What is the calculation method of earthwork backfill quantity

First look at whether the slope is graded, do not slope directly calculate the volume of the foundation pit, and then reduce the volume of the foundation pit internal components, the calculation process of the slope is similar, but pay attention to the slope of the slope. It generally depends.

Is it cable trenching and backfilling.

There is a cross-section calculation method and a grid method, depending on what kind of backfill earthwork you calculate.

Excavation: v=h(b+,Backfill:v=h(b+,h is the depth of the ditch, b is the width of the bottom of the ditch, l is the length of the ditch, isGrading factor

20% is the amount of buried equipment and materials.

Earthwork excavation. It is a key process in the early stage of the project and in the construction process. The work of loosening, crushing, excavating and transporting soil and rock. According to the nature of rock and soil, earthwork excavation is divided into earthwork excavation and stone excavation.

According to the construction environment is open, underground or underwater, earthwork excavation is divided into open excavation, hole excavation and underwater excavation. In hydraulic engineering, earthwork excavation is widely used in site leveling and slope cutting, hydraulic structures (sluices.

dams, spillways.

Hydropower plant buildings, pumping station buildings, etc.).

Excavation of underground caverns (hydraulic tunnels, underground workshops, various flat tunnels, shafts and inclined shafts), excavation and dredging of rivers, channels and ports, mining of filling materials, building stones and concrete aggregates, cofferdams.

and other temporary buildings or masonry, concrete structures, etc.

Before construction, it is necessary to follow the scale and characteristics of the project, the natural conditions such as topography, geology, hydrology, meteorology, etc., the construction diversion mode and the progress of the project.

Requirements, construction conditions, and possible construction methods, etc., study and select the excavation method. Cut-and-cover excavation includes comprehensive excavation, sub-site excavation, layered excavation and sectional excavation. Comprehensive excavation is suitable for projects with shallow excavation depth and small scope.

When the excavation range is large, it is necessary to use sub-site excavation. If the excavation depth is larger, the layered excavation is adopted, and the stone excavation is often combined with the deep hole ladder blasting (see deep hole blasting) according to the stratification layer. Sectional excavation is suitable for larger length channels, spillways and other projects.

For tunnel excavation, there are excavation methods such as full-section excavation, partial excavation and pilot tunnel method.

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The earth (stone) backfill is calculated by volume according to the size shown in the design drawing.

1) Site backfill: backfill area multiplied by average backfill thickness.

2) Indoor backfill: the net area between the main walls multiplied by the thickness of the backfill.

3) Foundation backfill: the excavation volume minus the volume of the foundation buried below the design outdoor floor (including the foundation cushion and other structures before the package).

4) Pipe trench backfill: the excavation volume minus the volume of cushion and pipe trench with a diameter greater than 200.

Whether it is excavation or backfill, it depends on what type of earthwork you have, according to different types of earthwork to choose different methods to calculate, if it is a large area of the site of excavation and backfill must be to use a square grid or triangulation, if it is a narrow strip earthwork excavation and filling must be a section method, you can choose the corresponding function of earthwork software according to different types.

Quantity of excavation = 40 (cubic meters.

Backfill quantity = cubic meters.

Quantity of spoil = (cubic meters.)

1. The excavation quantity refers to the total excavation quantity of the foundation excavation of each building (structure), various ditches, pipeline excavation, plant railway and special iron hail route excavation, road excavation outside the plant and other projects.

Cut amount = (width + height x slope factor) x height x length.

2. Earthwork backfill is the filling of construction projects, mainly including foundation filling, foundation pit (groove) or pipe ditch backfill, indoor floor backfill, outdoor site backfill leveling, etc. The engineering quantity calculation of backfill is divided into:

Indoor backfill: multiply the net area between the main wall (load-bearing wall or wall with a thickness of more than 15cm) by the average thickness of the backfill, without deducting the volume occupied by wall stacks, columns, chimneys attached to the wall, garbage channels, etc.

Trench and pit backfill: calculated according to the total amount of excavation minus the amount of masonry and pouring volume buried below the designed outdoor floor (including wall foundation, column base, cushion, etc.), v fill = v excavation - v foundation.

Pipe trench backfill: calculated by subtracting the volume of the pipeline foundation and the volume of the pipeline with a diameter of more than 500mm. Pipes of different specifications with a diameter of more than 500mm should be reduced by corresponding volume per m.

3. The amount of spoil earthwork refers to the excess earthwork that must be transported out of the construction site to the place where the pile is allowed after the project excavation and earthfill are balanced. The number of cubes is called the amount of spoil.

Spoil = amount of cut - (amount of cut - volume of foundation) final loose coefficient.

The calculation formula for the amount of earthwork excavation, backfill and spoil:

1. (width + height x slope coefficient) x height x long signal = amount of excavation.

2. Excavation amount - (excavation amount - foundation volume) Final loose coefficient = spoil.

3. Spoil x final loosening coefficient = final spoil volume.

4. The final volume of spoil divided by the loading volume = the number of cars.

Specifically, according to the given topic:

1. Excavation quantity = 40 (cubic meters.)

2. Backfill engineering quantity = cubic meters.

3. The amount of spoil engineering = (cubic meters.)

The amount of backfill in the center of the house = the net area between the main walls * the thickness of the backfill.

Floor area of the ground floor – area occupied by the main wall) * Thickness of the backfill.

S1-L medium * exterior wall thickness - l inner * interior wall thickness) * backfill thickness.

where Backfill thickness - the distance between the design outdoor floor and the indoor floor cushion.

The earth (stone) backfill is calculated by volume according to the size shown in the design drawing.

1) Site backfill: backfill area multiplied by average backfill thickness.

2) Indoor backfill: the net area between the main walls multiplied by the thickness of the backfill.

3. Foundation backfill: the excavation volume minus the volume of the foundation buried below the design outdoor floor (including the foundation cushion and other structures in its oak).

4. Pipe trench backfill: the volume of excavation minus the volume of cushion and pipe trench with a diameter greater than 200.

Compaction methods generally include rolling method, tamping method and vibration compaction method and the use of earth-moving tools for compaction. For large-area filling projects, rolling and using earth-moving tools are mostly used for compaction. For smaller areas of earthfilling, it is advisable to use tamping tools for compaction.