CN116007510A - Method for correcting length of stone throwing pipe of platform type leveling ship - Google Patents
Method for correcting length of stone throwing pipe of platform type leveling ship Download PDFInfo
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- CN116007510A CN116007510A CN202310292794.2A CN202310292794A CN116007510A CN 116007510 A CN116007510 A CN 116007510A CN 202310292794 A CN202310292794 A CN 202310292794A CN 116007510 A CN116007510 A CN 116007510A
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Abstract
The invention belongs to the technical field of leveling ship measurement and control systems, and particularly relates to a method for correcting the length of a stone throwing pipe of a platform type leveling ship. The method comprises the following steps: a laser range finder is arranged at the upper part of the stone throwing pipe, and a reflecting plate corresponding to the laser range finder is arranged at the lower part of the stone throwing pipe; calibrating the initial length of the stone throwing pipe before water is added into the stone throwing pipe; and during the period of paving and leveling the gravel foundation bed after the stone throwing pipe is filled with water, the leveling ship measuring and controlling system monitors the length change of the stone throwing pipe in real time through the laser range finder and automatically sends a prompt whether to correct the length of the stone throwing pipe according to the monitoring condition. The invention can monitor and correct the length of the stone throwing pipe in real time during the laying and leveling of the gravel foundation bed, improves the elevation control precision of the leveling ship measurement and control system, and further ensures the elevation precision quality of the immersed tunnel gravel foundation bed after the laying and leveling.
Description
Technical Field
The invention belongs to the technical field of leveling ship measurement and control systems, and particularly relates to a method for correcting the length of a stone throwing pipe of a platform type leveling ship.
Background
The platform leveling ship is specially designed for laying a immersed tunnel gravel foundation bed; the center of the leveling ship is a moon pool, a cart capable of moving longitudinally is arranged on the leveling ship, a trolley with a stone throwing pipe is arranged on the cart, and the trolley can move transversely along the cart; the stone throwing pipe is driven by the cart and the trolley to walk along a preset stone throwing track, and meanwhile, stones are paved on the seabed trough bed to form a stone foundation bed.
The construction water area of the current open sea immersed tube tunnel is deeper and deeper, and the construction precision requirement is higher and higher; when the stone throwing leveling measurement and control system of the leveling ship is used for providing elevation control for paving a broken stone foundation bed, the stone throwing pipe on the leveling ship expands with heat and contracts with cold due to the influence of the temperature change of the construction environment, the length of the stone throwing pipe can be changed, the elevation of the bottom end of the stone throwing pipe can be changed, and therefore the elevation control precision of the stone throwing leveling measurement and control system can be damaged. Researches show that when the construction environment temperature of the stone throwing pipe suddenly changes, the maximum variable quantity of the length of the stone throwing pipe can even reach +/-1.5 cm, and the latest requirement on the elevation precision after laying and leveling of a immersed tunnel gravel foundation bed is +/-4 cm; therefore, the change of the length of the riprap pipe can possibly have great influence on the elevation precision of paving and leveling the gravel foundation bed, and the safety risk is brought to the subsequent immersed tube installation construction; therefore, it is necessary to monitor and correct the length of the polished pipe during the leveling of the ballast bed laying.
Disclosure of Invention
Aiming at the defects existing in the related art, the invention provides a method for correcting the length of a stone throwing pipe of a platform type leveling ship, which aims at monitoring and correcting the length of the stone throwing pipe in real time during paving and leveling of a gravel foundation bed so as to improve the elevation control precision of a leveling ship measurement and control system and ensure that the elevation precision of a immersed tunnel gravel foundation bed after paving and leveling meets the expected requirement.
