Installation and construction technology of steel gate for water conservancy and hydropower projects

Abstract

The present invention relates to the technical field of gate installation, and in particular to an installation and construction process for a steel gate of a water conservancy and hydropower project, the process comprising lifting a steel gate for static balance detection, determining the adjustment of the lifting point position of the steel gate according to the inclination of the lifting point plane of the steel gate; detecting the curvature of the wall of a gate pier close to the steel gate and the annual water flow of a river where the steel gate is to be installed to determine the detection position of the wall; detecting the deformation of a waterstop and the water flow impact force of the steel gate to be installed and determining the detection base point of the waterstop according to the water flow impact force and the deformation; determining the adjustment of the thickness of the waterstop according to the pressure of the waterstop under the corresponding base point; detecting the lifting and lowering stability of the steel gate, and determining the adjustment of the steel gate installation process according to the lifting and lowering stability; the present invention improves the installation efficiency of steel gates by improving the accuracy of installation and construction control of steel gates of water conservancy and hydropower projects.

Description

Technical Field

[0001] The invention relates to the technical field of gate installation, and in particular to an installation and construction process of a steel gate of a water conservancy and hydropower project. Background Art

[0002] The gate is a control facility used to close and open the discharge channel. The gate is an important part of hydraulic structures and can be used to intercept water flow, control water level, adjust flow, discharge sediment and floating objects, etc. The manufacturing and installation accuracy of the gate should be strictly controlled. When the gate boundary flow pattern is complex, the gate is often unevenly stressed. The existing gate water stop strips are simply fixed and wrapped around the outside of the gate plate. In the long-term up and down sliding and the impact of water flow, the water stop strips are often worn out or even fall off.

[0003] Chinese patent application publication number: CN109469023B discloses a channel gate for water conservancy projects, including a gate body and a support seat, and also including two deicing devices, which are respectively arranged on the front and rear sides of the support seat, and the two deicing devices each include a driving motor, a rotating screw and a deicing head, the driving motor is located on the top surface of the support seat, the top end of the rotating screw is connected to the driving motor, and the deicing head sleeve is arranged on the rotating screw. The installation method includes the following steps: (1) construction preparation; (2) installation of the channel gate; (3) installation of the winch; (4) trial operation. The invention has a simple structure. The design of the support seat can make the installation of the gate body more convenient, and the structure of the channel gate is more solid and reliable. At the same time, through the design of the deicing devices on both sides of the gate body, when ice appears on the surface of the channel gate, the two sides of the channel gate are deiced, so that the channel gate can be used normally in the cold icing season, making the use of the channel gate more convenient.

[0004] It can be seen that the existing technology has the problem of insufficiently precise control over the installation and construction process of steel gates for water conservancy and hydropower projects, resulting in low installation efficiency of steel gates for water conservancy and hydropower projects. Summary of the invention

[0005] To this end, the present invention provides an installation and construction process for steel gates of water conservancy and hydropower projects, so as to overcome the problem in the prior art that the installation and construction process of steel gates of water conservancy and hydropower projects is not accurately controlled, resulting in low installation efficiency of steel gates of water conservancy and hydropower projects.

[0006] To achieve the above object, the present invention provides an installation and construction process for a steel gate of a water conservancy and hydropower project, comprising:

[0007] Lift the steel gate for static balance detection, and determine the adjustment of the lifting point position of the steel gate according to the inclination of the lifting point plane of the steel gate;

[0008] Determine the inspection position of the wall by inspecting the curvature of the wall on the side of the gate pier close to the steel gate and the annual water flow of the river where the steel gate is to be installed, and preliminarily determine the thickness of the water stop according to the inspection position and the length of the steel gate;

[0009] Detecting the deformation of the water stop and the water flow impact force of the steel gate to be installed, and determining the detection base point of the water stop according to the water flow impact force and the deformation;

[0010] Determine the adjustment of the waterstop thickness according to the pressure of the waterstop under the corresponding base point;

[0011] Detecting the lifting and lowering stability of the steel gate, and determining the adjustment of the steel gate installation process according to the lifting and lowering stability;

[0012] When the thickness of the water stop is preliminarily determined, the position of the average value of the wall curvature is determined as the detection position under the condition that the difference between the maximum and minimum values ​​of the annual water flow of the river where the steel gate is to be installed is greater than or equal to the preset difference, or the position of the minimum value of the wall curvature is determined as the detection position under the condition that the difference between the maximum and minimum values ​​of the annual water flow of the river where the steel gate is to be installed is less than the preset difference;

