WO2019192266A1 - 基于声波感应的混凝土面板堆石坝脱空区水下检测系统 - Google Patents

基于声波感应的混凝土面板堆石坝脱空区水下检测系统 Download PDF

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WO2019192266A1
WO2019192266A1 PCT/CN2019/075003 CN2019075003W WO2019192266A1 WO 2019192266 A1 WO2019192266 A1 WO 2019192266A1 CN 2019075003 W CN2019075003 W CN 2019075003W WO 2019192266 A1 WO2019192266 A1 WO 2019192266A1
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WIPO (PCT)
Prior art keywords
sound wave
acoustic wave
traction
mobile platform
wave generating
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PCT/CN2019/075003
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English (en)
French (fr)
Inventor
武颖利
杨胜
易瑞吉
郭万里
李登华
范红霞
肖立敏
傅华
凌华
张兆省
皇甫泽华
王芳
任强
钟启明
黄英豪
李勇
李军
张民
李士林
张举华
吴杰夫
龚丽飞
皇甫玉峰
崔宝玉
陈晨
袁静
蒋致乐
皇甫明夏
Original Assignee
水利部交通运输部国家能源局南京水利科学研究院
国电科学技术研究院有限公司成都分公司
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Publication of WO2019192266A1 publication Critical patent/WO2019192266A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/02—Fixed barrages
    • E02B7/04—Dams across valleys
    • E02B7/06—Earth-fill dams; Rock-fill dams
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
    • G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material

