CN215038989U

CN215038989U - Preparation system of solidified soil

Info

Publication number: CN215038989U
Application number: CN202120804055.3U
Authority: CN
Inventors: 盛晓幸; 宋雪清; 刘全林
Original assignee: Shanghai Qiangjin Foundation Engineering Co Ltd
Current assignee: Shanghai Qiangjin Foundation Engineering Co Ltd
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-12-07
Anticipated expiration: 2031-04-20

Abstract

The utility model provides a solidified soil preparation system, which comprises an initial material mixing tank, a solidified agent slurry mixing station and a field mixing solidified soil mixing station which are connected in sequence; the initial material mixing barrel is used for preparing wet cohesive material slurry which cannot be directly conveyed by the screw conveyor; the curing agent slurry stirring station is connected with the initial material stirring barrel, and the wet caking material slurry and the powdery curing agent are mixed and stirred to form curing agent slurry; and the on-site mixing solidified soil stirring station is connected with the solidifying agent slurry stirring station, and the solidifying agent slurry is mixed with the soil to form on-site mixing solidified soil. The system for preparing the solidified soil of the utility model mixes the moist caking materials such as gypsum and the like into the solidified soil during preparation, can adjust the setting time of the solidified soil and adjust the pH value of the solidified soil; the slag is doped to reduce the cement consumption and greatly save the cost.

Description

Preparation system of solidified soil

Technical Field

The utility model relates to a civil engineering technical field, specificly relate to a preparation system of solidification soil.

Background

In the building engineering construction, subway construction, exploration, pile foundation, well drilling and excavation of underground foundation pit, a large amount of waste earth dregs are generated, and the waste earth dregs are a multiphase stable colloidal suspension containing clay, organic and inorganic material additives, sump oil and drill cuttings, and the components are quite complex.

The building material which can greatly develop energy conservation, soil conservation, waste utilization, environmental protection and building function improvement in China has profound historical significance, is a major measure for realizing sustainable development and is also left in the millennium industry of descendants, and soil residue soil is used as the building material after a series of treatments, and is added with a curing reinforcing agent and a drying anti-cracking agent to be used as pre-flowing state cured soil backfill.

However, in the process of mixing the solidified soil, soil materials, a curing agent and water are generally mixed and stirred at one time, and the problems that the strength of the solidified soil is insufficient, the engineering requirements cannot be met and the like often exist, and further the construction quality is influenced are solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the problem that exists among the prior art is overcome, a preparation system of solidification soil is provided.

A preparation system of solidified soil comprises an initial material mixing tank, a solidifying agent slurry mixing station and an on-site mixing solidified soil mixing station which are sequentially connected;

the initial material mixing barrel is used for preparing wet cohesive material slurry which cannot be directly conveyed by the screw conveyor;

the curing agent slurry stirring station is connected with the initial material stirring barrel, and the wet caking material slurry and the powdery curing agent are mixed and stirred to form curing agent slurry;

and the on-site mixing solidified soil stirring station is connected with the solidifying agent slurry stirring station, and the solidifying agent slurry is mixed with the soil to form on-site mixing solidified soil.

Set up stirring vane in the initial materials agitator, be provided with fixed blade on the bucket wall, the inlet tube is connected along connecting on the bucket wall, and the bucket wall is followed down and is provided with out the thick liquid mouth, connects curing agent thick liquid stirring station through the stuff pump.

The curing agent slurry mixing station comprises a mixing tank, a wet type caking property material slurry metering hopper and a curing agent ash hopper are arranged above the mixing tank, the lower reaches of the mixing tank are connected with a slurry storage tank, and the curing agent slurry mixing station is connected with a slurry pump on site to mix and supply slurry to the curing agent slurry mixing station.

The curing agent slurry stirring station is also provided with a water bucket for further diluting the curing agent slurry, and the water bucket is connected with an external water pipe.

