CN107165678A - A kind of Blast Vibration Monitoring method of buried underground water supply pipelines - Google Patents
A kind of Blast Vibration Monitoring method of buried underground water supply pipelines Download PDFInfo
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- CN107165678A CN107165678A CN201710562432.5A CN201710562432A CN107165678A CN 107165678 A CN107165678 A CN 107165678A CN 201710562432 A CN201710562432 A CN 201710562432A CN 107165678 A CN107165678 A CN 107165678A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012544 monitoring process Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000005422 blasting Methods 0.000 claims abstract description 23
- 239000011435 rock Substances 0.000 claims abstract description 13
- 238000004880 explosion Methods 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims description 2
- 239000002360 explosive Substances 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000011076 safety test Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The present invention proposes a kind of Blast Vibration Monitoring method of buried underground water supply pipelines, comprises the following steps：Computer tube linear distance tunnel Bao Yuan centers apart from R1；L at the different distance of measuring distance tunnel tunnel face rear1、L2、L3The vibration velocity for locating country rock is V1、V2、V3；Calculate the quick-fried heart at the different distance of face rear away from；According to the country rock vibration velocity relation at pipeline vibration velocity and face rear different distance；According to V1、V2、V3Calculate 3 vibration velocity V at pipeline1 pipe、V2 pipes、V3 pipes；To 3 vibration velocity V at pipeline1 pipe、V2 pipes、V3 pipesAlgebraic mean value is sought, the vibration velocity value at pipeline is used as；According to the Explosive Vibrating Velocity value of pipeline, pipeline safety is evaluated, optimizes blast working scheme, instructs tunnel control explosion, it is ensured that pipeline safety.The present invention effectively solves this technical barrier of the Tunnel Blasting vibration monitoring of buried underground utilities, has far-reaching influence for constructing tunnel industry.
Description
Technical field
The present invention relates to technical field of tunnel construction, supervised more particularly, to a kind of blasting vibration of buried underground water supply pipelines
Survey method.
Background technology
In recent years, the Tunnel Engineering that underground water supply pipelines are worn under low coverage is more and more.When being excavated using drilling and blasting method, tunnel
Blasting vibration constitutes safely serious threat to underground water supply pipelines closely, and blasting vibration is easy to cause pipeline to damage,
Even ftracture, cause immeasurable economic loss.
(2013) are saved in Li Jun《Underground utilities safeguard measure is worn under Metro gateway and analysis is calculated》In, calculate and divide
Influence of the concussion of blasting to pipeline is not considered in analysis, blast monitoring method is not proposed yet；And in beam forward (2009)《Underground utilities
Blasting vibration safety test with monitoring》With《Middle Line Project For Transferring Water From South To North Beijing-to-Shijiazhuang section blasting vibration Study on Safety Problem》In, it is proposed that
The ground surface monitoring method of shallow embedding (5m) underground utilities：First, by having laid 4 groups of sensors at earth's surface, underground 5,10,19m,
Every group is buried level to (excavating axis perpendicular to pipeline) and vertical to two sensors, as shown in figure 1, test explosion earthquake
Explosive Vibrating Velocity in ripple, research rock mass at different depth, show that earth's surface vibration velocity value is significantly greater tnan the vibration velocity value at the 5m of underground, two
Person differs 2~3 times；Then, by being surveyed to ground vibration velocity, 5 sights are arranged altogether from quick-fried source to natural gas line direction
Measuring point, minimum distance 36.1m, maximum distance 226.2m (pipeline location), measuring point spacing about presses logarithm equidistantly distributed, draws
Propagation attenuation rule of the attenuation of seismic waves along ground, Charge control is released with this, blast working is instructed.As shown in figure 1, being existing
Have in technology along depth direction sensor arrangement figure, its subject matter and weak point that exist：First, pipeline 5m located underground
Left and right, belongs to the pipeline for comparing shallow embedding, and the Blast Vibration Monitoring problem of deep-buried pipeline is not related to；Secondly, on the other hand pass through
The vibration velocity at different depth in rock mass is tested, show that earth's surface vibration velocity value is significantly greater tnan the vibration velocity value at the 5m of underground, the conclusion is simultaneously
Without generality；Again, by carrying out the attenuation law that actual measurement draws attenuation of seismic waves to ground vibration velocity, do not have to obtain outlet pipe
Explosive Vibrating Velocity at line, the blasting vibration safety of pipeline is controlled with this, and this control is very inaccurate, also relatively dangerous.
