressor to produce when piercing blows out boring mud outside the hole, utilizes the precision that sets of wired guiding instrument control drilling pipe.
The invention has the beneficial effects as follows:
(1), adopt anhydrous operation can avoid big disturbance is caused on the stratum assurance construction safety.
(2), utilizing guiding to advance technology with pipe bit can control in real time and set precision, guarantee construction precision.
(3), overlap joint in the middle of disposable long distance sets and can avoid.
(4), air inlet in the pipe, pipe is outer gives vent to anger, and can guarantee that long distance sets and can bit freezing.
(5), in pipe roof construction, replace drilling pipe, front end adds drill bit and directly pierces the stratum, realizes advancing construction with pipe bit with pipe boron steel pipe.
The present invention can adapt to the new loess of the Northwest's Quaternary system area geological condition, is applicable to the construction needs with new loess area, the Northwest tunneltron canopy.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of drilling tool of the present invention.
Fig. 2 is the structural representation of drill bit.
Reference numeral: 1-track, 2-chassis, 3-crossbeam, 4-column, 5-bellows chamber, 6-airduct, 7-rig rotary motive power head, 8-rig balladeur train, 9-drilling pipe, 10-drill bit, 11-promote cucurbit, 12-brace, 13-girt, 14-air outlet, 15-guide strip, 16-guiding probe, 17-support, 18-holding wire, 19-work plane, 20-chapelet face, the propulsive mechanism of 21-rig, 22-wire rope.
(5) specific embodiment
Embodiment one is referring to shown in Figure 1, and the construction sequence of this tunnel advanced support air circulated drilling construction method is as follows:
Inner chamber is communicated with airduct 6, and airduct is terminal to be communicated with the bellows chamber 5 of air compressor.
Measure at last and creep into the inclination angle, set and in time to sum up after finishing, calculate mean obliquity (the tunnel gradient should be taken into account), creep into just for next position, hole construction that primary dip provides reference frame.If deviation is nonconforming, extract and beat the pipe canopy, inject mixed serum, treat to beat again after the slurry consolidation.
Embodiment two is referring to shown in Figure 2, and the job practices of this tunnel advanced support air circulated drilling construction method is that drill bit also is connected with the guiding drilling apparatus with the difference of embodiment one, and its construction sequence is as follows:
Whenever set and finish a drilling pipe scene must in time lead data record and drilling tool front end length and add the length of tube detail record at every turn, set 20 meters, use probe rear light, carry out once left and right sides deviational survey with transit, when spending greater than 0.3 as deviation, correction in time.
Adopt tracking grouting, slip casting immediately after the pipe canopy has set, grouting pressure is greater than 0.6Mpa, and frame is by the walking hydraulic oil cylinder driving.
A kind of tunnel advanced support air circulation drilling construction drilling tool comprises rig and the frame that supports rig, it is characterized in that:
Frame is positioned on the track 1 of work plane 19, track and chapelet face 20 vertical and vertical layings with tunnel axis, be supported horizontally inside on the rig balladeur train 8 on the frame as the drilling pipe 9 of pipe boron steel pipe, the front end of drilling pipe is connected with the drill bit 10 that head has air outlet, the rear end of drilling pipe is driven with rig rotary motive power head 7 by screw thread and is connected, rig rotary motive power head 7 is connected with the propulsive mechanism 21 of rig, the inner chamber of drilling pipe, rig is communicated with airduct 6, airduct is terminal to be communicated with available air compressor more than 8 cubes with the bellows chamber 5 of air compressor.
Above-mentioned frame comprises connection brace 12 and girt 13 between chassis 2, crossbeam 3 and column 4, two columns, is connected lifting cucurbit 11 on the column with between the crossbeam.
Drilling tool embodiment two: above-mentioned drill bit front portion is connected with guide strip, guide strip makes progress and littlely inclines, the inclination angle is 10 to 20 degree, drill bit internal is equipped with the guiding probe, the guiding probe is connected with the guiding drilling apparatus with the display screen of outside by holding wire, the guiding probe rear connects wire rope 22, be used for obtain relevant creep into and the drilling tool parameter after, the guiding probe can be dragged and draw taking-up.
This method can be joined the drill bit of different shapes such as wedge shape, trapezoidal, taper, rig and air compressor can suitably dispose according to diameter of steel tube and pipe canopy length, rig rotary motive power head is connected with the propulsive mechanism of rig, the general available horizontal hydraulic pressure rig more than 5 tons of rig.
