福建省东张水库大坝自动化监测系统观测资料分析（Analysis of the observation data of dam automation monitoring system of dongzhang reservoir in fujian province）

1、福建省东张水库大坝自动化监测系统观测资料分析（Analysis of the observation data of dam automation monitoring system of dongzhang reservoir in fujian province）This article is contributed by ywulw567PDF documents may have a poor browsing experience at the WAP end. It is recommended that you choose TXT, or download the source

2、 file to the native view.Management science,Analysis of the observation data of dam automation monitoring system of dongzhang reservoir in fujian provinceChen HuaaiFuqing dongzhang reservoir administration fujian fuqingAbstract: at present, large and medium-sized reservoirs have basically built a da

3、m safety observation system, and have several years observation data, but often lack the analysis and evaluation of observational data. In view of this problem, the observation data of dongzhang reservoir dam is analyzed, so as to give full play to the role of observation data and further improve th

4、e safety management level of the dam. Keywords: joint of concrete gravity dam observation data analysis of 1, the engineering general situation East Zhang Shuiku is located at 10 km west of fuqing city in fujian province, is located in the taihu lake basin River middle reaches carnation mountain, co

5、ntrol river basin area of 200 km2, water diversion river basin area of 102 km2. Design flood standard for 200 years, the school nuclear flood prevention standard 2000. Normal storage level 54 m, the design flood level of 54.77 m, the total capacity of 206 million m3, is a collection of flood control

6、, irrigation, urban water supply, power generation and tourism as one of the major hub (2) the comprehensive utilization of water storage projects. The dongzhang reservoir project consists of the concrete wide crack gravity dam, the spillway of the dam crest, the left and right water transmission ho

7、les and the post-dam power station. The top of the dam is 210m, divided into 16 dam sections. The dam has a height of 38.50 m, and the top of the dam has 4 holes 10 x 5.5 m curved gates to control the spillway. The height of the overflow weir is 49.00 m. The dam was built in November 1957 and put in

8、to operation in December 1958. In July 1965, the first reinforcement was carried out, and in May 2002, the second division was strengthened. In June 1998, the east Zhang Shuiku built sino-canadian cooperation project dam safety monitoring automatic system, realize the real-time, rapid and accurate m

9、onitoring of DAMS, is gradually improving the management level of the east Zhang Shuiku created the basic conditions, provide science according to the dam safety operation According to. 2. Analysis of the main contents of the observation analysis, the analysis of the data, the analysis of the fractu

10、re, the analysis of the vertical pressure, the analysis of the vertical line, and the analysis of seepage flow. 2.1 data maintenance: data entry, data modification, data deletion, data retrieval and data backup. The operator USES the computer to manage the data, saves the original view data in the w

11、ay of electronic documents, and avoids the hidden danger in the preservation of traditional original view data. 2.1.2 BGF: according to the ministry of water resources issued by the technical specification for concrete dam safety monitoring SDJ336-89) and other technical specifications of the conten

12、t and requirements of the observation data into BGF, mainly include print each observation statistics of the project, drawing process line and related line, potential process line, can meet the requirements of reservoir management unit annual observation data BGF. 2.2 the reliability of the observat

13、ion data To have input data and examine the basic reliability, mainly for the observation data of peak value, in order to avoid measurement, artificial calculation, input errors. 2.3 analysis and evaluation and their principles are based on different observation projects.We use the corresponding ana

14、lytical evaluation method and TCM to treat patients well and dialectically. This medical principle also applies to solving the mental health problems of public officials. The attention of the party and government and all aspects of society on the mental health of public officials can be called spiri

15、tual comfort; The personal psychological adjustment of civil servants can be called psychological protection. Through the dialectical treatment in both internal and external aspects, the psychological pressure of the civil servants will surely get some relief, and the goal of psychological balance w

16、ill surely be realized step by step. As social elite of the civil servants group not only can lead the masses in reform, development of social practice write glorious chapter of immortality, and to overcome their psychological diseases can also show the tenacity, persistence and wisdom. The civil se

17、rvice in our country can be relied on, is amiable and honorable! The principle. 2.3.1 recommendation of statistical model: analyze and evaluate observation data and establish mathematical statistical model. The model can be a single factor or multifactor mode depending on the physical quantity. Acco

18、rding to the correlation coefficient of the model, the multiple correlation coefficient and the residual standard deviation, determine the measuring point measured value regularity, and can further determine whether observation facilities may exist problem and the reliability of the observation data

19、. 2.3.2 correlation analysis: calculate the relationship between the observed data and multiple influencing factors. Based on the size of the correlation coefficient, the main influencing factors and the influence of the observation data are determined to determine whether the observation facilities

20、 may have problems. 2.3.3 analysis of three crack fractures: calculating the settlement rate of measurement points. Size according to the sedimentation rate, sentenced to whether you need to do further analysis of the fracture, by calculating the longitudinal inclination, vertical drawing should be

