Urban road rainwater infiltration energy-saving and emission-saving construction method

Abstract

The invention discloses an urban road rainwater infiltration energy-saving and emission-saving construction method, and relates to the field of urban road construction. The method comprises the following steps: step 1, construction preparation: carrying out on-site investigation on a construction area, and preparing equipment and construction materials; secondly, an excavator is used for carrying out earth excavation, an excavation area is cleaned, sundries and stones are removed, an ecological retention area and an ecological permeation area are formed, earth filling is carried out, and a retention zone and a permeation zone are formed; and 3, laying a layer of filter medium at the bottoms of the retention zone and the permeation zone. By combining two technologies of ecological retention and permeation and through reasonable design and construction steps, the purposes of effective management of rainwater, energy conservation and emission reduction and environmental protection are achieved, and the system can fully play a role even under extreme weather conditions; and meanwhile, operation and maintenance are convenient, the problems of facility blockage, damage and the like are not prone to occurring in the long-term operation process, and the overall stability and functionality are better.

Description

Technical Field

[0001] The invention belongs to the field of urban road construction, and in particular relates to a construction method for energy-saving and drainage of rainwater infiltration in urban roads. Background Art

[0002] With the acceleration of urbanization, the problem of urban rainwater discharge has become increasingly prominent, and traditional rainwater discharge methods often have problems such as poor drainage and easy water accumulation, which brings inconvenience to urban transportation and residents' lives. At the same time, energy conservation and emission reduction is also an important trend in the development of today's society. How to achieve energy conservation and emission reduction in the process of rainwater discharge has become an urgent problem to be solved.

[0003] Under such a background, the construction method of rainwater infiltration and energy saving and emission reduction in urban roads came into being. This method mainly uses the principle of rainwater infiltration and filtration to treat rainwater through specific facilities and materials, thereby achieving the goal of effective rainwater discharge and energy saving and emission reduction.

[0004] The current construction methods for energy-saving and drainage saving of rainwater infiltration on urban roads fail to fully consider future urban development and changes in rainfall, which can easily lead to the facilities not being able to fully function under extreme weather conditions, and the maintenance and management are not convenient. Rainwater infiltration facilities are prone to blockage and damage during long-term operation, affecting the drainage effect. Summary of the invention

[0005] The purpose of the present invention is to provide a construction method for energy-saving and drainage-saving rainwater infiltration on urban roads to solve the existing problems: the current construction method for energy-saving and drainage-saving rainwater infiltration on urban roads fails to fully consider the future urban development and changes in rainfall, which easily leads to the inability of facilities to fully function under extreme weather conditions; and the maintenance and management are not convenient enough, and the rainwater infiltration facilities are prone to problems such as facility blockage and damage during long-term operation, affecting the drainage effect.

[0006] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a construction method for energy-saving and drainage-saving rainwater infiltration on urban roads, comprising the following steps:

[0008] Step 1: Construction preparation, conduct on-site survey of the construction area, and prepare equipment and construction materials;

[0009] Step 2: Use an excavator to excavate the earth, clean the excavated area, remove debris and stones, form ecological retention zones and infiltration zones, and fill the earth to form retention zones and infiltration zones;

[0010] Step 3: Lay a layer of filter media at the bottom of the retention zone and the permeation zone;

[0011] Step 4: Evenly lay permeable paving materials over the retention zone and the infiltration zone;

[0012] Step 5: Plant vegetation in the retention and infiltration zones;

[0013] Step 6: Set up a control system, install a rainwater well downstream of the ecological retention area and the infiltration area, install a filter inside the rainwater well, and install a submersible sewage pump at the bottom of the rainwater well;

[0014] Step 7: Install a water level meter on the side wall or top of the rainwater well, install a water quality monitor near the outlet of the rainwater well, and connect the signal lines of the water level meter and the water quality monitor to the control system.

[0015] Furthermore, the earth filling in step 2 includes the following steps:

[0016] Fill and compact in layers, and the thickness of each layer should be between 25-28cm.

