Soft foundation reinforcement treatment method

Abstract

This invention discloses a method for reinforcing soft soil foundations, relating to the field of soft soil foundation reinforcement technology. Specifically, it includes the following steps: S100, mud layer preparation; S200, soil pretreatment; S300, mud base layer laying; S400, reinforcement layer laying: Following step S300, the silicate cement prepared in step S100 is laid on the surface of the mud base layer, with a thickness of 20-30 cm, and compacted using a cement vibrator; S500, drainage layer erection; S501, foundation pile erection; S600, mud top layer laying. In this soft soil foundation reinforcement method, CaO can rapidly react with water to generate Ca(OH)2, thereby neutralizing excess water in the mud. Furthermore, the generated Ca(OH)2 promotes the hydration reaction of cement mortar, improving its strength and hardening speed. The addition of CaO also enhances the effect of water-reducing agents in the cement mortar, effectively reducing the water-cement ratio and leading to better application prospects.

Description

Technical Field

[0001] This invention relates to the field of soft soil reinforcement technology, specifically a method for soft soil reinforcement treatment. Background Technology

[0002] The effectiveness of soft soil foundation reinforcement directly affects the bearing capacity of the roadbed and the operational quality of the constructed road.

[0003] The characteristics of soft soil foundations are generally manifested as silt and silty soil with high natural water content, large void ratio, and high water content, as well as general clay with low natural strength, high compressibility, and low permeability. Most soft soils have a natural water content between 30% and 70%, a void ratio of 1.0 to 1.9, a permeability coefficient of 10⁻⁸ to 10⁻⁷ cm / s, a compressibility coefficient of 0.005 to 0.02, low shear strength (rapid shear cohesion of about 10 kPa, and rapid shear internal friction angle of 0° to 5°), and exhibit thixotropy and significant rheological properties.

[0004] Given the above characteristics, drainage is extremely important for the consolidation treatment of soft soil. The primary solution to its rheological properties is to use consolidation drainage to accelerate the drying of the soft foundation. On this basis, a mud layer is applied for solidification. However, the drainage consolidation method requires construction to penetrate 8-20m into the soft soil foundation, which is intensive and time-consuming. Therefore, we propose a soft foundation reinforcement treatment method. Summary of the Invention

[0005] The purpose of this application is to provide a method for reinforcing soft soil foundations, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a method for reinforcing soft soil foundations, specifically comprising the following steps:

[0007] S100, Mud Layer Preparation: Prepare the base mud mixture by mixing cement mortar and CaO in a weight ratio of 2:0.5 in a cement mixer. At the same time, prepare silicate cement for the mud reinforcement layer.

[0008] S200 Soil pretreatment: Level the soft soil and lay a base woven fabric on the surface of the soft soil after leveling.

[0009] S300, Mud base layer laying: Mud mixture is laid on the upper layer of the base woven fabric, and the thickness of the mud base layer is 30-35cm;

[0010] S400, Reinforcement layer laying: Following step S300 above, the silicate cement prepared in step S100 is laid on the surface of the mud base layer with a thickness of 20-30cm, and then compacted by vibration with a cement vibrator.

[0011] S500, Drainage layer construction: After the reinforcement layer and mud base are compacted, non-woven fabric is laid on its surface, and a layer of sand and gravel is laid on the surface of the non-woven fabric. Perforated drainage pipes are buried in the sand and gravel layer at 2m intervals, and the ends of the drainage pipes are connected to the outside of the soft foundation area.

[0012] S501, Foundation pile erection: Simultaneously with step S500, several ground anchors are driven into the interior of the mud base layer in a rectangular array with 5m intervals, and exposed 10-15cm above the surface of the drainage layer.

[0013] S600, top layer of mud slurry: non-woven fabric is laid on the surface of the drainage layer. Then, based on steps S300 and S400, mud slurry mixture and silicate cement are laid on the top layer of non-woven fabric in sequence, and compacted by cement vibration, and waited for curing.

[0014] Preferably, the specific steps include:

[0015] S100, Mud Layer Preparation: Prepare the base mud mixture by mixing cement mortar and CaO in a weight ratio of 2:0.5 in a cement mixer. At the same time, prepare silicate cement for the mud reinforcement layer.