21、changed, and compared with experience limit value, determine possible transverse of uneven settlement crack. 2.3.4 potential analysis: through the potential calculation of the pressure head, determine the trend of the trend and determine the seepage condition of the site. 3. Analysis and evaluation

22、of observation data 3.1 deformation observation and analysis evaluation 3.1.1 settlement analysis in settlement analysis, firstly, the statistical model is established, and time factor model is adopted here. All models have the following five: S =Tp A + bt pbS = atbS = aet p S = aln (1 + BTP) S = al

23、n (1 + ln (1 + BTP), S is the subsidence, t is time, a, b and p are the model parameters, where the range of p is 1 to 2. When modeling, the correlation coefficient and residual standard deviation of the model are calculated using these five models respectively, and the optimal model is selected acc

24、ordingly. If the dam body can be crack in settlement analysis, crack analysis should be carried out. Fracture analysis can be used to determine whether there are lateral uneven settlement cracks in the dam body by calculating the longitudinal inclination and longitudinal tensile strain. Formula: gam

25、ma AB = SA? SB glNote: 1. thinking about families, civil servants under the mental health problem China elections and governance network 2. The power hidden behind loneliness cadres mental health should not be ignored, Chinese mental net 2005-11-25 (3) the anhui sixty percent civil servants who phys

26、ically handicapped most people suffering from chronic diseases, tencent news network on December 22, 2009, 4. Ellis ABC emotion theory enlightenment on life - science and technology information (academic research) 2008, 29, 5.Calculated using the following regression model: H (t) = a H (0) t - t + 1

27、 b, type H for the pipe in the water, H 1 as the upstream water level, t 0 for the time lag, t for the observation date, a and b for the model parameters. For a certain period of pressure, set different t 0, you can get different correlation coefficients. When the coefficient is greatest, t 0 is con

28、sidered to be a lag time. To determine the lag time, the multi-factor statistical model can be established. Statistical model as follows: (1) H + H = f f (H 2) + f (p) + f (T), type of H for uplift pressure, H 1 to swim on water, H 2 as the downstream water level, p for precipitation, T for the aver

29、age daily temperature. The statistical model has four factors: upstream water level, downstream water level, precipitation, average daily temperature. The maximum power of each factor can be 3 times. The optimal model can be obtained by selecting the factor and the highest power. In order to underst

30、and the law of Yang stress, the main influencing factors can be determined by related analysis. Correlation analysis calculation of uplift pressure and the water level of upstream, downstream water level, rainfall and average daily temperature of correlation coefficient, according to the maximum cor

31、relation coefficient to draw the results of the analysis in the paper are as follows: (1) the correlation coefficient is greater than 0.9, measuring point water was mainly affected by some factors, more closely; (2) the correlation coefficient is between 0.7 and 0.9, and the water level is mainly af

32、fected by a factor; (3) correlation coefficient is less than 0.7, and the measuring point water level is irrelevant to each factor. With the above results, the engineers can determine whether the pressure tube is good or not, the observation data is reliable, and the stress condition of the station

33、is measured. 3.3.2 potential analysis: the formula of potential is: phi =H? H2, phi is H1, right? H 2Potential, H is the pressure water level, H 1 is the upstream water level, H 2 is the downstream water level. The potential analysis of the potential is linear regression to the potential, the model

34、is phi (t) = at + b, phi is the position potential, t is the observation date, and a and b are model parameters, where a is the slope. According to the slope, we can judge the development trend of young pressure, and produce the following results: (1) the slope is larger than the raised standard val

35、ue, and the pressure has a tendency to rise gradually. (2) the slope is smaller than the standard value, and the pressure has a tendency to decrease gradually. (3) the slope is between the two, and the potential difference is in the standard range. (4) the potential is inconsistent with the above th

36、ree conditions, and there is no obvious trend in Yang pressure. The analysis of the seepage flow is standardized before the flow analysis is analyzed. The following conversion formula is used to standardize the seepage flow: Qs = Q/(0.67 + 0.033 T), the Qs in the formula is the normalized flow rate,

37、 and Q is the observed value of seepage flow, and T is the temperature. Consider the annual average temperature as a sine curve, with the average temperature of January and the mean temperature of July as the minimum and maximum. Similar to the young pressure analysis, the seepage flow can also esta

38、blish a multi-factor statistical model, and the mechanism of establishing statistical model is similar to the statistical model of Yang stress. See 3.3.1. Statistical models for: Q = f (1) H + f (H 2) + f (P) + f (T), type of Q for seepage flow, H 1 as the upstream water level, H 2 as the downstream

39、 water level, P for precipitation, T for the average daily temperature. In addition to establishing a general model, you can see the pattern of seepage flow,The main influence factors can be determined by correlation analysis. 4. Use 4.1 to analyze the data of three - to crack data, to conduct abnor

