CN107167112B - A kind of device and method suitable for linear type canal axes positioning measurement - Google Patents
A kind of device and method suitable for linear type canal axes positioning measurement Download PDFInfo
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- CN107167112B CN107167112B CN201710374749.6A CN201710374749A CN107167112B CN 107167112 B CN107167112 B CN 107167112B CN 201710374749 A CN201710374749 A CN 201710374749A CN 107167112 B CN107167112 B CN 107167112B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A kind of device and method suitable for linear type canal axes positioning measurement, predominantly method, the central axes control point of linear type tunnel is laid by using total station, by laser leveler by Special connecting device be erected at can centering leveling measurement tripod on, by instrument precise alignment on axial line control point, it is compared by measuring instrument height or with reserved elevational point, the sight for calculating instrument is high, it is absolutely accurately positioned to realize the three-dimensional of laser leveler, the visible height datum line of two high-precisions and axial reference line can be provided for tunnel face construction site, facilitate construction personnel's field lofting.The equipment that this method uses is cheap, easy to operate but precision is high and applied widely, when setting-out with other processes can cross-operation, significantly improve work efficiency.
Description
Technical field
The present invention relates to tunnel excavation field, especially a kind of device suitable for linear type canal axes positioning measurement and
Method.
Background technique
In the surveying and locating method of linear type tunnel drilling and blasting method excavation construction it is current there are mainly two types of, one is total station by
The accurate setting-out of point, is suitable for large cross section excavation；Another is total station cooperation laser orientation instrument, and it is disconnected to be suitable for minor radius circle
It excavates in face.Most frequent measurement operation is face setting-out when subterranean tunnel excavation construction, and the core of face setting-out is to guarantee
It is upper under the premise of measure axis is correct to survey the brill blast hole position for setting tunnel excavation cross section, both ensured that the accurate perforation of tunnel was protected again
The accurate of excavated section size is demonstrate,proved, does not backbreak do not owe to dig within the allowable range.Therefore in tunnel excavation, surveying and locating work is non-
It is often important, it is usually all using high precision total station accurately point-by-point setting-out.
Measurement directly occupies the straight line duration as one of working procedure, and measuring technique personnel and construction personnel are often because of nothing
Method seamless connection and generate some contradictions.Because needing to get rid of the danger to environmental requirement height when measurement operation, dedusting, ventilation, illumination etc.
Under the conditions of accurate operation, therefore often will appear survey crew and construction personnel waited to complete a upper procedure or construction personnel
Etc. operation to be measured, especially excavation face periphery drill point-by-point setting-out consumption time it is long, it is inefficient.Scene is made simultaneously
Industry is that survey crew and cooperation personnel requirement are more, high to the competency profiling of measuring instrument and survey crew.
In later some linear type minor radius circular cross section inrush during tunnelings, there is laser orientation instrument, in face
Mounting bracket on the tunnel axis nearby excavated, laser orientation instrument is set up on bracket, is accurately adjusted by total station
The direction of the launch of laser, it is ensured that laser beam is directed toward the axis of tunnel, and construction personnel is according to the laser axis point for projecting to face
Borehole standardization is carried out, survey crew is accurately adjusted again after 2 ~ 3 circulations.The advantages of this method is not need each circulation
It is required that survey crew scene measures setting-out, the work efficiency improved, but the disadvantage is that laser orientation instrument is fixedly mounted on face
Near, influenced by blast working it is very big, often by explosion when slungshot hit and be damaged, furthermore mounting bracket is anchored at out
Dig top or the waist of tunnel, usually there is displacement deformation in the convergent deformation influence for country rock of experiencing certainly, essence in this way
It spends and is often difficult to guarantee, need survey crew often to carry out adjustment, repeatedly mounting bracket, and only one laser point, scene go out
Mistake is difficult to find and corrects.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of devices suitable for linear type canal axes positioning measurement
And method, can Fast Calibration design axis centre point, excavated section profile point and design bore blast hole position, avoid by explosion shadow
It rings.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
One kind being suitable for linear type canal axes positioning measuring device, including laser leveler, laser leveler pass through company
Connection mechanism is connect with tripod centering；The bindiny mechanism includes hollow stem, and hollow stem includes upper interconnecting piece and lower interconnecting piece,
In, be respectively equipped with external screw thread and internal screw thread on upper interconnecting piece and lower interconnecting piece, external screw thread and internal screw thread respectively with laser leveler
Centering threaded hole, tripod screw rod match；To point and tunnel central axes under the visible laser of the laser leveler
Control point is overlapped.