For buried (buried depth >=20m) underground water supply pipelines apart from the relatively near (distance≤2D in tunnel it can be seen from more than
(D is tunnel span)) in the case of, there is presently no corresponding Blast Vibration Monitoring method.Existing Blast Vibration Monitoring side
Method is mainly for Shallow-Embedded Under-Ground pipeline, by testing ground blasting vibration velocity, carrys out the blasting vibration safety of indirect control shallow embedding pipeline.
For deep-buried pipeline monitoring problem, due to deep-buried pipeline apart from ground farther out, it is and nearer apart from tunnel, ground vibration velocity with pipeline
Vibration velocity is differed greatly, and in the method for ground vibration velocity control pipeline vibration velocity, for buried underground utilities, then significant discomfort is used.It is another
Existing method, by setting the blasting vibration at deep hole direct measurement pipeline bottom position, party's hair implements very difficult, performance
：One is not allow to set deep hole in many cases；Two be to enable punching, and the installation of sensor is also very difficult, it is difficult to
Ensure the precision installed, implement very difficult.
Therefore, the present invention is directed to the Blast Vibration Monitoring method of buried underground water supply pipelines, because buried depth is big, if still adopted
It is monitored, then will be differed greatly with the actual blasting vibration of pipeline, it is impossible to ensure Tunnel Blasting on ground with above method
Vibrate the safety of underground pipelines, it would be highly desirable to propose a kind of new monitoring method.
The content of the invention
The present invention proposes a kind of Blast Vibration Monitoring method of buried underground water supply pipelines, effectively solves buried underground
This technical barrier of the Tunnel Blasting vibration monitoring of pipeline, has far-reaching influence for constructing tunnel industry.
The technical proposal of the invention is realized in this way：A kind of Blast Vibration Monitoring method of buried underground water supply pipelines,
Comprise the following steps：
S1, computer tube linear distance tunnel Bao Yuan centers apart from R1；The half for taking tunnel height is quick-fried heart point, then
L at S2, measuring distance tunnel tunnel face rear different distance1、L2、L3The vibration velocity for locating country rock is V1、V2、V3；
The quick-fried heart at S3, calculating face rear different distance is away from calculation formula is：
S4, according to the country rock vibration velocity relation at pipeline vibration velocity and face rear different distance,
(α, β, γ are the coefficients related to geological conditions), according to V1、V2、V3
Calculate 3 vibration velocity V at pipeline1 pipe、V2 pipes、V3 pipes；
S5, to 3 vibration velocity V at pipeline1 pipe、V2 pipes、V3 pipesAlgebraic mean value is sought, the vibration velocity value at pipeline is used as；
S6, by vibration velocity V at the pipeline of acquisitionPipeIt is compared with the control standard of pipeline blasting vibration safety, evaluates pipeline
Security situation, optimize blast working scheme, instruct tunnel control explosion, it is ensured that pipeline safety.
As a kind of perferred technical scheme, the specific method of testings of step S2 are that measurement respectively obtains tunnel span D, ground
Down tube linear diameter d, tunnel water supply line distance from top ground H1, tunnel water supply line distance from bottom tunnel vault H2, then in tunnel
Road explosion face rear country rock side wall cloth puts 3 measuring points, is N respectively1、N2、N3, arrange three-dimensional velocity sensor, measuring point distance
Tunnel bottom is h1, test and obtain L at different distance1、L2、L3It is V to locate country rock vibration velocity1、V2、V3。
Above-mentioned technical proposal is employed, beneficial effects of the present invention are：The monitoring method of the present invention is simple and easy to apply, Ke Yi
Tunnel Blasting face rear directly tests, it is to avoid set the difficulty of deep hole test, it also avoid in ground test can not
Reflect the disadvantage of vibration velocity at deep-buried pipeline, the Explosive Vibrating Velocity at accurate pipeline can be obtained by solving algebraic mean value
Data, can directly make an appraisal to the vibration safety of pipeline, instruct blast working.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is in the prior art along depth direction sensor arrangement figure；
Fig. 2 is the side view of Tunnel Blasting vibration-testing of the present invention；
Fig. 3 is the front elevation of Tunnel Blasting vibration-testing of the present invention；
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in Figures 2 and 3,
Implementation steps：
(1) tunnel uses full-face blast, it is assumed that tunnel axis is parallel with pipeline axis, pipeline distance from bottom Tunnel Blasting
Vertical distance=the H in face center2+H0/ 2=10+10/2=15m, horizontal range is L0=5m, then according to formulaCalculate R1=15.81m.
(2) assume that certain separate explosion obtains face rear country rock apart from L1=10m, L2=15, L3Vibration velocity is measured at=20m
Respectively V1=1.5cm/s, V2=1.2cm/s, V3=0.8cm/s.