Definitions

  • the invention relates to the field of detecting equipment, in particular to an underwater detecting system for a hollow surface of a concrete face rockfill dam panel based on acoustic wave induction.
  • This patent is completed by the National Key R&D Program “Research on Key Technologies for Risk Management of Plain Reservoir Projects” (2017YFC 0405005).
  • concrete face rockfill dam is widely used in water conservancy and hydropower projects.
  • Concrete slabs are an important part of dam body anti-seepage system, and its safety directly determines the safety of dam body. Affected by the construction quality and external load of the dam, the panel and the lower cushion material are prone to the void area, and the void area often appears below the water level line, which brings great inconvenience to the detection of the void area.
  • the object of the present invention is to provide a simple and efficient underwater detection system for the concrete panel rockfill dam panel voiding area, and realize the underwater rapid low-cost detection of the concrete panel rockfill dam panel void area.
  • the present invention adopts the following technical solutions:
  • Acoustic wave induction based underwater detection system for concrete face rockfill dam including mobile platform, sound wave generating device, sound wave receiving device, traction device and positioning device; the sound wave generating device and positioning device are arranged on the mobile platform
  • the traction device controls the movement platform to move on the surface of the concrete panel; the sound wave generating device generates a penetrating sound wave, the sound wave receiving device receives the sound wave, determines whether there is a void region according to the sound wave signal, and transmits the position of the void region through the positioning device .
  • the sound wave generating device is a tapping device that performs a certain frequency of tapping on the concrete panel to generate sound waves.
  • the sound wave generating device is composed of a reciprocating drive motor that drives the hammer hammer to strike the concrete panel at a certain frequency to generate sound waves.
  • the mobile platform is composed of a driving device, a crawler belt, a driving wheel, a driven wheel and a device carrier; the equipment carrier is disposed on the crawler belt, and the driving device controls the driven wheel and the driving wheel to rotate to drive the track to rotate.
  • Mobile devices are composed of a driving device, a crawler belt, a driving wheel, a driven wheel and a device carrier; the equipment carrier is disposed on the crawler belt, and the driving device controls the driven wheel and the driving wheel to rotate to drive the track to rotate.
  • the acoustic wave receiving device is disposed at the bottom of the equipment stage, and is arranged at equal intervals according to the size of the device; the number is 4-8.
  • the acoustic signal is transmitted to the terminal through the signal transmission cable for recording and storage, and the acoustic signal analysis is performed to determine whether there is a cavity according to the difference in acoustic conduction between the cavity and the entity.
  • a fixing device is further included for fixing the sound wave generating device to the mobile platform.
  • the fixing device comprises a support rod and a connecting rod, the support rod is vertically fixed to the moving platform; the connecting rod is fixedly connected to the supporting rod and the sound wave generating device.
  • the sound wave generating device generates a penetrating sound wave, and the sound wave generating device can be firmly stabilized on the moving platform by using the fixing device to avoid interference with the measurement due to the self vibration.
  • the traction device comprises a hoisting machine and a traction cable; the traction cable is connected to the moving platform, and the reciprocating motion of the device along the dam surface is jointly controlled by the driving force of the moving platform and the traction of the hoisting machine.
  • an electromagnet is provided at the bottom of the mobile platform.
  • the electromagnet is magnetically induced by the input current, and the steel bars inside the reinforced concrete are adsorbed, so that the device can be better adsorbed on the panel.
  • the front end of the mobile platform is provided with a high pressure cleaning nozzle.
  • the high pressure cleaning nozzle can clean the sludge on the detection surface to facilitate the tapping of the tapping device.
  • the positioning device can be positioned by a satellite positioning system.
  • the system of the invention realizes the position of the void area of the concrete face rockfill dam panel by analyzing the movement of the mobile platform and the tapping of the tapping device and the signal recording and transmission of the sound wave receiving device, by analyzing the wavelength and frequency variation of the acoustic wave signal, and realizing the concrete panel Rapid, efficient and low-cost detection of underwater water in the slab of the rockfill dam.
  • FIG. 1 is a schematic structural view of a system device of the present invention
  • equipment carrier 2. support rod, 3. connecting rod, 4. positioning device, 5. driving wheel, 6. driven wheel, 7. reciprocating drive motor, 8. percussion hammer, 9. acoustic wave receiving device 10. Winding machine, 11. Traction cable, 12. Water line, 13. Concrete panel, 14. Cushion, 15. Panel void.
  • the underwater detection system of the concrete face rockfill dam emptying area shown in FIG. 1 comprises a mobile platform, a sound wave generating device, a sound wave receiving device 9, a traction device and a positioning device 4; the sound wave generating device and the positioning device 4 are arranged on the mobile platform
  • the traction device controls the movement platform to move on the surface of the concrete panel 13; the sound wave generating device generates an acoustic wave, the sound wave receiving device 9 receives the sound wave, determines whether there is a void region 15 according to the sound wave signal, and transmits it through the positioning device 4.
  • the position of the void area 15 The position of the void area 15
  • the sound wave generating device may be various devices that generate penetrating sound waves, and determine the void region according to the difference in sound wave conduction between the void region and the solid region.
  • the mobile platform is composed of a driving device, a crawler belt, a driving wheel 5, a driven wheel 6 and a equipment platform 1; the equipment platform 1 is disposed on the crawler belt, and the driving device controls the driven wheel 6 and the driving wheel 5 to rotate and drive the crawler belt. Turn to move the device.
  • the sound wave receiving device 9 is disposed at the bottom of the equipment stage 1 and arranged at equal intervals according to the size of the device; the number is 4-8.
  • the traction device comprises a hoisting machine 10 and a traction cable 11; the traction cable 11 is connected to the moving platform, and the reciprocating motion of the device along the dam surface is jointly controlled by the driving force of the moving platform and the traction of the hoisting machine 10.
  • the hoisting machine 10 is fixed on one side of the dam top panel, the equipment is placed on the concrete panel 13, and the traction cable 11 is released by the hoisting machine 10, and moves downward along the panel into the water body under the self-weight of the device, and the sound wave generating device A penetrating sound wave is generated while the sound wave receiving device 9 receives the vibration sound of the concrete panel 13 and records and transmits it to the terminal, and the wavelength of the vibration sound generated by the tapping of the hammer 8 when the device walks to the panel void region 15 And the frequency will change, the sound signal is recorded and transmitted by the sound wave receiving device 9, and saved to the terminal.
  • the sound wave receiving device 9 By analyzing the sound signals at different positions, the position and size of the void area are determined, and the concrete panel is removed from the slate panel. Rapid and efficient detection of underwater.
  • the present embodiment is different from the foregoing embodiment only in that the sound wave generating device is a tapping device, as shown in FIG. 1, consisting of a reciprocating drive motor 7 and a hammering hammer 8, which drives the hammering hammer 8
  • the concrete panel 13 is tapped at a certain frequency to generate sound waves.
  • the first embodiment differs from the previous embodiment only in that it further includes a fixing device including a support rod 2 and a connecting rod 3, the support rod 2 being vertically fixed to the equipment stage 1; the connection The rod is fixedly connected to the support rod 2 and the sound wave generating device.
  • a fixing device including a support rod 2 and a connecting rod 3, the support rod 2 being vertically fixed to the equipment stage 1; the connection The rod is fixedly connected to the support rod 2 and the sound wave generating device.