[0016] S200 Soil pretreatment: Level the soft soil and lay a base woven fabric on the surface of the soft soil after leveling.

[0017] S300, Mud base layer laying: Mud mixture is laid on the upper layer of the base woven fabric, and the thickness of the mud base layer is 30-35cm;

[0018] S400, Reinforcement layer laying: Following step S300 above, the silicate cement prepared in step S100 is laid on the surface of the mud base layer with a thickness of 20-30cm, and then compacted by vibration with a cement vibrator.

[0019] The thickness ratio of the mud base layer to the reinforcement layer is 2ˉ6:3ˉ7;

[0020] S500, Drainage layer construction: After the reinforcement layer and mud base are compacted, non-woven fabric is laid on its surface, and a layer of sand and gravel is laid on the surface of the non-woven fabric. Perforated drainage pipes are buried in the sand and gravel layer at 2m intervals, and the ends of the drainage pipes are connected to the outside of the soft foundation area.

[0021] The thickness of the drainage layer is 8-10 cm.

[0022] S501, Foundation pile erection: Simultaneously with step S500, several ground anchors are driven into the interior of the mud base layer in a rectangular array with 5m intervals, and exposed 10-15cm above the surface of the drainage layer.

[0023] S600, top layer of mud slurry: non-woven fabric is laid on the surface of the drainage layer. Then, based on steps S300 and S400, mud slurry mixture and silicate cement are laid on the top layer of non-woven fabric in sequence, and compacted by cement vibration, and waited for curing.

[0024] Preferably, S100, mud layer preparation: prepare base mud mixture, put cement mortar and CaO into a cement mixer at a weight ratio of 2:0.5 and mix them, and at the same time prepare silicate cement for mud reinforcement layer;

[0025] S101. Preparation of silicate cement: The silicate cement specifically comprises limestone and siliceous quartz in a weight ratio of 1:1.5, which are crushed and then mixed.

[0026] S102, Clinker generation: The silicate cement raw material pretreated in step S101 is placed in a kiln and calcined to form clinker;

[0027] S103. Clinker grinding: Following the above steps, the calcined clinker is ground into powder.

[0028] S200 Soil pretreatment: Level the soft soil and lay a base woven fabric on the surface of the soft soil after leveling.

[0029] S300, Mud base layer laying: Mud mixture is laid on the upper layer of the base woven fabric, and the thickness of the mud base layer is 30-35cm;

[0030] S400, Reinforcement layer laying: Following step S300 above, the silicate cement prepared in step S100 is laid on the surface of the mud base layer with a thickness of 20-30cm, and then compacted by vibration with a cement vibrator.

[0031] S500, Drainage layer construction: After the reinforcement layer and mud base are compacted, non-woven fabric is laid on its surface, and a layer of sand and gravel is laid on the surface of the non-woven fabric. Perforated drainage pipes are buried in the sand and gravel layer at 2m intervals, and the ends of the drainage pipes are connected to the outside of the soft foundation area.

[0032] S501, Foundation pile erection: Simultaneously with step S500, several ground anchors are driven into the interior of the mud base layer in a rectangular array with 5m intervals, and exposed 10-15cm above the surface of the drainage layer.

[0033] S600, top layer of mud slurry: non-woven fabric is laid on the surface of the drainage layer. Then, based on steps S300 and S400, mud slurry mixture and silicate cement are laid on the top layer of non-woven fabric in sequence, and compacted by cement vibration, and waited for curing.

[0034] Preferably, S100, mud layer preparation: prepare base mud mixture, put cement mortar and CaO into a cement mixer at a weight ratio of 2:0.5 and mix them, and at the same time prepare silicate cement for mud reinforcement layer;

[0035] S101. Preparation of silicate cement: The silicate cement specifically comprises limestone and siliceous quartz in a weight ratio of 1:1.5, which are crushed and then mixed.

[0036] S102. Clinker generation: The silicate cement raw material pretreated in step S101 is placed in a kiln and calcined at 1300-1450℃ for 2-3 hours to form clinker.

[0037] S103. Clinker grinding: Following the above steps, the calcined clinker is ground into powder.

[0038] S200 Soil pretreatment: Level the soft soil and lay a base woven fabric on the surface of the soft soil after leveling.