The bracket of the tripod is retractable structure.
The tripod is equipped with convertible wheel carrier, and convertible wheel carrier includes fold-type bar, the inflection point and tripod of fold-type bar
Hingedly, longer section of bottom end of fold-type bar be equipped with universal rolling wheel, compared with short section be equipped with handle, longer section of fold-type bar it is vertical when, three
Foot prop is liftoff and longer section of fold-type bar passes through cutting ferrule clamping.
Longer section of fold-type bar is formed by connecting by upper and lower thread bush and middle screw rasp bar
The outer diameter of the upper interconnecting piece external thread rod and the internal diameter of lower interconnecting piece internal thread hole are 16mm.
The laser leveler model EK-268GJ.
A method of suitable for linear type canal axes positioning measurement, comprising the following steps:
It sets tunnel central axes Step 1: surveying and demarcates: total station survey being taken to set linear type tunnel central axes and mark at the scene
Determine tunnel central axes control point；
Step 2: accurate set up, three-dimensional absolute fix laser leveler: by laser leveler by bindiny mechanism and commonly
Measurement tripod is fixed, and to point under the visible laser by finely tuning mobile laser leveler, laser leveler is erected at tunnel
On the control point of central axes, then the two-dimensional plane coordinate at laser leveler center has been fixed；Measuring instrument is high again, can accurately calculate
The sight of laser leveler is high, to realize the three-dimensional absolute fix of laser leveler.
Canal axes and height datum line are surveyed Step 3: throwing: the two high precision reference lines emitted using laser leveler,
Throwing measures two and is mutually perpendicular to visible laser line at the construction field (site), by accurately adjusting, it is ensured that vertical reference line and other calibration
Central axes control point be overlapped, can assert that vertical reference is canal axes, the absolute elevation of horizontal datum is laser level
The sight of instrument is high.
Step 4: tunnel setting-out: according to design element, calculating and demarcate face axis centre point or hole blasting design hole
Position.According to the design parameter of tunnel longitudinal slope and cross-sectional design parameter is excavated, extremely using hand-held stadia surveying instrument when necessary
The distance of face, successively calculates the difference for being intended to setting-out point and reference line, and field measurement is simultaneously demarcated.
Step 5: enhance process inspection and review: for the first time when setting-out, needing the area using high precision total station to setting-out
Facial contour point and characteristic point carry out live review；Meanwhile permanent axis point can be laid, in two sides at the top of tunnel with total station
Stringcourse section point and elevational point are laid, laser leveler is facilitated to carry out inspection review in measurement process, reduces error probability.
Total station carries out primary review, while lower single order of deploying to ensure effective monitoring and control of illegal activities comprehensively in the step 5 after boring quick-fried circulation every 3 ~ 4
The axial line control point of section.
Tunnel setting-out in the step 4 includes that linear type without the tunnel setting-out of gradient, linear type has the tunnel of gradient to put
Sample, wherein tunnel setting-out of the linear type without gradient is simultaneously demarcated according to the difference for being intended to setting-out point and reference line, field measurement, can
Realize the specific location of speedy lofting face axis centre point, design profile point or hole blasting design hole location；Linear type has gradient
Tunnel setting-out according to the difference of center of circle elevation and live given level reference line, field measurement and can demarcate, work thereafter
As tunnel setting out method of the linear type without gradient.
Tunnel setting-out of the linear type without gradient includes the excavated section of the shape of a hoof or gateway opening type, which removes
It demarcates outside the center of circle, it is also necessary to demarcate some specific profile points.
It is of the invention a kind of suitable for linear type canal axes positioning measuring device and method, it has following technical effect that
1), the application lays the central axes of linear type tunnel by using total station and embedded axial line control solid point is calibrated
Will, using under laser to point by instrument precise alignment on axial line control point, by measuring instrument it is high or with reserved elevational point ratio
Right, the horizontal line of sight for calculating instrument is high, is overlapped by accurately adjusting vertical line with central axes, can be face construction site
The visible height datum line of two high-precisions and axial reference line are provided, construction personnel's field calibration is facilitated to design axis centre
Blast hole position is bored in point, excavated section profile point and design.