The invention relates to a method for correcting the length of a stone throwing pipe of a platform type leveling ship, which comprises the following steps:
s1, arranging measuring equipment: a laser range finder is arranged on the outer wall of the upper part of the stone throwing pipe, a reflecting plate corresponding to the laser range finder is convexly arranged on the outer wall of the lower part of the stone throwing pipe, and the laser range finder is in communication connection with a measurement and control system of the leveling ship;
s2, calibrating the initial length of the riprap pipe: before the stone throwing pipe is put into water, the initial length from the top end to the bottom end of the stone throwing pipe is calibrated
Inputting the data into a measurement and control system of the leveling ship;
s3, correcting the length of the stone throwing pipe, and after the stone throwing pipe is put into water to the construction height, performing the following steps:
s31, before paving and leveling the crushed stone foundation bed, a measurement and control system reads a measurement result of the laser range finder
To calculate the construction length of the riprap pipe +.>
；
S32, during the paving and leveling of the gravel foundation bedReal-time measurement result of monitoring laser range finder by measurement and control system
To calculate the actual length change of the riprap tube in real time>
，/>
The method comprises the steps of carrying out a first treatment on the surface of the If->
Is greater than the tolerance value of the preset length->
The measurement and control system automatically sends out whether the construction length of the riprap pipe is +.>
Prompting correction; if->
No more than
And the measurement and control system continues to monitor. />
According to the technical scheme, the leveling ship measurement and control system can monitor and correct the length of the stone throwing pipe in real time during the paving and leveling of the stone breaking foundation bed through the arrangement of the laser range finder, so that the elevation control precision of the leveling ship measurement and control system is improved, and the elevation precision quality of the immersed tunnel stone breaking foundation bed after paving and leveling is further guaranteed.
In some of these embodiments, in step S1, the vertical distance of the laser rangefinder from the top end of the riprap tube is calibrated
Calibrating vertical distance of reflecting plate from bottom end of stone throwing pipe>
And will->
、/>
And inputting into a measurement and control system.
In some of these embodiments, in step S2, the length of the riprap tube from top to bottom is measured with a steel rule before the riprap tube is installed on the planing boat
The method comprises the steps of carrying out a first treatment on the surface of the After the riprap pipe is installed on the leveling vessel, the distance from the top end to the bottom end of the riprap pipe is measured by using a total station arranged on the shore or an artificial island>
The method comprises the steps of carrying out a first treatment on the surface of the If->
And->
If the difference value between them exceeds the limit, the procedure is repeated +.>
And->
Is a measurement of (2); if->
And->
The difference between them is not exceeded, then +.>
Initial length of the riprap tube from top to bottom +.>
。
In some of these embodiments, in step S2, the initial length of the tube to be riprapped from top to bottom
After the determination, starting the laser range finder, and reading the measurement result of the laser range finder by a measurement and control system>
To calculate the length from the top to the bottom of the riprap pipe
，/>
The method comprises the steps of carrying out a first treatment on the surface of the Will->
And->
A check is made to correct the laser rangefinder.
In some of these embodiments, in step S31, the construction length of the riprap pipe
。
In some embodiments, in step S1, a temperature measuring instrument is further installed on the outer wall of the lower portion of the riprap pipe, and the temperature measuring instrument is in communication connection with the measurement and control system;
in step S31, the measurement and control system reads the temperature of the construction water area where the stone throwing pipe is positioned through a temperature measuring instrument
；
In step S32, the measurement and control system monitors the real-time measurement result of the laser rangefinder
In this case, the real-time measurement result of the temperature measuring device is also monitored simultaneously +.>
To calculate the theoretical length variation of the riprap tube in real time according to the formula (1)>
The method comprises the steps of carrying out a first treatment on the surface of the If->
And (3) with
If the difference value between the two is over-limit, the measurement and control system automatically gives an abnormal alarm to prompt an operator to check whether the laser range finder and the temperature measuring instrument work normally or not, and the process is repeated +.>
、/>
To re-resolve +.>
And->
The method comprises the steps of carrying out a first treatment on the surface of the If->
And->
The difference between the two is not exceeded, the measurement and control system is based on +.>
And->
To determine whether to issue a construction length of the riprap pipe +.>
Prompting correction;
in the formula (1), the components are as follows,
is the linear expansion coefficient of the riprap pipe.
According to the technical scheme, through the arrangement of the temperature measuring instrument, the monitoring accuracy of the length variation of the riprap pipe is ensured, and then the measurement and control risk during the paving and leveling period of the gravel foundation bed is reduced.
In some of these embodiments, in step S32, when the measurement and control system automatically issues whether to construct the length of the riprap pipe
When the correction prompt is carried out, the correction value is automatically calculated and displayed, and an operator comprehensively judges whether the construction length of the riprap pipe is +.>
And (5) performing correction. The technical scheme realizes real-time automatic prompt and man-machine interaction type real-time correction of the length correction of the stone throwing pipe.
