CN110471119A - Based on aeroelectromagnetic method railway tunnel three-dimensional line-selection method - Google Patents
Based on aeroelectromagnetic method railway tunnel three-dimensional line-selection method Download PDFInfo
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- CN110471119A CN110471119A CN201910619455.4A CN201910619455A CN110471119A CN 110471119 A CN110471119 A CN 110471119A CN 201910619455 A CN201910619455 A CN 201910619455A CN 110471119 A CN110471119 A CN 110471119A
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
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- G01V3/165—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device
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Abstract
Based on aeroelectromagnetic method railway tunnel three-dimensional line-selection method, effectively to optimize to railway tunnel position, pass through tunnel integrally in relatively complete rock mass.Include the following steps: to extract default tunnel resistor rate plan view according to the absolute altitude of default tunnel；In aeroelectromagnetic method resistivity three-dimensional data width range, resistivity value relatively high value section is called in the whole preceding tunnel planar line position that will adjust, and forms tunnel planar line position after adjustment；Default tunnel resistor rate longitudinal direction cross-section diagram before the formation of adjustment preceding tunnel vertical line position adjusts is extracted according to adjustment preceding tunnel planar line position, is extracted according to planar line position in tunnel after adjustment and presets tunnel resistor rate longitudinal direction cross-section diagram after tunnel vertical line position formation adjustment after adjusting；Resistivity value high level segment length L is passed through in statistical adjustment preceding tunnel vertical line position1Resistivity value high level segment length L is passed through with vertical line position in tunnel after adjustment2If L2> L1, then tunnel vertical line position after tunnel planar line position, adjustment after the adjustment is determined as to the optimal routing in default tunnel.
Description
Technical field
The present invention relates to railway tunnel selection methods, in particular to a kind of to be based on aeroelectromagnetic method railway tunnel three-dimensional line-selection
Method.
Background technique
Currently, physical prospecting 2-D data is mainly fitted to three-dimensional data by studies in China, three-dimensional geological attribute is constructed, and apply
In looking for mine and engineering field.Hydraulic and hydroelectric engineering industry corrects three-dimensional geological model in conjunction with a large amount of two-dimentional state properties, is based on
Geological structure spread arranges a large amount of crosswise joint physical prospecting sections, and physical prospecting interpretation position of fault in cross section is reacted to geological model
In, form infrastructure three-dimensional configuration.
Railway tunnel work often according to physical prospecting along the arrangement of both alignment positions, forms tunnel profile two dimension physical prospecting achievement,
Subterranean body physical difference along reflection.It is certain based on suitability geophysical prospecting method arrangement at present only in complex geologic conditions paragraph
The lateral survey line of spacing is formed local segment and is landed lower complicated geological form three using the two-dimensional imaging section of software fitting inverting
Three-dimensional physical prospecting achievement is tieed up, is only capable of to provide foundation by the Tunnel Design scheme and working measure of special geobody section.It is reconnoitring
Design phase, usual tunnel plan-position can be according to the adjustment of front and back lead engineering or being distributed with for tunnel's entrance and exit unfavorable geology
It is changed, Tunnel figure is caused to lack survey data support, physical prospecting achievement utilization rate is low or even complete along the tunnel having been carried out
It cannot utilize entirely.To obtain the three-dimensional physical prospecting achievement of tunnel area by conventional physical prospecting, need along the vertical arrangement in position it is intensive
Lateral physical prospecting forms three-dimensional achievement by 3-d inversion, but based on more ridge section landform limitation of growing up, scheme is substantially infeasible.
Currently, mountain terrain is still to be formed based on physical prospecting operation along set line position progress along track profile physical prospecting
Achievement, local geology complexity paragraph are equally faced tunnel and are worn no physical prospecting using lateral physical prospecting control, the adjustment of support part line position
The relatively poor problem of data paragraph engineering geological condition, and the not up to mesh based on the tunnel entirety route selection of physical prospecting three-dimensional achievement
's.
For the route selection for over mountain line tunnel of growing up, it is necessary first to three-dimensional physical prospecting solid interpretation achievement with high accuracy is formed, it is conventional
Ground physical prospecting be only capable of being arranged in the tunnel top that manpower can reach, and obtain intensive laterally two-dimentional state properties just along needing
3 D stereo can be formed, entire tunnel area implementation is substantially infeasible, and the program really can not move towards alignment for route macroscopic view and provide
Decision.