Compared with the point-by-point setting-out of total station: total station heavy workload, operating speed are slow, seriously affect construction speed, only suitable
Big cross section operation is closed, and labor and time needed for the application are few more many than total station is used alone, and operation is simpler, quickly
It is convenient, nor affect on precision；
Compared with total station cooperates laser orientation instrument: the higher laser leveler of precision is used, it can be in the work with face
Industry distance is greater than the outer operation of 50m, avoids when explosion and the operation distance of face is greater than 50m, while from country rock convergent deformation
Influence, be not necessarily to adjustment instrument and frequent Embedment and installation bracket, precision is high, and then improves efficiency.In addition laser leveler has
Two reference lines, can be checked, and measurement accuracy can be effectively ensured.
2), instrument and equipment is cheap, easy to operate, and site operation personnel can be operated by simple training, without measuring skill
Art personnel participate in, it can be achieved that with other processes cross-operation, seamless interfacing saves time of measuring.
3), being measured using the device is not influenced by explosion and other processes, and instrument can set up immediately, instant folding and unfolding,
Ensure safety.And this method precision is high, scene checks that condition is more, and error probability is low, applied widely.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is the schematic diagram of invention.
Fig. 2 is the schematic diagram of bindiny mechanism in invention.
Fig. 3 is longer section of partial schematic diagram of fold-type bar in invention.
Fig. 4 is invention working state schematic representation.
Fig. 5 is the excavated section full-size drawing of the shape of a hoof or gateway opening type in invention.
In figure: laser leveler 1, bindiny mechanism 2, tripod 3, hollow stem 4, upper interconnecting piece 4-1, lower interconnecting piece 4-2, outside
Screw thread 4-3, internal screw thread 4-4, universal rolling wheel 5, swing handle 6, cutting ferrule 7, fold-type bar 8, control point 9, horizontal datum 10, tunnel
Axial reference line 11, drilling design point 12, circular end face design the center of circle 13.
Specific embodiment
As shown in Figure 1-3, a kind of be suitable for linear type canal axes positioning measuring device, including laser leveler 1, laser
1 model EK-268GJ of level meter, when the operation distance with face is greater than 50m, maximum eccentric difference is less than ± 10mm,
Relative accuracy meets the requirement of general civil construction setting-out.In this way, can avoid the receipts by slungshot shock or country rock in explosion
Holding back deformation influences.The laser leveler 1 is connect by bindiny mechanism 2 with 3 centering of tripod.During the bindiny mechanism 2 includes
Empty bar 4, hollow stem 4 are a long 50mm, hollow copper cylindrical bar.Hollow stem 4 includes upper interconnecting piece 4-1 and lower interconnecting piece 4-2.
The one end upper interconnecting piece 4-1 is connect with laser leveler bottom centering threaded hole, rod end outer diameter (diameter) 16mm, and inner hollow diameter is (straight
Diameter) it is 8mm, the upper mating thread external screw thread 4-3 of interconnecting piece 4-1, external screw thread 4-3 long 12mm.Lower interconnecting piece 4-2 and common survey three
The screw rod of foot prop connects, and is designed as hollow sleeve mode, socket end outer diameter 26mm, internal diameter 16mm, long 20mm, spiral shell in hollow thread
Line 4-4, internal screw thread 4-4 long 15mm, the convenient screw rod (pressure pair of construction survey field standard with common survey tripod center
Middle link bolt hole diameter is generally 16mm) connection.The bracket of tripod 3 is retractable structure, and retractable structure is by more branch
Bar is socketed to form, and is connected with ball, the limit hole connection of ball and adjacent struts by spring in every strut.The mechanism and rain
The flexible principle of umbrella support rod is consistent.
