Linfen City, old county old county town is located in the south-central part of the ancient county, the township water supply project has been running for more than thirty years, aging facilities, insufficient pressure, leakage water phenomenon often occurs, especially in the old county township for many years of continuous development, part of the residents who live in the topography of the ridge, the water is extremely inconvenient, difficult to eat, has seriously affected the normal life of the local people, restricting the local economic development, the urgent need to implement water supply renovation project. Local economic development, there is an urgent need to implement water supply renovation project. The old county town centralized water supply project original water source 4, 1 water source for the town south of the old county on the left bank of the river 1 water wells, No. 2 ~ 4 water source for the south of the soap ditch upstream of the 0.8km of the 3 springs, the town is the south side of the heights of the construction of a volume of 80m3 storage tanks, as well as the introduction of water and water supply pipeline network.
According to the township construction planning, combined with the actual project, the transformation of the contents of the determination of: 1) No. 1 water source renovation: replacement of No. 1 source of water well pumping equipment and pressure pipe 0.502km, will be mentioned in the old town of the old county town of water supply station storage tank; 2) the new old county town of the old town of the old town of the new water supply station: is located in the town of south of the eastern highlands, the construction of the 300m3 water storage tank, dosing disinfection room of 40m2 and its ancillary facilities, and in the No. 2 water source of the old county town of water supply station: located in the town of south of the east, construction of 300m3 storage tank, 40m2 and its auxiliary Facilities, as well as in the No. 2 water diversion pipe set up after the diversion of water, An buried 0.134km diversion pipe, for the new storage tank; 3) transformation of the No. 3 water source project: 1.2km south of the town hall from the old County River corpse. Bank No. 2 spring diversion, the need to build the diversion port and diversion of water
2 townships
Gu County County set up seven townships (towns), 111 administrative villages, population of 90,000 people, with a total area of 1206km2, arable land area of 61.69 million acres. The county is mainly agricultural, the main production of wheat, corn, grains, walnuts, etc., the county's industrial base is weak, in recent years, there are part of the mining, coking industry is in the development stage, the people's standard of living is low. The old county town town governing 13 administrative villages, 76 village groups, 135 natural manor, with a total population of 2537 households 10,511 people, a total area of 124km2, arable land area of 39,865 acres, with the comprehensive development of the agricultural economy of the advantages of resources and geographical conditions. The old county township centralized water supply project is located in the old county township near the area, according to the ancient county 2013 economic plan statistics, the old county township and resident units of the total population of 7020 people. The area of cultivated land in the district is 1.42 million mu, and local farmers mainly cultivate large grain crops, and some villages have smelting and manufacturing sideline industries. The total output value of local agriculture is 51.14 million yuan per year. Per capita income of 7,103 yuan per year, the people's standard of living is low.
3 Natural Conditions
3.1 Natural Geography and Geomorphology The area around the old county town is small and the terrain changes greatly. Ground elevation between 788m ~ 884m, the natural slope drop is 1.79‰. The project area is located in the southern foothills of Lvliang Taiyue Mountain, the edge of Qingshui Basin, the entire region of gullies and ravines, high slopes and steep, belonging to the south branch of the Jian River Basin. The surface of the newborn loose sediment cover. Within the area, there are rolling mountain ranges, gullies and complex terrain, and there are four major water systems in the area, namely, Jian River, Lin River, Cai Zi River and Liu Yuan River, of which Lin River is a tributary of Qin River, and the rest of them are the first-class tributaries of Fen River and second-class tributaries of the Yellow River, with a relatively small amount of water resources storage.
3.2 Hydrology and Meteorology The project area has a warm temperate continental monsoon climate. Four distinct seasons, dry and windy in the spring, the temperature rises quickly, high temperature and rain in summer, cool and wet in the fall, cold and dry in winter. The average annual temperature in the territory of 11.8 ℃. January is the coldest, the average monthly temperature -3.6 ℃, July is the hottest, the average monthly temperature of 24.9 ℃. The highest temperature measured in the territory of 39 ℃, the lowest temperature of -23.4 ℃. Gu County, the total heat is relatively rich, the average annual sunshine amounted to 2278.8h, sunshine rate of 51.7%, the date of the first frost on October 20 or so, the final frost period on April 14 or so, the average annual frost-free period of 183 d. Precipitation in the northeast, southwest of the less than the average annual precipitation of 558.5mm, precipitation seasonal distribution of very uneven, 60% concentrated in July ~ September within three months.
