CN-122016187-A - Duckweed type dam leak water inlet positioning and plugging method

CN122016187ACN 122016187 ACN122016187 ACN 122016187ACN-122016187-A

Abstract

The invention relates to the technical field of hydraulic engineering detection and discloses a duckweed-type dam leak water inlet positioning and plugging method which comprises the following steps of firstly placing monitoring equipment on a water facing side of a dam, enabling the monitoring equipment to be continuously and uniformly patrolled along the water facing side of the dam and automatically change a moving direction when the monitoring equipment moves to the end of the dam, secondly, supplying power through solar energy in the patrolling process to ensure continuous voyage of the monitoring equipment, thirdly, when water leakage occurs in the dam, enabling the water surface vortex or abnormal water flow collection to occur at the leak water inlet, stopping movement of the monitoring equipment, and gradually moving along water flow to the leak water inlet so as to rapidly monitor the position of the water leakage.

Inventors

YU GUOQING
CHEN TIAN
SU LEI
MENG YUHAN
WANG CHAO
MEI BIN
LI SHUXIA
LI CHENCHEN
YANG YUEXIA
WANG JUN
CHEN BING
SHEN LISHA
XU LUKAI
Mo Tengfei

Assignees

黄河水利委员会黄河水利科学研究院

Dates

Publication Date: 20260512
Application Date: 20260206

Claims (10)

