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CN-122013731-A - Dam construction method without interception construction

CN122013731ACN 122013731 ACN122013731 ACN 122013731ACN-122013731-A

Abstract

The invention relates to the technical field of non-interception construction, in particular to a dam construction method without interception construction, which comprises the following steps: and acquiring intersection points of a river channel water line and a river bed section line, identifying a span section by combining the coordinates of a track center line and truss nodes, correcting a track axis, matching a drilling number with a track mileage point, and judging a construction sequence according to the elevation and drilling state of a rock layer. According to the river crossing structure layout process, the river crossing structure layout process is matched with the river bed form and structure stress state, the control track is consistent with the dam axis through shaft judgment and position correction according to the track center line, and the situation of deviation of the river crossing structure layout and dislocation of the drilling position is reduced according to the matching of the drilling number and the track mileage point.

Inventors

  • Ye Shaofang
  • YE JIANSHENG
  • YE JIANXIAO

Assignees

  • 丽水市鑫能电力投资有限公司

Dates

Publication Date
20260512
Application Date
20260319

Claims (12)

  1. 1. The dam construction method without interception construction is characterized by comprising the following steps: S1, acquiring a river channel water level line, a river bed section line, a river bank side line and a design dam axis, extracting intersection points of the river channel water level line and the river bed section line, connecting water passing boundary lines, and dividing a water passing corridor range to obtain a water passing corridor range record; S2, based on the water passage range record, acquiring a track center line, truss node coordinates and bearing values, shield machine weight and track contact point coordinates, screening stress nodes according to an adjacent relation, and identifying available span sections to obtain a span layout record of the viaduct; S3, based on the span layout record of the viaduct, acquiring the track center line of the viaduct, comparing the track centering threshold value, judging the centering, correcting the position of the track center line of the viaduct, and acquiring the track centering state record; S4, acquiring a basic drilling number and a overpass track mileage point based on the track counter shaft state record, and matching the basic drilling number sequence with the overpass track mileage point to acquire a drilling center positioning sequence; And S5, based on the drilling center positioning sequence, extracting the top surface elevation of the hard rock stratum, the elevation of the orifice, the drilling depth reading and the pushing oil cylinder pressure reading, judging the drilling depth interval and the resistance interval, and screening corresponding hole sites to obtain a dam foundation construction sequence.
  2. 2. The dam construction method without intercepting construction according to claim 1, wherein the water passage range record comprises water passage starting point coordinates, water passage ending point coordinates, water passage boundary inflection point coordinates, water passage width parameters and water passage area parameters, the viaduct span layout record comprises span starting and stopping mileage, available span length, support column layout coordinates, stress node number sets and span section numbers, the track centering state record comprises track center line offset distance, track center line correction coordinates, track centering judging results, track centering threshold parameters and track centering state identification, the drilling center positioning sequence comprises drilling number sets, drilling center plane coordinates, drilling track mileage identifications, drilling positioning sequence identifications and drilling center elevation parameters, and the dam foundation construction sequence comprises construction hole position numbers, hole position construction state identifications, drilling depth interval identifications, resistance change interval identifications and foundation construction stage numbers.
  3. 3. The method according to claim 1, wherein the water passage range is a boundary range of a river water area where river water passes during construction, which is determined according to a spatial relationship between a river water line, a river bed section line and a river bank side line; the stress node refers to a truss node position which is adjacent to a shield machine crawler contact point in the steel bridge structure and is used for actually bearing equipment load transmission.
  4. 4. The method for constructing a dam without intercepting construction according to claim 1, wherein the position of the track center line of the viaduct is determined according to the offset distance between the track center line and the designed dam axis; The drilling depth interval refers to a drilling stage depth range formed after drilling depth reading is judged according to orifice elevation and hard rock stratum top surface elevation.
  5. 5. The method for constructing a dam without intercepting construction according to claim 1, wherein the specific steps of S1 are as follows: S101, acquiring a river water level line and a river bed section line, detecting the intersection state of the river water level line and the river bed section line, extracting intersection point coordinates, collecting according to the sequence of section mileage, and simultaneously writing a corresponding table of the section mileage and the intersection point coordinates to obtain a water level section intersection point set; s102, extracting intersection coordinates of adjacent sections and mileage segments based on the water level section intersection set, connecting fold lines according to mileage sequence, extracting line segment direction parameters, detecting and removing fold line self-intersection and repeated nodes, and obtaining a water-passing boundary line; and S103, acquiring a river bank boundary line and a designed dam axis based on the water passing boundary line, extracting a water passing boundary line and a river bank boundary line enclosing area, splitting the area according to a communication relation, searching an area intersected with the designed dam axis, extracting an outer boundary node sequence, and associating an area number with a space boundary position to obtain a water passage range record.
  6. 6. The method for constructing a dam without intercepting construction according to claim 1, wherein the specific steps of S2 are as follows: s201, acquiring a temporary steel bridge deck track center line, truss node coordinates and vertical shield machine track contact point coordinates based on the water passage channel range record, searching adjacent truss nodes according to track center line mileage gathering track contact points, and associating track contact point numbers with truss node numbers to obtain a stress node sequence; S202, based on the stress node sequence, acquiring a truss node design bearing value and the weight of the whole vertical shield tunneling machine, sequentially distributing the weight of the whole vertical shield tunneling machine to truss nodes according to the stress node sequence, converting the node to share the load, comparing the node sharing load with the truss node design bearing value, and eliminating unavailable nodes to obtain an available span section; s203, based on the available span section, calling the center line and truss node coordinates of the temporary steel bridge deck track, extracting the truss node coordinates of span end points, solving the plane locating points of the corresponding support columns, and associating the span numbers with the support column layout positions to obtain the steel bridge span layout records.
