CN105604557B - Shield-tunneling construction boulder detection method based on earthquake CT - Google Patents
Shield-tunneling construction boulder detection method based on earthquake CT Download PDFInfo
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- CN105604557B CN105604557B CN201511017131.1A CN201511017131A CN105604557B CN 105604557 B CN105604557 B CN 105604557B CN 201511017131 A CN201511017131 A CN 201511017131A CN 105604557 B CN105604557 B CN 105604557B
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- hole
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- 238000010276 construction Methods 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 title claims abstract description 12
- 238000005553 drilling Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 3
- 238000013170 computed tomography imaging Methods 0.000 abstract description 4
- 238000003384 imaging method Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000004880 explosion Methods 0.000 description 2
- 239000010438 granite Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Remote Sensing (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A kind of shield-tunneling construction boulder detection method based on earthquake CT, including：The first drilled tunnel group and the second drilled tunnel group are laid on cutter head of shield machine；In shield-tunneling construction tunnel, length identical launch hole and receiver hole are drilled through in front of cutter head of shield machine；Transmitter in excitation-emission hole, multipoint reception is carried out by several receivers in receiver hole, carries out earthquake CT imaging, gathered seismic waveform data and handle, draw velocity contour, boulder is judged whether from velocity contour.Step of the present invention is simple and convenient to operate, the progress earthquake CT imaging in front of shield machine, and the distance of transmitter and receiver is short, and mobile spacing is small, high resolution, can effectively detect the boulder in front of shield-tunneling construction；There may be borehole imaging at boulder in front of shield machine, it is with strong points, invalid construction is avoided, significantly reduces construction cost.
Description
Technical field
Present invention relates particularly to a kind of shield-tunneling construction boulder detection method based on earthquake CT.
Background technology
In coastal areas of southern China area, carry out in subway shield tunnel construction and be commonly encountered boulder, it is by the uneven wind of granite
Change the weathering core under remaining.Boulder may bring major safety risks, it is necessary to be verified before shield machine construction.Probing and physical prospecting
Method is to detect the important means of boulder, and two class methods are generally all carried out in earth's surface, by being drilled through in shield-tunneling construction tunnel upper
Multiple drillings, vertical development examination is carried out, determine position, the shapes and sizes of boulder, then carry out deep hole blasting.Take on ground
There are serious problems in table bore detecting boulder, do not require nothing more than that drilling hole amount is more, and easily by conditions such as building, pipelines
Limitation, using vertical drilling cost height, complex process in rivers, and it is difficult to be accurately positioned after finding boulder, it is final to influence
To demolition effect.
The content of the invention
The technical problem to be solved in the present invention, it is to provide a kind of shield-tunneling construction boulder detection method based on earthquake CT.
What the present invention was realized in：A kind of shield-tunneling construction boulder detection method based on earthquake CT, comprises the following steps：
(1) cloth hole on cutter head of shield machine：The first drilled tunnel group and the second drilled tunnel group are laid on cutter head of shield machine；
The first drilled tunnel group is located at the inside of the second drilled tunnel group, and it is logical that the first drilled tunnel group includes three first drillings
Road, and three first drilled tunnels are evenly distributed on using cutter head center as on the circle C1 in the center of circle；Second drilled tunnel
Group includes six the second drilled tunnels, and six second drilled tunnels are evenly distributed on the circle C2 using cutter head center as the center of circle
On；
(2) drilled in front of shield machine：In shield-tunneling construction tunnel, drilled by the first drilled tunnel on cutterhead and second
Passage, using sleeve pipe retaining wall, drill through 9 length identical exploration holes in front of cutter head of shield machine from the front to the back with advanced rig,
And the length of exploration hole is more than the spacing between the round C1 and circle C2；Exploration hole corresponding to first drilled tunnel is hair
Perforation, the exploration hole corresponding to the second drilled tunnel are receiver hole；
(3) earthquake CT is imaged：One transmitter is fixed on a first hollow metallic rod top, the first metallic rod top is stretched
Enter in a launch hole, and the afterbody of first metallic rod is inserted in the first drilled tunnel of cutterhead；By between a plurality of receivers
Every and be uniformly fixed in a second hollow metallic rod, the second metallic rod correspond to receiver part stretch into receiver hole,
And second the afterbody of metallic rod be inserted in the second drilled tunnel of cutterhead；The transmitter and receiver are by cable and one
Position machine connection；
Transmitter in excitation-emission hole, multipoint reception is carried out by a plurality of receivers in receiver hole；Wherein, 6 receptions
1 receivers is installed respectively simultaneously in hole, while carries out reception observation；Or reception observation is conducted batch-wise in 6 receiver holes；Complete
After once exciting, the complete situation of seismic waveform and preliminary wave take-off situation are checked from host computer；It is complete in a launch hole
Into after all transmittings, the first metallic rod and transmitter are moved on in another launch hole, continue to gather seismic waveform data, until complete
Gathered into the Wave data of all launch holes and receiver hole；The seismic waveform data gathered is handled, draws speed point
Butut, boulder is judged whether from velocity contour.