40、mal data processing, data hyperdifference analysis, correlation analysis, and establish statistical model. Through the analysis, the following similar conclusions can be obtained for each point: through data review, the j3-4-x test points did not find the hyperdifference data; According to the relev

41、ant analysis, the measuring instrument of the measuring point is not abnormal, and the variation of the measuring point is in normal fan enclosure, and the operation is basically normal. From the analysis results, it can be seen that there are more than 6 measurement points with more than one differ

42、ence data, and there are 3 measurement points with a small amount of super difference data, which need to be further examined by the manual. The instrument is not normal; The correlation between the relative displacement of three measuring points and the reservoir water level is not clear, the cause

43、 is unknown, and further research and analysis is needed. The analysis of the pressure observation data is analyzed, and the data is analyzed, the correlation analysis is analyzed, the statistical model is established and the potential analysis is established. Through the analysis, for each measurin

44、g point can get the similar conclusions as follows: Y3-2: point mainly by the upstream water level fluctuation and rainfall Little influence of the rain in the downstream of the dam slope infiltration of more value to the influence of uplift pressure, thus the measuring point in the rainy day is not

45、 very well reflect the reality of the dam uplift pressure. After the rain, the pressure drop slowly, also cannot reflect its true situation. After the rain, the time of the fall of the measuring point is about 15 days. The correlation between the pressure and the reservoir water level is not signifi

46、cant, indicating that the dam of the measuring point is relatively stable. There is no obvious trend of the potential of the interval from 1-1 to 2000-12-30. 4.3 the seepage around the dam observation data analysis East Zhang Shuiku automation system existing around the dam seepage monitoring point

47、5, three left shore arrangement around the dam monitoring point (RS - 2-1, RS, the rs-four), the left bank of the downstream slope decorate two around the dam monitoring points (RS - 3, RS - 5), the observed value of the former is higher than the latter the observed value of a constant. For example,

48、 the rs-1 observation value is about one constant (13m) higher than the rs-3 observation value, which is approximately one constant (24.5 m) above the rs-5 observation value. The observed values of each observation point are mainly affected by the water infiltration. In the same reservoir, the obser

49、vation value of the measured point of rain is much higher than that of the weather observation point. At the same time, the correlation between each measuring point and temperature, water temperature, reservoir water level, water level and atmospheric pressure is minimal. Above all three points, it

50、is possible to see that the rock structure on the left bank of the dam has little to go around the dam, and the structure of the rock is more reasonable. 5, epilogue dam observation data analysis is combined with computer technology to manage the observation data and the BGF, also analyzes each meas

51、uring point observation data, provide reliable references for engineering and technical personnel. Due to various factors such as time and technology, it is necessary to further study in the analysis.67 great science and technologyYear 07, 2010Analysis of the observation data of dam automation monit

52、oring system of dongzhang reservoir in fujian provinceAuthor: in English: year,Volume (period) : the number of citations: Chen huai fuqing city dongzhang reservoir administration, fujian fuqing great SCIENCE and technology, SUPER SCIENCE 2010, (7) 0 timesSimilar literature (2) 1. Journal paper, FU z

53、hi-min. Zhi-fang, FU zhifang. XIANG Yan. ZHOU zhi-fang, based on Marcs concrete dam and the dam foundation permeability coefficient inversion - water conservancy project 2005 (1)Using the commercial finite element software Marc of gm and Fortran language interface, and using the Marc anyway unit tec

54、hnology and grid refinement technology, preparation of the concrete dam seepage field is analysis program. On this basis, the use of a joint of concrete gravity dam dam foundation uplift pressure of the water level observation data of piezometer tube, using the improved genetic algorithm inversion t

55、he permeability coefficient of concrete dam and dam foundation evolution. Examples show that using the genetic algorithm - Marc inversion the permeability coefficient of concrete dam is feasible, and higher computational efficiency is the statistical analysis.2. The second periodic inspection of the

56、 safety of the dam of ansha hydropower station in the journal paper is the basic end - the dam and the safety of 2000, 14 (4)It is an important system for dam safety supervision and management. To improve the quality of missile d etection of work, ensure that the work scientific, fair and the unity

57、of the evaluation standard, perfecting the organization form of regular dam safety check, the root According to the file spirit, state power company chose Ann sand hydropower station dam as one of two missile d etection pilot, namely by the national electric power company responsible and organize to

58、 dam safety monitoring center, to carry out the inspection work on a regular basis. To this end, sand dam center of hydropower station The work of regular dam safety second check attaches great importance to, from November 1999 to start preparing, established missile d etection, careful study of pil

59、ot work method, working content and working depth. In fujian province, the organization of yongan city has held three inspection work. At the third meeting in November 2000, the expert group put forward a second periodic inspection report on the safety of the dam of ansha hydropower station. The dam was assessed as normal dam (pending approval of the report). At this point, the second periodic inspection of the safety of the dam at ansha hydropower station is basicall