1, division of rock and soil:
(1) Soil division:
Soil differentiation
Soil name
Tool identification method
Fastening coefficient (f)
A kind of soil
1, sand; 2, slightly sticky sand; 3. Rotting plants and plant soil; 4. peat.
Dig with a shovel or hoe.
0.5~0.6
Secondary soil
1, wet clay and loess; 2. Soft alkaline soil or saline soil; 3, containing gravel, pebbles or building materials debris accumulation soil and planting soil.
Digging mainly with shovels or hoes, and some with pickaxes.
0.6 1~0.8
Three kinds of soil
1, medium-dense cohesive soil or loess; 2. Wet cohesive soil or loess containing pebbles, gravels or fragments of building materials.
Mainly with picks, a little with shovels and hoes.
0.8 1~ 1.0
Four kinds of soil
1, hard cohesive soil or loess; 2. Hardened severe saline soil; 3. Medium-dense clayey soil or loess, containing stone 10 ~ 30% and weighing less than 25kg.
All of them are planed with pickaxes, and a few are dug with crowbars.
1.0 1~ 1.5
(2) Rock division:
rock classification
Rock name
Drill holes with a light rig.
1m takes time (minutes)
Mining methods and tools
Fastening coefficient (f)
Rammel
1. Hydraulic rock containing boulders weighing less than 50kg (more than 10% by volume); 2. Sandstone and soft chalk; 3. Weakly cemented conglomerate; 4. Various unstable schists; 5. Gypsum.
Less than 3.5
Some tools are chiseled by hand, while others are excavated by blasting.
1.5 1~2.0
Subblunt stone
1, tuff and pumice; 2. Medium hardness schist; 3. Limestone; 4. Solid slate; 5. Gravel granite; 6. Sandy mica schist; 7. anhydrite.
3.5~8.5
Pneumatic pick excavation and blasting
2.0 1~8.0
Pujianshi
1, strongly weathered weak granite, gneiss and syenite; 2. Dense limestone; 3. Gravel cemented pebbles, containing pebble sediments; 4. Dolomite; 5. Solid limestone.
8.5~ 18.5
Blasting excavation
8.0 1~ 12.0
Superhard stone
1, coarse granite; 2. Very hard dolomite; 3. Andesite and basalt with weathering traces; 4. Medium-grained granite; 5. Solid quartzite; 6. Slender basalt and olivine basalt.
18.5 or above
Blasting excavation
12.0 1~25.0
Second, the mechanical soil, stone
1, mechanical earthwork quota is calculated according to three types of soil; If the actual soil type is different, the mechanical displacement in the quota shall be multiplied by the following factors:
project
Three kinds of soil
Primary and secondary soils
Four kinds of soil
Bulldozers push the earth.
1.00
0.84
1. 18
Scrapers shovel dirt.
1.00
0.84
1.26
Self-propelled scraper shovels earth.
1.00
0.86
1.09
Excavator excavation
1.00
0.84
1. 14
2. The earthwork volume is calculated according to the natural solid volume (natural square); When bulldozers and scrapers shovel uncompacted accumulated soil, they should be multiplied by 0.73 according to the three types of soil quota items.
3. When bulldozers, stonecutters, scrapers and other earth-moving trucks go uphill, when the slope is greater than 5%, the transportation distance shall be calculated by multiplying the slope length by the following coefficient.
Slope (%)
Within 10
/kloc-within 0/5
In 20 minutes.
In 25 minutes.
Coefficient number
1.75
2.00
2.25
2.50
4, mechanical excavation, according to the actual mechanical engineering quantity calculation. Where the machinery really can't dig, the earthwork volume of manual slope repair and leveling is suitable for manual excavation (at most, it shall not exceed 10% of the excavation volume), and the corresponding quota project shall be manually multiplied by 2. For mechanical excavation, the unit quantity of stonework is less than 2000m3 or the stonework excavated between piles is multiplied by the corresponding quota 1. 10.
5. Mechanical excavation should be based on soil with natural humidity. When the water content reaches or exceeds 25%, the fixed labor and machinery shall be multiplied by the coefficient1.15; When the water content exceeds 40%, it should be calculated separately.
6. This quota has comprehensively calculated the road grade and the tonnage of dump trucks, but has not considered the road surface cleaning factor in dump truck transportation. During the construction, the manpower for cleaning the road surface should be appropriately increased according to the actual situation.
7, dump truck earth-moving, according to the front shovel excavator digging, such as backhoe excavator loading, the dump truck earth-moving machine-team number multiplication coefficient is1.10; The shift multiplication factor of front shovel loader and dump truck loader is 1.20.