And aeroelectromagnetic method can obtain the joint inversion resistivity three-dimensional achievement of entire tunnel area one fixed width range, it can be real
Realization is grown up more ridge railway tunnel integral macroscopic route selection, can effectively be solved based on aeroelectromagnetic method railway tunnel three-dimensional line-selection method
It certainly grows up over mountain line tunnel alignment problem.
Summary of the invention
Technical problem to be solved by the invention is to provide one kind to be based on aeroelectromagnetic method railway tunnel three-dimensional line-selection method,
To realize railway tunnel three-dimensional line-selection, effectively railway tunnel position is optimized, keeps tunnel whole in relatively complete rock mass
In pass through.
The technical solution adopted by the present invention to solve the technical problems is as follows:
The present invention is based on aeroelectromagnetic method railway tunnel three-dimensional line-selection methods, include the following steps:
1. being based on aeroelectromagnetic method resistivity three-dimensional data, it is flat to extract default tunnel resistor rate according to the absolute altitude of default tunnel
Face figure；
2. whole in aeroelectromagnetic method resistivity three-dimensional data width range based on default tunnel resistor rate plan view
Preceding tunnel planar line position will be adjusted and call in resistivity value relatively high value section, form tunnel planar line position after adjustment；
3. extracting default tunnel resistor before the formation of adjustment preceding tunnel vertical line position adjusts according to adjustment preceding tunnel planar line position
Rate longitudinal direction cross-section diagram is extracted after tunnel vertical line position after adjusting forms adjustment according to planar line position in tunnel after adjustment and presets tunnel electricity
Resistance rate longitudinal direction cross-section diagram；
4. passing through resistivity based on tunnel resistor rate longitudinal direction cross-section diagram statistical adjustment preceding tunnel vertical line position default before adjustment
It is worth high level segment length L1, electricity is passed through based on tunnel vertical line position after presetting tunnel resistor rate longitudinal direction cross-section diagram statistical adjustment after adjustment
Values of resistivity high level segment length L2If L2> L1, then tunnel vertical line position after tunnel planar line position, adjustment after the adjustment is determined as
The optimal routing in default tunnel passes through default tunnel integrally in relatively complete rock mass.
The beneficial effects are mainly reflected as follows following aspects:
One, conventional ground physical prospecting is difficult to form three-dimensional achievement, can not achieve railway tunnel solid route selection, and base of the present invention
In aeroelectromagnetic method railway tunnel three-dimensional line-selection method, railway tunnel entirety route selection can be quickly and effectively carried out, prospecting number is made up
According to the deficiency of shortage, it is ensured that tunnel surrounding effectively optimizes tunnel surrounding condition, throws in relatively complete rock mass
Money and construction period；
Two, plane adjustment in tunnel, which will lead to ground state properties, to efficiently use, but airborne geophysical prospecting is then in route two sides
Data are covered in larger range, still can effectively be used.Sichuan-Tibet railway grow up over mountain line tunnel plane adjustment it is often more, relocate
Section ground physical prospecting availability data is few can not even to be utilized, and need to arrange Geophysical Work along adjustment line position again, using the present invention
Route selection cost can be greatly lowered based on aeroelectromagnetic method railway tunnel three-dimensional line-selection method and save the prospecting duration；
Three, the present invention is provides scientific basis based on aeroelectromagnetic method railway tunnel three-dimensional line-selection, it is ensured that reconnoitres pole
The difficult over mountain line tunnel of growing up in end passes through from country rock with respect to intact position, realizes the economy and rationally of engineering most possibly
Property.
Detailed description of the invention
This specification includes following seven width attached drawing:
Fig. 1 is the resistivity elevation in default tunnel；
Fig. 2 is default tunnel resistor rate plan view B-B；
Fig. 3 is default tunnel resistor rate longitudinal direction cross-section diagram D-D before adjustment；
Fig. 4 is default tunnel resistor rate longitudinal direction cross-section diagram E-E after adjustment；
Fig. 5 is that embodiment presets tunnel resistor rate plan view B-B；
Fig. 6 is default tunnel resistor rate longitudinal direction cross-section diagram D-D before embodiment adjustment；
Fig. 7 is default tunnel resistor rate longitudinal direction cross-section diagram E-E after embodiment adjustment.
