Underground water control and earth excavation method in underground drainage pipe treatment process

Abstract

The invention relates to the technical field of foundation pit construction of drainage pipe network comprehensive treatment engineering, and discloses an underground water control and earth excavation method in the underground drainage pipe treatment process, which comprises the following steps of: firstly, collecting data through geological and hydrological survey, and then designing and implementing an underground water control system comprising a drainage ditch and a water-collecting well; meanwhile, a supporting structure and monitoring equipment are installed to ensure the stability of soil in the foundation pit excavation process, and underground water control measures are adjusted according to real-time monitoring data to adapt to the water level change, the advanced underground detection technology and a real-time monitoring system are combined, environment-friendly materials and automatic equipment are used for constructing an underground water control system, and the underground water quality is improved. And through dynamic adjustment measures, accurate decision making and quick response, the environmental friendliness and safety of the project are ensured, and the construction efficiency and economical efficiency are also improved.

Description

Technical Field

[0001] The invention relates to the technical field of foundation pit construction for a drainage network comprehensive management project, and in particular to a method for controlling groundwater and excavating earthwork in the process of managing underground drainage pipes. Background Art

[0002] In the comprehensive management project of drainage pipe network, the control of groundwater during foundation pit excavation cannot be ignored; first of all, controlling the groundwater level helps to ensure the stability of infrastructure and avoid soil subsidence or foundation pit collapse caused by water level changes, thereby improving construction efficiency and safety. In addition, proper water level control can prevent underground facilities from being corroded due to continuous water intrusion and extend the service life of facilities such as pipe networks. At the same time, effective groundwater management can also reduce the risk of cross-contamination between surface and groundwater and protect the environment from pollution.

[0003] The Chinese invention patent with announcement number CN104762982B in the prior art book provides a construction method for controlling groundwater level in water-rich red sandstone geology. The specific steps include: construction preparation, in-depth design and optimization of light well point dewatering scheme, installation of multiple light well point dewatering devices, vacuum pump operation, commissioning pumping and pumping operation, layered earth excavation and layered dewatering, pouring cushion layers in batches, lowering branches and re-commissioning pumping, cushion layer sealing, continuous dewatering, and stopping dewatering with light well point dewatering devices. Through these steps, the groundwater level in red sandstone geology can be effectively controlled to prevent softening of red sandstone, strength reduction and earthwork collapse caused by groundwater seepage, thereby ensuring construction safety and project quality.

[0004] However, the existing technology is complex to construct and is highly dependent on geological conditions. If the preliminary exploration data is inaccurate, the designed well layout and pumping plan may not achieve the expected results, and intelligent real-time monitoring may not be possible. The construction risk is relatively high when extreme rainfall occurs. Summary of the invention

[0005] The purpose of the present invention is to provide a method for groundwater control and earth excavation in the process of underground drainage pipe management, which uses intelligent monitoring means to achieve accurate decision-making and rapid response functions.

[0006] The present invention is implemented by the following technical solution: a method for groundwater control and earth excavation in the process of underground drainage pipe management, comprising the following steps: Step S1: Conduct geological and hydrological surveys to collect data on soil structure and hydrological characteristics within the foundation pit area.

[0007] Step S2: Based on the survey results of step S1, a groundwater control system is designed, which includes drainage ditches and water collection wells.

[0008] Step S3: Carry out earth excavation and install support structures in the excavation area to maintain soil stability.

[0009] Step S4: Deploy monitoring equipment around the excavation area to monitor the water level and soil stability in real time.

[0010] Step S5: Adjust the groundwater control system according to the monitoring data to cope with the change of groundwater level.

[0011] In order to better implement the present invention, further, step S1 includes using underground radar or acoustic wave detection technology to perform soil tomography.

[0012] In order to better implement the present invention, further, the materials of the drainage ditch and the water collection well described in step S2 are environmentally friendly materials to reduce environmental impact.

[0013] In order to better implement the present invention, further, the supporting structure described in step S3 includes a waterproof membrane, a dustproof net and an anti-seismic bracket.

[0014] In order to better implement the present invention, further, the monitoring equipment described in step S4 includes a water level sensor and a soil pressure sensor.

[0015] In order to better implement the present invention, further, the adjustment step in step S5 includes starting an additional water pump to lower the water level in the specific area.