[0039] S300, Mud base layer laying: Mud mixture is laid on the upper layer of the base woven fabric, and the thickness of the mud base layer is 30-35cm;

[0040] S400, Reinforcement layer laying: Following step S300 above, the silicate cement prepared in step S100 is laid on the surface of the mud base layer with a thickness of 20-30cm, and then compacted by vibration with a cement vibrator.

[0041] S500, Drainage layer construction: After the reinforcement layer and mud base are compacted, non-woven fabric is laid on its surface, and a layer of sand and gravel is laid on the surface of the non-woven fabric. Perforated drainage pipes are buried in the sand and gravel layer at 2m intervals, and the ends of the drainage pipes are connected to the outside of the soft foundation area.

[0042] S501, Foundation pile erection: Simultaneously with step S500, several ground anchors are driven into the interior of the mud base layer in a rectangular array with 5m intervals, and exposed 10-15cm above the surface of the drainage layer.

[0043] S600, top layer of mud slurry: non-woven fabric is laid on the surface of the drainage layer. Then, based on steps S300 and S400, mud slurry mixture and silicate cement are laid on the top layer of non-woven fabric in sequence, and compacted by cement vibration, and waited for curing.

[0044] Preferably, in step S100, the CaO in the mud base layer undergoes a chemical reaction with water:

[0045] CaO + H₂O → Ca(OH)₂, generating heat in the process.

[0046] Preferably, in step S400, after the mud base layer and the reinforcing layer are vibrated and compacted, the heat generated by the chemical reaction between CaO and water simultaneously reacts with the silicate cement to produce a hydration reaction.

[0047] CaO+SiO2+H2O→CaO·SiO2·xH2O.

[0048] Preferably, S100, mud layer preparation: prepare base mud mixture, put cement mortar and CaO into a cement mixer at a weight ratio of 2:0.5 and mix them, and at the same time prepare silicate cement for mud reinforcement layer;

[0049] S101. Preparation of silicate cement: The silicate cement specifically comprises limestone and siliceous quartz in a weight ratio of 1:1.5, which are crushed and then mixed.

[0050] S102. Clinker generation: The silicate cement raw material pretreated in step S101 is placed in a kiln and calcined at 1300-1450℃ for 2-3 hours to form clinker.

[0051] S103. Clinker grinding: Following the above steps, the calcined clinker is ground into powder.

[0052] S200 Soil pretreatment: Level the soft soil and lay a base woven fabric on the surface of the soft soil after leveling.

[0053] S300, Mud base layer laying: Mud mixture is laid on the upper layer of the base woven fabric, and the thickness of the mud base layer is 30-35cm;

[0054] S400, Reinforcement layer laying: Following step S300 above, the silicate cement prepared in step S100 is laid on the surface of the mud base layer with a thickness of 20-30cm, and then compacted by vibration with a cement vibrator.

[0055] S500, Top layer of mud: Non-woven fabric is laid on the surface of the reinforcement layer, and then based on steps S300 and S400, mud mixture and silicate cement are laid on the top layer of non-woven fabric in sequence, and compacted by cement vibration, and wait for curing.

[0056] Compared with the prior art, the present invention provides a method for strengthening soft soil foundations, which has the following beneficial effects:

[0057] 1. This soft soil reinforcement treatment method allows CaO to react rapidly with water to generate Ca(OH)2, thereby neutralizing excess water in the slurry. The generated Ca(OH)2 promotes the hydration reaction of cement mortar, which can improve the strength and hardening speed of cement mortar. Furthermore, the addition of CaO can enhance the effect of water-reducing agents in cement mortar, thereby effectively reducing the water-cement ratio of the mortar.

[0058] 2. This soft soil foundation reinforcement method, by setting a drainage layer, is laid between the reinforcement layer and the top layer of mud. After the top layer of mud is poured, the drainage layer can effectively dissipate the heat generated by the reaction between the mud base layer and the reinforcement layer, and at the same time, it can also play a drainage role to accelerate the drying speed of the mud.

