CN1967144A - Method for determining position of ground point of staying wire of pole tower - Google Patents
Method for determining position of ground point of staying wire of pole tower Download PDFInfo
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- CN1967144A CN1967144A CN 200610019120 CN200610019120A CN1967144A CN 1967144 A CN1967144 A CN 1967144A CN 200610019120 CN200610019120 CN 200610019120 CN 200610019120 A CN200610019120 A CN 200610019120A CN 1967144 A CN1967144 A CN 1967144A
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- point
- backguy
- unearthed
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Abstract
This invention relates to a tower cable unearthed location determination method. The purpose of this invention is to provide a tower cable unearthed location determination method, to overcome the shortages of ''getting closer'' measuring cable unearthed location, which is the terrain limited greatly, low precision, error accumulation to error probability augment. Using J6 optical theodolite and tower foot as measuring tools, calculates the observed data and the known data into the formula Delt=kl sin2z-(H-i+v-0.5kl sin2z)tgalpha, so determines the cable unearthed location. The tower cable unearthed location determination method of the invention has useful technical results: high precision, high efficiency, easy to operate and strong spreading, wide scope of application.
Description
Technical field
The present invention relates to a kind of method of definite position of ground point of staying wire of pole tower.
Technical background
The shaft tower of circuit needs backguy mostly at present, but the location of backguy unearthed point is pretty troublesome, and calculated amount is very big and complicated.Fig. 1, Fig. 2 are planimetric map and the elevation drawing that the backguy of ground power transmission sequence backguy shaft tower is arranged, (this intersection point is fixed with stake for the intersection point of the angle β of angle α, backguy and the line direction of backguy and shaft tower, backguy and shaft tower center line and the intersection point on shaft tower center and ground, weighing lever tower Center stake) height H between (claim " exhale and claim height ", be called for short " exhaling height ") is design data.
The intersection point M on backguy and ground claims the backguy unearthed point---this point is fixed with stake, claims backguy secondary stake.The position of backguy unearthed point is by the decision of two aspect factors, and the one, the angle β of backguy and line direction, the 2nd, the horizontal range D--of this point and shaft tower center O sees Fig. 1, Fig. 2.The survey of β is established and can be used transit according to shaft tower position Center stake and the secondary stake of line direction, and the employing angle is surveyed equipment, method and drawn.The influence of aspects such as need taking all factors into consideration topographic condition and instrument apparatus is established in the survey of D, establishes more complexly with respect to the survey of β, is the deciding factor that the backguy unearthed point is surveyed equipment, method.
Influence in the orographic factor that the survey of D establishes, along the topographic section of stayguy direction--being called " backguy section ", is principal element.The backguy section divides single type section and compound cross-section two classes by its shape.Single type section, its ground do not have the gradient or gradient unanimity, divide two kinds of horizontal type and apsaclines--see Fig. 3.Compound section, its ground inclination and aspect change with distance, divide three kinds of convexs, matrix, undaform--see Fig. 4.
At present to the survey equipment, method of backguy unearthed point, employing be " moving closer to method ", this method is used instruments such as tape measure, line rod, counter.Method of operating is as follows:
Be illustrated in figure 5 as determining of direction of fall backguy unearthed point.The first step calculates a
1=H tg α is a reference point with shaft tower position center O then, measures a with tape measure from O point level in the backguy section
1Distance obtains C
1Point is again at C
1The upright line rod of point, and make line rod vertical, during actual the measurement, above-mentioned two work are carried out together, and available line rod is tape measure fixedly, and establishes the special messenger commander tape measure maintenance level, line rod are kept vertically, and the while obtains ground subpoint O on the backguy section
1, measure b
1Length; Second step calculated a
2=b
1Tg α is then with O
1Be reference point, as stated above, obtain reference point O
2, measure b
2Length; The same a that calculates
3, a
4..., a
n, and measure b
3, b
4..., b
nLength is worked as b
nDuring≤0.2m, again from O
nDirectly measure along the slope direction apart from a
N+1=(1.1～2.0) b
nTg α (capping value when the gradient is big, the gradient hour take off limit value), the reference point O that obtains
N+1Be exactly position of ground point of staying wire--see the enlarged drawing among Fig. 5.
As shown in Figure 6, the first step is if get a toward the upward slope side vector
1The time, then line rod is erected in the descending side group on schedule on the O, and finds O
1The point.The definite of each point position should follow following principle all the time: this reference point is if above a last reference point, as O
1Above O, then next a step should be measured (promptly shortening) length a toward the electric pole direction
2, erect line rod and find O
2This reference point is if below a last reference point, as O
2At O
1The below, then at this reference point O
2Last setting line rod is extended respective length outward and finds next reference point.Work as b
nDuring≤0.2m, directly extend or a that reduces the distance along the slope direction again
N+1=(0.7～0.9) b
nTg α (take off limit value when the gradient is big, the gradient is hour capping value), the reference point O that obtains
N+1Be exactly position of ground point of staying wire--see the enlarged drawing among Fig. 6.