[0016] In order to better implement the present invention, further, the monitoring data described in step S5 is transmitted to a central monitoring station in real time via a wireless network.

[0017] In order to better implement the present invention, further, the support structure installation described in step S3 includes using mechanical automation equipment for rapid installation.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects: (1) The present invention uses advanced underground radar or acoustic wave detection technology to accurately collect geological and hydrological data, and uses real-time monitoring system water level sensors and soil pressure sensors to dynamically adjust groundwater control measures to ensure accurate decision-making and rapid response driven by data.

[0019] (2) The present invention uses environmentally friendly materials to construct a groundwater control system and maintains soil stability through supporting structures such as waterproof membranes, dustproof nets and earthquake-resistant brackets, thereby reducing the impact on the environment and improving project safety.

[0020] (3) The present invention uses mechanical automation equipment to install the support structure, thereby improving construction speed and accuracy, effectively reducing labor costs, and enhancing the construction efficiency and economy of the entire project. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments with reference to the following drawings: Figure 1 It is a schematic diagram of the construction process of the present invention. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] Example 1: Figure 1 As shown, a method for groundwater control and earth excavation in the process of underground drainage pipe management includes the following steps: Step S1: Conduct geological and hydrological surveys to collect data on soil structure and hydrological characteristics within the foundation pit area.

[0024] Step S2: Based on the survey results of step S1, a groundwater control system is designed, which includes drainage ditches and water collection wells.

[0025] Step S3: Carry out earth excavation and install support structures in the excavation area to maintain soil stability.

[0026] Step S4: Deploy monitoring equipment around the excavation area to monitor the water level and soil stability in real time.

[0027] Step S5: Adjust the groundwater control system according to the monitoring data to cope with the change of groundwater level.

[0028] Step S1 includes using underground radar or acoustic wave detection technology to perform soil tomography; the materials of the drainage ditch and the water collection well in step S2 are environmentally friendly materials to reduce environmental impact; the support structure in step S3 includes a waterproof membrane, a dustproof net and an anti-seismic bracket; the monitoring equipment in step S4 includes a water level sensor and a soil pressure sensor; the adjustment step in step S5 includes starting an additional water pump to lower the water level in a specific area; the monitoring data in step S5 is transmitted to a central monitoring station in real time via a wireless network; the installation of the support structure in step S3 includes using mechanical automation equipment for rapid installation.

[0029] Example 2: Figure 1 As shown, a method for groundwater control and earth excavation in the process of underground drainage pipe management includes the following steps: Step S1: Conduct geological and hydrological surveys to collect data on soil structure and hydrological characteristics in the foundation pit area; collect and analyze previous geological survey reports, construction records, and historical hydrological data in the area. Study the geological map and soil classification map of the area to obtain a preliminary understanding of soil types and distribution; conduct field surveys of the planned construction area to observe the topography, vegetation, existing water bodies, and drainage patterns; conduct surface measurements to record the undulations of the terrain, and drill at key locations to obtain soil samples, which are used for physical and chemical analysis to determine the composition, density, permeability, and other important parameters of the soil; multiple sampling points are required at different depths according to the different layers of the soil; detailed laboratory analysis of the collected soil samples, including particle size distribution tests, permeability tests, compression tests, and moisture content determination; analyze groundwater samples to determine water quality, including pH, conductivity, organic matter content, etc.; install groundwater monitoring wells at key locations to continuously monitor water level changes variability and seasonal fluctuations; use automatic or manual water level gauges to measure water levels to assess groundwater flow direction and velocity; use geophysical methods such as underground radar (GPR), resistivity imaging or acoustic detection to evaluate underground structures in a non-destructive manner. These technologies can reveal hidden underground waterways, discontinuous soil layers and other geological anomalies; integrate all data into a comprehensive geological and hydrological report, which will describe the soil and hydrological conditions in detail and provide specific recommendations for excavation and construction work; the report includes an assessment of potential risks, such as soil instability, changes in groundwater pressure and pollution risks; through such detailed geological and hydrological surveys, the engineering team can accurately understand the underground environment of the construction site, provide a scientific basis for subsequent design and construction, and effectively avoid or reduce engineering risks.