[0059] 3. This soft soil foundation reinforcement method, through the setting of silicate cement reinforcement layer, during the slurry solidification process, the CaO in the slurry base reacts with water and releases excessive heat. In the hydration reaction after the silicate slurry is mixed, the heat generated by the CaO reaction is effectively slowed down. Detailed Implementation

[0060] To make the technical means, creative features, achieved objectives, and effects of this invention readily understandable, the invention will be further described below. Obviously, the described embodiments are merely some embodiments of this invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. Specific Implementation Example 1

[0062] To address the shortcomings of existing technologies, this invention provides a method for reinforcing soft soil foundations, specifically comprising the following steps:

[0063] S100, Mud Layer Preparation: Prepare the base mud mixture by mixing cement mortar and CaO in a weight ratio of 2:0.5 in a cement mixer. At the same time, prepare silicate cement for the mud reinforcement layer.

[0064] S200 Soil pretreatment: Level the soft soil and lay a base woven fabric on the surface of the soft soil after leveling.

[0065] S300, Mud base layer laying: Mud mixture is laid on the upper layer of the base woven fabric, and the thickness of the mud base layer is 30-35cm;

[0066] S400, Reinforcement layer laying: Following step S300 above, the silicate cement prepared in step S100 is laid on the surface of the mud base layer with a thickness of 20-30cm, and then compacted by vibration with a cement vibrator.

[0067] S600, Top layer of mud: Non-woven fabric is laid on the surface of the reinforcement layer, and then based on steps S300 and S400, mud mixture and silicate cement are laid on the top layer of non-woven fabric in sequence, and compacted by cement vibration, and wait for curing.

[0068] Specifically, in a soft soil foundation reinforcement method, the drainage layer thickness in step S500 is 8-10 cm.

[0069] Specifically, in a soft soil foundation reinforcement method, the thickness ratio of the mud base layer to the reinforcement layer is 2ˉ6:3ˉ7.

[0070] Specifically, a soft soil foundation reinforcement method, the preparation method of silicate cement in step S100 specifically includes the following steps:

[0071] S101. Preparation of silicate cement: The silicate cement specifically comprises limestone and siliceous quartz in a weight ratio of 1:1.5, which are crushed and then mixed.

[0072] S102, Clinker generation: The silicate cement raw material pretreated in step S101 is placed in a kiln and calcined to form clinker;

[0073] S103. Clinker grinding: Following the above steps, the calcined clinker is ground into powder.

[0074] Specifically, in a soft soil foundation reinforcement method, the silicate cement raw material after pretreatment in step S101 is placed in a kiln and calcined at 1300-1450℃ for 2-3 hours to form clinker.

[0075] It should be noted that the construction period is approximately 60 days when the above steps are followed. During the slurry solidification process, the CaO in the slurry base reacts with water and releases excessive heat. The heat generated by the CaO reaction is effectively slowed down in the hydration reaction after the silicate slurry is mixed. According to the test, the unconfined compressive strength is about 1.1 MPa and the compaction degree is 98.3% during the 28-day construction period.

[0076] CaO can react rapidly with water to generate Ca(OH)2, thereby neutralizing excess water in the slurry. The generated Ca(OH)2 promotes the hydration reaction of cement mortar, which can improve the strength and hardening speed of cement mortar. Furthermore, the addition of CaO can enhance the effect of water-reducing agents in cement mortar, thereby effectively reducing the water-cement ratio of the mortar. Specific Implementation Example 2

[0078] To further improve the drying speed of cement, a drainage layer is installed between the reinforcement layer and the top layer of slurry, and this embodiment is proposed:

[0079] A method for reinforcing soft soil foundations includes the following steps:

[0080] S100, Mud Layer Preparation: Prepare the base mud mixture by mixing cement mortar and CaO in a weight ratio of 2:0.5 in a cement mixer. At the same time, prepare silicate cement for the mud reinforcement layer.

[0081] S101. Preparation of silicate cement: The silicate cement specifically comprises limestone and siliceous quartz in a weight ratio of 1:1.5, which are crushed and then mixed.

[0082] S102. Clinker generation: The silicate cement raw material pretreated in step S101 is placed in a kiln and calcined at 1300-1450℃ for 2-3 hours to form clinker.

[0083] S103. Clinker grinding: Following the above steps, the calcined clinker is ground into powder.

[0084] S200 Soil pretreatment: Level the soft soil and lay a base woven fabric on the surface of the soft soil after leveling.

