Granite foundation expanding agent crushing construction method

Abstract

The invention provides a granite foundation expanding agent crushing construction method. The granite foundation expanding agent crushing construction method comprises the following steps: a, carrying out detailed measurement and positioning before construction to ensure the accuracy of a drilling position, then thoroughly cleaning a construction site, removing loose soil and wastes on the surface and sundries on the granite surface layer, and ensuring that a working surface is clean and barrier-free; the environmental conditions of climate, soil and hydrology on site are collected and analyzed, and detailed risk assessment is carried out according to the properties of granite, so that sufficient preparation is made for subsequent operation. According to the granite foundation expanding agent crushing construction method, construction errors caused by inaccurate operation or environment changes are reduced. Especially in the proportion and test stage of the expanding agent HSCA, the technical scheme can be optimized according to different temperature conditions, so that the controllability of the reaction process of the expanding agent is ensured, and too fast reaction caused by high temperature is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of granite crushing construction, specifically to the construction method of expanding agent crushing for granite foundation. Background Technique

[0002] The HSCA crushing construction method for granite foundation is an innovative construction method that uses the chemical expanding agent HSCA to react with water to generate volume expansion and static expansion force to crush granite. Its basic structure includes: First, drill holes in the granite, then mix the HSCA expanding agent with water and pour it into the holes, and use the expansion pressure and static expansion force generated by its reaction to damage the structure of the granite. When these forces exceed the yield strength of the granite, the cracks inside the rock gradually expand, eventually leading to overall crushing. Compared with traditional mechanical crushing and blasting methods, this method has significant advantages, including no noise and dust pollution, and can achieve higher crushing efficiency and better safety.

[0003] Although the HSCA crushing construction method for granite foundation has high construction efficiency and environmental protection, there are still some defects. The reaction rate of the expanding agent HSCA is greatly affected by temperature, which may cause the reaction to be too fast under high-temperature weather conditions, thereby affecting the construction control accuracy. Although this method greatly reduces the negative impact of blasting and mechanical crushing on the environment, it has high precision requirements in the early stage of construction and material selection, which is easy to cause unnecessary time and material waste. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a construction method of expanding agent crushing for granite foundation, which solves the problems that the reaction rate of the expanding agent is greatly affected by temperature and it is easy to affect the construction control accuracy under high-temperature weather conditions; and has high precision requirements in the early stage of construction and material selection, which is easy to cause unnecessary time and material waste.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: The construction method of expanding agent crushing for granite foundation includes:

[0006] a. Conduct detailed pre-construction measurement and positioning to ensure the accuracy of the drilling position, then thoroughly clean the construction site, remove the loose soil, waste and debris on the surface of the granite, ensure that the working surface is clean and unobstructed, collect and analyze the environmental conditions of the climate, soil and hydrology on the site, and conduct a detailed risk assessment according to the properties of the granite to make full preparations for subsequent operations;

[0007] b. Conduct different proportioning tests of the expanding agent HSCA, analyze its reaction rate and effect under different temperature conditions, and determine the most suitable proportioning scheme;

[0008] c. According to the construction plan and design drawings, use precise drilling equipment to drill the granite. After drilling, use high-pressure air to thoroughly remove the debris in the holes to ensure that the reaction of the expansive agent is not interfered by pollutants;

[0009] d. Conduct a strict inspection on the completed drilled holes to ensure that the hole depth, hole spacing, and hole diameter meet the design requirements, and the hole wall is smooth without damage or cracks;

[0010] e. Quickly pour the prepared expansive agent HSCA into the cleaned holes to ensure that the expansive agent is evenly distributed without leakage;

[0011] f. Regulate the on-site temperature to ensure that the reaction process of the expansive agent is within a controllable range. Use temperature control equipment to monitor the reaction temperature in real time to avoid too fast reaction under high-temperature conditions;

[0012] g. After the reaction is completed, check the fracture cracks of the granite. Use mechanical auxiliary tools to further decompose the cracks;

[0013] h. Conduct a quality inspection on the crushed granite;

[0014] i. Clean up the fragments of the crushed granite and transport them away using appropriate transportation tools;

[0015] j. Adopt green and environmentally friendly material treatment technology to recycle the expansive agent material to ensure harmless treatment and avoid environmental pollution;

[0016] k. Use sensors and remote monitoring systems to detect the reaction process of the expansive agent to ensure that the reaction conditions do not exceed the set standards.