4 existing water supply project overview
The old county town is located in the south-central part of the ancient county, the township water supply project has been running for more than thirty years, aging facilities, insufficient pressure, leakage of running water phenomenon often occurs, especially the township continues to develop, and part of the residents living in the topography of the ridge is higher, for many years the water is extremely inconvenient, difficult to eat water, has seriously affected the normal life of the local people, constraining the local economic development, the local economic development. Restrictions on the local economic development, the urgent need to implement water supply renovation project. The old county town centralized water supply project existing water source 4, town south of the old county river channel left bank of a water well, town south of 0.8km at the spring 1 eye and the town government south of 1.2km at the spring 2 eyes (pipeline damage is not used), the volume of 80m3 storage tank 1, as well as the introduction of water pipelines and water supply pipe network.
5 project construction necessity
Project area due to hydrology, topography, geomorphology, climatic characteristics and other natural conditions, water resources in the area is sufficient, the main water supply facilities are aging, to the local residents to bring serious inconvenience and aftermath. At present, the region's water supply capacity can not meet the increasing demand for water requirements, while the aging of the pipe network is serious, low topography of the cistern, some residents often have a faucet and put out of water, sometimes in the middle of the night to catch the water, water is extremely inconvenient, but also the existence of the water storage time is too long, drinking after getting sick. Therefore, the security of water resources has become a major constraint on local economic development, the local government has been to improve the situation of water supply tensions, to solve the problem of drinking water security as an important part of the current work. Solving the problem of drinking water is imminent and imperative. The feasibility of engineering construction is mainly manifested in the following aspects.
5.1 adequate water conditions in the old county village south of the buried depth of groundwater, rich water, water quality is good, according to the existing wells into the situation, the amount of water in the 20m3 / h, and there are three springs, respectively, the amount of water 8m3 / h, 5m3 / h, 5m3 / h. Such as to be reasonable, scientific development and utilization of the amount of water to ensure that the water demand in the district.
5.2 Government actively promote the current, governments at all levels to solve the problem of rural drinking water security as a top priority to grasp. Water source area and the beneficiary areas are in the old county town of Guxian territory, greatly reducing the contradiction of cross-regional water diversion, and the old county town party committee, the government attaches great importance to this project, the establishment of a special leading group by a person in charge, greatly promoting the development of this project.
5.3 strong support for the masses to solve the local drinking water problem of the project is the local people look forward to a long time project, the masses have a high degree of enthusiasm, have expressed strong support for the project, to do their best to ensure that the smooth implementation of the project in practical action.
5.4 construction conditions are convenient project area adjacent to the Danyun Expressway, National Highway 309 through the town, the area of township roads in all directions, convenient transportation, water, electricity, communications can be resolved along the way, the construction of the material can be purchased from the county or Linfen, construction conditions are convenient.
6 Benefit Analysis
After the implementation of this water supply renovation project, the people in the project area have avoided various diseases caused by the aging of centralized water supply and inadequate water supply and the consumption of unqualified water, and reduced the expenses of water purchase and medical costs, enhanced the health of the people, improved the living conditions, and promoted the development of the local economy.
6.1 Economic Benefit Analysis 1) Benefit Calculation. a. Saving medical expenses, per person per year, calculated at 80 yuan, *** saving expenditure of 56.16 million yuan. b. Reduced expenditure on the purchase of water, per person per year, calculated at 120 yuan, the project area **** saving water expenditure of 842,400 yuan. c. Total benefits. By the above two total benefits of 140.4 million yuan. 2) Project investment. The total investment of the project is 5.84.07 million yuan, taking into account the characteristics of the project, the investment adjustment for economic analysis is 4.08.85 million yuan, the construction period is 1 year, the rate of formation of fixed assets is 70%. 3) Cost calculation. According to the "methods and parameters" and the relevant "norms", the cost of water supply generally consists of annual depreciation, annual pipe network fund, water and water resource costs, combustion costs, pharmaceuticals, wages and benefits, maintenance costs, management fees and other costs ***9; according to the state using a weighted average of the method of calculating the comprehensive depreciation rate of 3.84%; according to the norms of the water supply project to take 2.4% of the major repairs to the base rate; according to the relevant provisions of the pipe network fund commission. According to the relevant provisions of the pipe network fund commission rate of 7% of the total investment in the pipe network, taking into account the specific circumstances of the project, do not count this; in accordance with the relevant provisions of the specific operation of the water resources and water charges for 0.1 yuan / m3; electricity price of 0.49 yuan / degree, the project's annual electricity consumption of 60,000 degrees.
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