[0013] When the position of the average value of the wall curvature is determined as the detection position, the thickness A1 of the water stop strip is calculated by the following formula and is set: ;

[0014] When the position of the minimum wall curvature is determined as the detection position, the thickness A2 of the water stop is calculated by the following formula and is set: ;

[0015] Among them, X1 represents the horizontal distance between the positions of the average curvature on both sides of the gate pier, X2 represents the horizontal distance between the positions of the minimum curvature on both sides of the gate pier, Y represents the length of the steel gate, and R represents three-fifths of the maximum deformation of the waterstop.

[0016] Further, when determining the adjustment of the hanging point position of the steel gate according to the inclination of the hanging point plane of the steel gate, the adjustment of the hanging point position of the steel gate is determined under the condition that the inclination of the hanging point plane of the steel gate is greater than or equal to a preset inclination.

[0017] Furthermore, when it is determined to adjust the position of the hanging point of the steel gate, the position of the hanging point is adjusted in a direction opposite to the inclination direction of the steel gate until the inclination of the steel gate is less than a preset inclination.

[0018] Furthermore, when determining the detection base point of the waterstop according to the water flow impact force and the deformation amount, under the condition that the impact force of the water flow on the steel gate is greater than or equal to the preset impact force, the position where the lateral deformation amount of the waterstop is the smallest is determined as the detection base point, or under the condition that the impact force of the water flow on the steel gate is less than the preset impact force, the position where the lateral deformation amount of the waterstop is the largest is determined as the detection base point.

[0019] Further, when the position where the lateral deformation of the waterstop is the smallest is determined as the detection base point, it is determined that the thickness of the waterstop is adjusted using the first adjustment coefficient under the condition that the longitudinal deformation of the waterstop is greater than or equal to the preset longitudinal deformation.

[0020] Further, when the position where the lateral deformation of the waterstop is the largest is determined as the detection base point, the thickness of the waterstop is adjusted using the second adjustment coefficient under the condition that the friction between the waterstop and the pier wall is greater than or equal to the preset friction.

[0021] Further, when the adjustment of the steel gate installation process is determined according to the take-off and lowering stability, the steel gate installation process is adjusted under the condition that the take-off and lowering stability of the steel gate is less than a preset stability.

[0022] Furthermore, when the installation process of the steel gate is adjusted, it is determined that the preset inclination is adjusted with the third adjustment coefficient under the condition that the difference between the lifting and lowering stability of the steel gate and the preset stability is less than or equal to the preset difference, or it is determined that the power of the hydraulic rod is adjusted with the fourth adjustment coefficient under the condition that the difference between the lifting and lowering stability of the steel gate and the preset stability is greater than the preset difference.

[0023] Furthermore, the lifting and lowering stability of the steel gate is calculated by the following formula:

[0024] Among them, Y represents the take-off and lowering stability of the steel gate, X represents the vertical distance between the two sides of the steel gate during the take-off and lowering process, X0 represents the preset vertical distance, T represents the difference in the take-off and lowering time of the steel gate, T0 represents the preset difference, and α and β are normalization coefficients.

[0025] Compared with the prior art, the beneficial effect of the present invention lies in that, the present invention first analyzes the inclination of the steel gate suspended in mid-air. When the inclination of the steel gate is greater than the preset inclination, the lifting point of the steel gate needs to be adjusted to avoid the steel gate being unable to be embedded in the gate pier during installation due to the inclination of the steel gate during lifting. At the same time, by determining the adjustment of the lifting point position of the steel gate according to the inclination direction of the steel gate, the accuracy of the installation construction control of the steel gate of the water conservancy and hydropower project is improved, thereby improving the installation efficiency of the steel gate of the water conservancy and hydropower project.

[0026] Furthermore, the present invention detects the curvature of the wall of the pier close to the steel gate and the annual water flow of the river where the steel gate is to be installed to preliminarily determine the thickness of the waterstop, and subtracts the length of the steel gate from the horizontal distance of the detection positions of the walls on both sides of the pier and adds the deformation of the waterstop to ensure the sealing of the steel gate. In addition, by analyzing the difference between the maximum and minimum annual water flow of the river where the steel gate is to be installed, the phenomenon of large wear of the waterstop due to large difference in river flow is avoided, and the accuracy of installation and construction control of steel gates in water conservancy and hydropower projects is improved by improving the analysis of the distance between the steel gate and the pier wall.

