四川省水利水电建筑工程预算定额 砂石备料工程说明（Sichuan Province Water Conservancy and hydropower construction project budget preparation project that the sixth chapter of s

1、四川省水利水电建筑工程预算定额第六章 砂石备料工程说明Sichuan Province Water Conservancy and hydropower construction project budget preparation project that the sixth chapter of sandThe sixth chapter of Sichuan Province Water Conservancy and hydropower construction engineering budget quota of sand preparation engineeringExpla

2、inFirst, the quota includes natural gravel mining and processing, artificial sand mining and processing, sand and stone transportation, quarrying, processing and transportation of 43 sections.Two, this chapter quota measurement units, in addition to those marked, mining, transportation and other sec

3、tions are generally finished (square, square yards), sand and gravel processing section, according to the finished weight (ton) calculation. Conversion between units of measurement, such as no measured data, you can refer to table 6-1 data.The reference density of loose sand gravel mixture in natura

4、l sandy gravel is 1.74 tons per cubic meterNatural gravel grading gravel reference density is 1.65 tons per cubic meterThe reference density of natural sand gravel sand is 1.55 tons per cubic meterThe reference density of crushed stone and crushed stone is 1.76 tons per cubic meterThe reference dens

5、ity of crushed stones and crushed stones is 1.45 tons per cubic meterThe reference density of manufactured sand and finished sand is 1.50 tons per cubic meterThree. Specification and specification of the quota sand and gravel in this chapterSandstone: refers to gravel material, sand, gravel, gravel,

6、 aggregate and so on.Gravel material: unprocessed natural sand, gravel, or gravel.Aggregate: the aggregate of sand, gravel, and gravel that can be used for concrete preparation after processing and grading.Sand: of or less than or equal to 5 millimeters.Gravel: gravel that is graded after processing

7、 and having a particle size greater than 5 mm.Crushed stone: aggregate that is more than 5 millimeters in diameter after being broken, processed, and graded.A raw material, such as a crushed stone, that is not broken or processed.Boulder: refers to the gravel material larger than the largest particl

8、e size of the aggregate design pebbles.Block stone: refers to the length and width of each thickness of 23 times, thickness greater than 20 cm stones.Stone: refers to the length and width of each thickness of more than 3 times the thickness greater than 15 mm stones.Top stone: refers to the general

9、length of greater than 60 mm long, four edges of stone.Stone: refers to the hair stone after trimming play hogging, appearance of founder, each adjacent face orthogonal convex surface, not more than 10 mm of stone.Four, sand processing quota applicable range1. six _10 natural gravel washing quota in

10、cluding gravel screening, cleaning, transportation and storage of finished products, suitable for natural gravel processing. Such as the natural gravel field set a pre screening process, the quota should be adjusted accordingly.2. as in sand gravel stone to super size by crushing after use, shall be

11、 determined according to the construction organization design of the super size stone crushing product size requirements and crushing workshop production scale, with six _11 diameter super stone crushing quota. Broken the quota is also applicable to the middle of the gravel stone. The crushing amoun

12、t of the stones and the intermediate gravel accounts for the percentage of the total amount of finished products, and should be determined according to the design of the construction organization and the grading balance of the sand and stone.3. adoption of artificial sand processing quotaSix -13 con

13、trol gravel quota applies to separate production of gravel processing. Such as the production of crushed stone at the same time, with the production of artificial sand, the number of not more than 10%, but also the use of this quota.Six -16 control sand quota applies to separate production of artifi

14、cial sand process.Six -17 control gravel and sand quota applies to the simultaneous production of gravel and artificial sand, and sand production ratio usually more than 11% of the total processing technology.The "Ni" sign in the calculation formula of "quarrying and transporting of c

15、rushed stone raw materials" in the scale of artificial sand processing indicates the mud content of crushed stone raw materials. The six -14 section also contains stone content less than 5mm in the raw material.When the artificial aggregate processing of gravel materials containing mud N, more