  7. 7. The method for constructing a dam without intercepting construction according to claim 1, wherein the specific step of S3 is: S301, based on the span layout record of the viaduct, acquiring a center line of the viaduct track and a designed dam axis, sampling point coordinates along the center line of the viaduct track according to mileage, performing vertical search on the designed dam axis for each sampling point, extracting corresponding point coordinates, measuring the distance between the sampling point and the corresponding point, and writing a mileage and distance correspondence table to obtain a track wheelbase sequence; S302, based on the track wheelbase sequence, acquiring a track centering reference value, comparing the distance with the track centering reference value one by one, outputting a centering conclusion code, and synchronously writing a corresponding table of mileage and the centering conclusion code to acquire a centering judgment sequence; S303, calling the track center line of the viaduct based on the axle judging sequence, extracting a non-consistent section of the axle conclusion code, measuring the offset direction vector, applying the translation amount according to the section, updating the center line coordinate, writing the section number and the corrected center line index, and obtaining the track axle state record.
  8. 8. The dam construction method without interception construction according to claim 7, wherein in the process of measuring the distance between the sampling point and the corresponding point, reading the linear distance between the coordinates of the sampling point and the coordinates of the corresponding point along a retrieval path, and writing a mileage and distance correspondence table according to a mileage sequence to obtain the track wheelbase sequence; And in the process of comparing the strip-by-strip comparison distance with the track pair axle reference value and outputting the pair axle conclusion code, sequentially reading the distance in the track pair axle base sequence and comparing the distance with the track pair axle reference value, correspondingly writing the differential pair axle conclusion code into the differential comparison relation, and writing the mileage and pair axle conclusion code corresponding table into the mileage sequence to obtain the pair axle conclusion code.
  9. 9. The method for constructing a dam without intercepting construction according to claim 1, wherein the specific step of S4 is: S401, acquiring a basic drilling number and a steel bridge track mileage point based on the track shaft status record, searching a corresponding mileage point serial number according to the basic drilling number sequence, removing missing items, and writing in a corresponding table of the basic drilling number and the mileage point serial number to obtain a serial number mileage serial number table; S402, acquiring a basic drilling arrangement distance based on the serial number odometer, extracting the mileage position of the viaduct track according to the mileage point serial number, writing in a basic drilling serial number row, and associating the basic drilling serial number with the mileage position of the viaduct track to obtain a drilling mileage position sequence; s403, calling a track mileage point coordinate set of the viaduct based on the drilling mileage position sequence, searching corresponding point coordinates according to the track mileage position, writing a basic drilling number index, and associating the basic drilling number with a drilling center coordinate to obtain a drilling center positioning sequence.
  10. 10. The method for constructing a dam without intercepting construction according to claim 1, wherein the specific step of S5 is: S501, marking Ji Kongkou elevation and the elevation of the top surface of the hard rock stratum according to basic drilling number indexes based on the drilling center positioning sequence, the elevation marking of the top surface of the hard rock stratum, marking the elevation of the top surface of the hard rock stratum, comparing the drilling depth readings according to the elevation marking intervals of the top surface of the hard rock stratum and the elevation marking intervals of the top surface of the hard rock stratum, giving an arrival judgment code, writing a table corresponding to the numbers and the judgment code, and obtaining a drilling depth interval set; s502, based on the drilling depth interval set, collecting pressure readings of a propulsion oil cylinder, searching adjacent sampling pressure readings according to time sequence numbers, taking pressure reading variation, extracting a resistance variation interval according to the variation symbol overturning section and the continuous section boundary, and writing interval start and end sequence numbers and interval type codes to obtain a resistance variation interval set; S503, based on the drilling depth interval set and the resistance change interval set, calling a drilling center positioning sequence, aligning a basic drilling number index, searching the same-number hole sites, eliminating non-target hole sites according to the arrival judgment code and the interval type code, and writing in basic hole site state codes and hole site number rows to obtain a dam foundation construction sequence.
  11. 11. A dam construction system requiring no closure construction, comprising: The data acquisition module is used for acquiring river channel water level lines, river bed section lines, river bank side lines, designed dam axes, track center lines, truss node coordinates and bearing values, shield machine weight and track contact point coordinates, basic drilling numbers and viaduct track mileage points, hard rock layer top surface elevation, orifice elevation, drilling depth readings and thrust cylinder pressure readings; the data processing module is used for executing water passing boundary line demarcation, available span section identification, rail pair axle judgment and correction, borehole center positioning sequence establishment, drilling depth interval and resistance interval judgment; The construction control module is used for controlling the drilling construction sequence and the construction parameters according to the dam foundation construction sequence; the data acquisition module, the data processing module and the construction control module are in communication connection with each other.
  12. 12. A computer-readable storage medium, on which a computer program is stored, characterized in that the dam construction method without requiring a closure construction according to any one of claims 1 to 10 is implemented when the computer program is executed by a processor.