[0027] Furthermore, the present invention determines the detection base point of the waterstop by analyzing the impact force of the water flow on the steel gate to be installed. When the impact force of the water flow is greater than or equal to the preset impact force, the sealing of the waterstop is given priority, and the position where the lateral deformation of the waterstop is the smallest is used as the detection base point. When the impact force of the water flow is less than the preset impact force, the wear of the waterstop is given priority, and the position where the lateral deformation of the waterstop is the largest is used as the detection base point. The above method improves the accuracy of installation and construction control of steel gates in water conservancy and hydropower projects.

[0028] Furthermore, the present invention determines the sealing performance of the steel gate by analyzing the longitudinal deformation of the waterstop with the position where the lateral deformation of the waterstop is the smallest as the detection base point. When the longitudinal deformation of the waterstop is greater than or equal to the preset longitudinal deformation, it is necessary to increase the thickness of the waterstop with a first adjustment coefficient to avoid a large outflow of water when the steel gate blocks the water flow, thereby improving the accuracy of installation and construction control of steel gates in water conservancy and hydropower projects.

[0029] Furthermore, the present invention determines the degree of wear of the waterstop by analyzing the friction between the waterstop and the pier wall with the position where the lateral deformation of the waterstop is the largest as the detection base point. When the friction is greater than or equal to the preset friction, it means that the degree of wear of the waterstop is large, and the thickness of the waterstop needs to be reduced by a second adjustment coefficient to avoid the phenomenon that the waterstop has a short service life due to large wear, thereby improving the accuracy of installation and construction control of steel gates in water conservancy and hydropower projects.

[0030] Furthermore, the present invention determines the adjustment of the steel gate installation process by analyzing the lifting and lowering stability of the steel gate during operation. When the lifting and lowering stability is less than the preset stability, it means that the movement state of the steel gate during the lifting and lowering process is unstable, and the steel gate installation process needs to be adjusted. The above method improves the accuracy of installation and construction control of steel gates in water conservancy and hydropower projects.

[0031] Furthermore, the present invention determines the adjustment method by comparing the difference between the lifting and lowering stability of the steel gate and the preset stability with the preset difference. When the difference is less than or equal to the preset difference, it means that the steel gate is tilted during the lifting and lowering process, and it is determined to increase the preset inclination by the third adjustment coefficient. When the difference is greater than the preset difference, it means that the time difference in the lifting and lowering process of the steel gate is large, especially the time consumed for the lifting process of the steel gate is long due to the impact force of the water flow during the lifting process of the steel gate, and it is necessary to increase the power of the hydraulic rod with the fourth adjustment coefficient. The above method improves the accuracy of installation and construction control of steel gates in water conservancy and hydropower projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The present invention is a flowchart of the installation and construction process of a steel gate for a water conservancy and hydropower project according to an embodiment of the present invention;

[0033] Figure 2 A flowchart of the installation construction process for adjusting the position of the lifting point of a steel gate of a water conservancy and hydropower project according to an embodiment of the present invention;

[0034] Figure 3 The present invention provides a workflow diagram for determining the adjustment method of the steel gate installation process for the installation construction process of the steel gate of the water conservancy and hydropower project according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0037] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0038] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] See also Figure 1-Figure 3 As shown, Figure 1 The present invention is a flowchart of the installation and construction process of a steel gate for a water conservancy and hydropower project according to an embodiment of the present invention; Figure 2 A flowchart of the installation construction process for adjusting the position of the lifting point of a steel gate of a water conservancy and hydropower project according to an embodiment of the present invention; Figure 3 The present invention provides a workflow diagram for determining the adjustment method of the steel gate installation process for the installation construction process of the steel gate of the water conservancy and hydropower project according to an embodiment of the present invention.