[0030] Step S2: Based on the survey results of step S1, design a groundwater control system, which includes drainage ditches and water collection wells; determine the flow direction, depth and possible water sources of groundwater based on the geological and hydrological survey results; select the best locations for drainage ditches and water collection wells to ensure that groundwater can be effectively guided, and plan the layout and direction of drainage ditches to ensure that they correspond to the flow direction of groundwater; consider the size and depth of drainage ditches to ensure that they can carry the expected amount of water; ensure that the drainage ditches have sufficient slope so that water can flow smoothly and avoid water accumulation or blockage; determine the number and location of water collection wells, which are usually located in low-lying areas or The end of the drainage ditch; Design the depth of the sump to ensure that it can collect and store groundwater while preventing overflow due to excessive water levels in the well; Connect the drainage ditch and sump to a unified drainage system to ensure that water can flow to the predetermined discharge area, and ensure that all connection points in the system are sealed and reinforced to prevent leakage or cracks; Consider using waterproof materials on the walls and bottom of the well to prevent leakage around the well; Install a water pump in the sump to help remove accumulated water and keep the foundation pit dry; Select the appropriate type and capacity of the water pump to ensure that it can handle the possible amount of water; Schedule regular maintenance of the water pump to ensure its reliable operation. Install guardrails or gratings on the drain to prevent people or foreign objects from falling in; Ensure that all parts of the drainage system meet safety and environmental standards. Install monitoring systems, such as water level monitors, to track changes in groundwater levels to prevent overflows or other problems; schedule regular inspections and maintenance to ensure the system remains in good condition; develop emergency plans to deal with unexpected situations in extreme weather or system failures; through the design and implementation of the above steps, the groundwater control system can effectively manage groundwater, ensure the stability and safety of the foundation pit and project area, and meet environmental and safety requirements.

[0031] Step S3: Carry out earth excavation and install support structures in the excavation area to maintain soil stability; determine the excavation depth, width and shape according to engineering requirements and geological survey results, design support structures such as mixing piles, ground anchors, steel supports, etc. to ensure that they can effectively support the soil pressure after excavation, clean the site, remove all unnecessary obstacles and surface debris, set up safety fences and warning signs to ensure safe isolation of the construction area, use appropriate excavation equipment such as excavators and bulldozers, proceed layer by layer according to the designed excavation plan, always monitor the soil conditions in the excavation area, especially pay attention to changes in groundwater levels, and gradually install temporary support structures such as wooden or steel plate retaining walls during the excavation process to prevent soil collapse; in particularly soft or wet soils, flowing concrete is required to stabilize the soil; install designed permanent support structures. This may include ground anchors, steel supports or concrete support walls; ensure that all support structure connections are stable and reliable and are properly waterproofed. After the support structure is installed, backfill and compact any necessary areas; ensure that the compaction of the backfill material meets the engineering standards, inspect the excavation surface to ensure that all horizontal and vertical surfaces meet the design requirements, and make precise measurements and adjustments through laser scanning or other modern measurement technologies; install monitoring equipment such as strain gauges and inclinometers to monitor the performance of the support structure and the stability of the surrounding soil in real time; regularly inspect the support structure to ensure that its integrity is not compromised; through the implementation of these detailed steps, the safety and efficiency of earthwork excavation projects can be ensured while minimizing the impact on the environment.

[0032] Step S4: Deploy monitoring equipment around the excavation area to monitor the water level and soil stability in real time; select a water level meter suitable for monitoring the groundwater level, such as an electronic water level meter or a float water level meter; use equipment such as soil pressure gauges, inclinometers, strain gauges, etc. to monitor soil movement and pressure changes; determine the deployment location of the monitoring equipment based on the size and shape of the excavation area, as well as the sensitive areas mentioned in the geological report, to ensure that the monitoring points cover all key areas, especially those close to water bodies, where groundwater flows frequently, or where the soil structure is relatively soft; install water level meters at key points where groundwater may rise to ensure that water level changes can be accurately measured and recorded; install soil stability monitoring equipment around the excavation slopes and support structures to be able to monitor any movement or deformation in these areas; confirm Ensure that all devices are properly connected to the data logger and are waterproof and dustproof; set the threshold of the monitoring equipment. Once the data outside the normal range is detected, the system should automatically issue an alarm; combine real-time data and historical data to set reasonable alarm thresholds so that timely measures can be taken when potential risks arise; ensure that the monitoring system can automatically collect and store data for easy access and analysis at any time; conduct data analysis regularly to identify any abnormal trends or potential problems, and regularly check the functions and status of all monitoring equipment to ensure that they are always in good working conditions; replace any damaged or malfunctioning parts to ensure the accuracy and reliability of the data, and integrate the water level and soil stability monitoring system with other safety monitoring systems on site, such as video surveillance, to form a comprehensive monitoring network. Through these detailed steps, the water level and soil stability around the excavation area can be effectively monitored, and potential risks can be discovered and responded to in a timely manner, thereby ensuring the safety and efficiency of the project. This monitoring not only helps prevent accidents, but also provides important data support for the risk management of the project.