In some of these embodiments, in step S1, a GPS positioning device is installed on the top end of the riprap tube;
in step S31, the position of the riprap pipe and the construction elevation of the top end thereof are obtained by the GPS positioning device, and the construction length of the riprap pipe is combined
And (3) obtaining the construction elevation of the bottom end of the stone throwing pipe, and accordingly adjusting the extending length of the leveling scraper which is slidably connected to the bottom end of the stone throwing pipe, and further paving and leveling the gravel foundation bed.
In some embodiments, the laser range finder and the temperature measuring instrument are both arranged in a protection box, the protection box is fixedly arranged on a damping bracket, and the damping bracket is connected with the riprap pipe in a welding mode; the protection box and the shock absorbing support are made of stainless steel materials.
Based on the technical scheme, the method for correcting the length of the stone throwing pipe of the platform type leveling ship in the embodiment of the invention can monitor and correct the length of the stone throwing pipe in real time during laying and leveling of the crushed stone foundation bed, improve the elevation control precision of a leveling ship measurement and control system, and further guarantee the elevation precision quality after laying and leveling of the crushed stone foundation bed of the immersed tunnel.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a layout diagram of measuring equipment in a method for correcting the length of a stone throwing pipe of a platform type leveling ship;
FIG. 2 is a schematic structural view of a protection box and a shock absorbing bracket in the method for correcting the length of a stone throwing pipe of a platform type leveling ship;
fig. 3 is a flowchart of a method for correcting the length of a stone throwing pipe of a platform type leveling ship according to the present invention.
In the figure: 1. a stone throwing pipe; 2. a GPS positioning device; 3. a laser range finder; 4. a reflection plate; 5. a temperature measuring instrument; 6. leveling the scraper; 7. a protection box; 8. and a damping bracket.
Detailed Description
The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "top," "bottom," "inner," "outer," "left," "right," "front," "rear," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 3, the method for correcting the length of the stone throwing pipe of the platform type leveling ship comprises the following steps:
s1, arranging measuring equipment: a laser range finder 3 is arranged on the outer wall of the upper part of the stone throwing pipe 1, and a reflecting plate 4 corresponding to the laser range finder 3 is convexly arranged on the outer wall of the lower part of the stone throwing pipe 1; it can be understood that no shielding exists between the laser range finder 3 and the reflecting plate 4, and the laser range finder 3 can automatically and real-timely measure the vertical distance between the laser range finder 3 and the reflecting plate from top to bottom; the laser range finder 3 is in communication connection with the measurement and control system of the leveling ship so as to transmit the measurement result into the measurement and control system in real time.
S2, calibrating the initial length of the riprap pipe 1: before the stone throwing pipe 1 is put into water, the stone throwing pipe 1 is in a stable atmosphere, and the initial length from the top end to the bottom end of the stone throwing pipe 1 is calibrated
And input the data into a measurement and control system of the leveling ship.
S3, correcting the length of the riprap pipe 1, and putting water into the riprap pipe 1 to a construction height, wherein most of the length of the riprap pipe 1 is in an underwater construction environment; the step of correcting the length of the riprap pipe 1 specifically comprises the following steps:
s31, before paving and leveling the crushed stone foundation bed, a measurement and control system reads a measurement result of the laser range finder 3
To calculate the construction length of the riprap pipe 1 accordingly>
The method comprises the steps of carrying out a first treatment on the surface of the It is understood that the construction length of the riprap pipe 1 is +.>
The initial length of the riprap tube 1 calibrated in the step S2 +.>
There will be subtle differences but in practical use can be considered +.>
And->
Equivalent;
s32, monitoring real-time measurement results of the laser range finder 3 by the measurement and control system during paving and leveling of the crushed stone foundation bed
To calculate the actual length change of the riprap tube 1 in real time +.>
，/>
I.e. +.>
Is->
And->
The absolute value of the difference; if the actual length of the riprap tube 1 varies by +.>
Is greater than the tolerance value of the preset length->
The measurement and control system automatically sends out whether the construction length of the riprap pipe 1 is +.>
Prompting correction, namely, the control system automatically sends out correction of construction of the riprap pipe 1Length->
Displaying two selection keys of 'yes' and 'no' on the interface for the operator to intervene and select, i.e. determining whether to correct or not by the operator; if the actual length of the riprap tube 1 varies by +.>
Does not exceed the tolerance value of the preset length->
And the measurement and control system continues to monitor. It is understood that the skilled person can flexibly set the preset length tolerance value according to the elevation precision requirement of the paving and leveling of the gravel foundation bed>
Specific values of (2).