[0040] The installation construction process of the steel gate of the water conservancy and hydropower project according to the embodiment of the present invention includes:

[0041] Step S1, lifting the steel gate for static balance detection, and determining the adjustment of the lifting point position of the steel gate according to the inclination of the lifting point plane of the steel gate;

[0042] Step S2, detecting the curvature of the wall of the gate pier close to the steel gate and the annual water flow of the river where the steel gate is to be installed to determine the detection position of the wall, and preliminarily determining the thickness of the water stop according to the detection position and the length of the steel gate;

[0043] Step S3, detecting the deformation amount of the water stop strip and the water flow impact force of the steel gate to be installed, and determining the detection base point of the water stop strip according to the water flow impact force and the deformation amount;

[0044] Step S4, determining the adjustment of the thickness of the waterstop according to the pressure of the waterstop under the corresponding base point;

[0045] Step S5, detecting the lifting and lowering stability of the steel gate, and determining the adjustment of the steel gate installation process according to the lifting and lowering stability.

[0046] Specifically, when the steel gate is hoisted for static balance detection, the adjustment of the hoisting point position of the steel gate is determined according to the comparison result between the inclination D of the hoisting point plane of the steel gate and the preset inclination D0;

[0047] When D≥D0, the position of the hanging point of the steel gate is adjusted;

[0048] When D<D0, the position of the lifting point of the steel gate is not adjusted;

[0049] The preset value of the inclination D0 is set to one thousandth of the gate height, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0050] The inclination in the embodiment of the present invention is the difference between the highest point of the hanging point plane when the gate is inclined and the lowest point of the hanging point plane when the gate is inclined.

[0051] Specifically, when adjusting the position of the hanging point of the steel gate, the position of the hanging point is adjusted in the direction opposite to the inclination direction of the steel gate until the inclination of the steel gate is less than a preset inclination.

[0052] Specifically, the present invention first analyzes the inclination of the steel gate suspended in mid-air. When the inclination of the steel gate is greater than the preset inclination, the lifting point of the steel gate needs to be adjusted to avoid the steel gate being unable to be embedded in the gate pier during installation due to the inclination of the steel gate when it is lifted. At the same time, by determining the adjustment of the lifting point position of the steel gate according to the inclination direction of the steel gate, the accuracy of the installation construction control of the steel gate of the water conservancy and hydropower project is improved, thereby improving the installation efficiency of the steel gate of the water conservancy and hydropower project.

[0053] Specifically, when the thickness of the water stop is preliminarily determined, the detection position is determined according to the comparison result between the difference Q between the maximum and minimum annual water flow of the river where the steel gate is to be installed and the preset difference Q0;

[0054] When Q ≥ Q0, the position of the average value of the wall curvature is determined as the detection position;

[0055] When Q<Q0, the position of the minimum wall curvature is determined as the detection position;

[0056] The preset difference Q0 value is one fiftieth of the minimum annual water flow of the river, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0057] Specifically, when the position of the average value of the wall curvature is determined as the detection position, the thickness A1 of the water stop strip is calculated by the following formula and is set: ;

[0058] When the position of the minimum wall curvature is determined as the detection position, the thickness A2 of the water stop is calculated by the following formula and is set: ;

[0059] Among them, X1 represents the horizontal distance between the positions of the average value of curvature on both sides of the gate pier, X2 represents the horizontal distance between the positions of the minimum value of curvature on both sides of the gate pier, Y represents the length of the steel gate, and R represents three-fifths of the maximum deformation of the waterstop. However, the above values ​​are not limited to this, and technical personnel in this field can also adjust the values ​​according to actual needs.

[0060] The waterstop strip in the embodiment of the present invention is preferably a P-type rubber waterstop strip.

[0061] Specifically, the present invention detects the curvature of the wall of the pier close to the steel gate and the annual water flow of the river where the steel gate is to be installed to preliminarily determine the thickness of the waterstop, and subtracts the length of the steel gate from the horizontal distance of the detection positions of the walls on both sides of the pier and adds the deformation of the waterstop to ensure the sealing of the steel gate. In addition, by analyzing the difference between the maximum and minimum annual water flow of the river where the steel gate is to be installed, the phenomenon of large wear of the waterstop due to large difference in river flow is avoided, and the accuracy of installation and construction control of steel gates in water conservancy and hydropower projects is improved by improving the analysis of the distance between the steel gate and the pier wall.

