What is the influence of soil looseness on earthwork?

Impact on earthworks:1. Affect the deployment of earthwork. 2. Affect the earthwork construction method.

3. Affect the selection of earthmoving construction machinery and the configuration of quantity.

4. Affect the construction period of earthwork construction. 5. Ultimately affect the cost of construction

Situations to consider.

The looseness of the soil refers to the soil in the natural state, after excavation, its volume increases due to looseness, although it is vibrated and tamped, it still cannot return to the original volume, this property is called the looseness of the soil.

Quantity calculation for earthworks.

It is calculated by the volume of the natural state, so the looseness of the soil must be considered when the earthwork is deployed, the transportation volume of the earthwork is calculated, the size of the soil pit and the dump is determined, and the number of earthmoving machinery and transportation tools is determined.

The above content refers to Encyclopedia - Looseness of soil.

Looseness reflects the degree of hardness to a certain extent).

Affects the deployment of earthworks.

Affects earthwork construction methods.

Affect the selection of earthmoving construction machinery and the configuration of quantity.

Affects the duration of earthwork construction.

Ultimately, it affects the cost of construction.

Backfill 10m of the pit, according to the final looseness coefficient calculation you only need the undisturbed soil is enough, obviously the remaining (10 undisturbed soil is needed to be transported, but when it is dug out, according to the initial looseness coefficient of the soil calculation, the amount of earthwork becomes.

The second floor plus the third floor is the answer you want.

Briefly describe the use of the looseness coefficient of soil.

The initial looseness coefficient KS is an important parameter for calculating earthmoving construction machinery and earthmoving vehicles, and the final looseness coefficient KS is an important parameter for calculating the amount of excavation required for site leveling elevation and filling.

Earthwork allocation, calculation of earthmoving machinery productivity and number of means of transport, etc.

Influence on earthwork construction: In the calculation of the engineering quantity of earthwork, it is calculated by the volume of the natural state, so when the earthwork is deployed, the transportation volume of the earthwork is calculated, the size of the earthwork pit and the dump is determined, and the number of earthmoving machinery and transportation tools is determined, the blind looseness of the soil must be considered.

Soil has looseness, after the excavation of the soil in the natural state, the tissue is destroyed, the volume increases due to looseness, even if it is compacted by backfilling, it still cannot recover the original volume of the nature of the wild quality called the looseness of the soil. The looseness of soil is generally expressed by the looseness coefficient.

The degree of looseness of soil is expressed by the looseness coefficient. i.e. ks=v2 v1; ks'=v3 v1 where ks--- initial looseness coefficient; ks' -- last looseness coefficient;v1--- volume of soil in its natural state (m3).; V2--- Loose volume (m3) of soil after excavation.

v3--- volume of soil after backfilling and compacting (m3).

After the excavation of natural soil, its volume increases due to looseness, and although it is vibrated and tamped, it still cannot be completely restored, which is called the looseness of soil.

The looseness of the construction project has a close relationship with the balance allocation of earthwork, the calculation of the amount of earthwork for site leveling, the calculation of the amount of abandoned earthwork after the excavation of the foundation pit (groove) and the determination of the number of earthwork vehicles.

The degree of looseness is expressed by the degree of looseness coefficient: ks=v2 v1ks'=v3 v1 where ks - initial looseness coefficient; ks'——The final looseness coefficient of Kaichongye; v1 - the judgment volume of the soil in the natural state (m3) v2 - the loose volume of the soil after excavation (m3) v3 - the volume of the soil after backfilling and compaction (m3).

Initial looseness coefficient:

Initial looseness coefficient and last looseness factor:

The volume of soil in the loose state wherein.

The volume of soil in the loose state.

The volume of the soil in the loose state --- the initial and final looseness coefficients of the soil;

v1--- volume of soil in its natural state (m3).;

v2 volume of soil in loose state (m3);

v3 The volume of the soil after compaction (m3).

Looseness has a close relationship with the balance allocation of earthwork, the calculation of the amount of earthwork for site leveling, the calculation of the amount of abandoned earthwork after the excavation of the foundation pit (groove) and the determination of the number of earthwork conveyors.

If the looseness of the soil is not too good, you can put some earthworms down to increase the looseness of the soil.

The specific application of the looseness coefficient of soil in earthworks] In earthworks, because the quantity of earthworks is calculated by the volume of the natural state, the looseness of the soil must be considered when the earthwork is adjusted, the productivity of earthmoving machinery and the number of means of transportation must be considered. When carrying out earthwork allocation, the volume of the soil in the natural state becomes larger when it is dug up and transported away, so that it is difficult to transport the engineering quantity of the party, at this time, the looseness coefficient of the soil can be calculated according to the looseness coefficient of the soil, and the engineering quantity of the transporter and the engineering quantity of the remaining party are calculated through the looseness calculation of the soil. In earthworks, the initial looseness coefficient is an important parameter for calculating earthmoving construction machinery and earthmoving vehicles, and the final looseness coefficient is an important parameter for calculating the site leveling elevation failure and the amount of excavation required when filling.