According to the above-mentioned exemplary embodiment, through the setting of the laser range finder 3, the leveling ship measurement and control system can monitor and correct the length of the riprap pipe 1 in real time during the paving and leveling of the gravel foundation bed, so that the elevation precision of the paving and leveling of the gravel foundation bed is prevented from being influenced due to the length change of the riprap pipe 1, the elevation control precision of the leveling ship measurement and control system can be improved, and the elevation precision of the immersed tunnel after the paving and leveling of the gravel foundation bed can be further guaranteed to meet the expected requirement.
As shown in fig. 1, in some embodiments, in step S1, after the laser rangefinder 3 and the reflection plate 4 are laid on the riprap tube 1, the vertical distance of the laser rangefinder 3 from the top end of the riprap tube 1 is calibrated
The vertical distance of the calibration reflecting plate 4 from the bottom end of the riprap tube 1 is +.>
And will->
、/>
And inputting into a measurement and control system. It will be appreciated that the laser rangefinder 3 is located near the top end of the riprap tube 1 and the reflecting plate 4 is located near the bottom end of the riprap tube 1, thus +.>
And->
The number of (2) is relatively small before and after the water is introduced into the riprap tube 1>
And
the value of (2) may be considered unchanged.
As shown in fig. 1 and 3, in some embodiments, in step S2, before the riprap pipe 1 is installed on the leveling vessel, the riprap pipe 1 is laid flat, and the length of the riprap pipe 1 is measured in sections by a steel rule, thereby obtaining the length from the top to the bottom of the riprap pipe 1
The method comprises the steps of carrying out a first treatment on the surface of the After the riprap pipe 1 is installed on the leveling ship, the riprap pipe 1 is adjusted to be in a normal vertical state, and the length of the riprap pipe 1 is measured for a plurality of times by using a total station arranged on the shore or an artificial island, so that the distance from the top end to the bottom end of the riprap pipe 1 is measured
The method for measuring the length of the riprap pipe 1 by the total station is well known to those skilled in the industry, and will not be described in detail herein; further, if total station measurement is +.>
With steel rule measurement result->
If the difference value between them exceeds the limit, the procedure is repeated +.>
And->
Is a measurement of (2); if total station measurement result->
With steel rule measurement result->
The difference between the two is not exceeded, the total station measurement result is + ->
Initial length +.>
. Thereby, the initial length +_ of the riprap tube 1 is completed>
Is defined by the calibration of (a).
As shown in fig. 1, in some embodiments, in step S2, an initial length of the tube 1 to be riprapped from top to bottom
After the determination, the laser rangefinder 3 is turned on, and the vertical distance +.>
Transmitting the data to a measurement and control system; the measurement and control system reads the measurement result of the laser range finder 3>
To calculate the length of the top to bottom of the riprap tube 1>
，/>
The method comprises the steps of carrying out a first treatment on the surface of the Will->
And->
The verification is performed, whereby correction of the laser rangefinder 3 is achieved.
As shown in fig. 1, in some embodiments, in step S31, the construction length of the riprap pipe 1
The construction length of the riprap pipe 1 after the water is put into the riprap pipe 1 but before the gravel foundation bed is paved and leveled is calculated.
As shown in fig. 1 and 3, in some embodiments, in step S1, a temperature measuring instrument 5 is further installed on the outer wall of the lower portion of the riprap tube 1, so that the temperature of the environment in which the riprap tube is located can be automatically and real-time measured; the temperature measuring instrument 5 is in communication connection with the measurement and control system of the leveling ship so as to transmit the measurement result into the measurement and control system in real time.