Further, the radius of the round C1 is 1~1.5m, and the distance between outward flange of the round C2 and cutterhead is
0.5m。
Further, the length of exploration hole is 20m, aperture 90mm.
Further, in the step (2), when drilling through exploration hole, must be had a down dip along the axis direction in shield-tunneling construction tunnel
5 °~10 °, and must be poured water in exploration hole and be full of water all the time.
The advantage of the invention is that：Step of the present invention is simple and convenient to operate, and earthquake CT imaging is carried out in front of shield machine,
The distance of transmitter and receiver is short, and mobile spacing is small, high resolution, can effectively detect the boulder in front of shield-tunneling construction；
There may be borehole imaging at boulder in front of shield machine, it is with strong points, invalid construction is avoided, significantly reduces construction cost.
Brief description of the drawings
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the construction process figure of the shield-tunneling construction boulder detection method of the invention based on earthquake CT.
Fig. 2 is the structural representation of cutter head of shield machine in the present invention.
Fig. 3 is the structural representation in shield-tunneling construction tunnel in the present invention..
Fig. 4 is transmitter and the cooperation figure of the first metallic rod in the present invention.
Fig. 5 is the cooperation figure that emitter and the second metallic rod are connect in the present invention.
Fig. 6 is the fundamental diagram of earthquake CT in the present invention.
Embodiment
Refer to shown in Fig. 1-3, a kind of shield-tunneling construction boulder detection method based on earthquake CT, comprise the following steps：
(1) cloth hole on cutter head of shield machine:The first drilled tunnel group 2 and the second drilled tunnel are laid on cutter head of shield machine 1
Group 3；The first drilled tunnel group 2 is located at the inside of the second drilled tunnel group 3, and the first drilled tunnel group 2 includes three the
One drilled tunnel 21, and three first drilled tunnels 21 are evenly distributed on using the center of cutterhead 1 as on the circle C1 in the center of circle；It is described
Second drilled tunnel group 3 includes six the second drilled tunnels 31, and six second drilled tunnels 31 are evenly distributed on knife
The center of disk 1 is on the circle C2 in the center of circle；The radius of the round C1 is 1~1.5m, between the outward flange of the round C2 and cutterhead 1 away from
It is 0.5m from d.
(2) drilled in front of shield machine：In shield-tunneling construction tunnel 12, pass through the first drilled tunnel 21 on cutterhead 1 and
Two drilled tunnels 31, using sleeve pipe (not shown) retaining wall, before cutter head of shield machine 1 with advanced rig (not shown) from the front to the back
Drill with ferrule takes 9 length identical exploration holes, and the length of exploration hole is more than the round C1 and circle C2 (the first drilled tunnel 21 and the
Pitch of holes between two drilled tunnels 31) between spacing；The length of the exploration hole is 20m, aperture 90mm.Wherein, bore
Axis directions of the Kong Shixu along shield-tunneling construction tunnel 12 has a down dip 5 °~10 ° (simply can not be drilled through along horizontal direction), and
It must be poured water into exploration hole, and ensure to be full of water in exploration hole all the time, so that earthquake wave energy effectively travels to instrument from hole wall,
Reduce decay；Exploration hole corresponding to first drilled tunnel 21 is launch hole 4, the detection corresponding to the second drilled tunnel 31
Hole is receiver hole 7；Using sleeve pipe retaining wall, hole quality can be effectively ensured, can both prevent borehole collapse, be also possible to prevent to occur
Hole clipping.