The on-site mixing and solidifying soil stirring station comprises a stirrer, wherein a stirring blade is arranged in the stirrer; the mixer is provided with a feed inlet and a slurry inlet, the feed inlet is used for throwing undisturbed soil, the slurry inlet is used for injecting curing agent slurry, a slurry barrel is arranged above the slurry inlet, the bottom of the mixer is provided with a weighing meter, and the slurry barrel is provided with the weighing meter; the slurry barrel is connected with a curing agent slurry stirring station.

A feeding platform is arranged beside the feeding hole, and the excavator runs onto the feeding platform and directly drops soil into the feeding hole.

The feeding port is connected with a high-low conveyer belt which is used for conveying the soil to the feeding port from the ground.

The feed inlet at the tail end of the conveying belt is provided with a collecting hopper, and the collecting hopper is used for preventing soil conveyed by the conveying belt from splashing and scattering, so that the soil completely falls into the stirring barrel.

The conveyer belt initiating terminal is provided with a shale shaker, and the shale shaker is arranged in filtering the large granule impurity in earth, and the earth after the filtration mixes with the curing agent thick liquid more easily.

And a discharge valve is arranged below a stirrer of the on-site stirring and solidifying soil stirring station and used for discharging the stirred solidifying soil.

The system for preparing the solidified soil of the utility model mixes the moist caking materials such as gypsum and the like into the solidified soil during preparation, can adjust the setting time of the solidified soil and adjust the pH value of the solidified soil; the slag is doped to reduce the cement consumption and greatly save the cost.

Drawings

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments;

figure 1 is the curing agent thick liquid stirring station structure sketch map of the utility model.

Fig. 2 is a schematic view of the solidified soil stirring station of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

In this example, a moisture-based cementitious material was added to the solidified soil, and the main component of the material was natural dihydrate gypsum having a chemical formula of CaSO4 · 2H 2O. Natural dihydrate gypsum is also known as air-setting inorganic cementitious material. The gypsum is in the shape of block or lump, has cohesiveness, can be directly mixed into undisturbed soil, is not easy to stir, and can not be uniformly mixed. And the screw conveyor can not carry out material conveying, if the screw conveyor is used forcibly, the blades and the pipeline of the screw conveyor can be stuck to cause faults.

The gypsum is doped into the solidified soil, so that the setting time of the solidified soil can be shortened, the pH value of the solidified soil is adjusted, the using amount of cement is reduced or replaced, and the cost is greatly saved.

According to the scheme, referring to fig. 1, the embodiment comprises a gypsum slurry stirring barrel 1, stirring blades 11 are arranged inside the gypsum slurry stirring barrel 1, fixed blades 12 are arranged on the inner wall of the stirring barrel, and the stirring blades 11 and the fixed blades 12 interact with each other to enable stirring to be more sufficient. The material loading side of agitator sets up the slope, artifical shallow material loading. The bottom of the gypsum slurry stirring barrel 1 is provided with at least three weighing sensors, and the sensors are arranged on the same plane and used for weighing the weight of gypsum before stirring and the weight of gypsum slurry after stirring. The upper edge of the wall of the gypsum slurry stirring barrel 1 is provided with a water inlet, and the lower edge of the wall of the gypsum slurry stirring barrel 1 is provided with a gypsum slurry outlet.