Default tunnel 1, resistivity value 2, aeroelectromagnetic method resistivity three-dimensional data width 3, absolute altitude 4, tunnel mileage 5 are adjusted
Whole preceding tunnel planar line position 6, tunnel planar line position 7, adjustment preceding tunnel vertical line position 8, vertical line position in tunnel after adjustment after adjustment
9。
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
The present invention is based on aeroelectromagnetic method railway tunnel three-dimensional line-selection methods, include the following steps:
1. referring to Fig.1, being based on aeroelectromagnetic method resistivity three-dimensional data, default tunnel is extracted according to the absolute altitude 4 of default tunnel 1
Road resistivity plan view B-B；
2. referring to Fig. 2, based on default tunnel resistor rate plan view B-B, in aeroelectromagnetic method resistivity three-dimensional data width 3
In range, 2 relatively high value section of resistivity value is called in the whole preceding tunnel planar line position 6 that will adjust, and forms tunnel planar line after adjustment
Position 7；
3. being extracted according to adjustment preceding tunnel planar line position 6 pre- before adjusting the formation adjustment of preceding tunnel vertical line position 8 referring to Fig. 3
If tunnel resistor rate longitudinal direction cross-section diagram D-D.Referring to Fig. 4, tunnel vertical line after adjusting is extracted according to tunnel planar line position 7 after adjustment
Tunnel resistor rate longitudinal direction cross-section diagram E-E is preset after forming adjustment in position 9；
4. vertical based on the tunnel resistor rate longitudinal direction preceding tunnel of cross-section diagram D-D statistical adjustment default before adjustment referring to Fig. 3 and Fig. 4
2 high level segment length L of resistivity value is passed through to line position 81, adjusted based on cross-section diagram E-E statistics in tunnel resistor rate longitudinal direction is preset after adjustment
2 high level segment length L of resistivity value is passed through in tunnel vertical line position 9 after whole2If L2> L1, then by tunnel planar line position 7 after the adjustment
It is determined as the optimal routing in default tunnel 1 with tunnel vertical line position 9 after adjustment, keeps default tunnel 1 whole in relatively complete rock
It is passed through in body.
It is difficult to form three-dimensional achievement the present invention overcomes conventional ground physical prospecting and can not achieve railway tunnel solid route selection
Deficiency can quickly and effectively carry out railway tunnel entirety route selection based on aeroelectromagnetic method resistivity three-dimensional data, make up prospecting number
According to the deficiency of shortage, it is ensured that tunnel surrounding effectively optimizes tunnel surrounding condition, throws in relatively complete rock mass
Money and construction period.It makes full use of airborne geophysical prospecting then to cover data in the larger range of route two sides, route selection can be greatly lowered
Cost and saving prospecting duration.The present invention is provides scientific basis based on aeroelectromagnetic method railway tunnel three-dimensional line-selection, it is ensured that
The exceedingly difficult over mountain line tunnel of growing up of prospecting passes through from country rock with respect to intact position, realizes the economy of engineering most possibly
Property and reasonability.
Embodiment: Sichuan-Tibet railway moral reaches tunnel three-dimensional line-selection
Moral is about 33Km up to tunnel, across Sichuan Province Litang County and Batang County, high mountain gorge is passed through behind the basin of plateau, most
High aititude 5117m, maximum height difference 1450m belong to typical high altitudes and cold area.Tunnel area tomography intensively interlocks, lithology is various,
Layer contact unconformity, geological structure, formation lithology are extremely complex.Areal geology data deficiencies, and conventional survey is difficult to carry out, and is obtained
The geological information taken cannot provide strong support for tunnel location.
Find out fault tectonic, stratigraphic boundary and lithology.Since natural environment limits, ground routine physical prospecting, geology survey, brill
The performance difficulties such as spy, basic data lack, and contactless surveying method is significant.For this purpose, using aviation transient electromagnetic method and
Aviation natural field electro-magnetical method exploration engineering arranges that 11 surveys line, width 2100m ultimately form aeroelectromagnetic method resistivity along the line
Three-dimensional data provides abundant support for tunnel location.
By aeroelectromagnetic method resistivity three-dimensional data can any direction extract resistivity profile, resistivity distribution can reflect
The contact of varying strength rock mass and construction boundary line.