Claims (9)
1. tunnel advanced support air circulated drilling construction method is characterized in that construction sequence is as follows:
Step 1, drilling tool is installed, work plane (19) leveling that chapelet face (20) is preceding, track (1) is vertical and vertical with tunnel axis with chapelet face (20) to be laid, on track (1), set up frame, to be supported horizontally inside as the drilling pipe (9) of pipe boron steel pipe on the rig balladeur train (8) on the frame, the front end of drilling pipe is connected with the drill bit (10) that head has air outlet, the rear end of drilling pipe is driven with rig rotary motive power head (7) by screw thread and is connected, rig rotary motive power head (7) is connected with the propulsive mechanism (21) of rig, drilling pipe, the inner chamber of rig is communicated with airduct (6), and airduct is terminal to be communicated with the bellows chamber (5) of air compressor;
Step 2 moves on to the designation hole position with drilling tool along track (1), and the azimuth according to tunnel rhumb line adjustment drilling tool makes drilling tool parallel with the tunnel rhumb line, and rig and frame is fastening;
Step 3 is opened air compressor, and blast is controlled at more than the 0.4Mpa, open rig then, drilling rod is crept into to the soil body, compressed air is delivered to the drill bit position from bellows chamber, airduct through the drilling pipe inner chamber, air-cooled drill bit, and drilling cuttings blown out outside the boring by the slot between the drilling pipe and the soil body;
Step 4, whole hole slip casting, after single hole sets acceptance(check), the drilling pipe rear end is separated sealing drilling pipe rear end with rig, and at drilling pipe rear end installation Grouting Pipe and stack, the Grouting Pipe of drilling pipe rear end is communicated with the slip casting sebific duct, seals the aperture, Grouting Pipe is to drilling pipe inner chamber pressure injection cement paste, cement paste carries out mud jacking to the drilling pipe inner chamber with by the annular gap of air outlet outside drilling pipe at drill bit position, changes next position, hole construction again over to.
2. tunnel advanced support air circulated drilling construction method according to claim 1 is characterized in that: in the above-mentioned steps 3, the first primary dip of rod boring is 1 to 6 degree.
3. tunnel advanced support air circulated drilling construction method according to claim 1, it is characterized in that: in the above-mentioned steps 1, at the anterior guide strip (15) that connects of drill bit, drill bit internal is installed guiding probe (16), in the drill bit inwall, guiding probe (16) is connected with the guiding drilling apparatus with the display screen of outside by holding wire the guiding probe by support fixation.
4. tunnel advanced support air circulated drilling construction method according to claim 3 is characterized in that: in the above-mentioned steps 3, drilling pipe is foremost within 2 meters scopes outside the tunnel excavation line behind the whole hole.
5. tunnel advanced support air circulated drilling construction method according to claim 3 is characterized in that: above-mentioned guiding probe rear connects wire rope (22), obtain relevant creep into and the drilling tool parameter after, the probe that will lead is dragged and is drawn taking-up.
6. according to claim 1 or 3 described tunnel advanced support air circulated drilling construction methods, it is characterized in that: after the above-mentioned steps 4, whenever set and finish a drilling pipe, data record and drilling tool front end length and add the length of tube detail record must in time lead at every turn at the scene, whenever set and finish 20 meters, use probe rear light, carry out once left and right sides deviational survey with transit, when spending greater than 0.3 as deviation, correction in time.
7. according to claim 1 or 3 described tunnel advanced support air circulated drilling construction methods, it is characterized in that: in the above-mentioned steps 4, adopt tracking grouting, slip casting immediately after the pipe canopy has set, grouting pressure is greater than 0.6Mpa, and frame is by the walking hydraulic oil cylinder driving.
8. a tunnel advanced support air circulation drilling construction drilling tool comprises rig and the frame that supports rig, it is characterized in that:
Frame is positioned on the track (1) of work plane (19), track is vertical and vertical with tunnel axis with chapelet face (20) to be laid, be supported horizontally inside on the rig balladeur train (8) on the frame as the drilling pipe (9) of pipe boron steel pipe, the front end of drilling pipe is connected with the drill bit (10) that head has air outlet, the rear end of drilling pipe is driven with rig rotary motive power head (7) by screw thread and is connected, rig rotary motive power head (7) is connected with the propulsive mechanism (21) of rig, the inner chamber of drilling pipe, rig is communicated with airduct (6), and airduct is terminal to be communicated with the bellows chamber (5) of air compressor;
Above-mentioned frame comprises chassis (2), crossbeam (3) and column (4), connects brace (12) and girt (13) between two columns, is connected lifting cucurbit (11) on the column with between the crossbeam.