[0085] S300, Mud base layer laying: Mud mixture is laid on the upper layer of the base woven fabric, and the thickness of the mud base layer is 30-35cm;

[0086] S400, Reinforcement layer laying: Following step S300 above, the silicate cement prepared in step S100 is laid on the surface of the mud base layer with a thickness of 20-30cm, and then compacted by vibration with a cement vibrator.

[0087] S500, Drainage layer construction: After the reinforcement layer and mud base are compacted, non-woven fabric is laid on its surface, and a layer of sand and gravel is laid on the surface of the non-woven fabric. Perforated drainage pipes are buried in the sand and gravel layer at 2m intervals, and the ends of the drainage pipes are connected to the outside of the soft foundation area.

[0088] S501, Foundation pile erection: Simultaneously with step S500, several ground anchors are driven into the interior of the mud base layer in a rectangular array with 5m intervals, and exposed 10-15cm above the surface of the drainage layer.

[0089] S600, top layer of mud slurry: non-woven fabric is laid on the surface of the drainage layer. Then, based on steps S300 and S400, mud slurry mixture and silicate cement are laid on the top layer of non-woven fabric in sequence, and compacted by cement vibration, and waited for curing.

[0090] Specifically, in a soft soil foundation reinforcement method, the drainage layer thickness in step S500 is 8-10 cm.

[0091] Specifically, in a soft soil foundation reinforcement method, the thickness ratio of the mud base layer to the reinforcement layer is 2ˉ6:3ˉ7.

[0092] It should be noted that the construction period according to the steps proposed in this embodiment is about 55 days. During the slurry solidification process, the CaO in the slurry base reacts with water and releases excessive heat. In the hydration reaction after mixing with silicate slurry, the heat generated by the CaO reaction is effectively slowed down, and drainage is accelerated through the drainage layer. According to the test, the unconfined compressive strength is about 1.6 MPa and the compaction degree is 98.8% during the 28-day construction period.

[0093] Among them, the drainage layer laid between the reinforcement layer and the top layer of mud can effectively dissipate the heat generated by the reaction between the mud base layer and the reinforcement layer after the top layer of mud is poured, and at the same time, it can also play a drainage role to accelerate the drying speed of the mud.

[0094] Several ground anchors are driven into the interior of the mud base layer in a rectangular array with 5m intervals, and protrude 10-15cm above the surface of the drainage layer, thereby stabilizing the laying between the mud base layer and the top mud layer. Specific Implementation Example 3

[0096] In view of the specific effectiveness of the reinforcement layer, this embodiment is proposed for comparison:

[0097] Based on specific embodiments one and two, the laying of the reinforcement layer is omitted:

[0098] A method for reinforcing soft soil foundations includes the following steps:

[0099] S100, Mud Layer Preparation: Prepare the base mud mixture by mixing cement mortar and CaO in a weight ratio of 2:0.5 in a cement mixer.

[0100] S101. Preparation of silicate cement: The silicate cement specifically comprises limestone and siliceous quartz in a weight ratio of 1:1.5, which are crushed and then mixed.

[0101] S102. Clinker generation: The silicate cement raw material pretreated in step S101 is placed in a kiln and calcined at 1300-1450℃ for 2-3 hours to form clinker.

[0102] S103. Clinker grinding: Following the above steps, the calcined clinker is ground into powder.

[0103] S200 Soil pretreatment: Level the soft soil and lay a base woven fabric on the surface of the soft soil after leveling.

[0104] S300, Mud base layer laying: Mud mixture is laid on the upper layer of the base woven fabric. The thickness of the mud base layer is 30-35cm, and the mud base layer is compacted.

[0105] S400, Drainage layer construction: After the mud base layer is compacted, non-woven fabric is laid on its surface, and a layer of sand and gravel is laid on the surface of the non-woven fabric. Perforated drainage pipes are buried in the sand and gravel layer at 2m intervals, and the ends of the drainage pipes are connected to the outside of the soft foundation area.

[0106] S501, Foundation pile erection: Simultaneously with step S500, several ground anchors are driven into the interior of the mud base layer in a rectangular array with 5m intervals, and exposed 10-15cm above the surface of the drainage layer.

[0107] S600, top layer of mud slurry: non-woven fabric is laid on the surface of the drainage layer. Then, based on steps S300 and S400, mud slurry mixture and silicate cement are laid on the top layer of non-woven fabric in sequence, and compacted by cement vibration, and waited for curing.

