Design and Construction of Foziling Reservoir

1From March to June, 1950, the Huaihe River Water Conservancy Bureau organized a survey of the Pi River, and proposed that two reservoirs, Foziling and Changzhuyuan (namely Xianghongdian), could be built in the east and upstream of Pi River. 1950 After the flood in July, Huaihe River Regulation Committee and relevant units, in accordance with the policy of "storing, draining and raising funds", conducted a retest of 1950+0 1 year in June. 195 1 April, the construction of foziling reservoir was determined in the master plan for Huaihe river regulation and 1952. After that, geological survey, dam site and reservoir area measurement and hydrological test were carried out. At that time, there was a lack of construction materials for multi-arch dams in China. Water conservancy experts, represented by Wang Huzhen, have solved various problems in the design and construction of multi-arch dams with a scientific attitude and the spirit of hard study. It took only three years to complete the construction task of the first reinforced concrete multi-arch dam in Asia at that time, and the construction of the reservoir trained a large number of talents for water conservancy and hydropower construction.

Foziling Reservoir is built by the Foziling Reservoir Engineering Command established by Huaihe River Regulation Committee. 195 1 10 headquarters was established in June, and personnel were mobilized from all directions. 1In July, 952, the 1st Division of Engineering and Water Conservancy of China People's Liberation Army participated in the reservoir construction. Recruit skilled workers from Jiangsu, Shanghai and other places. Migrant workers come from Huoshan County and Fuyang County. At most, 18900 people participated in the construction. 195 1 End, the road from Lu 'an to Foziling is completed. From July 1952 to September 1954, it took only 27 months to pour the dam concrete. The reservoir project adopts the original river bed diversion and is constructed in two phases, with the east bank diversion first and the west bank dam later. In the second stage, the upstream and downstream rivers are excavated at the foot of Xihetan. The river flows down from No.8, No.9 and 10 archways, and dams are built in the east. 1952 65438+1October 9th, the foundation of Foziling Dam was cleaned. /kloc-in March, the first phase of the steel sheet pile earth-rock dam was started and ended at the end of June. During the foundation cleaning and excavation, it was found that there was a fractured zone in the rock stratum on the west bank, and the axis of the dam moved down by12m, and the foundation cleaning was delayed until1March, 953. The second stage of foundation cleaning was interrupted due to leakage and flood around the dam. It was not until the beginning of 1953 and 10 that it was fully launched, and it was completed at the end of the year. 1952 concrete pouring began in early July, which was carried out in two phases. The whole project is self-operated, mainly mechanical, supplemented by manpower. The late spring cold and low temperature of 1953 were encountered in the construction, which once affected the concrete quality and pouring progress. Concrete mixing, conveying and pouring are carried out by dispersing, moving and fixing, combined with machinery and manpower at different pouring heights and positions, with strict quality control and requirements. From the end of July, 1952, the construction management and labor combination were reformed. The construction unit established the "regional production management system" and implemented the "parallel flow method", which improved the efficiency and completed the first phase of concrete pouring one month ahead of schedule. The second-stage concrete pouring has overcome the difficulties of repeated floods and dam damage. On June 6th, 1954, all concrete was poured to the height of127.46m, and the flood was successfully intercepted in July. At the end of 10, the multi-arch dam project will be completed. Foundation 947,000 cubic meters, concrete195,000 cubic meters; It consumes 53,000 tons of cement, 6,400 tons of steel, 20,500 cubic meters of wood and 340,000 cubic meters of sand and gravel, and uses 545 machines and equipment.

The dam was reinforced for the first time. On September 28th, the reservoir was emptied and the dam was built. Crack repair was completed in mid-February in 65438+June 6, and the sluice was closed for water storage in 65438+June 6. 13 ~ 16 arch reinforcement arch pouring, crack grouting, curtain grouting and consolidation grouting were basically completed by the end of September in1June. 1June, 968, dam reinforcement, steel pipe reinforcement and spillway treatment were fully accepted, and the construction met the quality requirements.

After the flood discharge of 1969 dam, from the beginning of 1970 to the end of June, the protection and consolidation grouting of key parts such as bedrock and pile 2 1 on both banks of the dam and the repair of seepage cracks on the dam surface were completed. 1975 After the flood in August, the dam reinforcement and heightening project was started in early 1982. This reinforcement was carried out under the condition of taking into account the operation, and the project was scattered. The dam heightening construction requires high quality. The temperature of new concrete should be controlled well, and the surface of old concrete should be chiseled and grooved, which is also aerial work. Some dam foundation curtain reinforcement needs underwater operation, and the construction conditions are poor. Thanks to the cooperation and support of design, construction, scientific research and production units, the construction progressed smoothly and was completed on 1984. The flood discharge, irrigation and power generation pipes 1 1 are all buried in the crib and will be constructed in two phases together with the dam. The construction is also self-operated, and the installation work is entrusted by contract. The first phase started in March 1953, and the second phase started in late February 1953 and was completed on February 8 1954. During the construction process, an inspection and supervision team will be set up to check the progress and standards, so as to make the whole installation project progress quickly and have good quality.

During the operation, it was found that the steel pipe vibrated violently, so before the flood season of 1955, a vibrating band was added to the steel pipe support, but the effect was not obvious. 1964 inspected three steel pipes in the remaining 13 ~ 15 stack, and found that the steel pipes were seriously corroded and vibrated. In August, 1965 crossed the dam reinforcement project at that time. Extend the inlet section, install emergency gates, and repair and repair the cavitation area of steel pipes; 13, 14 chimney steel pipe foundation concrete pouring, 7 ~ 10, 15 chimney five steel pipe reinforced concrete works, 7 ~ 10 chimney steel pipe entrance trash rack, etc. , basically completed in June 1968. Power plant and dam construction are carried out simultaneously. The foundation of the first phase 19 arch workshop began pouring in June 1952, and the project of 19 arch workshop was completed in September 1954. Install the first 1000 kW unit,1October 1 1 and start power transmission. 165438+1October 24th, the second 1000 kW unit was installed and put into operation. 1957 completed the second phase of three 3000 kW plant expansion projects at the beginning of this year. Two 3000 kW units installed in 19 Arch Factory and 18 Arch Factory have all generated electricity on September 30th.

The expansion plant located behind the 7 ~ 10 dam started in March of 1959 and stopped at the end of 1960. Resume work in February, 1966, the construction strength was insufficient, and it was basically completed. In order to strive for early power generation, the method of civil construction and installation is adopted. The first 10000 kW unit was put into operation in July 1967; The second 10000 kW unit was officially connected to the grid in July 1973.