In step S31, the measurement and control system reads the measurement result of the laser rangefinder 3
At the same time, the temperature measuring instrument 5, namely the temperature of the construction water area where the riprap pipe 1 is positioned, is also read by the temperature measuring instrument 5>
。
In step S32, the measurement and control system monitors the real-time measurement result of the laser rangefinder 3
The real-time measurement result of the temperature measuring instrument 5 is also monitored simultaneously when>
Furthermore, the theoretical length variation of the riprap tube 1 is calculated in real time according to the formula (1)>
The method comprises the steps of carrying out a first treatment on the surface of the As is clear from the formula (1), if the temperature change of the construction water area where the riprap pipe 1 is located is large during the paving and leveling of the gravel bed, the theoretical length change amount of the riprap pipe 1 is +.>
And also increases with it;
in the formula (1), the components are as follows,
is the linear expansion coefficient of the riprap tube 1.
If the theoretical length of the riprap pipe 1 changes
Variation from the actual length of the riprap tube 1 +.>
If the difference value between the two is over-limited, the leveling ship measurement and control system automatically gives an abnormal alarm to prompt the operator to intervene and check whether the laser range finder 3, the temperature measuring instrument 5 and the like work normally or not, and the process is repeated +.>
、/>
To re-resolve +.>
And->
The method comprises the steps of carrying out a first treatment on the surface of the If the theoretical length of the riprap tube 1 varies by +.>
Variation from the actual length of the riprap tube 1 +.>
The difference value between the two is not exceeded, and the measurement and control system is added according to the actual length variation of the riprap pipe 1>
And presetLength tolerance value->
To determine whether to issue a construction length of the riprap pipe 1 +.>
And prompting correction.
Further, the length change of the riprap pipe 1 during the paving and leveling of the gravel foundation bed mainly depends on the temperature change of a construction water area, so that the theoretical length change of the riprap pipe 1 can be calculated by using a formula through the arrangement of the temperature measuring instrument 5, and is checked and verified with the actual length change of the riprap pipe 1 measured by the laser range finder 3, so that the monitoring accuracy of the length change of the riprap pipe 1 is ensured, and the measurement and control risk during the paving and leveling of the gravel foundation bed is reduced.
In some embodiments, in step S32, when the measurement and control system automatically sends out whether the construction length of the riprap pipe 1 is to be set
When the correction prompt is carried out, the correction value is automatically calculated and displayed, and an operator comprehensively judges whether the construction length of the riprap pipe 1 is +.>
The correction is carried out, so that the real-time automatic prompt and man-machine interaction type real-time correction of the length correction of the stone throwing pipe 1 are realized, and the possible errors and delays of manual calculation of the correction value are avoided.
As shown in fig. 1, in some embodiments, in step S1, a GPS positioning device 2 is installed at the top end of the stone throwing pipe 1, and the GPS positioning device 2 is communicatively connected to a measurement and control system of the leveling ship. In step S31, the position of the riprap pipe 1 and the construction elevation of the top end thereof are obtained by the GPS positioning device 2, and the construction length of the riprap pipe 1 is combined
The construction elevation of the bottom end of the riprap pipe 1 is obtained, and the extension length of the leveling scraper 6 which is connected with the bottom end of the riprap pipe 1 in a sliding way is adjusted according to the construction elevationAnd the gravel foundation bed is paved and leveled, so that the fine adjustment of the elevation position of the leveling scraper 6 is realized, and the elevation precision of paving and leveling the gravel foundation bed is improved. It will be understood by those skilled in the art that, in step S32, when the construction length of the riprap pipe 1 is +.>
When correction is carried out, the measurement and control system correspondingly adjusts the extending length of the leveling scraper 6 at the bottom end of the riprap pipe 1 so as to ensure the elevation precision of paving and leveling of the gravel foundation bed.
As shown in fig. 2, in some embodiments, the laser range finder 3 and the temperature measuring instrument 5 are both installed in a protection box 7, the protection box 7 is fixedly arranged on a shock absorption bracket 8, and the shock absorption bracket 8 is connected with the riprap tube 1 by welding; the protection box 7 and the shock absorbing bracket 8 are made of stainless steel materials. According to the exemplary embodiment, through the arrangement of the protection box 7 and the damping support 8, the protection and the installation of the laser range finder 3 and the temperature measuring instrument 5 are realized, and the influence on the measurement precision caused by thermal expansion and contraction and strong vibration is avoided.