Abstract

一种基于声波感应的混凝土面板堆石坝脱空区水下检测系统，包括移动平台、声波产生装置、声波接收装置（9）、牵引装置和定位装置（4）；声波产生装置和定位装置（4）设置于移动平台上，牵引装置控制移动平台在混凝土面板（13）表面移动；声波产生装置产生穿透性声波，声波接收装置（9）接收声波，根据声波信号判断是否存在脱空区，并通过定位装置（4）传输脱空区位置。

Description

基于声波感应的混凝土面板堆石坝脱空区水下检测系统 技术领域
本发明涉及检测设备领域，具体涉及一种基于声波感应的混凝土面板堆石坝面板脱空区域水下检测系统。本专利依托国家重点研发计划“平原水库工程除险抢护关键技术研究”项目(2017YFC 0405005)完成。
背景技术
混凝土面板堆石坝作为主要的坝型，在水利水电工程中应用广泛，混凝土面板作为坝体防渗体系的重要组成部分，其安全性直接决定了坝体的安全。受坝体施工质量和外荷载影响，面板与下部垫层料易出现脱空区域，且脱空区域多出现在水位线以下，给脱空区的检测带来巨大的不便。
目前对水位线以下面板脱空区检测尚无有效的办法，多采用人工检测手段，依靠潜水员潜水至面板位置，进行敲击等手段进行判别，危险系数大，干扰因素多，且对于高坝，深度超过100m，目前潜水员无法达到如此深度，从而无法实现对面板脱空区的全面检测。另一种有效的手段是将水库进行放空，使面板出露，进行人工检测，该方法也是非常有效的，但会导致水资源的巨大浪费，带来巨大的经济损失。
发明内容
本发明的目的是提供一种简单高效的混凝土面板堆石坝面板脱空区水下检测系统，实现混凝土面板堆石坝面板脱空区的水下快速低成本检测。
为实现上述技术目的，本发明采用如下技术方案：
基于声波感应的混凝土面板堆石坝脱空区水下检测系统，包括移动平台、声波产生装置、声波接收装置、牵引装置和定位装置；所述声波产生装置和定位装置设置于移动平台上，所述牵引装置控制移动平台在混凝土面板表面移动；所述声波产生装置产生穿透性声波，所述声波接收装置接收声波，根据声波信号判断是否存在脱空区，并通过定位装置传输脱空区位置。
作为本发明的进一步改进，所述声波产生装置为敲击装置，对混凝土面板进行一定频率的敲击，产生声波。优选的，所述声波产生装置由往复驱动电机和敲击锤组成，所述往复驱动电机驱动敲击锤对混凝土面板进行一定频率的敲击，产生声波。
作为本发明的进一步改进，所述移动平台由驱动装置、履带、驱动轮、从动轮以及设备载台组成；设备载台设置于履带上，通过驱动装置控制从动轮和驱动轮转动带动履带转动来移动设备。
作为本发明的进一步改进，所述声波接收装置设置于设备载台底部，根据设备尺寸大小等间距布置；数量为4-8个。声波信号通过信号传输电缆传输至终端进行记录和存储，进行声波信号分析，根据空腔与实体的声波传导差异，确定是否存在空腔。
作为本发明的进一步改进，还包括固定装置，将声波产生装置固定于移动平台上。优选的，所述固定装置包括支撑杆和连接杆，所述支撑杆垂直固定于移动平台上；所述连接杆固定连接支撑杆和声波产生装置。声波产生装置产生穿透性声波，采用固定装置可以将声波产生装置牢固稳定在移动平台上，避免因自身震动对测量产生干扰。
作为本发明的进一步改进，所述牵引装置包括卷扬机和牵引钢索；牵引钢索连接在移动平台上，通过移动平台的自身驱动力和卷扬机的牵引，共同控制设备沿坝面的上下往复运动。
作为本发明的进一步改进，所述移动平台底部设有电磁铁。在行走过程中，通过输入电流使得电磁铁具有磁性，对钢筋混凝土内部的钢筋进行吸附，使得设备可更好的吸附在面板上。
作为本发明的进一步改进，所述移动平台前端设有高压清洗喷头。高压清洗喷头可以对检测面的淤积物进行清洗，便于敲击装置的敲击。
作为本发明的进一步改进，所述定位装置可通过卫星定位系统进行定位。
本发明的系统通过移动平台的移动和敲击装置敲击以及声波接收装置的信号记录传输，通过分析声波信号的波长和频率变化，判断混凝土面板堆石坝面板脱空区的位置，实现混凝土面板堆石坝面板脱空区的水下快速高效低成本检测。
附图说明
图1为本发明的系统装置结构示意图；
其中，1.设备载台，2.支撑杆，3.连接杆，4.定位装置，5.驱动轮，6.从动轮，7.往复驱动电机，8.敲击锤，9.声波接收装置，10.卷扬机，11.牵引钢索，12.水位线，13.混凝土面板，14.垫层，15.面板脱空区。
具体实施方式
下面结合实施例和附图说明对本发明的技术方案做进一步说明。
实施例1