The gypsum slurry outlet is connected with a gypsum slurry pump 2, and the gypsum slurry pump 2 supplies slurry to the curing agent stirring station. The upper part of the curing agent stirring station is provided with a gypsum slurry hopper 31, the gypsum slurry pump 2 is connected with and supplies slurry to the gypsum slurry hopper 31, the bottom of the gypsum slurry hopper 31 is provided with at least three weighing sensors, and the sensors are arranged on the same plane. An ash bucket 32 is further arranged at the upper part of the curing agent stirring station, powder curing agents such as slag, cement, fly ash and additives are stored in the ash bucket, and a weighing sensor is arranged at the bottom of the ash bucket 32 and used for weighing the weight of the curing agents. The upper part of the curing agent stirring station is also provided with a water bucket 33, and if the water content of the gypsum slurry directly acting on the stirring solution is insufficient, the water bucket is utilized to add water into the curing agent slurry. The bottom of the water bucket 33 is provided with a weighing sensor. The main part of the curing agent stirring station is provided with a curing agent stirring barrel 34, the curing agent stirring barrel 34 is provided with a weighing sensor, and the curing agent stirring barrel 34 is used for stirring gypsum slurry, slag, cement, fly ash, additives and the like into curing agent slurry with or without adding water. The curing agent stirring station is also provided with a slurry storage barrel 35 for storing the slurry stirred by the curing agent stirring barrel 34, and the slurry storage barrel 35 is provided with a weighing sensor. The gypsum slurry hopper 31, the ash hopper 32 and the water hopper 33 are used for supplying materials to the curing agent stirring barrel 34, and the curing agent stirring barrel 34 sends the curing agent slurry into the slurry storage barrel 35. In fig. 2, the gypsum slurry hopper 31 and the ash hopper 32 are at the same height, and the gypsum slurry hopper 31 blocks the ash hopper 32 in a side view, so that the gypsum slurry hopper 31 and the ash hopper 32 are directed to the same component.

The whole system is provided with a control cabinet, the control cabinet collects weighing data in each step, and automatic slurry mixing is carried out according to set parameter proportion.

Referring to fig. 2, the solidified soil stirring station comprises a slurry hopper 41, the solidified soil slurry of the slurry hopper 41 comes from a slurry storage barrel 35, and the slurry storage barrel 35 supplies slurry to the slurry hopper 41 through a slurry pump; the pulp hopper 41 is provided with a load cell. A solidified soil stirrer 42 is arranged below the solidified soil stirring station, a feeding hole 43 is arranged above the solidified soil stirrer 42, and the feeding hole 43 is used for feeding soil and external aggregate; the solidified soil stirrer 42 stirs the soil, the added aggregate and the solidified agent slurry together to form solidified soil; the curing soil blender 42 is provided with a load cell. A discharge port 43 connected with the solidified soil stirrer 42 is arranged below the solidified soil stirring station, and a discharge valve is arranged at the discharge port 43.

And a material conveying pipe is connected below the discharge valve and is connected with a concrete pump, and solidified soil is conveyed into a pile hole of the mixing pile.

Or the lower part of the discharge valve is directly connected with a concrete discharge pump truck, and the concrete discharge pump truck conveys the solidified soil to a specified construction site.

Or the lower part of the discharge valve is opened, and the solidified soil directly falls to the bottom surface for treating and backfilling soil of the foundation.

The feed port 43 feeds the soil directly through the excavator.

Or the feeding port 43 is connected with a high-low conveyer belt 44 which conveys the soil from the bottom surface to the feeding port.

The feed inlet at the tail end of the conveying belt is provided with a collecting hopper 45, and the collecting hopper is used for preventing soil conveyed by the conveying belt from splashing and scattering, so that the soil completely falls into the stirring barrel.

The starting end of the conveyor belt is provided with a vibrating screen 46 which is used for filtering large-particle impurities of soil, and the filtered soil is easier to mix with the curing agent slurry.

The manufacturing process of the solidified soil is as follows:

1) adding water to dilute the gypsum material;

putting the gypsum caking materials into a stirring barrel according to a set proportion, injecting water into the stirring barrel, stirring to prepare initial material slurry, and weighing; the weighed initial material slurry is fed into an initial material gypsum slurry hopper 31.

The main component of the gypsum cementing material is natural dihydrate gypsum with a chemical formula of CaSO4 & 2H 2O.

