What is the difference between consolidation curtain filling grout? 5

1.grout material.

Consolidation grouting and curtain grouting are filled with cement slurry, and the specification stipulates that the concrete strength grade shall not be less than No. 425, and the filling grouting is filled with mud or cement clay slurry;

2.Grouting pressure.

Consolidation grouting and curtain grouting belong to medium-pressure grouting, the grouting pressure is slightly higher, and the filling grouting belongs to low-pressure grouting and the pressure is generally less than that of splitting grouting without this limitation);

3.The purpose of consolidation grouting is to improve the overall stability of bedrock and enhance the mechanical strength of rock. Purpose of curtain grouting:

Bedrock seepage prevention (forming an impermeable curtain), and the irrigated body is generally bedrock; The purpose of filling and grouting is to prevent seepage of the dam body and embankment, and the irrigated body is generally the soil or gravel layer (fine sand and quicksand cannot be filled).

Also refer to:

Technical Code for Grouting of Earth Dam Body (SD266-88) Technical Code for Cement Grouting Construction of Hydraulic Buildings (SL62-94) has limited knowledge, so I know so much, I hope it can help you.

Filler grout, which is typically used for repairing, e.g. SIKADUR 752

Epoxy resin injection pulp.

Summary. 2. The role is different.

Curtain grouting of earth-rock dams: curtain grouting of earth-rock dam rock foundation, some are carried out on the top surface of the rock foundation first, and then the dam body is filled; Some are carried out in the corridor in the dam body or the dam foundation, and its advantage is that it does not interfere with the dam body filling, and the curtain can be monitored after completion, and the curtain can be recharged.

What is the difference between consolidation curtain filling grout?

Dear, hello teacher is very happy to answer for you, what I found here is 1, the definition of different consolidation grouting is the use of borehole high-grade cement slurry or chemical slurry hydraulic into the rock mass Zhongzhou Zhibi, so that it can close the cracks, strengthen the integrity of the bedrock, and enumerate to achieve the purpose of improving the strength and stiffness of the rock mass, a special grouting method to deal with faults, weak interlayers and karst caves;

Curtain grouting is a grouting project in which grout is poured into the cracks and pores of the rock mass or soil layer to form a continuous water-blocking curtain and reduce the seepage pressure by hand grinding ruler;

Filling grouting refers to the grouting of large pores and large cavities in the foundation soil filled with grout, such as the grouting of pebble layer, gravel layer, gravel layer, etc.;

2. Different curtain beating and hidden grouting of curtains: curtain grouting of the rock foundation of the earth-rock dam, some of which are carried out on the top surface of the rock foundation first, and then fill the dam body; Some are carried out in the corridor in the dam body or the dam foundation, and its advantage is that it does not interfere with the dam body filling, and the hall can monitor the curtain operation after completion, and can supplement the curtain irrigation. Troublemakers.

Consolidation grouting can improve the integrity and homogeneity of the rock mass, improve the compressive strength and elastic modulus of the rock mass, and reduce the deformation and uneven settlement of the rock mass.

Filling grouting: It can fill the gap between the lining and the surrounding rock, so that it is closely combined and stressed together, so as to give full play to the elastic impact resistance of the surrounding rock, and reduce the leakage;

Give you a reference kiss.

I hope mine can help you.

From the grout mesh.

In terms of above, the source of consolidation grouting is mainly to improve the rock bai

The physical force of the stone

Learn the indicators, adjust the ground foundation

Integrity, bearing capacity and resistance to DAO deformation. Curtain grouting is mainly to reduce the permeability of the formation, which is a commonly used anti-seepage treatment. From the construction aspect, curtain grouting is generally arranged with 1-3 rows of grouting holes, using high-pressure cement grouting or cement chemical composite grouting, while consolidation grouting is a surface control, the hole depth is generally shallow, the pressure is relatively small, from the inspection index, curtain grouting is mainly permeability, consolidation grouting is mainly sound waves, supplemented by water pressure, deformation modulus.

The difference between curtain grouting and consolidation grouting mainly lies in the following aspects:

1. The purpose of the design is different

The main purpose of the curtain is to form a cement curtain wall to prevent water seepage; The purpose of consolidation is to bond the broken rock through cement, improve its integrity, and improve the mechanical properties of the rock.

2. Different definitions:

Curtain grouting is a grouting project that pours grout into the cracks and pores of the rock mass or soil layer to form a continuous water-blocking curtain to reduce the seepage flow and reduce the osmotic pressure.

Consolidation grouting is the use of borehole to hydraulically inject high-grade cement slurry or chemical slurry into the rock mass to seal the cracks.

3. The order is different:

If there are two in the same area, the consolidation is carried out first, and the curtain is constructed after the consolidation is completed. The difference between the two is that the curtain hole is usually deeper than the consolidation hole.

Content from user: Huang Ge.

The purpose of the two designs is different, the main purpose of the curtain is to form a cement curtain wall to prevent water seepage; The purpose of consolidation is to bond the broken rock through cement, improve its integrity, and improve the mechanical properties of the rock. There is no connection, only a little connection in the construction sequence, that is, if there are two in the same area, the construction consolidation is carried out first, and the curtain is constructed after the consolidation is completed. The difference between the two is that the curtain hole is usually deeper than the consolidation hole, and the seventh section of the tunnel is grouted.

Tunnel grouting mainly refers to the grouting engineering used for the reinforcement and seepage prevention of surrounding rock or concrete (steel lining) support structure of hydraulic tunnels, shafts, inclined shafts and other underground caverns. In addition, there is also the advanced grouting of water blocking and temporary support when encountering groundwater-rich strata or very broken strata in the process of tunnel excavation; It is used to strengthen the structure and improve the prestressed grouting of the stress state. Other purposes of grouting may also be carried out in the tunnel, such as curtain grouting and deep rock mass consolidation grouting.

This section mainly describes backfill grout and surrounding rock consolidation grout. Additional information can be found in the relevant sections of Volume 2 of this Handbook.

1. General requirements for tunnel grouting.

Construction sequence. When there are multiple grouting in the same part of the tunnel, the principle of lower pressure grouting should be followed first, and then higher pressure grouting should be followed. Specifically, the construction can be carried out in the following order:

1) The grouting in the concrete lining section should be backfilled and grouting should be carried out first, and then the surrounding rock consolidation grouting should be carried out;

2) When the part is arranged with curtain grouting or high-pressure consolidation grouting, backfill grouting and surrounding rock consolidation grouting should be carried out first, and then curtain grouting or high-pressure consolidation grouting should be carried out. When the anti-seepage curtain of this part is formed by the overlap of the upper and lower layers, it is advisable to consolidate the grouting of the surrounding rock first, and it is advisable to backfill the grouting at the part (one or two inspection methods can be selected according to the engineering conditions and requirements. Drill before grouting.

What a difference! The solid junction is the pouring of the bedrock source rock under the building, and the curtain is generally the dam to prevent water leakage, and the bedrock under the dam is poured into the dam and the dam; Consolidation is a stabilizing role for the foundation of the building, and the curtain is to form a curtain line under the dam on the left and right shoulders of the dam to prevent the dam from leaking. Grouting is the most fake, generally 70% is true is true.

Contact grouting means that the building is against the bedrock, and in order to make the two closely connected, a grouting pipe is buried on the bedrock face, which is generally used in the abutment.

There is no essential difference between them. It's just that the form of grout is different.