[0033] Step S5: Adjust the groundwater control system according to the monitoring data to cope with the change of groundwater level; Use the water level gauges deployed earlier to continuously monitor the groundwater level, and ensure that these monitoring devices can provide real-time data to quickly respond to any sudden water level changes. Collect and analyze water level monitoring data, pay special attention to the rapid change of water level or the situation of reaching the predetermined warning water level, and use historical data and model prediction to evaluate the future trend of groundwater level; Adjust the operating frequency, power and drainage of groundwater pumps according to the monitoring data and analysis results; If the groundwater level rises, increase the pumping frequency or use a higher power pump to control the water level; If the groundwater level drops, reduce the pumping frequency accordingly to avoid excessive intervention in the natural water level; If necessary, install additional pumping equipment or temporary drainage systems to cope with abnormal water level rise; Consider using groundwater isolation technologies, such as injection wells or impermeable walls, to control groundwater flow and distribution. Continuously monitor changes in groundwater levels and adjust control measures based on actual conditions, maintain flexibility, continuously optimize groundwater control strategies based on new data and analysis results, record all adjustment measures and implementation results, including water level data before and after water level control, pump usage and any other relevant measures, regularly report to the project management team on the effectiveness of groundwater control and any issues that require attention, ensure that on-site operators have sufficient understanding and training in the operation of the groundwater control system, hold regular training courses to educate employees on how to respond to different groundwater level changes; the effective implementation of these steps requires close collaboration among teams, timely communication and information sharing, and through real-time monitoring, data analysis and flexible adjustment strategies, the groundwater level can be effectively managed and controlled, thereby ensuring the safety and progress of the excavation project.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for controlling groundwater and excavating earth in the process of underground drainage pipe management, characterized in that: The following steps are involved: Step S1: Conduct geological and hydrological surveys to collect data on soil structure and hydrological characteristics in the foundation pit area; Step S2: designing a groundwater control system based on the survey results of step S1, the system including drainage ditches and water collection wells; Step S3: carrying out earth excavation and installing a supporting structure in the excavation area to maintain soil stability; Step S4: deploy monitoring equipment around the excavation area to monitor the water level and soil stability in real time; Step S5: Adjust the groundwater control system according to the monitoring data to cope with the change of groundwater level.

2. A method for groundwater control and earth excavation in the process of underground drainage pipe management according to claim 1, characterized in that: The step S1 includes performing soil tomography using underground radar or acoustic wave detection technology.

3. A method for groundwater control and earth excavation in the process of underground drainage pipe management according to claim 2, characterized in that: The drainage ditch and the water collection well described in step S2 are made of environmentally friendly materials to reduce environmental impact.

4. A method for controlling groundwater and excavating earth in the process of underground drainage pipe management according to claim 3, characterized in that: The supporting structure described in step S3 includes a waterproof membrane, a dustproof net and an anti-seismic bracket.

5. A method for controlling groundwater and excavating earth in the process of treating underground drainage pipes according to claim 4, characterized in that: The monitoring equipment described in step S4 includes a water level sensor and a soil pressure sensor.

6. A method for controlling groundwater and excavating earth in the process of treating underground drainage pipes according to claim 5, characterized in that: The adjustment step in step S5 includes starting an additional water pump to lower the water level in a specific area.

7. A method for controlling groundwater and excavating earth in the process of underground drainage pipe management according to claim 6, characterized in that: The monitoring data described in step S5 is transmitted in real time to a central monitoring station via a wireless network.

8. A method for controlling groundwater and excavating earth in the process of treating underground drainage pipes according to claim 7, characterized in that: The support structure installation described in step S3 includes using mechanical automation equipment for rapid installation.

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