Use the advantage of this method to be: (1) apparatus is common.Tape measure, line rod, counter all are common instruments.(2) simple to operate.Only need to grasp upright line rod, draw tape measure, reading on tape measure such as calculates at technology on counter.(3) instrument cost is low.Instrument apparatus price only needs hundreds of unit.The deficiency point of this method is: (1) is subjected to the landform restriction big.To single type and the less backguy section of the gradient, easy to use.When landform is complicated,, use extremely inconvenient as waveform backguy section and the bigger single type backguy section of the discrepancy in elevation.(2) precision is low.The one, the restriction of tape measure and line rod manufacturing process; The 2nd, Human Physiology restriction, whether institute's tape measure that draws whether level and line rod vertically adopts range estimation; The 3rd, the accumulation of error when with a varied topography and ground inclination is big, is measured often, can produce the accumulation of error.The probability of makeing mistakes when (3) with a varied topography and ground inclination is big increases.When measuring toward the upward slope direction with on the backguy section of undaform, shorten when extending when length is measured, mistake appears handling easily; When the gradient is big, measure often, need corresponding the increasing of data of processing, wrong probability occurs and increase.
Summary of the invention:
The objective of the invention is to overcome " moving closer to method " and survey the deficiency of establishing the backguy unearthed point, a kind of method of definite position of ground point of staying wire of pole tower is provided.
The method of a kind of definite position of ground point of staying wire of pole tower of the present invention is characterized in that using J6 optical theodolite, Sopwith staff to be survey instrument, observation data and known data substitution formula is calculated, and determined the position of backguy unearthed point.
The method of a kind of definite position of ground point of staying wire of pole tower of the present invention, described formula are Δ=kl sin
2Z-(H-i+v-0.5kl sin2z) tg α; H, α are design data in the formula, and i is a fixed value, and l, v, Z are observation data.The Sopwith staff drop point is the backguy unearthed point when formula Δ=0.
The method of a kind of definite position of ground point of staying wire of pole tower of the present invention, described formula Δ is the backguy unearthed point less than 0.1 o'clock Sopwith staff drop point.
The method of a kind of definite position of ground point of staying wire of pole tower of the present invention uses Sopwith staff to move on the projection line of backguy, obtains the observation data of difference, and the substitution formula calculates the Δ of difference, when Δ less than 0.1 the time, this point is shaft tower backguy unearthed point.
The method of a kind of definite position of ground point of staying wire of pole tower of the present invention, with J6 optical theodolite, Sopwith staff is survey instrument, with the counter is computational tool, calculates in the formula with given data and observation data substitution invention, and determines the position of backguy unearthed point.
1, computing formula determines
As Fig. 7 is that synoptic diagram is established in the survey of backguy unearthed point, and O is the intersection point on shaft tower center line and ground, and M is a backguy unearthed point to be measured, its position the unknown, and M ' is backguy unearthed point--the point of staff of visual estimation.
According to tacheometric survey principle and triangle principle, have:
D′＝kl sin
2z .............(1)
h′＝0.5kl sin2z+i-v ......(2)
D
0＝(H-h′)tgα............(3)
In the formula
H: exhale to claim height
α: the angle of backguy and shaft tower center line
D:O is to the horizontal range of M
D ': O is to the horizontal range of M '
H ': O is to the discrepancy in elevation of M '
K: stadia multiplication constant, its value are 100
L: chi interval, the difference of reading of transit stadia lines on Sopwith staff
I: the instrument height, the theodolite telescope rotation center is to the vertical height of O
V: surveyor's beacon height, the reading of silk on Sopwith staff in the transit
Z: zenith distance, the perpendicular dish of transit reading
Make Δ=D '-D
0... .... (4)
When Δ=0, D '=D then
0=D, M ' overlaps with M, and this point is the backguy unearthed point.
With formula (1), formula (2), formula (3) substitution formula (4), have
Δ＝kl sin
2z-(H-i+v-0.5kl sin
2z)tgα............(5)
H, α are design data in the formula, and i is a fixed value, and H, α, i are all constant.L, v, Z are observation data.
2, method of operating
(1) transit arrangement and data are obtained
When survey is established, with the shaft tower center O is the survey station point, observation person settles transit thereon, with the line direction is back apparent direction (the secondary pile center of aiming line direction, regulating the horizontal dial reading is 0 ° 00 ' 00 "); along or be rotated counterclockwise telescope to make the horizontal dial reading be the angle β of backguy and line direction, theodolite telescope collimation axis direction is stayguy direction at this moment.Measure the high i of instrument, look into and get design load H, α.