[0017] Preferably, the measurement and positioning are accurately carried out according to the requirements of the "Code for Acceptance of Construction Quality of Building Foundation Engineering" (GB 50202-2018).

[0018] Preferably, after step d, use quality inspection tools to re-check the holes to confirm whether they meet the quality requirements.

[0019] Preferably, the perfusion holes are promptly plugged to ensure that the expansive agent does not leak out and to avoid interference by external factors such as air and humidity during the reaction process.

[0020] Preferably, the reaction process of the expansive agent uses an intelligent monitoring system to conduct real-time data analysis to ensure that the required crushing effect is achieved.

[0021] Preferably, the auxiliary crushing uses equipment with a vibration frequency lower than 10 Hz to avoid causing additional disturbances to the surrounding environment and the foundation ground.

[0022] Preferably, the inspection in step h includes surface flatness and crushing depth.

[0023] Preferably, the detection in step k processes abnormal conditions in real time, adjusts key parameters such as the proportion of the expansive agent and the perfusion rate, and ensures the construction accuracy.

[0024] The present invention provides a construction method for breaking granite foundation with expansive agent. It has the following beneficial effects:

[0025] This construction method for breaking granite foundation with expansive agent reduces construction errors caused by inaccurate operation or environmental changes. Especially in the proportioning and testing stage of the expansive agent HSCA, this technical solution can be optimized according to different temperature conditions to ensure the controllability of the expansive agent reaction process and avoid too fast reaction due to high temperature. Through precise drilling and hole cleaning operations, combined with the use of temperature control equipment to monitor the expansive agent reaction in real time, the efficiency and accuracy of the breaking process are guaranteed, the construction quality of granite foundation breaking is ensured, and the overall construction efficiency can be greatly improved.

[0026] Through the use of green and environmentally friendly materials and waste recycling technology, it is ensured that the expansive agent materials are effectively recycled and harmlessly treated, avoiding environmental pollution. Low-frequency vibration equipment is used in the auxiliary breaking link to avoid additional disturbance to the surrounding environment and the foundation, ensuring the safety of the construction site. In addition, the real-time remote monitoring system enables abnormal conditions in the expansive agent reaction process to be detected and processed in time, further improving the safety and control accuracy of the construction process and reducing the risk of human error. Description of the Drawings

[0027] Figure 1 It is the process flow chart of the present invention. Detailed Embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Such as Figure 1As shown in the figure, the embodiment of the present invention provides a construction method for crushing granite foundation expansion agent, including: a. Conduct detailed pre-construction measurement and positioning to ensure the accuracy of the drilling positions. Then, thoroughly clean the construction site, remove the loose soil, waste, and debris on the surface of the granite rock layer, ensure that the working surface is clean and unobstructed, collect and analyze the environmental conditions of the climate, soil, and hydrology on-site, and conduct a detailed risk assessment based on the properties of the granite to make full preparations for subsequent operations. The measurement and positioning are accurately carried out in accordance with the requirements of the "Code for Acceptance of Construction Quality of Building Foundation Engineering" (GB 50202-2018).

[0030] b. Conduct different proportioning tests of the expansion agent HSCA, analyze its reaction rate and effect under different temperature conditions, and determine the most suitable proportioning scheme.

[0031] c. According to the construction plan and design drawings, use precise drilling equipment to drill the granite. After drilling, use high-pressure air to thoroughly remove the debris in the holes to ensure that the reaction of the expansion agent is not interfered by pollutants.

[0032] d. Conduct strict inspections on the completed drill holes to ensure that the hole depth, hole spacing, and hole diameter meet the design requirements, and the hole wall is smooth without damage or cracks. After step d, use quality inspection tools to re-inspect the holes to confirm whether they meet the quality requirements.

[0033] e. Quickly pour the prepared expansion agent HSCA into the cleaned holes, ensure that the expansion agent is evenly distributed without leaking holes, and promptly seal the perfusion holes to ensure that the expansion agent does not leak out and avoid being interfered by external factors such as air and humidity during the reaction process.