The main flow steps of the method for correcting the length of the stone throwing pipe of the platform type leveling ship of the invention are briefly described below with reference to fig. 1 to 3:
1) The laser range finder 3 is arranged on the outer wall of the upper part of the riprap pipe 1, the reflecting plate 4 corresponding to the laser range finder 3 is convexly arranged on the outer wall of the lower part of the riprap pipe 1, and the temperature measuring instrument 5 is also arranged on the outer wall of the lower part of the riprap pipe 1;
2) Before the stone throwing pipe 1 is put into water, the initial length of the stone throwing pipe 1 is carried out by combining steel rule measurement and total station measurement
Is calibrated; then the laser range finder 3 is utilized to obtain the length of the riprap pipe 1, so that the laser range finder 3 is corrected;
3) After the stone throwing pipe 1 is put into water to the construction height and before the broken stone foundation bed is paved and leveled, the construction length of the stone throwing pipe 1 is obtained by the laser range finder 3
Synchronous passing temperature measuring instrument5 obtaining the temperature of the construction water area>
；
During the paving and leveling of the broken stone foundation bed, the measurement and control system monitors the actual length variation of the riprap pipe 1 in real time through the laser range finder 3
Synchronous real-time monitoring of construction water area temperature through temperature measuring instrument 5>
Solving the theoretical length variation of the riprap tube 1>
Will->
And->
Checking to ensure the monitoring accuracy of the length variation of the riprap pipe 1;
the measurement and control system is used for measuring and controlling the actual length variation of the stone throwing pipe 1
Tolerance value +.>
To determine whether to issue a construction length of the riprap pipe 1 +.>
Prompting correction; when the measurement and control system automatically gives out a prompt, a correction value is automatically calculated and displayed, and an operator comprehensively researches and judges whether the construction length of the riprap pipe 1 is +.>
Correcting; the measurement and control system continuously monitors until the laying and leveling operation of the immersed tube tunnel gravel foundation bed is completed.
In summary, according to the method for correcting the length of the stone throwing pipe of the platform type leveling ship, the laser range finders 3 and the temperature measuring instrument 5 are arranged, so that the leveling ship measurement and control system can monitor and correct the length of the stone throwing pipe 1 in real time during the paving and leveling of the stone throwing pipe 1, the height accuracy of the paving and leveling of the stone throwing pipe 1 is prevented from being influenced due to the length change of the stone throwing pipe, the height control accuracy of the leveling ship measurement and control system is improved, the height accuracy of the immersed tunnel stone throwing bed after the paving and leveling can be better ensured to meet the expected requirement, and the safety risk brought to the subsequent immersed tunnel installation construction is avoided.
Finally, it should be noted that: in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (9)
1. The method for correcting the length of the stone throwing pipe of the platform type leveling ship is characterized by comprising the following steps of:
s1, arranging measuring equipment: a laser range finder is arranged on the outer wall of the upper part of the stone throwing pipe, a reflecting plate corresponding to the laser range finder is convexly arranged on the outer wall of the lower part of the stone throwing pipe, and the laser range finder is in communication connection with a measurement and control system of the leveling ship;
s2, calibrating the initial length of the riprap pipe: before the stone throwing pipe is put into water, the initial length from the top end to the bottom end of the stone throwing pipe is calibrated
Inputting the measurement and control system of the leveling ship;
s3, correcting the length of the stone throwing pipe, after the stone throwing pipe is put into water to a construction height, the method comprises the following steps:
s31, before paving and leveling the crushed stone foundation bed, the measurement and control system reads the measurement result of the laser range finder
To calculate the construction length of the riprap pipe +.>
；
S32, during the paving and leveling of the crushed stone foundation bed, the measurement and control system monitors the real-time measurement result of the laser range finder
To calculate the actual length variation of the riprap tube in real time>
，/>
The method comprises the steps of carrying out a first treatment on the surface of the If->
Is greater than the tolerance value of the preset length->
The measurement and control system automatically sends out whether the construction length of the riprap pipe is +.>
Prompting correction; if it is
Not more than->
And the measurement and control system continues to monitor.