According to H and topographic features visual estimation point M ' and erect Sopwith staff, observation person reads chi spacing value l, middle reading v, zenith distance z to upright chi person on stayguy direction.
(2) data processing
Data-processing operator's (can be held a concurrent post by observation person) calculates constant H, α, i and observation data l, v, z substitution formula (5) on counter, obtain the Δ value.
(3) position of ground point of staying wire determines
As by calculating Δ ≠ 0, then need mobile Sopwith staff on stayguy direction, redefine point of staff and observe, reading and data processing, up to Δ=0 (in the practical application, Δ≤0.1 o'clock is satisfied accuracy requirement fully), the point of staff M ' of this moment is the backguy unearthed point, carries out sign.
Δ ≠ 0 o'clock, the method for mobile Sopwith staff is on stayguy direction: Δ＞0, move chi to the instrument direction; Δ＜0 is moved chi in the other direction to instrument.
The useful technique effect that the method for a kind of definite position of ground point of staying wire of pole tower of the present invention has is:
1, precision height.The one, with the tacheometric survey method distance accuracy is improved; The 2nd, employed surveying instrument device manufacturing process error is little and improved measuring accuracy; The 3rd, the data of surveying are disposable measurement results, do not have error accumulation.
2, efficient height.Adopt the tacheometric survey method to improve measuring speed.
3, easy and simple to handle.Only need to grasp the technology such as data input on the basic operation of transit, upright chi, the counter.
4, generalization is strong.The J6 optical theodolite, counter, the Sopwith staff that use are all the routine measurement instrument and equipment, and cost is not high, and general unit in charge of construction can bear fully, therefore are easy to obtain promote.
5, applied widely.Be not subjected to the restriction of backguy section type, not only be fit to single type backguy section, be fit to compound backguy section yet.
Description of drawings
Fig. 1 is the planimetric map synoptic diagram that the backguy of ground power transmission sequence backguy shaft tower is arranged;
Fig. 2 is the elevation drawing synoptic diagram that the backguy of ground power transmission sequence backguy shaft tower is arranged;
Fig. 3 is that the topographic section along stayguy direction is the single type sectional schematic diagram;
Fig. 4 is that the topographic section along stayguy direction is compound sectional schematic diagram;
Fig. 5 moves closer to the method survey to establish one of backguy unearthed point synoptic diagram;
Fig. 6 moves closer to the method survey to establish two synoptic diagram of backguy unearthed point;
Fig. 7 is that synoptic diagram is established in the survey of backguy unearthed point.
Embodiment
The method of a kind of definite position of ground point of staying wire of pole tower of the present invention, adopt routine measurement instrument and equipment-J6 optical theodolite, programmable function counter and Sopwith staff, science derivation computing formula also is adapted for the counter program with it, be input in the programmable calculator with design data (as exhaling the angle that claims height, shaft tower and backguy), according to the tacheometric survey principle, measure the horizontal range and the discrepancy in elevation with J6 optical theodolite and Sopwith staff, carry out data processing with the counter program, obtain the position of backguy unearthed point.
According to the programming principle of programmable function counter, with formula (5) Δ=kl sin
2Z-(H-i+v-0.5kl sin2z) tg α is adapted for the counter program, input programmable function counter, input design data H, α and constant i, v handle observation data l, Z input more simultaneously, can draw Δ very soon, the point of staff M ' when Δ=0 is the backguy unearthed point.
Operation steps
(1) program input
Formula (5) is the calculation procedure following (numeral or symbol are the button titles on the counter) on the counter of CASIO fx-3600pv in model:
1，Kin，1，MODE，EXP，P1，ENT，Kin，1，ENT，Kin，2，ENT，°′″，ENT，°′″，ENT，°′″，Kin，3，Sin，Shift，X
2，×，Kout，1，＝，Kin，4，÷，Kout，3，Tan，＝，×，Kout，6，＝，+，Kout，4，＝，Shift，HLT，Kout，4，Shift，RTN，MODE，·。
On counter, press each key successively, then finish the program input.
(2) transit is settled and data read
When survey was established, observation person settled transit at O, measured the high i of instrument.Data-processing operator's (can be held a concurrent post by observation person) looks into and gets H, α design load, carries out constant and deposit on counter, operation steps following (the button title on the symbolic representation counter in [], the numerical value of this symbol representative of symbolic representation that [] is outer):
H【-】i【＝】【Kin】【5】α【Tan】【＝】【Kin】【6】
Upright chi person visual estimation point M ' and erect Sopwith staff on stayguy direction, observation person reads Kl, middle reading v, zenith distance z.