1. The duckweed type dam leak water inlet positioning and blocking method is characterized by comprising the following steps of: The method comprises the steps that firstly, monitoring equipment is placed on the water facing side of a dam, the monitoring equipment is patrolled at a constant speed along the water facing side of the dam, and when the monitoring equipment moves to the end part of the dam, the moving direction is automatically changed; Step two, in the process of inspection, power supply is carried out through solar energy to ensure the endurance of the monitoring equipment; When water leakage occurs in the dam, water surface vortex or abnormal water flow collection occurs at the water inlet of the water leakage, the monitoring equipment stops moving and gradually moves to the water inlet of the water leakage along the water flow, so that the position of the water leakage is rapidly monitored; step four, the plugging piece of the monitoring equipment gradually moves towards the loophole along the water flow, and the moving speed of the plugging piece is reduced along with the increase of the water flow rate, so that the plugging piece can accurately plug the loophole; Step five, monitoring the specific depth of the leak through the downward moving distance of the plugging piece, detecting the inside of the leak through the end part of the plugging piece, judging the type of the leak, and pre-plugging the leak; Step six, when the leak is plugged, a water retaining wall is piled on the periphery of the leak at the water facing side of the dam, and water in the water retaining wall is discharged; and seventhly, plugging the water inlet of the leak through the water facing side or punching and plugging the leak through the top of the dam.
2. The duckweed-type dike leak water inlet positioning and plugging method according to claim 1, wherein in the third step, the initial diameter of the leak water inlet is 5mm-100mm.
3. The method for positioning and plugging a water inlet of a leak in a duckweed-type dike according to claim 2, wherein in the fourth step and the fifth step, the plugging piece is connected with the monitoring equipment through a rope, the depth of the leak is detected by detecting the unreeling length of the rope, and the plugging piece is conical and has a diameter of 1mm-200mm.
4. The method for positioning and plugging a water inlet of a duckweed-type dike according to claim 1, wherein in the fifth and seventh steps, the leak type comprises a penetration depth of the leak points and distribution of the leak points, when the leak points completely penetrate the dike or the large-area diffusion of the leak points and the net-shaped crack leakage, the water facing side is combined with the top of the bottom plate for plugging, and when the penetration depth of the leak points is shallow or the leak points are single, the water facing side is used for plugging.
5. The duckweed dam leak water inlet positioning and plugging method according to claim 1, wherein said monitoring apparatus comprises: the device comprises a lower floating plate (1) and an upper floating plate (2), wherein a connecting piece (3) is connected between the lower floating plate (1) and the upper floating plate (2); the driving part is arranged between the lower floating plate (1) and the upper floating plate (2) to enable the lower floating plate (1) and the upper floating plate (2) to move along the edge of the water side of the dam; The storage part is arranged on the lower floating plate (1), a plugging piece is arranged on the storage part, when the water flow of the plugging piece passing through the storage part changes, the storage part releases the locking of the plugging piece, and the plugging piece moves along the water flow until the plugging piece plugs the loophole, and the internal condition of the loophole is detected through the plugging piece.
6. The positioning and plugging method for the water inlet of the duckweed-type dam hole according to claim 5, wherein the driving part comprises a driving motor (4) and two guide wheels (5), the driving motor (4) is fixedly connected to the lower floating plate (1), the two guide wheels (5) are symmetrically and rotatably connected between the lower floating plate (1) and the upper floating plate (2), a crawler sealing piece (6) is sleeved between the two guide wheels (5), the crawler sealing piece (6) is tightly attached to the lower floating plate (1) and the upper floating plate (2), the outer side of the crawler sealing piece (6) extends to the outer parts of the lower floating plate (1) and the upper floating plate (2), The belt conveyor is characterized in that the output end of the driving motor (4) and the shaft ends of the guide wheels (5) are fixedly connected with belt wheels (7), a plurality of belt wheels (7) are sleeved with belts (8), and the outer sides of the track sealing pieces (6) are corrugated.
7. The duckweed-type dike leak water inlet positioning and plugging method according to claim 6, further comprising a guide mechanism (11) symmetrically arranged on the lower floating plate (1), wherein the guide mechanism (11) comprises a mounting plate (111), a hollow shaft (112) is rotatably connected to the mounting plate (111), a movable shaft (113) is slidably connected to the inside of the hollow shaft (112), a turning bevel gear (114) is symmetrically arranged on the movable shaft (113), a propeller (115) is fixedly connected to the end part of the movable shaft (113), a driving bevel gear (116) is rotatably connected to the lower floating plate (1), and the shaft end of the driving bevel gear (116) is connected with the shaft end of the guide wheel (5), The hollow shaft (112) is internally provided with a first electromagnet (117), a spring (118) is fixedly connected between the first electromagnet (117) and the movable shaft (113), one side of the movable shaft (113) close to the first electromagnet (117) shows magnetism, the first electromagnet (117) is electrically connected with the driving motor (4), and when the rotation direction of the driving motor (4) is opposite, the magnetic poles of the first electromagnet (117) are opposite.
8. The duckweed-type dike leak water inlet positioning and blocking method according to claim 5, wherein the storage part comprises a storage box (12), a containing pipe (13) is communicated with the bottom of the storage box (12), a rotating shaft (14) is rotatably connected to the inside of the storage box (12), a winding roller (15) is mounted on the rotating shaft (14), a pull rope (16) is wound on the winding roller (15), the end part of the pull rope (16) penetrates through the containing pipe (13), the blocking piece is connected to the end part of the pull rope (16), a mounting box (21) is symmetrically mounted in the storage box (12), and a release mechanism is arranged between the mounting box (21) and the rotating shaft (14).
9. The positioning and plugging method for the water inlet of the duckweed-type dike according to claim 8, wherein the release mechanism comprises a ratchet wheel (22) fixedly connected to the rotating shaft (14), a matched ratchet wheel (23) is rotatably connected to one side of the installation box (21) close to the ratchet wheel (22), a spring piece (24) is installed between the ratchet wheel (23) and the installation box (21), a second electromagnet (25) is installed on one side of the installation box (21) close to the ratchet wheel (23), a third electromagnet (26) is symmetrically installed on the inner wall of the installation box (21), an elastic damping piece (27) is installed on one side of the third electromagnet (26) close to the rotating shaft (14), and a brake disc (28) is installed at the end part of the elastic damping piece (27), The magnetic pole is displayed on one side of the ratchet (23) close to the second electromagnet (25), the magnetic pole is different from the magnetic pole of the ratchet (23) when the second electromagnet (25) is electrified, the magnetic pole is displayed on one side of the brake disc (28) close to the third electromagnet (26), and the magnetic pole is the same as the magnetic pole of the brake disc (28) when the third electromagnet (26) is electrified.
10. The duckweed-type dike leak water inlet positioning and plugging method according to claim 9, wherein the plugging piece comprises a micro-generator (17), the micro-generator (17) is connected with the end part of a pull rope (16), a water wheel (18) is arranged on the micro-generator (17), a plugging head (19) is arranged on one side of the water wheel (18) far away from the micro-generator (17), a monitoring probe (20) is arranged on the end part of the plugging head (19), The power generation end of the miniature power generator (17) is electrically connected with the second electromagnet (25) and the third electromagnet (26) through a circuit, the circuit is arranged in the stay cord (16), and spiral blades are arranged on the outer wall of the water wheel (18).