Due to needing will to be located at ground to point and the control point 9(of tunnel central axes under the visible laser of the laser leveler 1
Face) it is overlapped, therefore, it is necessary to tripod 3 is carried out suitably mobile progress coarse adjustment.It is more flexible in order to make to adjust, in three foot
Frame 3 is equipped with convertible wheel carrier, rolling can be used in this way to move, bring labor intensity is moved in reduction.Convertible wheel carrier packet
Fold-type bar 8 is included, the inflection point and tripod 3 of fold-type bar 8 are hinged, and longer section of bottom end of fold-type bar 8 is equipped with universal rolling wheel 5, compared with short section
Be equipped with handle 6, longer section of fold-type bar 8 it is vertical when, tripod 3 is liftoff and longer section of fold-type bar 8 passes through 7 clamping of cutting ferrule.
When needed, swing handle 6, make longer section of fold-type bar 8 it is vertical and be caught in elastic ferrule 7, universal rolling wheel 5 lands,
And tripod 3 is liftoff.Laser leveler 1 can be arbitrarily moved in this way, to carry out quickly and effectively multimetering and check, very
It is convenient.After being moved to designated position, the brake block for adjusting universal wheel locks universal wheel.Longer section of fold-type bar 8 is by upper and lower
Thread bush and middle screw rasp bar are formed by connecting.Therefore turn threaded rod, keeps universal wheel liftoff and tripod 3 lands, then is surveyed
Measure work.
A method of suitable for linear type canal axes positioning measurement, comprising the following steps:
It sets tunnel central axes Step 1: surveying and demarcates: total station survey being taken to set linear type tunnel central axes and mark at the scene
Determine tunnel central axes control point.Generally by the every interval 5m or 10m of code requirement, with stake axial line control in integer pile No. field survey
Point drills in construction bottom plate and buries measurement mark, uses convenient for long-term preservation, can also survey at the top of tunnel and set some axis
Point, is anchored using steel bar end, paints reflectorised paint, carries out axis check convenient for laser leveler.
Step 2: accurate set up, three-dimensional absolute fix laser leveler: because of the conventional use pattern of laser leveler
It is all any erection, relative positioning.It is needed in this method by laser leveler absolute fix, it is therefore desirable to which using accurately to flatten
The tripod of centering is fixed laser leveler and common survey tripod using the Special connecting device of design, passes through fine tuning
To point under the visible laser of mobile laser leveler, laser leveler is erected on the control point (X, Y) of tunnel central axes, axis
The general X of line coordinates system is pile No., Y be partially in distance, Y=0 on axis is constructed on axis during actual job sometimes and is blocked
Or when interference, it may also deviate from certain distance.Then the two-dimentional axis coordinate (X, Y) at laser leveler center has been fixed；Measurement instrument again
Device is high, can accurately calculate the sight height (H) of laser leveler, can also be by measuring the reserved vertical control point in scene and level
The difference of reference line is checked or is checked, so that the three-dimensional for realizing laser leveler is absolutely accurately positioned (X, Y, H).Sometimes
It needs to go up and down tripod, allows the horizontal reference of laser leveler to be adjusted to integer height value or specific height value, facilitate live meter
It calculates.
Canal axes and height datum line are surveyed Step 3: throwing: two high precision references emitted using laser leveler
Line, excavation face upslide measures two and is mutually perpendicular to visible laser rays at the construction field (site), by accurately adjusting, it is ensured that vertical
Reference line is overlapped with the central axes control point of other pile No., can assert vertical reference be canal axes, horizontal datum it is exhausted
It is the high H of sight of laser leveler to elevation.At this point it is possible to using hand-held rangefinder (range accuracy ± 2mm/100m, band both sides
To level(l)ing bubble), the orthogonal enhancing point that alignment laser leveler is surveyed in face upslide measures laser leveler to area on the spot
The distance S in face can calculate the pile No. K (K=X+S) and practical drilling depth of face.
Step 4: tunnel setting-out: according to design element, calculating and demarcate face axis centre point or hole blasting design hole
Position.According to the design parameter of tunnel longitudinal slope and cross-sectional design parameter is excavated, extremely using hand-held stadia surveying instrument when necessary
The distance of face, successively calculates the difference for being intended to setting-out point and reference line, and field measurement is simultaneously demarcated.Straight line tunnel setting-out includes
Following two:
1), tunnel setting-out of the linear type without gradient: the design section parameter calculated according to before successively calculates and is intended to layout point
The difference of position and reference line, field measurement are simultaneously demarcated, it can be achieved that speedy lofting face axis centre point, design profile point or brill
The specific location of hole design point.Round excavated section of the linear type without gradient, as long as having demarcated center location, other profiles
Point can be demarcated according to radius is excavated, and if it is the excavated section of the shape of a hoof (or gateway opening type), go out the calibration center of circle, it is also necessary to
Demarcate some specific profile points.