2. The method for correcting the length of a stone throwing pipe of a platform levelling ship according to claim 1, characterized in that in step S1, the vertical distance of the laser range finder from the top end of the stone throwing pipe is calibrated
Calibrating the vertical distance of the reflecting plate from the bottom end of the riprap pipe>
And will->
、/>
And inputting the data into the measurement and control system.
3. The method for correcting the length of a stone throwing pipe of a platform type leveling vessel according to claim 2, wherein in step S2, the length from the top end to the bottom end of the stone throwing pipe is measured with a steel rule before the stone throwing pipe is installed on the leveling vessel
The method comprises the steps of carrying out a first treatment on the surface of the After the riprap pipe is installed on the leveling vessel, measuring the distance from the top end to the bottom end of the riprap pipe by using a total station arranged on the shore or an artificial island>
The method comprises the steps of carrying out a first treatment on the surface of the If->
And->
If the difference value between them exceeds the limit, the procedure is repeated +.>
And->
Is a measurement of (2); if->
And->
The difference between them is not exceeded, then +.>
Initial length +.>
。
4. A method for correcting the length of a stone throwing pipe of a platform levelling ship according to claim 3, characterized in that in step S2, the initial length of the stone throwing pipe from top to bottom is to be calculated
After the determination, the laser range finder is started, and the measurement and control system reads the measurement result of the laser range finder>
To calculate the length of the top end to the bottom end of the riprap tube +.>
，
The method comprises the steps of carrying out a first treatment on the surface of the Will->
And->
A check is made to correct the laser rangefinder.
5. The method for correcting the length of a stone throwing pipe of a platform levelling ship according to claim 2, characterized in that in step S31, the construction length of the stone throwing pipe is set
。
6. The method for correcting the length of the stone throwing pipe of the platform leveling ship according to claim 1, wherein in the step S1, a temperature measuring instrument is further installed on the outer wall of the lower part of the stone throwing pipe, and the temperature measuring instrument is in communication connection with a measurement and control system;
in step S31, the measurement and control system reads the temperature of the construction water area where the stone throwing pipe is positioned through a temperature measuring instrument
；
In step S32, the measurement and control system monitors the real-time measurement result of the laser rangefinder
In this case, the real-time measurement result of the temperature measuring device is also monitored simultaneously +.>
To calculate the theoretical length variation of the riprap tube in real time according to formula (1)>
The method comprises the steps of carrying out a first treatment on the surface of the If->
And->
If the difference value between the two is over-limit, the measurement and control system automatically gives an abnormal alarm to prompt an operator to check whether the laser range finder and the temperature measuring instrument work normally or not, and the system is re-used>
、/>
To re-resolve +.>
And
the method comprises the steps of carrying out a first treatment on the surface of the If->
And->
The difference between the two is not exceeded, the measurement and control system is according to +.>
And->
To determine whether to issue a construction length of the riprap pipe +.>
Prompting correction;
in the formula (1), the components are as follows,
is the linear expansion coefficient of the riprap pipe.
7. The method for correcting the length of a stone throwing pipe of a platform levelling ship according to claim 1 or 6, wherein in step S32, when the measurement and control system automatically sends out whether to construct the length of the stone throwing pipe
When the correction prompt is carried out, the correction value is automatically calculated and displayed, and an operator comprehensively researches and judges whether the construction length of the riprap pipe is +.>
And (5) performing correction.
8. The method for correcting the length of a stone throwing pipe of a platform-type leveling ship according to claim 1, wherein in step S1, a GPS positioning device is installed at the top end of the stone throwing pipe;
in step S31, the position of the riprap pipe and the construction elevation of the top end thereof are obtained by the GPS positioning device, and the construction length of the riprap pipe is combined
And (3) obtaining the construction elevation of the bottom end of the stone throwing pipe, and accordingly adjusting the extending length of the leveling scraper which is slidably connected to the bottom end of the stone throwing pipe, so as to perform paving and leveling operation on the crushed stone foundation bed.
9. The method for correcting the length of the stone throwing pipe of the platform leveling ship according to claim 6, wherein the laser range finder and the temperature measuring instrument are both arranged in a protection box, the protection box is fixedly arranged on a damping support, and the damping support is connected with the stone throwing pipe in a welding mode; the protection box and the damping support are made of stainless steel materials.
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