(3) earthquake CT is imaged：One transmitter 5 is fixed on a hollow top of the first metallic rod 6, the first metallic rod 6 is pushed up
End is stretched into a launch hole 4, and the afterbody of first metallic rod 6 is inserted in the first drilled tunnel 21 of cutterhead 1；Will be a plurality of
Receiver 8 is spaced and is uniformly fixed in a second hollow metallic rod 9, and the part that the second metallic rod 9 corresponds to receiver 8 is stretched
Enter in a receiver hole 7, and the afterbody of the second metallic rod 9 is inserted in the second drilled tunnel 31 of cutterhead 1；The transmitter 5 and connect
Receive device 8 to be connected with a host computer 11 by cable 10, cable 10 all should be hidden into the interior of the first metallic rod 6 and the second metallic rod 9
Portion, as illustrated in figures 4-5.
As shown in fig. 6, the transmitter 5 in launch hole 4 is excited, a plurality of receivers 8 in receiver hole 7 can carry out multiple spot
Receive；Wherein, simultaneously 1 receivers 8 can be installed respectively in 6 receiver holes 7, while carries out reception observation；Or by 6 receiver holes
7 are conducted batch-wise reception observation；After completion once excites, the complete situation of seismic waveform and preliminary wave are checked from host computer 11
Jump situation；After completing all transmittings in a launch hole 4, the first metallic rod 6 and transmitter 5 are moved on in another launch hole 4,
Continue to gather seismic waveform data, until completing the Wave data collection of all launch holes 4 and receiver hole 7；To the ground gathered
Seismic wave graphic data is handled, and excludes error, using when walking of first break picking ripple by the way of man-computer cooperation, storehouse when establishing, root
According to storehouse when walking of pickup, and the engineering geological data with reference to known to, analyze speed distribution situation, establish initial velocity model；Adopt
With bending ray tracing method, radiation profile figure is drawn, checks whether ray is correctly followed the trail of, analyzes the sparse situation of ray, drawn
Velocity contour, sign velocity anomaly area, boulder is judged whether from velocity contour.Because boulder belongs to granite inequality
Velocity of wave difference be present with periphery medium, be generally significantly higher than the ripple of surrounding medium in the weathering core of even weathering residual, boulder
Speed, it can be explained according to this velocity of wave difference with reference to known geology or engineering data, in the VELOCITY DISTRIBUTION that earthquake CT is drawn
Boulder is determined whether in figure.
(4) boulder explosion
If verifying in front of shield machine and boulder be present, explosion is carried out according to factors such as the position of boulder, shapes and sizes, it is ensured that
Shield machine safe construction.
Step of the present invention is simple and convenient to operate, and carries out earthquake CT imaging in front of shield machine, transmitter and receiver away from
From short, mobile spacing is small, high resolution, can effectively detect the boulder in front of shield-tunneling construction；There may be orphan in front of shield machine
Borehole imaging at stone, it is with strong points, invalid construction is avoided, significantly reduces construction cost.
Claims (3)
- A kind of 1. shield-tunneling construction boulder detection method based on earthquake CT, it is characterised in that：Comprise the following steps：(1) cloth hole on cutter head of shield machine：The first drilled tunnel group and the second drilled tunnel group are laid on cutter head of shield machine；It is described First drilled tunnel group is located at the inside of the second drilled tunnel group, and the first drilled tunnel group includes three the first drilled tunnels, And three first drilled tunnels are evenly distributed on using cutter head center as on the circle C1 in the center of circle；The second drilled tunnel group bag Six the second drilled tunnels are included, and six second drilled tunnels are evenly distributed on using cutter head center as on the circle C2 in the center of circle；(2) drilled in front of shield machine：It is logical by the first drilled tunnel on cutterhead and the second drilling in shield-tunneling construction tunnel Road, using sleeve pipe retaining wall, drill through 9 length identical exploration holes in front of cutter head of shield machine from the front to the back with advanced rig, and The length of exploration hole is more than the spacing between the round C1 and circle C2；Exploration hole corresponding to first drilled tunnel is