8. When the excavator works on the cushion, its labor and mechanical multiplication coefficient is 1.25, and the labor, materials and mechanical consumption required for laying the cushion shall be calculated separately.
9. When the average thickness of soil layer in bulldozer or scraper is less than 300mm, the coefficients of bulldozer and scraper are 1.25 and 1. 17 respectively.
10. When the loader is loaded with undisturbed soil and the bulldozer needs to be broken, the bulldozer bulldozer project is added.
1 1. Dynamic compaction method is used to strengthen the foundation on natural foundation soil or filled foundation. After a certain tamping, if it is necessary to fill the pit with foreign soil (stone) according to the design requirements, the soil (stone) backfilling work shall be carried out according to the relevant quota. This quota does not include the trial tamping work and expenses before dynamic compaction. If the design requires trial tamping, it can be calculated separately according to the design requirements.
12, and the quota does not include the construction drainage expenses below the groundwater level. If it happens, the drainage labor cost and mechanical cost shall be calculated separately according to the provisions of the construction organization design.
13, the quota of blasting stonework is compiled according to the method of hole loosening blasting, and it is not clear whether to use blasting or drilling blasting. If drilling blasting is actually used, the covering protective material should be calculated separately.
14, blasting stone quota is compiled according to the electric detonator conductive initiation. If fire detonators are used for initiation, the number of detonators remains unchanged, and the unit price is converted, and the glue line is deducted, but an additional fuse should be added (the fuse length is calculated at 2. 12m per detonator).
15. Rock blasting combines different excavation depths, slope excavation and blasting leveling. If there is granularity requirement in blasting as stipulated in the design, the added labor, materials and machinery shall be handled by both parties through consultation.
Rules for calculation of quantities 1. Artificial soil and stone products
1. Before calculating the quantity of earthwork, the following information shall be determined:
(1) Determination of soil and rock types. The classification of rock and soil should be determined by comparing the engineering geological survey data with the above-mentioned "classification of rock and soil".
(2) the rise of groundwater level;
(3) The starting and ending elevation, construction method and transportation distance of earthwork, trench and foundation pit excavation (filling);
(4) Rock excavation, blasting method, ballast removal method and transportation distance;
(5) Other relevant information.
2. General rules
(1) earthwork volume shall be subject to the natural compacted volume (m3) before excavation, and shall be calculated by Xu Ruo.
Convert according to the table below.
Virtual square volume
Natural dense volume
Compaction volume
Loose packing volume
1.00
0.77
0.67
0.83
1.30
1.00
0.87
1.08
1.50
1. 15
1.00
1.25
1.20
0.92
0.80
1.00
(2) Digging should start from the design of outdoor terrace elevation, and the depth should be calculated according to the size shown in the figure.
(3) Calculate the engineering quantity according to different soil types, excavation depth and dry and wet soil.
(4) When there is dry and wet soil in the same ditch, pit and ditch, it should be calculated separately, but when quota is adopted, it should be calculated according to the full depth of ditch, pit and ditch.
3. The site leveling quantity shall be calculated according to the following provisions:
(1) Leveling site means that the excavation and filling thickness of the construction site is within 300mm and leveled.
(2) The quantity of leveling site is 2m on each side of the external wall of the building, calculated in square meters.
4, trench, foundation pit earthwork, according to the following provisions:
(1) Division of trench and foundation pit: the trench with a width of less than 3m and a length of more than 3 times the width of the trench bottom is a trench; Earthwork foundation pit bottom area is less than 20m2 for foundation pit; If the width of the trench bottom is more than 3m, the area of the foundation pit bottom is more than 20m2, and the excavation thickness of the flat site is more than 300mm, it shall be calculated as excavation.
(2) The number of trenches shall be calculated by multiplying the trench length by the trench cross-sectional area (m2). Groove length (m), the outer wall is calculated according to the center line length of the foundation as shown in the figure; As shown in the figure, the interior wall is calculated according to the net length between the bottom width of the foundation and the working width. Groove width (m) is calculated according to the design width plus the working face width required for foundation construction. The volume of chimney with wall and chimney outside protruding wall is included in the earthwork volume of pipe trench.
(3) When digging ditches, foundation pits and earthwork, the slope shall be calculated according to the provisions of the construction organization design. If there is no clear stipulation in the construction organization design, the slope height and proportion shall be calculated according to the following table:
Table for determining slope height and proportion
classification of soils
Provisions on Slope Depth (m)
Ratio of height to width
Manual excavation
Mechanical excavation
Mine operation
Work in the pit.