[0108] Specifically, in a soft soil foundation reinforcement method, the drainage layer thickness in step S500 is 8-10 cm.

[0109] Specifically, in a soft soil foundation reinforcement method, the thickness ratio of the mud base layer to the reinforcement layer is 2ˉ6:3ˉ7.

[0110] It should be noted that the construction period of this embodiment is approximately 40 days. This is because in this embodiment, the mud layer is laid directly, and only a drainage layer is used to treat the mud drainage. During the mud solidification process, the CaO in the mud base layer releases too much heat, causing the mud to dry too quickly and resulting in cracking. According to the test, the unconfined compressive strength during the 28-day construction period is about 0.65 MPa, and the compaction degree is 96.3%.

[0111] Now at 500km 2 For soft soil foundation construction, a comparative example using the vacuum preloading method is presented in conjunction with the above embodiments, as shown in the table below:

[0112] Construction period Unconfined compressive strength at 28 days compaction Comparative Example 65 days 1.2 MPa 98.4％ Example 1 60 days 1.1 MPa 98.3％ Example 2 55 days 1.6Mpa 98.8％ Example 3 45 days 0.65Mpa 96.3％

[0113] In summary, this treatment method eliminates the need for deep drainage board construction and drainage as required by the vacuum preloading method, resulting in a faster construction cycle compared to the comparative method. Furthermore, it exhibits higher unconfined compressive strength within 28 days. In particular, the use of silicate reinforcement accelerates the drying speed of the slurry, and combined with the heat dissipation and drainage of the drainage layer, further shortens the entire soft soil curing construction cycle.

[0114] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A method for soft ground improvement, characterized by: Specifically, the steps include: S100, mud layer preparation: prepare the base mud mixture, mix cement mortar and CaO in a weight ratio of 2:0.5 in a cement mixer, and at the same time prepare silicate cement for the mud reinforcement layer; S200 Soil pretreatment: Level the soft soil and lay a base woven fabric on the surface of the soft soil after leveling. S300, Mud base layer laying: Mud mixture is laid on the upper layer of the base woven fabric, and the thickness of the mud base layer is 30-35cm; S400, Reinforcement layer laying: Following step S300 above, the silicate cement prepared in step S100 is laid on the surface of the mud base layer with a thickness of 20-30cm, and then compacted by vibration with a cement vibrator. S500, Drainage layer construction: After the reinforcement layer and mud base are compacted, non-woven fabric is laid on its surface, and a layer of sand and gravel is laid on the surface of the non-woven fabric. Perforated drainage pipes are buried in the sand and gravel layer at 2m intervals, and the ends of the drainage pipes are connected to the outside of the soft foundation area. S501, Foundation pile erection: Simultaneously with step S500, several ground anchors are driven into the interior of the mud base layer in a rectangular array with 5m intervals, and 10-15cm of the piles are exposed on the surface of the drainage layer. S600, top layer of mud slurry: non-woven fabric is laid on the surface of the drainage layer. Then, based on steps S300 and S400, mud slurry mixture and silicate cement are laid on the top layer of non-woven fabric in sequence, and compacted by vibration with a cement vibrator, and waited for curing. In step S100, the CaO in the mud base layer undergoes a chemical reaction with water: while generating heat; In step S400, after the mud base layer and the reinforcement layer are vibrated and compacted, the heat generated by the chemical reaction between CaO and water simultaneously reacts with the silicate cement to produce a hydration reaction. The method for preparing silicate cement described in step S100 specifically includes the following steps: S101. Preparation of silicate cement: The silicate cement specifically comprises limestone and siliceous quartz in a weight ratio of 1:1.5, which are crushed and then mixed. S102, Clinker generation: The silicate cement raw material pretreated in step S101 is placed in a kiln and calcined to form clinker; S103. Clinker grinding: Following the above steps, the calcined clinker is ground into powder. The silicate cement raw material pretreated in step S101 is placed in a kiln and calcined at 1300-1450℃ for 2-3 hours to form clinker.

2. The method for soft ground improvement according to claim 1, wherein: The thickness of the drainage layer mentioned in step S500 is 8-10cm.

3. The method for soft ground improvement according to claim 1, wherein: The thickness ratio of the mud base layer to the reinforcement layer is 2-6:3-7.