transmitting Hole, the exploration hole corresponding to the second drilled tunnel are receiver hole；It in the step (2), when drilling through exploration hole, must have a down dip 5 °~10 °, and detect along the axis direction in shield-tunneling construction tunnel It must be poured water in hole and be full of water all the time；(3) earthquake CT is imaged：One transmitter is fixed on a first hollow metallic rod top, the first metallic rod top stretches into one In launch hole, and the afterbody of first metallic rod is inserted in the first drilled tunnel of cutterhead；By a plurality of receiver intervals and Uniformly it is fixed in a second hollow metallic rod, the part that the second metallic rod corresponds to receiver is stretched into receiver hole, and the The afterbody of two metallic rods is inserted in the second drilled tunnel of cutterhead；The transmitter and receiver pass through cable and a host computer Connection；Transmitter in excitation-emission hole, multipoint reception is carried out by a plurality of receivers in receiver hole；Wherein, in 6 receiver holes 1 receivers is installed respectively simultaneously, while carries out reception observation；Or reception observation is conducted batch-wise in 6 receiver holes；Complete once After exciting, the complete situation of seismic waveform and preliminary wave take-off situation are checked from host computer；Institute is completed in a launch hole After having transmitting, the first metallic rod and transmitter are moved on in another launch hole, continue to gather seismic waveform data, until completing institute There is the collection of the Wave data of launch hole and receiver hole；The seismic waveform data gathered is handled, draws velocity contour, Boulder is judged whether from velocity contour.
- 2. the shield-tunneling construction boulder detection method based on earthquake CT as claimed in claim 1, it is characterised in that：The round C1's Radius is 1~1.5m, and the distance between outward flange of the round C2 and cutterhead is 0.5m.
- 3. the shield-tunneling construction boulder detection method based on earthquake CT as claimed in claim 1, it is characterised in that：The length of exploration hole Spend for 20m, aperture 90mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017131.1A CN105604557B (en) | 2015-12-30 | 2015-12-30 | Shield-tunneling construction boulder detection method based on earthquake CT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017131.1A CN105604557B (en) | 2015-12-30 | 2015-12-30 | Shield-tunneling construction boulder detection method based on earthquake CT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105604557A CN105604557A (en) | 2016-05-25 |
| CN105604557B true CN105604557B (en) | 2018-03-23 |
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| CN201511017131.1A Expired - Fee Related CN105604557B (en) | 2015-12-30 | 2015-12-30 | Shield-tunneling construction boulder detection method based on earthquake CT |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401594B (en) * | 2016-07-26 | 2018-08-07 | 福建工程学院 | A kind of compound knife disc tool method for arranging of shield machine |
| CN106567713B (en) * | 2016-11-03 | 2018-05-18 | 上海隧道工程有限公司 | For the construction method and system of shield driving forward probe in marine bed |
| CN108415100A (en) * | 2018-03-01 | 2018-08-17 | 广州轨道交通建设监理有限公司 | A kind of high level of accuracy integrated exploration method for granite onion weathering body |
| CN109407144B (en) * | 2018-12-05 | 2020-02-18 | 中国矿业大学 | Multi-wave-based single-hole boulder three-dimensional detection method |
| CN110469334B (en) * | 2019-09-06 | 2020-10-02 | 广西大学 | Blasting system for blasting subway shield boulders and protruding rocks |
| CN111123351B (en) * | 2019-11-29 | 2022-03-15 | 中铁工程服务有限公司 | Advanced forecasting system and method for shield construction |
| CN117214957A (en) * | 2023-05-31 | 2023-12-12 | 珠海市轨道交通有限公司 | Boulder detection device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581789A (en) * | 2009-06-23 | 2009-11-18 | 刘盛东 | Mine working face inter-lane seismic wave CT detection method |
| JP5587960B2 (en) * | 2012-01-25 | 2014-09-10 | 株式会社安藤・間 | Tunnel elastic wave exploration method and tunnel elastic wave exploration system used therefor |
| CN202837558U (en) * | 2012-10-22 | 2013-03-27 | 南京大学 | Underground karst cave earthquake cross-hole CT (computer tomography) detection and tomographic imaging device |
| JP6304527B2 (en) * | 2013-11-06 | 2018-04-04 | 清水建設株式会社 | Tunnel rock exploration method |
| CN103790594B (en) * | 2014-02-26 | 2016-02-24 | 中铁一局集团有限公司 | A kind of shield construction detection and processing method in boulder hole, front |
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