Primary and secondary soils
1.20 or more
1:0.5
1:0.33
1:0.75
Three kinds of soil
1.50 or more
1:0.33
1:0.25
1:0.67
Four kinds of soil
Over 2.00
1:0.25
1:0. 10
1:0.33
Note: 1, when the soil types in the trench and foundation pit are different, it should be calculated according to the soil types, slope ratio and different soil thickness;
2. Repeated quantities at the joint shall not be deducted when calculating the quantity of sloping, and sloping can only be carried out when the requirements of sloping depth are met. The sloping height is calculated from the lower surface of the cushion to the elevation of the designed outdoor terrace.
(4) The width of working face required for foundation construction shall be calculated according to the following table:
Table of working face width required for foundation construction
Table for determining the bottom width of pipeline groove
Diameter (mm)
Cast iron pipes, steel pipes and asbestos cement pipes (mm)
Concrete, reinforced concrete, prestressed concrete pipe (mm)
50~70
600
Eight hundred
100~200
700
900
250~350
Eight hundred
1000
400~450
1000
1300
500~600
1300
1500
700~800
1600
1800
900~ 1000
1800
2000
1 100~ 1200
2000
2300
1300~ 1400
2200
2600
Note: When calculating the earthwork volume of pipe trench according to the above table, the earthwork volume that needs to be widened at the interface of various wells and pipelines will not be calculated separately; For wells with a bottom hole area greater than 20m2, the increased earthwork volume shall be incorporated into the earthwork calculation of pipe trench.
(7) The depth of pipe trench, geosyncline and foundation pit shall be calculated from the bottom of trench, pit and cushion to the outdoor terrace as shown in the figure.
5, the difference between stone excavation and blasting quantities, stone according to the following provisions:
(1) Artificial rock cutting is calculated in cubic meters according to the size shown in the figure.
(2) The blasting rock is calculated in cubic meters according to the size shown in the figure; The depth of foundation trench and foundation pit is allowed to be over-excavated: 200mm； for common stone and secondary hard stone; Ultra-hard stone150mm. Overexcavation of some rocks is incorporated into the corresponding quantity. Manual cleaning quota shall be implemented for cleaning and trimming after sandblasting.
6, backfill soil to distinguish between rammed fill, loose fill in cubic meters.
(1) Backfill volume of foundation trench and pit = excavation volume-design volume buried under outdoor terrace (including foundation cushion, column, wall foundation, column, etc. ).
(2) The volume of indoor backfill is calculated by multiplying the net area between load-bearing walls by the thickness of backfill, without deducting the volume of attached battlements and chimneys.
(3) Trench backfilling shall be calculated by subtracting the volume occupied by the external diameter of the pipeline from the excavation volume. When the external diameter of the pipeline is less than or equal to 500mm, the volume occupied by the pipeline is not deducted. When the pipe diameter exceeds 500mm, it shall be deducted according to the following table.
Unit: cubic meter/meter of pipeline length
Pipeline name
Pipe diameter (mm)
50 1~600
60 1~800
80 1~ 1000
100 1~ 1200
120 1~ 1400
steel tube
0.2 1
0.44
0.7 1
Cast iron pipe, asbestos cement pipe
0.24
0.49
0.77
Concrete, reinforced concrete, prestressed concrete pipe
0.33
0.60
0.92
1. 15
1.35
7. The amount of surplus soil transported outside and insufficient soil transported inside are calculated according to the following formula: earthwork volume = excavation volume-backfill volume. A positive value means that excess soil is transported outside, and a negative value means that no soil is transported inside.
Second, the mechanical soil, stone
1, the distance between mechanical earth moving and stone moving shall be calculated according to the following provisions:
(1) Bulldozer pushing distance: calculated according to the linear distance between the center of gravity of the excavation area and the center of gravity of the backfill area;
(2) Hauling distance of scraper: calculated from the center of gravity of excavation area to the center of gravity of unloading area plus 45m turning distance;
(3) Transportation distance of dump truck: calculated according to the shortest distance from the center of gravity of excavation area to the center of gravity of filling area (or stacking place).
2, dynamic compaction to strengthen the foundation, according to the bottom area of tamping, and according to the design requirements of tamping energy and the number of tamping per point, the corresponding quota is implemented.
3. The original soil on the construction site shall be rolled in square meters, and the filled soil shall be rolled in cubic meters, as shown in the figure.