[0062] Specifically, when determining the detection base point of the water stop, the detection base point of the water stop is determined according to the comparison result of the impact force F of the water flow on the steel gate and the preset impact force F0;

[0063] When F≥F0, the position where the lateral deformation of the waterstop is the smallest is determined as the detection base point;

[0064] When F<F0, the position where the lateral deformation of the waterstop is the largest is determined as the detection base point;

[0065] Among them, the value of the preset impact force F0 is the historical average value of the water flow impact force exerted on the waterstop strip of the same thickness when it is displaced, but the above value is not limited to this, and technical personnel in this field can also adjust the value according to actual needs.

[0066] Specifically, the present invention determines the detection base point of the waterstop by analyzing the impact force of the water flow on the steel gate to be installed. When the impact force of the water flow is greater than or equal to the preset impact force, the sealing of the waterstop is given priority, and the position where the lateral deformation of the waterstop is the smallest is used as the detection base point. When the impact force of the water flow is less than the preset impact force, the wear of the waterstop is given priority, and the position where the lateral deformation of the waterstop is the largest is used as the detection base point. The above method improves the accuracy of installation and construction control of steel gates of water conservancy and hydropower projects.

[0067] Specifically, when the position where the transverse deformation of the waterstop is the smallest is determined as the detection base point, the adjustment of the thickness of the waterstop is determined according to the comparison result of the longitudinal deformation G of the waterstop with the preset longitudinal deformation G0;

[0068] When G≥G0, it is determined that the thickness of the water stop is adjusted in the first adjustment mode;

[0069] When G<G0, make sure not to adjust the thickness of the waterstop;

[0070] Among them, the value of the preset longitudinal deformation G0 is the maximum longitudinal deformation of the waterstop strip with the same thickness without displacement, but the above value is not limited to this, and technical personnel in this field can also adjust the value according to actual needs.

[0071] The lateral deformation of the waterstop strip in the embodiment of the present invention is the deformation perpendicular to the direction of the steel gate, and the longitudinal deformation of the waterstop strip is the deformation parallel to the direction of the steel gate.

[0072] Specifically, the present invention determines the sealing performance of the steel gate by analyzing the longitudinal deformation of the waterstop with the position where the lateral deformation of the waterstop is the smallest as the detection base point. When the longitudinal deformation of the waterstop is greater than or equal to the preset longitudinal deformation, it is necessary to increase the thickness of the waterstop with a first adjustment coefficient to avoid a large outflow of water when the steel gate blocks the water flow, thereby improving the accuracy of installation and construction control of steel gates in water conservancy and hydropower projects.

[0073] Specifically, when it is determined to adjust the thickness of the waterstop strip in the first adjustment manner, it is determined to adjust the thickness of the waterstop strip in the first adjustment coefficient K1.

[0074] Specifically, the first adjustment coefficient K1 is calculated and set by the following formula: ;

[0075] The thickness of the waterstop adjusted by the first adjustment method is set to Ai'=K1×Ai, i=1,2.

[0076] Specifically, when the position where the lateral deformation of the waterstop is the largest is determined as the detection base point, the adjustment of the thickness of the waterstop is determined according to the comparison result of the friction force H between the waterstop and the gate pier wall and the preset friction force H0;

[0077] When H≥H0, it is determined that the thickness of the water stop is adjusted in the second adjustment mode;

[0078] When H<H0, it is determined that the thickness of the waterstop should not be adjusted;

[0079] Among them, the preset friction force H0 value is the maximum value of the friction force between the waterstop of the same thickness and the gate pier under the condition of qualified service life, but the above value is not limited to this, and technical personnel in this field can also adjust the value according to actual needs.

[0080] The friction force in the embodiment of the present invention can be measured by the following method: a metal sheet is clamped between a steel gate and a gate pier wall, and the force used to completely pull out the metal sheet is the friction force between the steel gate and the gate pier wall.

[0081] Specifically, when it is determined to adjust the thickness of the waterstop strip in the second adjustment manner, it is determined to adjust the thickness of the waterstop strip in the second adjustment coefficient K2.

[0082] Specifically, the second adjustment coefficient K2 is calculated and set by the following formula: ;

[0083] The thickness of the waterstop adjusted by the second adjustment method is set to Ai''=K2×Ai, i=1,2.