2), linear type has the tunnel setting-out of gradient: emphasis will calculate the elevation of center location, laser water according to design grade
The design of (pile No. X0) excavates center of circle elevation as H0 at level erection, if design gradient is P% (meeting with positive and negative), passes through hand
Stadia surveying face is held to the horizontal distance S of instrument, then face excavation design center of circle elevation H '=H0+S × P%.It calculates
The difference of center of circle elevation and live given level reference line is designed, field measurement and can be demarcated, work and linear type thereafter
Tunnel setting out method without gradient is the same.
Step 5: enhance process inspection and review.For the first time when setting-out, the area using high precision total station to setting-out is needed
Facial contour point and characteristic point carry out live review, it is ensured that the accuracy measured using laser leveler.Meanwhile with total station in tunnel
The top in hole can lay permanent axis point, lay stringcourse section point and elevational point in two sides, and laser leveler is facilitated to measure
Cheng Jinhang checks review, reduces error probability.Generally according to the speed for boring quick-fried drilling depth, it is desirable that use whole station after 3 ~ 4 quick-fried circulations of brill
Instrument carries out primary review, while the axial line control point for next stage of deploying to ensure effective monitoring and control of illegal activities comprehensively.
Claims (4)
1. a kind of method suitable for linear type canal axes positioning measurement, it is characterised in that: be suitable for linear type including one kind
Canal axes positioning measuring device, the device include laser leveler (1), and laser leveler (1) passes through bindiny mechanism (2) and three
Foot prop (3) centering connection；The bindiny mechanism (2) includes hollow stem (4), and hollow stem (4) includes upper interconnecting piece (4-1) and lower company
Socket part (4-2), wherein be respectively equipped with external screw thread (4-3) and internal screw thread (4- on upper interconnecting piece (4-1) and lower interconnecting piece (4-2)
4), external screw thread (4-3) and internal screw thread (4-4) the screw rod phase with the centering threaded hole of laser leveler (1), tripod (3) respectively
Matching；Point is overlapped with the control point of tunnel central axes under the visible laser of the laser leveler (1)；The laser leveler
(1) model EK-268GJ；
The bracket of the tripod (3) is retractable structure；
The tripod (3) is equipped with convertible wheel carrier, and convertible wheel carrier includes fold-type bar (8), the inflection point and three of fold-type bar (8)
Hingedly, longer section of bottom end of fold-type bar (8) is equipped with universal rolling wheel (5), is equipped with handle (6) compared with short section foot prop (3), fold-type bar
(8) when longer section is vertical, tripod (3) is liftoff and longer section of fold-type bar (8) passes through cutting ferrule (7) clamping；
Longer section of the fold-type bar (8) is formed by connecting by upper and lower thread bush (8-1) and middle screw rasp bar (8-2)；
The internal diameter of the outer diameter of upper interconnecting piece (4-1) external thread rod and lower interconnecting piece (4-2) internal thread hole is 16mm；
Locating measurement method the following steps are included:
It sets tunnel central axes Step 1: surveying and demarcates: total station survey being taken to set linear type tunnel central axes and demarcate tunnel at the scene
Hole central axes control point；
Step 2: accurate set up, laser leveler three-dimensional absolute fix laser leveler: is passed through into bindiny mechanism and common survey
Tripod is fixed, and to point under the visible laser by finely tuning mobile laser leveler, laser leveler is erected at tunnel axis
On the control point of line, then the two-dimensional plane coordinate at laser leveler center has been fixed；Measuring instrument is high again, can accurately calculate laser
The sight of level meter is high, to realize the three-dimensional absolute fix of laser leveler；
Survey canal axes and height datum line Step 3: throwing: the two high precision reference lines emitted using laser leveler are being applied
The throwing of work scene measures two and is mutually perpendicular to visible laser line, by accurately adjusting, it is ensured that in vertical reference line and other calibration
Axial line control point is overlapped, and can assert that vertical reference is canal axes, the absolute elevation of horizontal datum is laser leveler
Sight is high；
Step 4: tunnel setting-out: according to design element, calculating and demarcate face axis centre point or hole blasting design hole location；Root
According to tunnel longitudinal slope design parameter and excavate cross-sectional design parameter, using hand-held stadia surveying instrument to face away from
From successively calculating is intended to the difference of setting-out point and reference line, and field measurement is simultaneously demarcated；
Step 5: enhance process inspection and review: for the first time when setting-out, needing the face wheel using high precision total station to setting-out
Exterior feature point and characteristic point carry out live review；Meanwhile permanent axis point is laid, in two sides laying waist at the top of tunnel with total station
Line section point and elevational point facilitate laser leveler to carry out inspection review in measurement process, reduce error probability.