[0034] f. Regulate the on-site temperature to ensure that the reaction process of the expansion agent is within a controllable range. Use temperature control equipment to monitor the reaction temperature in real time to avoid too fast reaction under high-temperature conditions. The reaction process of the expansion agent uses an intelligent monitoring system to conduct real-time data analysis to ensure that it achieves the designed crushing effect.

[0035] g. After the reaction is completed, check the crushing crack situation of the granite rock, and further decompose the cracks through mechanical auxiliary tools.

[0036] h. Conduct quality inspections on the crushed granite rock. The inspections in step h include surface flatness and crushing depth.

[0037] i. Clean up the fragments of the crushed granite rock, use appropriate transportation tools to transport them away, and use equipment with a vibration frequency lower than 10 Hz for auxiliary crushing to avoid causing additional disturbances to the surrounding environment and the foundation.

[0038] j. Adopt a green and environmentally friendly material treatment technology to recycle the expansion agent material to ensure harmless treatment and avoid environmental pollution.

[0039] k. Use sensors and remote monitoring systems to detect the expansion agent reaction process to ensure that the reaction conditions do not exceed the set standards. In step k, detect and handle abnormal situations in real time, adjust the expansion agent ratio and injection rate key parameters to ensure construction accuracy.

[0040] Embodiment 2

[0041] 1. Experimental site and conditions

[0042] Construction site: The experiment was carried out in an underground construction area on a granite foundation. The depth of the granite was 3 to 6 meters, the soil type was dry sand, and the hydrological conditions were good.

[0043] Climate conditions: The temperature during construction was 30℃ to 35℃, with high humidity, which is consistent with the characteristics of a tropical climate.

[0044] 2. Expansion agent ratio test

[0045] Conduct multiple expansion agent HSCA ratio tests, the specific test parameters and results are as follows:

[0046]

[0047] According to the test data, HSCA-I expansion agent was finally selected, with a water to HSCA ratio of 1:0.24 to adapt to the climatic conditions and granite crushing requirements of the construction site.

[0048] 3. Drilling and cleaning

[0049] Drilling operation: The diameter of the drilled hole is 42mm, the depth is 1.5 meters, and each granite stone is arranged with about 9 holes, with a total drilling depth of about 405 meters. The drilling rig QA50 is used during construction, and the single hole drilling speed is 1.5 meters / hour.

[0050] Hole cleaning operation: Use high-pressure air to clean the debris in the hole to ensure that there is no dust and debris left in the hole. Each hole cleaning time is about 20 minutes.

[0051] 4. Expansion agent injection and temperature control management

[0052] Expansion agent injection: Pour the prepared expansion agent HSCA evenly into the borehole. The injection speed is controlled within 10 minutes to ensure that the expansion agent does not react prematurely during the injection process.

[0053] Temperature control management: In a construction environment of 25℃ to 35℃, the temperature in the hole is monitored in real time through temperature control equipment to ensure that the reaction speed of the expansion agent will not get out of control due to excessive temperature. The reaction effect is best when the temperature is controlled at around 30℃.

[0054] 5. Reaction and crushing

[0055] After the reaction: After 12 hours, obvious cracks began to appear on the granite surface. After 24 hours, the crack depth reached 2 - 3 cm, reaching the designed crushing depth.

[0056] Auxiliary crushing: Use low - frequency vibration equipment with a frequency of 8 Hz to further decompose the crushed granite. During the decomposition process, the equipment operates at an efficiency of 5 m 3 / h to ensure that the mechanical vibration will not cause excessive disturbance to the surrounding environment.

[0057] 6. Quality inspection and acceptance

[0058] Crushing quality: Use a laser rangefinder and a level to inspect the quality of the crushed granite. According to the test results, the surface flatness meets the design standards, and the error of the crushing depth and surface flatness does not exceed 2 mm, meeting the requirements of the "Code for Acceptance of Construction Quality of Building Foundation Engineering" (GB 50202 - 2018).

[0059] Crushed stone recycling: The crushed granite stones are screened and recycled according to size, and the recovery rate reaches over 95%.

[0060] 7. Construction results and benefits

[0061] Construction efficiency: The entire granite crushing process is completed in 7 days. Compared with the 15 days of traditional mechanical crushing, the construction period is saved by 8 days.