16、than 5%, which exceeds 5% of the parts need to consider increasing the pre washing process, can use six -14 pre wash mud gravel quota, and take the following preparation of pre washing procedure: price coefficient for 1.22 for artificial sand gravel; 1.34.4. tons of sand mill bar steel rod consumpti

17、on, "40 kilograms /100 tons of finished products" is made according to the granite class raw materials. When the raw materials are not the same, the steel bar consumption is adjusted according to the table 6-2 coefficient (represented by the symbol "K").The limestone adjustment f

18、actor K is 0.3, and the steel bar consumption is 12 kg per 100 tons of finished productsGranite, diabase porphyrite adjustment coefficient of K1.0 steel bar consumption of 40 kilograms per 100 tons of finished productsAndesite mountain adjustment factor K is 2, steel rod consumption is 80 kg, every

19、100 tons of finished productsThe hard quartz sandstone adjustment factor K is 3, the steel bar consumption is 120 kilograms, each 100 tons of finished products5. in the processing quota of artificial sand, the production efficiency of crushing machinery shall be formulated according to medium hardne

20、ss rock. Such as the processing of rock hardness, the number of broken mechanical table according to table 6-3 coefficients to adjust.The compressive strength of medium hardness rock is 80160 (Zhao Pa), and the adjustment factor is 16. natural gravel field due to uneven grading, the need to add arti

21、ficial sand stone, and its supplementary part of artificial sand stone processing can use six -13 festival to six -15 quota.7., according to the construction organization design, such as the aggregate into the mixing tower before setting two times screening, can use six -35 section aggregate two tim

22、es sieve washing quota, calculate its process unit price. If only one of the aggregate is screened two times, the processing cost will be converted according to the proportion of the quantity.8., according to the construction organization design, sand processing plant pre screening, coarse crushing

23、workshop and finished product sieve washing distance more than 200m, should be semi-finished material transportation mode and related quota calculation unit price.Five, sand and gravel processing plant scaleThe scale of the sand processing plant is determined by the construction organization design.

24、 According to the specifications of the construction organization design, the production capacity of the sand and gravel processing plant shall be calculated according to the peak time (35 months), the monthly average aggregate requirement and other sand and gravel requirements. Gravel processing pl

25、ant production time, usually two shifts per day, peak three shifts, effective work per month, according to 360 hours. During the production of small scale sand and gravel processing plant, the effective work can be calculated at 180 hours per month.After calculating the hourly production capacity of

26、 the finished product and the loss, the hourly processing capacity of the gravel processing plant according to the feed quantity can be obtained. Accordingly, the corresponding quota shall be applied accordingly.Six, conveyor calculation unit conversionThe aggregate processing quota, belt conveyor w

27、ith "m", the amount of Taiwan and m according to the following methods of translation:The bandwidth of B=500 mm, with a length of L=30 meters, 1 meters =30The bandwidth of B=650 mm, with a length of L=50 meters, 1 meters =50The bandwidth of B=800 mm, with a length of L=75 meters, 1 meters

28、=75The bandwidth of B is larger than 1000 mm, with a length of L=100 meters, 1 meters =100Seven. Unit price calculation of sand and stone1. according to the sand preparation scheme and process to determine the construction organization design, in this chapter, the corresponding quota calculation eac

29、h processing unit, and then calculate the cumulative product price.The aggregate price is calculated from the mining, processing and transportation until the mixing bin is adjusted or connected with the mixing material conveyor.Aggregate processing process for super size gravel crushing or mud grave

30、l materials pre washing, and the aggregate needs two times of washing, the cost can be calculated according to the chapter on the quota items, Tanru aggregate product price.2. natural gravel processing process, due to the production or the need for balance of aggregate gradation between processes, i

31、ncluding grading more than expected, super size, gradation of waste material waste material, should be based on the material field exploration data and construction organization design gradation balance calculation based on the results of.When calculating the unit price of sand and stone, the cost o

32、f the waste material disposal shall be distributed according to the proportion of the total amount of processing and the total amount of aggregate. The unit price of the remaining material shall be the unit price of sand and stone at the selected treatment process. At the time of screening, the diameter of the stone scrap can be calculated according to