Description

Dam construction method without interception construction Technical Field The invention relates to the technical field of non-interception construction, in particular to a dam construction method without interception construction. Background The core content of the method comprises riverbed foundation excavation, hard rock layer treatment, temporary construction structure construction, river crossing arrangement of construction equipment, dam foundation structure formation and the like, and the method is widely applied to foundation construction processes of hydroelectric dams, barrages and other hydraulic junction projects, and is particularly suitable for engineering scenes of the hydroelectric dams in the construction stage, wherein the river water passing capability of the riverway needs to be maintained. The technology generally arranges construction sites on two sides of a river channel, performs foundation excavation operation in a river bed area, forms a device moving channel by building a river crossing construction structure, and performs foundation excavation and foundation structure construction in the river bed position, thereby completing the foundation construction of the hydraulic building of the river channel. The traditional dam construction method without closure construction refers to a mode of dam foundation construction under the condition that a river channel exists in water flow, and in hydropower station dam construction engineering, when the river channel flow is large, the construction period is long or the closure condition is not met in stages, the mode is adopted to ensure that the river channel maintains a normal water-through state during construction. According to the method, a steel structure bridge frame is erected between two banks of a river to form a river crossing construction channel, a vertical shield machine is arranged on the bridge frame and moves along the bridge frame direction, a river bed soil layer and a rock stratum are excavated downwards in a vertical drilling mode until reaching a hard rock stratum position, a foundation excavation hole site is formed in a hard rock stratum region, foundation structure construction is carried out in the region, and meanwhile river water flow can be discharged from the downstream of a construction region during construction, so that excavation of a dam foundation of a hydropower station, dam foundation treatment and dam foundation structure construction are completed. However, the traditional construction organization method mainly relies on site experience and simple terrain information to develop bridge arrangement and drilling arrangement, and in the construction of the hydropower station dam, the problems are more remarkable due to the complex valley terrain, large river bed fluctuation and obvious quaternary water level change. Under the condition that river channel topography is complicated or water level fluctuation is great, construction area and current space lack clear division, the crisscross condition of construction arrangement scope and rivers activity area appears easily, for example in the great river reach of river bed section change, the bridge lay the position be difficult to form stable correspondence with the river bed form, lead to the structure atress uneven or span to lay unreasonably. Meanwhile, a continuous checking mechanism is lacking between the bridge rail position and the dam axis, rail offset is easy to gradually accumulate in the construction process, and the positioning precision of the drilling center is reduced. In addition, when drilling operation enters different rock stratum conditions, the judgment basis for the relation between drilling resistance and depth change is lacking, and the mismatch between the hole site construction sequence and the stratum conditions is easily caused, so that the foundation construction continuity and the dam foundation structural stability of the hydropower station are affected. Disclosure of Invention In order to solve the technical problems in the prior art, the embodiment of the invention provides a dam construction method without interception construction; In order to achieve the above purpose, the invention adopts the following technical scheme that the dam construction method without interception construction comprises the following steps: S1, acquiring a river channel water level line, a river bed section line, a river bank side line and a design dam axis, extracting intersection points of the river channel water level line and the river bed section line, connecting water passing boundary lines, and dividing a water passing corridor range to obtain a water passing corridor range record; S2, based on the water passage range record, acquiring a track center line, truss node coordinates and bearing values, shield machine weight and track contact point coordinates, screening stress nodes according to an adjacent relation, and identifying available sp