[0084] Specifically, the present invention determines the degree of wear of the waterstop by analyzing the friction between the waterstop and the pier wall with the position where the lateral deformation of the waterstop is the largest as the detection base point. When the friction is greater than or equal to the preset friction, it means that the degree of wear of the waterstop is large, and the thickness of the waterstop needs to be reduced by a second adjustment coefficient to avoid the phenomenon that the service life of the waterstop is shortened due to large wear, thereby improving the accuracy of installation and construction control of steel gates in water conservancy and hydropower projects.

[0085] Specifically, when determining the adjustment of the steel gate installation process, the adjustment of the steel gate installation process is determined according to the comparison result of the take-off and lowering stability Y of the steel gate and the preset stability Y0;

[0086] When Y≥Y0, it is determined that no adjustment is required during the installation of the steel gate;

[0087] When Y<Y0, determine to adjust the installation process of the steel gate;

[0088] The preset stability value Y0 is set to 0.9, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0089] Specifically, the lifting and lowering stability Y of the steel gate is calculated by the following formula: ;

[0090] Among them, X represents the vertical distance between the two sides of the steel gate during the taking-off and lowering process, X0 represents the preset vertical distance, and its value is set to one thousandth of the thickness of the steel gate; T represents the difference in the taking-off and lowering time of the steel gate, T0 represents the preset difference, and its value is set to one hundredth of the landing time of the steel gate, α and β are normalization coefficients, but the above values ​​are not limited to this, and technical personnel in this field can also adjust the values ​​according to actual needs.

[0091] Specifically, the present invention determines the adjustment of the steel gate installation process by analyzing the lifting and lowering stability of the steel gate during operation. When the lifting and lowering stability is less than the preset stability, it means that the movement state of the steel gate is unstable during the lifting and lowering process, and the steel gate installation process needs to be adjusted. The above method improves the accuracy of installation and construction control of steel gates in water conservancy and hydropower projects.

[0092] Specifically, when determining to adjust the installation process of the steel gate, the adjustment method of the installation process of the steel gate is determined according to the comparison result of the difference △Y between the take-off and lowering stability of the steel gate and the preset stability and the preset difference △Y0;

[0093] When △Y≤△Y0, it is determined that the installation process of the steel gate is adjusted in the third adjustment mode;

[0094] When △Y>△Y0, it is determined to adjust the installation process of the steel gate in the fourth adjustment mode;

[0095] The preset difference △Y0 is set to 0.15, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0096] Specifically, when it is determined to adjust the installation process of the steel gate in the third adjustment mode, it is determined to adjust the preset inclination in the third adjustment coefficient K3;

[0097] When it is determined to adjust the steel gate installation process in the fourth adjustment mode, it is determined to adjust the hydraulic rod power W in accordance with the fourth adjustment coefficient K4.

[0098] Specifically, the third adjustment coefficient K3 is calculated and set by the following formula: ;

[0099] The fourth adjustment coefficient K4 is calculated and set by the following formula: ;

[0100] The adjusted preset inclination is set to D0'=K3×D0;

[0101] The adjusted hydraulic rod power W is set to W'=K4×W.

[0102] Specifically, the present invention determines the adjustment method by comparing the difference between the lifting and lowering stability of the steel gate and the preset stability with the preset difference. When the difference is less than or equal to the preset difference, it means that the steel gate is tilted during the lifting and lowering process, and it is determined to increase the preset inclination by the third adjustment coefficient. When the difference is greater than the preset difference, it means that the time difference of the lifting and lowering process of the steel gate is large, especially the time consumed for the lifting process of the steel gate is long due to the impact force of the water flow during the lifting process of the steel gate, and it is necessary to increase the power of the hydraulic rod with the fourth adjustment coefficient. The above method improves the accuracy of installation and construction control of steel gates in water conservancy and hydropower projects.