(3) data processing
Data-processing operator's operation as follows on counter (the button title on the symbolic representation counter in [], [] is outer by prompting operation, Δ, D ' they are result of calculation):
[P1] input Kl value [RUN] input v[RUN] input z number of degrees value (not according to ° ' " key) the second numerical value (not according to " ° ' " key) [RUN] of fractional value (not according to " ° ' " key) [RUN] input z of [RUN] input z shows Δ [RUN] demonstration D '
(4) determining of backguy unearthed point
As Δ ≠ 0 of calculating by program, then need mobile Sopwith staff on stayguy direction, observation, reading again, the data-processing operator repeats the aforesaid operations step and carries out data processing, and up to Δ=0, this moment, point of staff M ' was the backguy unearthed point, carried out sign.Write down D ' (this moment D '=D), can be used for calculating backguy length simultaneously.
Δ ≠ 0 method of mobile scale on stayguy direction is: Δ＞0, move chi to the instrument direction; Δ＜0 is moved chi in the other direction to instrument.
Embodiment
Certain backguy shaft tower design load is as follows: tower height 22.0m, H=20.62m, α=30 °, measure i=1.385m.
Observation and result of calculation such as following table.
Table 1 backguy is surveyed and is established record sheet
| The backguy numbering | Observation frequency (upright chi number of times) | Observed reading | Calculated value Δ/m | ||
| v/m | l/m | z/°′″ | |||
| | 1 2 3 1 2 1 1 2 | 1.020 1.026 1.031 0.447 0.446 0.320 2.228 2.234 | 0.146 0.141 0.139 0.125 0.119 0.106 0.126 0.124 | 100 56 10 102 04 08 101 52 42 94 11 11 94 09 47 81 49 00 90 01 20 90 01 56 | 0.810 0.121 -0.006 0.545 -0.023 -0.043 0.206 0.001 |
In the survey of above-mentioned each backguy was established, each backguy that is numbered A, B, C, D was calculated through 3 times, 2 times, 1 time, 2 times upright chis and observation respectively, and its Δ value has satisfied the accuracy requirement of fixed point less than 0.05 (maximum 0.043, minimum 0.001).The last point of staff of each backguy is exactly the backguy unearthed point, i.e. the point of staff first time of the point of staff for the third time of A backguy, the point of staff second time of B backguy, C backguy, the point of staff second time of D backguy are respectively the backguy unearthed point of A, B, C, D.
Claims (4)
1, a kind of method of definite position of ground point of staying wire of pole tower is characterized in that using J6 optical theodolite, Sopwith staff to be survey instrument, observation data and known data substitution formula is calculated, and determined the position of backguy unearthed point.
2, want the method for 1 described a kind of definite position of ground point of staying wire of pole tower according to right, it is characterized in that described formula is Δ=kl sin
2Z-(H-i+v-0.5kl sin2z) tg α; H, α are design data in the formula, and i is a fixed value, and l, v, Z are the observation data of J6 optical theodolite; The Sopwith staff drop point is the backguy unearthed point when formula Δ=0.
3, want the method for 2 described a kind of definite position of ground point of staying wire of pole tower according to right, it is characterized in that described formula Δ is the backguy unearthed point less than 0.1 o'clock Sopwith staff drop point.
4, want the method for 1 described a kind of definite position of ground point of staying wire of pole tower according to right, it is characterized in that using Sopwith staff to move on the projection line of backguy, obtain the observation data of difference, the substitution formula calculates the Δ of difference, when Δ less than 0.1 the time, this point is shaft tower backguy unearthed point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610019120 CN1967144A (en) | 2006-05-16 | 2006-05-16 | Method for determining position of ground point of staying wire of pole tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610019120 CN1967144A (en) | 2006-05-16 | 2006-05-16 | Method for determining position of ground point of staying wire of pole tower |
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| CN1967144A true CN1967144A (en) | 2007-05-23 |
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| CN 200610019120 Pending CN1967144A (en) | 2006-05-16 | 2006-05-16 | Method for determining position of ground point of staying wire of pole tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023001A (en) * | 2010-11-03 | 2011-04-20 | 河南省电力公司洛阳供电公司 | Method for checking height difference between joints of cross arms for cross arms of dual-column pole tower |
-
2006
- 2006-05-16 CN CN 200610019120 patent/CN1967144A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023001A (en) * | 2010-11-03 | 2011-04-20 | 河南省电力公司洛阳供电公司 | Method for checking height difference between joints of cross arms for cross arms of dual-column pole tower |
| CN102023001B (en) * | 2010-11-03 | 2015-06-24 | 河南省电力公司洛阳供电公司 | Method for checking height difference between joints of cross arms for cross arms of dual-column pole tower |
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