Description

Duckweed type dam leak water inlet positioning and plugging method Technical Field The invention relates to the technical field of hydraulic engineering detection, in particular to a duckweed type dam leak water inlet positioning and plugging method. Background The dam is used as a key infrastructure of a flood control system, the safe operation of the dam directly relates to the life and property safety of people, under the long-term action of high water level in a flood period, a leakage channel is easy to generate in the dam, and further dangerous cases such as piping and loopholes are developed, and according to statistics, about 60% of dam breaking accidents are caused by leakage damage, and timely discovery and effective blocking of the dangerous cases of the loopholes are core links for avoiding a dam breaking disaster. The existing detection and treatment of the dam loopholes mainly comprise a manual inspection method, an underwater detection technology, a distributed optical fiber sensing technology and a traditional plugging technology, wherein the manual inspection method has high labor intensity and low efficiency, is difficult to implement at night under severe weather conditions, and has low discovery rate of small and medium loopholes hidden under water; the underwater detection technology diver has the advantages of high operation risk, high cost, incapability of diving when water flow is turbulent, easiness in sediment and bubble interference on acoustic equipment, limited resolution of shallow small-size holes, difficulty in realizing real-time dynamic monitoring, low positioning precision, response delay, incapability of directly identifying the shape of a water inlet and the like in distributed optical fiber sensing, high construction reconstruction cost, and the traditional plugging technology mainly adopts methods of surrounding well reverse filtration, water side plugging (cotton quilts and geotechnical cloth), dam top drilling grouting and the like, and has the defects of response lag (from discovery to implementation of a plurality of hours), large positioning deviation, serious material waste, requirement of a large amount of manpower and material resources and the like in the conventional plugging technology, and plugging materials are easy to be washed away and have low success rate under the condition of high flow rate. The existing dam loopholes are positioned and monitored with lag, the optimal disposal time is easy to miss, the three-dimensional coordinates of the water inlet on the water facing side are difficult to accurately lock, the follow-up plugging pertinence is poor, and therefore the monitored plugging depends on manual decision and operation, the emergency response speed is low, and the degree of automation is low. Disclosure of Invention The invention provides a duckweed-type dam leak water inlet positioning and blocking method, which can realize uninterrupted active inspection through monitoring equipment, can discover the leak in time, can accurately lock the three-dimensional coordinates of a water side water inlet, is convenient for carrying out targeted blocking on the leak in the follow-up process, has high emergency response speed and high automation degree, and solves the problems of untimely monitoring, poor positioning precision and low automation degree in the background art. The invention provides the following technical scheme: A duckweed type dike leak water inlet positioning and plugging method comprises the following steps: The method comprises the steps that firstly, monitoring equipment is placed on the water facing side of a dam, the monitoring equipment is always patrolled at a constant speed along the water facing side of the dam, and when the monitoring equipment moves to the end part of the dam, the moving direction is automatically changed; Step two, in the process of inspection, power supply is carried out through solar energy to ensure the endurance of the monitoring equipment; When water leakage occurs in the dam, water surface vortex or abnormal water flow collection occurs at the water inlet of the water leakage, the monitoring equipment stops moving and gradually moves to the water inlet of the water leakage along the water flow, so that the position of the water leakage is rapidly monitored; step four, the plugging piece of the monitoring equipment gradually moves towards the loophole along the water flow, and the moving speed of the plugging piece is reduced along with the increase of the water flow rate, so that the plugging piece can accurately plug the loophole; Step five, monitoring the specific depth of the leak through the downward moving distance of the plugging piece, detecting the inside of the leak through the end part of the plugging piece, judging the type of the leak, and pre-plugging the leak; Step six, when the leak is plugged, a water retaining wall is piled on the periphery of the leak at the water facing side of th