The looseness coefficient has a close relationship with the balance allocation of earthwork, the calculation of the amount of earthwork for site leveling, the calculation of the amount of abandoned earthwork after the excavation of the foundation pit (groove) and the determination of the number of earthwork conveyors.

Looseness of soil] Soil in its natural state, after excavation, its volume increases due to looseness, although it is vibrated and compacted, it still cannot return to its original volume, and this property is called the looseness of soil. The degree of looseness is expressed by the looseness coefficient, and its calculation parameters are as follows:

Influence on earthwork construction: In the calculation of the engineering quantity of earthwork, it is calculated by the volume of the natural state, so the looseness of the soil must be considered when the earthwork is deployed, the earthwork transportation volume is calculated, the size of the earthwork pit and the dump is determined, and the number of earthmoving machinery and transportation tools is determined.

Soil has looseness, after the excavation of the soil in the natural state, the tissue is destroyed, the volume increases due to looseness, even if it is compacted by backfilling, it still cannot restore the nature of the original volume called the looseness of the soil. The looseness of soil is generally expressed by the looseness coefficient.

The degree of looseness of soil is expressed by the looseness coefficient. i.e. ks=v2 v1; ks'=v3 v1 where ks--- initial looseness coefficient; ks' -- last looseness coefficient;v1--- volume of soil in its natural state (m3).; v2 -- Loose volume of soil after excavation (m3).

v3--- volume of soil after backfilling and compacting (m3).

Looseness reflects the degree of hardness to a certain extent).

Affects the deployment of earthworks.

Affects earthwork construction methods.

Affect the selection of earthmoving construction machinery and the configuration of quantity.

Affects the duration of earthwork construction.

Ultimately, it affects the cost of construction.

In the organization of construction, it is useful to calculate the amount of work.

Calculate 100 cubic meters of foundation pit earthwork, but dig it out, it is 110 cubic meters. Preparation of means of transportation, calculation of construction period, etc.

When calculating the quantity of the project, the price of loose soil and in-situ soil is not the same.

The looseness of the soil affects the cost of the project, so that you will not match the budget when calculating the earthwork, thus increasing the cost.

Looseness of soil:

In the natural state of the soil, after excavation, the volume of the soil increases due to looseness, and although it is backfilled and compacted later, it still cannot be restored, which is called the looseness of the soil.

The degree of looseness is expressed by the looseness coefficient:

ks=v2/v1

ks'=v3/v1

where ks – initial looseness coefficient;

ks'- the final looseness coefficient;

v1--- volume of soil in its natural state (m3).;

v2 -- Loose volume of soil after excavation (m3).

v3--- volume of soil after backfilling and compacting (m3).

What are the impacts on earthmoving works:

Because the quantity of earthwork is calculated by the volume in the natural state, the looseness of the soil must be considered when the earthwork is deployed, the productivity of the earthmoving machinery and the number of means of transportation, etc. Because the volume of the natural state of the soil is dug up and transported away when the earthwork is deployed, it is difficult for us to use how many trucks to transport it, at this time, there is the value of the soil's looseness, and we can calculate how many trucks we actually have to use to transport how many volumes of soil through the soil's looseness.

In earthworks, KS is an important parameter for calculating earthmoving construction machinery and earthmoving vehicles, etc., while KS'It is an important parameter for calculating the amount of excavation required for site leveling elevation and filling.

The soil in the natural state, after excavation, its volume increases due to looseness, and although it is backfilled and compacted, it can not be restored to the original volume, and this property is called the looseness of the soil.

Since the quantity of earthwork is calculated in the volume of the natural state, the looseness of the soil must be considered when the earthwork is deployed, the productivity of the earthmoving machinery and the number of means of transportation are calculated. For example, in earthworks, KS is an important parameter (KS) for calculating earthmoving construction machinery and earthmoving vehicles'It is an important parameter for calculating the amount of excavation required for site leveling elevation and filling.

In the construction process, if the earthwork of the foundation is not compacted enough, it is easy to cause collapse!

"Construction Technology of Building and Decoration Engineering" P4 The looseness of the soil is the soil in the natural state, after excavation, the tissue is destroyed, the volume is increased due to looseness, and then the love is tamped back to the sky, and it still cannot return to the original state, this phenomenon is called the looseness of the soil.

After excavation, it's easy to loosen the soil.