2) Preparing curing agent slurry;

adding a curing agent into a curing agent stirring barrel 34 according to a set proportion, simultaneously adding a set amount of gypsum slurry, and stirring to prepare curing agent slurry; the prepared curing agent slurry is fed into a slurry storage tank 35 and weighed.

In the process of preparing the curing agent slurry, water with a set proportion can be added according to the requirement.

3) Mixing soil and curing agent slurry;

the soil and the external aggregate are put into a solidified soil stirrer 42 according to a set proportion, and simultaneously, a set amount of the solidified agent slurry is put into the solidified soil stirrer to be stirred and prepared into solidified soil which is stirred on site.

The added aggregate is one or more of yellow sand and stones.

And preparing the stirred solidified soil, connecting a pipeline through a discharge valve, delivering the solidified soil out, and delivering the solidified soil into a pile hole of the stirring pile to form the composite pile. Or the lower part of the discharge valve is directly connected with a concrete discharge pump truck, and the concrete discharge pump truck conveys the solidified soil to a specified construction site. Or the lower part of the discharge valve is opened, and the solidified soil directly falls to the bottom surface for treating and backfilling soil of the foundation.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above examples, and that the foregoing examples and descriptions are illustrative only, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and the invention is intended to be limited only to the details shown and described herein. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A preparation system of solidified soil is characterized by comprising an initial material mixing tank, a solidifying agent slurry mixing station and a field mixing solidified soil mixing station which are sequentially connected;

2. The system for preparing solidified soil according to claim 1, wherein the stirring blade is arranged in the initial material stirring barrel, the fixed blade is arranged on the barrel wall, the upper edge of the barrel wall is connected with the water inlet pipe, the lower edge of the barrel wall is provided with the slurry outlet, and the slurry outlet is connected with the solidifying agent slurry stirring station through a slurry pump.

3. The system for preparing solidified soil according to claim 1, wherein the solidified soil slurry mixing station comprises a mixing tank, a wet type cohesive material slurry metering hopper and a solidified material ash hopper are arranged above the mixing tank, a slurry storage tank is connected to the downstream of the mixing tank, and the solidified soil mixing station is mixed and supplied with slurry through a slurry pump connection site.

4. The system for preparing solidified soil according to claim 1, wherein the solidifying agent slurry stirring station is further provided with a water bucket for further diluting the solidifying agent slurry, and the water bucket is connected with an external water pipe.

5. The solidified soil preparation system of claim 1, wherein the on-site mixing solidified soil mixing plant comprises a mixer, wherein a mixing blade is arranged in the mixer; the mixer is provided with a feed inlet and a slurry inlet, the feed inlet is used for throwing undisturbed soil, the slurry inlet is used for injecting curing agent slurry, a slurry barrel is arranged above the slurry inlet, the bottom of the mixer is provided with a weighing meter, and the slurry barrel is provided with the weighing meter; the slurry barrel is connected with a curing agent slurry stirring station.

6. The system for preparing solidified soil according to claim 5, wherein a loading platform is arranged beside the feeding hole, and the excavator drives to the loading platform to directly throw soil into the feeding hole.

7. The system for preparing solidified soil according to claim 5, wherein the feeding port is connected with a high-low conveyer belt for conveying soil from the ground to the feeding port.

8. The system for preparing solidified soil according to claim 7, wherein a collecting hopper is arranged at the feeding port at the tail end of the conveyer belt, and the collecting hopper is used for preventing soil conveyed by the conveyer belt from splashing and scattering, so that the soil falls into the stirring and stirring barrel completely.

9. The system for preparing solidified soil according to claim 7, wherein the starting end of the conveyor belt is provided with a vibrating screen for filtering large-particle impurities in soil, and the filtered soil is more easily mixed with the solidifying agent slurry.

10. The solidified soil preparation system of claim 5, wherein a discharge valve is arranged below the mixer of the on-site mixing solidified soil mixing plant, and the discharge valve is used for discharging the mixed solidified soil.