[0103] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0104] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A construction process for installing a steel gate for a water conservancy and hydropower project, characterized in that: include: Lift the steel gate for static balance detection, and determine the adjustment of the lifting point position of the steel gate according to the inclination of the lifting point plane of the steel gate; Determine the inspection position of the wall by inspecting the curvature of the wall on the side of the gate pier close to the steel gate and the annual water flow of the river where the steel gate is to be installed, and preliminarily determine the thickness of the water stop according to the inspection position and the length of the steel gate; Detecting the deformation of the water stop and the water flow impact force of the steel gate to be installed, and determining the detection base point of the water stop according to the water flow impact force and the deformation; Determine the adjustment of the waterstop thickness according to the pressure of the waterstop under the corresponding base point; Detecting the lifting and lowering stability of the steel gate, and determining the adjustment of the steel gate installation process according to the lifting and lowering stability; When the thickness of the water stop is preliminarily determined, the position of the average value of the wall curvature is determined as the detection position under the condition that the difference between the maximum and minimum values ​​of the annual water flow of the river where the steel gate is to be installed is greater than or equal to the preset difference, or the position of the minimum value of the wall curvature is determined as the detection position under the condition that the difference between the maximum and minimum values ​​of the annual water flow of the river where the steel gate is to be installed is less than the preset difference; When the position of the average value of the wall curvature is determined as the detection position, the thickness A1 of the water stop strip is calculated by the following formula and is set: ; When the position of the minimum wall curvature is determined as the detection position, the thickness A2 of the water stop is calculated by the following formula and is set: ; Among them, X1 represents the horizontal distance between the positions of the average curvature on both sides of the gate pier, X2 represents the horizontal distance between the positions of the minimum curvature on both sides of the gate pier, Y represents the length of the steel gate, and R represents three-fifths of the maximum deformation of the waterstop.

2. The installation and construction process of the steel gate of a water conservancy and hydropower project according to claim 1 is characterized in that: When the adjustment of the hanging point position of the steel gate is determined based on the inclination of the hanging point plane of the steel gate, the adjustment of the hanging point position of the steel gate is determined under the condition that the inclination of the hanging point plane of the steel gate is greater than or equal to a preset inclination.

3. The installation and construction process of the steel gate of a water conservancy and hydropower project according to claim 2 is characterized in that: When it is determined to adjust the position of the hanging point of the steel gate, the position of the hanging point is adjusted in the direction opposite to the inclination direction of the steel gate until the inclination of the steel gate is less than the preset inclination.

4. The installation and construction process of the steel gate of a water conservancy and hydropower project according to claim 3 is characterized in that: When determining the detection base point of the waterstop according to the water flow impact force and the deformation amount, under the condition that the impact force of the water flow on the steel gate is greater than or equal to the preset impact force, the position where the lateral deformation amount of the waterstop is the smallest is determined as the detection base point; or under the condition that the impact force of the water flow on the steel gate is less than the preset impact force, the position where the lateral deformation amount of the waterstop is the largest is determined as the detection base point.

5. The installation and construction process of the steel gate of a water conservancy and hydropower project according to claim 4 is characterized in that: When the position where the lateral deformation of the waterstop is the smallest is determined as the detection base point, the thickness of the waterstop is adjusted using the first adjustment coefficient under the condition that the longitudinal deformation of the waterstop is greater than or equal to the preset longitudinal deformation.

6. The installation and construction process of the steel gate of a water conservancy and hydropower project according to claim 5 is characterized in that: When the position where the lateral deformation of the waterstop is the largest is determined as the detection base point, the thickness of the waterstop is adjusted using the second adjustment coefficient under the condition that the friction between the waterstop and the pier wall is greater than or equal to the preset friction.

7. The installation and construction process of the steel gate of a water conservancy and hydropower project according to claim 5 or 6 is characterized in that: When the adjustment of the steel gate installation process is determined based on the take-off and lowering stability, the steel gate installation process is adjusted under the condition that the take-off and lowering stability of the steel gate is less than the preset stability.

8. The installation and construction process of the steel gate of a water conservancy and hydropower project according to claim 7 is characterized in that: When the installation process of the steel gate is adjusted, the preset inclination is adjusted using the third adjustment coefficient under the condition that the difference between the lifting and lowering stability of the steel gate and the preset stability is less than or equal to the preset difference, or the hydraulic rod power is adjusted using the fourth adjustment coefficient under the condition that the difference between the lifting and lowering stability of the steel gate and the preset stability is greater than the preset difference.

9. The installation and construction process of the steel gate of a water conservancy and hydropower project according to claim 7 is characterized in that: The lifting and lowering stability of the steel gate is calculated by the following formula: ; Among them, Y represents the take-off and lowering stability of the steel gate, X represents the vertical distance between the two sides of the steel gate during the take-off and lowering process, X0 represents the preset vertical distance, T represents the difference in the take-off and lowering time of the steel gate, T0 represents the preset difference, and α and β are normalization coefficients.

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