[0062] Economic benefits: Compared with the traditional mechanical crushing method, the HSCA expansive agent crushing method saves labor costs, equipment shift fees, and expansive agent material costs, with a direct cost savings of approximately 21,200 yuan.

[0063] 8. Environmental protection and safety measures

[0064] Environmental protection control: During the construction process, there is no noise and dust pollution. After the use of the expansive agent material, it is recycled to ensure harmless treatment and no environmental pollution.

[0065] Safety protection: All operators wear standard protective glasses, dust masks, and latex gloves. During the construction period, no accidents occurred.

[0066] 9. Summary of experimental results

[0067] Through the verification of this experimental example, the HSCA crushing construction method for granite foundation can effectively control the reaction rate of the expansive agent and ensure the accuracy of the crushing effect.

[0068] Compared with the traditional blasting and mechanical crushing methods, this construction method has higher crushing efficiency and lower construction costs.

[0069] It has good environmental protection and safety. There is no noise or dust during the construction process, and it does not cause damage to the surrounding environment.

[0070] Table 1:

[0071]

[0072]

[0073] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Granite foundation expansion agent crushing construction method, characterized in that: include: a. Carry out detailed pre-construction measurement and positioning to ensure the accuracy of the drilling position, and then thoroughly clean the construction site to remove loose soil, waste and debris on the surface of the granite to ensure that the working surface is clean and barrier-free. Collect and analyze the climate, soil and hydrological environmental conditions on site, and conduct a detailed risk assessment based on the properties of granite to make full preparations for subsequent operations; b. Conduct different ratio tests of the expansion agent HSCA, analyze its reaction rate and effect under different temperature conditions, and determine the most suitable ratio scheme; c. According to the construction plan and design drawings, use precise drilling equipment to drill holes in the granite. After drilling, use high-pressure air to completely remove debris in the hole to ensure that the expansion agent reaction is not interfered with by pollutants; d. Strictly inspect the completed drilling holes to ensure that the hole depth, hole spacing and hole diameter meet the design requirements, and the hole wall is smooth without damage or cracks; e. Quickly pour the prepared expansion agent HSCA into the cleaned hole to ensure that the expansion agent is evenly distributed without leakage; f. Regulate the on-site temperature to ensure that the reaction process of the expansion agent is within a controllable range, and use temperature control equipment to monitor the reaction temperature in real time to avoid excessive reaction under high temperature conditions; g. After the reaction is completed, check the broken cracks of the granite and further decompose the cracks using mechanical auxiliary tools; h. Carry out quality inspection on the crushed granite; i. Clean up the broken granite fragments and transport them away using appropriate transportation tools; j. Use green and environmentally friendly material processing technology to recycle the expansion agent materials to ensure harmless treatment and avoid environmental pollution; k. Use sensors and remote monitoring systems to detect the expansion agent reaction process to ensure that the reaction conditions do not exceed the set standards.

2. The granite foundation expansion agent crushing construction method according to claim 1 is characterized by: The measurement and positioning are accurately carried out in accordance with the requirements of the "Construction Quality Acceptance Standard for Building Foundation Engineering" (GB 50202-2018).

3. The granite foundation expansion agent crushing construction method according to claim 1 is characterized in that: After step d, use the quality inspection tool to check the hole again to confirm whether it meets the quality requirements.

4. The granite foundation expansion agent crushing construction method according to claim 1 is characterized in that: The injection hole is timely blocked to ensure that the expansion agent does not leak out and to avoid interference from external factors such as air and humidity during the reaction process.

5. The granite foundation expansion agent crushing construction method according to claim 1 is characterized in that: The reaction process of the expansion agent adopts an intelligent monitoring system to perform real-time data analysis to ensure that the crushing effect required by the design is achieved.

6. The granite foundation expansion agent crushing construction method according to claim 1 is characterized by: The auxiliary crushing uses equipment with a vibration frequency lower than 10 Hz to avoid causing additional disturbance to the surrounding environment and the foundation.

7. The granite foundation expansion agent crushing construction method according to claim 1 is characterized by: The inspection in step h includes surface flatness and crushing depth.

8. The granite foundation expansion agent crushing construction method according to claim 1 is characterized by: The detection described in step k processes abnormal situations in real time, adjusts the key parameters of the expansion agent ratio and the injection rate, and ensures the construction accuracy.

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