Dam monitoring
1 Monitoring content
The main monitoring contents are as follows:
Ø Surface deformation monitoring
Ø Internal deformation monitoring
Ø pressure monitoring
Ø flow monitoring
Ø Soil pressure monitoring
Ø stress monitoring
Ø level monitoring
Ø monitoring
Ø Temperature monitoring
2 Monitoring programs
The schematic diagram of the monitoring plan is as follows:
The specific monitoring plan is as follows:
|
Monitoring content |
Monitoring parameters |
Monitoring method |
part |
|
Deformation Monitoring |
Surface displacement deformation |
GPS positioning system Pull Wire Displacement Meter |
On both sides of the rock or solid soil foundation |
|
Internal displacement deformation |
Guide Wheel Fixed Inclinometer |
Drilling |
|
|
Stress / Strain Monitoring |
Concrete stress |
Surface strain gauge, embedded strain gauge |
Stress in concrete dam interior and concrete slab of earth-rock dam |
|
Infiltration line monitoring |
Seepage monitoring |
Pore pressure gauge |
Drilling |
|
water level monitoring |
Reservoir level |
Pore pressure gauge |
reservoir |
|
Volume monitoring |
Changes in the internal volume of concrete |
No stress gauge |
Mass cast concrete section |
|
pressure monitoring |
contact earth pressure |
earth pressure box |
concrete |
|
Precipitation monitoring |
rainfall |
rain gauge |
on the stable dam |
3 system advantages
Ø It has the functions of automatic collection, transmission, storage, processing and analysis and comprehensive early warning of water conservancy dam operation data, and can conduct all-weather real-time monitoring under various climatic conditions;
Ø has the functions of basic data management, real-time display and release of various monitoring contents, graphic report production, data analysis, comprehensive early warning, manual observation and input, lightning protection, anti-interference, data backup, power failure protection, self-diagnosis and fault display;
Ø system monitoring platform has professionalism and integration, video monitoring and intelligent analysis in the warehouse area, and optimized design; the system software has the corresponding interface to support and display the monitoring platform of the Safety Supervision Administration; the terminal display screen of the monitoring room can display all monitoring objects at the same time, and Can be switched arbitrarily;
Ø The data can be displayed graphically, including the relationship between water level and flow, water level hydrograph, rainfall histogram, seepage pressure, seepage hydrograph, time history curve, X/Y coordinate graph, simulation graph, histogram, histogram, etc.
Ø The archival period of power and historical data is not less than 30 days, and the alarm data and automatic screenshots are kept for at least 5 years, and it has the function of intelligent analysis and alarm.
Ø Internet information release: All information is released through the Internet. As long as the Internet is available, users can use mobile phones, tablets and other terminal devices to know the running status of these sites anywhere.
4 Monitoring basis
1) Project-related survey and design materials and bidding documents;
2) "Engineering Measurement Specification" ( GB50026-2007 );
3) "Detailed Rules for Safety and Quality Management of Construction Division";
4) "Technical Specifications for Safety Monitoring of Earth-rock Dams" ( SL551-2012 );
5) "Code for Compilation of Earth-rock Dam Safety Monitoring Data" ( DL/T 5256-2010 );
6) "Technical Specification for Dam Safety Monitoring Automation" ( DL/T5211-2005 );
7) "Basic Technical Conditions of Dam Safety Automatic Monitoring System Equipment" ( SL268-2001 );
8) "Technical Specification for Concrete Dam Safety Monitoring" ( SL601-2013 );
9) "Concrete Dam Safety Monitoring Data Compilation Regulations" ( DL/T5209-2005 );
10) "National First and Second Class Leveling Standards" ( GB12897-2006 );
11) "National Third and Fourth Level Leveling Standards" ( GB12898-2009 );
12) "Medium and Short-Range Photoelectric Ranging Specifications" ( GB/T16818-2008 );
13) "National Triangulation Specification" ( GB/T17942-2000 );
14) "Water Level Observation Standard" ( GB/T50138-2010) ;
15) "Code for Construction Measurement of Water Conservancy and Hydropower Engineering" ( DL/T5173-2003 );
16) "Technical Specification for Cement Grouting Construction of Hydraulic Buildings" ( DL/T5148-2012 ).
17) Design drawings and other relevant technical specifications;