Tunnel three-dimensional line-selection is reached based on aeroelectromagnetic method Sichuan-Tibet railway moral, is carried out as follows:
1. referring to Fig.1, being based on aeroelectromagnetic method resistivity three-dimensional data, default tunnel is extracted according to the absolute altitude 4 of default tunnel 1
Road resistivity plan view B-B；
2. referring to Fig. 5, based on default tunnel resistor rate plan view B-B, in aeroelectromagnetic method resistivity three-dimensional data width 3
In range, 2 relatively high value section of resistivity value is called in the whole preceding tunnel planar line position 6 that will adjust, and forms tunnel planar line after adjustment
Position 7；
3. being extracted according to adjustment preceding tunnel planar line position 6 pre- before adjusting the formation adjustment of preceding tunnel vertical line position 8 referring to Fig. 6
If tunnel resistor rate longitudinal direction cross-section diagram D-D.Referring to Fig. 7, tunnel vertical line after adjusting is extracted according to tunnel planar line position 7 after adjustment
Tunnel resistor rate longitudinal direction cross-section diagram E-E is preset after forming adjustment in position 9；
4. referring to figure 6 and figure 7, measuring complete granite average resistivity 2 in conjunction with interior is 3.3e3Ω .m, setting should
Value is high level.Resistance is passed through based on tunnel resistor rate longitudinal direction cross-section diagram D-D statistical adjustment preceding tunnel vertical line position 8 default before adjustment
2 high level segment length L of rate value1, based on tunnel vertical line position after tunnel resistor rate longitudinal direction cross-section diagram E-E statistical adjustment default after adjustment
9 pass through 2 high level segment length L of resistivity value2。
It is counted according to Fig. 6, adjusts preceding tunnel vertical line position 8 and pass through 2 high level segment length L of resistivity value1Data are as follows: resistance
Rate 3.3e3The above bout length 6173m of Ω .m.
It is counted according to Fig. 7,2 high level segment length L of resistivity value is passed through in tunnel vertical line position 9 after adjustment2Data are as follows: resistance
Rate 3.3e3The above bout length 10964m of Ω .m.
It analyzes by contrast, it is bright by high resistivity paragraph relatively to adjust preceding tunnel vertical line position 8 for tunnel vertical line position 9 after adjustment
Aobvious length, tunnel surrounding intensity and integrated degree global advantage are obvious after adjustment.It therefore, can be by tunnel planar line position after the adjustment
7 are determined as the optimal routing in default tunnel 1 with tunnel vertical line position 9 after adjustment.It, will the present invention is based on aeroelectromagnetic methods according to measuring and calculating
Railway tunnel three-dimensional line-selection method applies to Sichuan-Tibet railway moral up to tunnel route selection, and saving physical prospecting, route selection cost are more than ten million remaining yuan,
And significantly save prospecting duration and optimization constructing tunnel surrounding rock supporting cost.
Claims (1)
1. being based on aeroelectromagnetic method railway tunnel three-dimensional line-selection method, include the following steps:
1. being based on aeroelectromagnetic method resistivity three-dimensional data, default tunnel resistor rate is extracted according to the absolute altitude (4) of default tunnel (1)
Plan view (B-B)；
2. based on default tunnel resistor rate plan view (B-B), in aeroelectromagnetic method resistivity three-dimensional data width (3) range,
Entirety will adjust preceding tunnel planar line position (6) and call in resistivity value (2) relatively high value section, form tunnel planar line position after adjustment
(7)；
3. extracting default tunnel electricity before adjustment preceding tunnel vertical line position (8) formation adjusts according to adjustment preceding tunnel planar line position (6)
Resistance rate longitudinal direction cross-section diagram (D-D), tunnel vertical line position (9) forms tune after extracting adjustment according to tunnel planar line position (7) after adjustment
Default tunnel resistor rate longitudinal direction cross-section diagram (E-E) after whole；
4. passing through electricity based on tunnel resistor rate longitudinal direction cross-section diagram (D-D) statistical adjustment preceding tunnel vertical line position (8) default before adjustment
Values of resistivity (2) high level segment length L1, vertical based on tunnel after presetting tunnel resistor rate longitudinal direction cross-section diagram (E-E) statistical adjustment after adjustment
Resistivity value (2) high level segment length L is passed through to line position (9)2If L2> L1, then by tunnel planar line position (7) after the adjustment and tune
Tunnel vertical line position (9) is determined as the optimal routing of default tunnel (1) after whole, keeps default tunnel (1) whole relatively complete
It is passed through in rock mass.
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Cited By (2)
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| CN111913226A (en) * | 2020-06-28 | 2020-11-10 | 中铁第一勘察设计院集团有限公司 | Railway tunnel extremely-high ground stress identification method based on aviation geophysical prospecting three-dimensional inversion result |
| CN114509822A (en) * | 2022-01-20 | 2022-05-17 | 中铁二院工程集团有限责任公司 | Ground-air electromagnetic array surveying method for railway tunnel and survey line arrangement method thereof |
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