如图1所示的混凝土面板堆石坝脱空区水下检测系统，包括移动平台、声波产生装置、声波接收装置9、牵引装置和定位装置4；声波产生装置和定位装置4设置于移动平台上，所述牵 引装置控制移动平台在混凝土面板13表面移动；所述声波产生装置产生声波，所述声波接收装置9接收声波，根据声波信号判断是否存在脱空区15，并通过定位装置4传输脱空区15位置。
声波产生装置可为产生穿透性声波的各种装置，根据脱空区与实体区的声波传导差异判断脱空区。
优选的，所述移动平台由驱动装置、履带、驱动轮5、从动轮6以及设备载台1组成；设备载台1设置于履带上，通过驱动装置控制从动轮6和驱动轮5转动带动履带转动来移动设备。
所述声波接收装置9设置于设备载台1底部，根据设备尺寸大小等间距布置；数量为4-8个。
所述牵引装置包括卷扬机10和牵引钢索11；牵引钢索11连接在移动平台上，通过移动平台的自身驱动力和卷扬机10的牵引，共同控制设备沿坝面的上下往复运动。
本发明的系统，将卷扬机10固定在坝顶面板一侧，设备放置在混凝土面板13上，通过卷扬机10释放牵引钢索11，在设备自重作用下，沿面板向下运动进入水体，声波产生装置产生穿透性声波，同时声波接收装置9接收混凝土面板13的振动声音，并记录和传输至终端，当设备行走至面板脱空区15时，受敲击锤8敲击产生的振动声音的波长和频率会发生变化，声音信号通过声波接收装置9的记录和传输，保存至终端，通过对不同位置的声音信号进行分析，判断脱空区的位置和大小，实现混凝土面板对石板面板脱空区的水下快速高效检测。
实施例2
本实施例与前述实施例的不同之处仅在于，声波产生装置为敲击装置，如图1所示，由往复驱动电机7和敲击锤8组成，所述往复驱动电机7驱动敲击锤8对混凝土面板13进行一定频率的敲击，产生声波。
实施例3
本实施例1与前述实施例的不同之处仅在于，还包括固定装置，所述固定装置包括支撑杆2和连接杆3，所述支撑杆2垂直固定于设备载台1上；所述连接杆固定连接支撑杆2和声波产生装置。
实施例4
本实施例与前述实施例的不同之处仅在于，所述移动平台底部设有电磁铁。
实施例5
本实施例与前述实施例的不同之处仅在于，所述移动平台前端设有高压清洗喷头。
以上所述为本发明的优选实施实例，并不用于限制不发明，对于本领域技术人员，可以参照本发明详细说明，对前述各功能部件的技术方案进行修改，或者对其中部分技术特征进行等同替换，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种基于声波感应的混凝土面板堆石坝脱空区水下检测系统，其特征在于，包括移动平台、声波产生装置、声波接收装置、牵引装置和定位装置；所述声波产生装置和定位装置设置于移动平台上，所述牵引装置控制移动平台在混凝土面板表面移动；所述声波产生装置产生穿透性声波，所述声波接收装置接收声波，根据声波信号判断是否存在脱空区，并通过定位装置传输脱空区位置。
  2. 根据权利要求1所述的系统，其特征在于，所述声波产生装置为敲击装置，对混凝土面板进行一定频率的敲击，产生声波。
  3. 根据权利要求1或2所述的系统，其特征在于，所述声波产生装置由往复驱动电机和敲击锤组成，所述往复驱动电机驱动敲击锤对混凝土面板进行一定频率的敲击，产生声波。
  4. 根据权利要求1所述的系统，其特征在于，所述移动平台由驱动装置、履带、驱动轮、从动轮以及设备载台组成；设备载台设置于履带上，通过驱动装置控制从动轮和驱动轮转动带动履带转动来移动设备。
  5. 根据权利要求4所述的系统，其特征在于，所述声波接收装置设置于设备载台底部，根据设备尺寸大小等间距布置；数量为4-8个。
  6. 根据权利要求1所述的系统，其特征在于，还包括固定装置，将声波产生装置固定于移动平台上。
  7. 根据权利要求6所述的系统，其特征在于，所述固定装置包括支撑杆和连接杆，所述支撑杆垂直固定于移动平台上；所述连接杆固定连接支撑杆和声波产生装置。
  8. 根据权利要求1所述的系统，其特征在于，所述牵引装置包括卷扬机和牵引钢索；牵引钢索连接在移动平台上，通过移动平台的自身驱动力和卷扬机的牵引，共同控制设备沿坝面的上下往复运动。
  9. 根据权利要求1所述的系统，其特征在于，所述移动平台底部设有电磁铁。
  10. 根据权利要求1所述的系统，其特征在于，所述移动平台前端设有高压清洗喷头。
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