(3) span D=16m known to, h1=1m, face rear is apart from the quick-fried source L in tunnel1=10m, L2=15, L3=20m
The quick-fried heart away from respectively RAfter 1=13.42m, RAfter 2=17.46m, RAfter 3=21.91m；Calculation formula is：
(4)(α, β, γ are the coefficients related to geological conditions), according to
V1、V2、V3Calculate 3 vibration velocity V at pipeline1 pipe=4.5cm/s, V2 pipes=4.8cm/s, V3 pipes=4.0cm/s.
(5) to 3 vibration velocity V at pipeline1 pipe、V2 pipes、V3 pipesAlgebraic mean value is sought, the vibration velocity value at pipeline is used as；Pipeline vibration velocity average value is calculated for VPipe=4.43cm/s.
By vibration velocity V at the pipeline of acquisitionPipeIt is compared with the control standard of pipeline blasting vibration safety, evaluates the peace of pipeline
Full situation, optimizes blast working scheme, instructs tunnel control explosion, it is ensured that pipeline safety.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (2)
1. a kind of Blast Vibration Monitoring method of buried underground water supply pipelines, it is characterised in that comprise the following steps：
S1, computer tube linear distance tunnel Bao Yuan centers apart from R1；The half for taking tunnel height is quick-fried heart point, then
L at S2, measuring distance tunnel tunnel face rear different distance1、L2、L3The vibration velocity for locating country rock is V1、V2、V3；
The quick-fried heart at S3, calculating face rear different distance is away from calculation formula is：
S4, according to the country rock vibration velocity relation at pipeline vibration velocity and face rear different distance,
(α, β, γ are the coefficients related to geological conditions), according to V1、V2、V3
Calculate 3 vibration velocity V at pipeline1 pipe、V2 pipes、V3 pipes；
S5, to 3 vibration velocity V at pipeline1 pipe、V2 pipes、V3 pipesAlgebraic mean value is sought, the vibration velocity value at pipeline is used as；
S6, by vibration velocity V at the pipeline of acquisitionPipeIt is compared with the control standard of pipeline blasting vibration safety, evaluates the peace of pipeline
Full situation, optimizes blast working scheme, instructs tunnel control explosion, it is ensured that pipeline safety.
2. a kind of Blast Vibration Monitoring method of buried underground water supply pipelines as claimed in claim 1, it is characterised in that step
The specific method of testings of S2 are that measurement respectively obtains tunnel span D, underground utilities diameter d, tunnel water supply line distance from top ground
H1, tunnel water supply line distance from bottom tunnel vault H2, then in Tunnel Blasting face rear country rock side, wall cloth puts 3 measuring points,
It is N respectively1、N2、N3, three-dimensional velocity sensor is arranged, measuring point is h apart from tunnel bottom1, test and obtain L at different distance1、L2、
L3It is V to locate country rock vibration velocity1、V2、V3。
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489601A (en) * | 2018-03-28 | 2018-09-04 | 青岛理工大学 | A kind of tunnel low coverage passes through the Blast Vibration Monitoring and control method of underground utilities |
| CN109342757A (en) * | 2017-11-02 | 2019-02-15 | 西南交通大学 | A kind of automatic acquisition device and method of tunnel piercing drilling depth |
| CN111307836A (en) * | 2019-12-10 | 2020-06-19 | 西南石油大学 | PE pipe performance testing device under seismic wave load |
| CN115371791A (en) * | 2022-07-19 | 2022-11-22 | 青岛理工大学 | Underground pipeline vibration velocity measuring method and system |
| WO2023202074A1 (en) * | 2022-04-21 | 2023-10-26 | 东北大学 | Asymmetric high-stress tunnel blasting vibration test method and system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342757A (en) * | 2017-11-02 | 2019-02-15 | 西南交通大学 | A kind of automatic acquisition device and method of tunnel piercing drilling depth |
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| CN111307836B (en) * | 2019-12-10 | 2022-04-15 | 西南石油大学 | PE pipe performance testing device under seismic wave load |
| WO2023202074A1 (en) * | 2022-04-21 | 2023-10-26 | 东北大学 | Asymmetric high-stress tunnel blasting vibration test method and system |
| US11982596B2 (en) | 2022-04-21 | 2024-05-14 | Northeastern University | Method and system for blast-induced vibration monitoring of tunnels in high asymmetric in-situ stresses |
| CN115371791A (en) * | 2022-07-19 | 2022-11-22 | 青岛理工大学 | Underground pipeline vibration velocity measuring method and system |
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