9. tunnel advanced support air circulation drilling construction drilling tool according to claim 8, it is characterized in that: above-mentioned drill bit front portion is connected with guide strip, and drill bit internal is equipped with the guiding probe, and the guiding probe is connected with the guiding drilling apparatus with the display screen of outside by holding wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008103012611A CN100567698C (en) | 2008-04-23 | 2008-04-23 | Tunnel advanced support air circulated drilling construction method and drilling tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008103012611A CN100567698C (en) | 2008-04-23 | 2008-04-23 | Tunnel advanced support air circulated drilling construction method and drilling tool |
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| CN101260784A CN101260784A (en) | 2008-09-10 |
| CN100567698C true CN100567698C (en) | 2009-12-09 |
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| CN101691842B (en) * | 2009-07-15 | 2014-05-14 | 中铁隧道股份有限公司 | Three-arm hydraulic wagon drill and tunnel drilling and grouting construction method |
| CN102183240B (en) * | 2011-03-14 | 2012-12-05 | 同济大学 | Inclination detection auxiliary device for pipe roof construction |
| CN103510851A (en) * | 2012-06-15 | 2014-01-15 | 湖北江南专用特种汽车有限公司 | Movable horizontal drill machine |
| CN103233487A (en) * | 2013-04-27 | 2013-08-07 | 杨众 | Method for grouting and floor lifting by directional drilling machine |
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| CN107421816A (en) * | 2017-08-10 | 2017-12-01 | 北京林业大学 | A kind of stratum splitting drag Rapid measuring and its assay method |
| CN108825134A (en) * | 2018-07-27 | 2018-11-16 | 深圳市市政设计研究院有限公司 | A kind of drill bit guidance system and arc large scale piperoof construction method |
| CN109723454A (en) * | 2019-01-09 | 2019-05-07 | 中水电四局武汉轨道交通工程有限公司 | A kind of bored tunnel advance support is with pipe canopy with the accurate drilling construction method of pipe |
| CN110000749B (en) * | 2019-05-07 | 2023-09-05 | 云南电网有限责任公司昆明供电局 | Tunnel inspection robot walking track support hanger and installation method thereof |
| CN111133865B (en) * | 2019-12-28 | 2020-11-27 | 郑州宏拓电子技术有限公司 | Square hardened ground digging and transplanting device |
| CN111827879B (en) * | 2020-07-03 | 2022-04-08 | 北京中煤矿山工程有限公司 | Horizontal drilling construction method for large-diameter pipe shed in shallow-earth-covered weak stratum |
| CN112696207A (en) * | 2020-12-21 | 2021-04-23 | 中铁十局集团第七工程有限公司 | Construction method of overlong large pipe shed of shallow-buried bias-pressure underground excavation tunnel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4474252A (en) * | 1983-05-24 | 1984-10-02 | Thompson Farish R | Method and apparatus for drilling generally horizontal bores |
| US4694913A (en) * | 1986-05-16 | 1987-09-22 | Gas Research Institute | Guided earth boring tool |
-
2008
- 2008-04-23 CN CNB2008103012611A patent/CN100567698C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4474252A (en) * | 1983-05-24 | 1984-10-02 | Thompson Farish R | Method and apparatus for drilling generally horizontal bores |
| US4694913A (en) * | 1986-05-16 | 1987-09-22 | Gas Research Institute | Guided earth boring tool |
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Denomination of invention: Tunnel advanced support air circulated drilling construction method and drilling tool Effective date of registration: 20100624 Granted publication date: 20091209 Pledgee: Zhongguancun Beijing science and technology Company limited by guarantee Pledgor: BEIJING SHOUER ENGINEERING TECHNOLOGY Co.,Ltd. Registration number: 2010990000793 |
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Denomination of invention: Tunnel advanced support air circulated drilling construction method and drilling tool Effective date of registration: 20120817 Granted publication date: 20091209 Pledgee: Bank of Communications Ltd. Beijing Zhongguancun Park sub branch Pledgor: BEIJING SHOUER ENGINEERING TECHNOLOGY Co.,Ltd. Registration number: 2012990000450 |
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