2. a kind of method suitable for linear type canal axes positioning measurement according to claim 1, it is characterised in that: institute
It states total station in step 5 and carries out primary review, while the axis control for next stage of deploying to ensure effective monitoring and control of illegal activities comprehensively after boring quick-fried circulation every 3 ~ 4
Point processed.
3. a kind of method suitable for linear type canal axes positioning measurement according to claim 1, it is characterised in that: institute
Stating the tunnel setting-out in step 4 includes the tunnel setting-out that linear type has gradient without the tunnel setting-out of gradient, linear type, wherein straight
Tunnel setting-out of the line style without gradient is simultaneously demarcated, it can be achieved that quickly putting according to the difference for being intended to setting-out point and reference line, field measurement
The specific location of sample face axis centre point, design profile point or hole blasting design hole location；Linear type has the tunnel setting-out of gradient
According to the difference of center of circle elevation and live given level reference line, field measurement and can demarcate, work thereafter and linear type without
The tunnel setting out method of gradient is the same.
4. a kind of method suitable for linear type canal axes positioning measurement according to claim 3, it is characterised in that: institute
The excavated section that tunnel setting-out of the linear type without gradient includes the shape of a hoof or gateway opening type is stated, the excavated section is except the calibration center of circle
Outside, it is also necessary to demarcate some specific profile points.
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| CN109556539B (en) * | 2018-12-29 | 2021-07-02 | 上海山南勘测设计有限公司 | Large-gradient tunnel axis detection method based on shield segment determination |
| CN110412631A (en) * | 2019-08-13 | 2019-11-05 | 中电建十一局工程有限公司 | A kind of linear engineering GPS speedy lofting construction method |
| CN110672079B (en) * | 2019-10-12 | 2021-12-14 | 中铁大桥局集团第一工程有限公司 | Rapid and precise lofting guide measurement method |
| CN111947606B (en) * | 2020-08-05 | 2022-05-31 | 青岛海大建科岩土工程有限公司 | Tunnel central axis auxiliary measuring device and measuring method thereof |
| CN112407106B (en) * | 2020-11-20 | 2022-05-17 | 苏州智加科技有限公司 | Installation method and device of split type binocular camera |
| CN112576257A (en) * | 2020-12-04 | 2021-03-30 | 中交第二航务工程局有限公司 | Tunnel blast hole lofting positioning method |
| CN115234165B (en) * | 2022-09-19 | 2022-12-09 | 山西中煤平朔爆破器材有限责任公司 | Blasting drilling equipment is used in blasting construction |
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| CN102322854B (en) * | 2011-08-09 | 2013-04-17 | 山东大学 | Tunnel monitoring measuring point and TSP (Total Suspended Particulate) blasthole layout device and method |
| CN103335640B (en) * | 2013-06-18 | 2015-09-09 | 中国电子科技集团公司第二十六研究所 | A kind of automatic leveling and gyrocompassing see collimation device |
| CN104515508A (en) * | 2013-09-30 | 2015-04-15 | 常州维尔曼光电仪器有限公司 | Four-directional cross line laser |
| CN204902841U (en) * | 2015-08-06 | 2015-12-23 | 李文 | Automatic stand -type high accuracy centering rod |
| CN206740090U (en) * | 2017-05-24 | 2017-12-12 | 中国葛洲坝集团三峡建设工程有限公司 | One kind is applied to linear pattern canal axes positioning measuring device |
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