[0017] Furthermore, in step three, the filter medium consists of a volcanic rock layer, a mixed sand layer, an organic matter layer and a drainage layer.

[0018] Furthermore, the volcanic rock layer has a thickness of 15 cm and an average particle size of 1.2-2 cm.

[0019] Furthermore, the thickness of the mixed sand layer is 30 cm, and the mixed sand layer consists of 50% coarse sand, 30% medium sand and 20% fine sand, the particle size of the coarse sand is 2-4 mm, the particle size of the medium sand is 1-2 mm, and the particle size of the fine sand is 0.5-1 mm.

[0020] Furthermore, the thickness of the organic matter layer is 10 cm, and the organic matter layer consists of 80% planting soil and 20% coconut bran.

[0021] Furthermore, the thickness of the drainage layer is 5 cm, and the drainage layer is composed of gravel with a particle size of 6-9 mm.

[0022] Furthermore, the permeable paving material in step 4 is permeable concrete or permeable brick.

[0023] Furthermore, the vegetation in step 5 is iris and loosestrife.

[0024] The present invention has the following beneficial effects:

[0025] The present invention combines the two technologies of ecological retention and infiltration, and achieves the goals of effective rainwater management, energy conservation and emission reduction, and environmental protection through reasonable design and construction steps. It can fully play its role even under extreme weather conditions. At the same time, it is easy to operate and maintain, and is not prone to problems such as facility blockage and damage during long-term operation, and has better overall stability and functionality. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1:

[0028] A construction method for energy-saving and drainage-saving rainwater infiltration on urban roads, specifically comprising the following steps:

[0029] Step 1: Construction preparation, conduct on-site survey of the construction area, and prepare equipment and construction materials;

[0030] Step 2: Use an excavator to excavate the earth, clean the excavated area, remove debris and stones, form ecological retention zones and infiltration zones, and fill the earth. During the filling process, fill and compact in layers, and the thickness of each layer is between 25-28cm to form retention zones and infiltration zones, thereby ensuring that the soil structure is not destroyed during the excavation and filling process and maintaining the natural permeability of the soil;

[0031] Step 3: Lay a layer of filter media at the bottom of the retention zone and the infiltration zone. During the laying process, avoid the accumulation of media or the formation of voids. After the laying is completed, compact the filter layer to ensure its stability. Before laying the filter media, you can also lay a layer of geotextile to prevent soil particles from entering the filter layer.

[0032] In this embodiment, the filter medium is composed of a volcanic rock layer, a mixed sand layer, an organic matter layer and a drainage layer to ensure effective filtration and penetration of rainwater.

[0033] The thickness of the volcanic rock layer is 15cm, and the average particle size is 1.2-2cm, which can coarsely filter and solidify microorganisms to achieve biodegradation. The thickness of the mixed sand layer is 30cm, and the mixed sand layer is composed of 50% coarse sand, 30% medium sand and 20% fine sand. The particle size of the coarse sand is 2-4mm, the particle size of the medium sand is 1-2mm, and the particle size of the fine sand is 0.5-1mm, forming a gradient filtration structure. The coarse sand is mainly used to intercept larger suspended matter, while the medium sand and fine sand further remove fine particles and pollutants. The thickness of the organic matter layer is 10cm, and the organic matter layer is composed of 80% planting soil and 20% coconut bran, which not only helps to remove organic pollutants in rainwater, but also provides nutrients for vegetation and promotes vegetation growth. The drainage layer is 5cm thick and is composed of gravel with a particle size of 6-9mm. The drainage layer at the bottom of the filter medium can collect and discharge the filtered rainwater. The gravel has good permeability and carrying capacity, which can ensure the smooth discharge of rainwater.

[0034] Step 4: Evenly lay permeable paving materials on the retention zone and the infiltration zone. The permeable paving materials can be permeable concrete or permeable bricks, so as to meet the requirements of water permeability and compressive strength, ensure that they will not be damaged under the load of vehicles and pedestrians, and at the same time play its role of water permeability and planting vegetation. After the paving is completed, the paved area needs to be maintained to avoid heavy loading or trampling during the maintenance period;

[0035] Step 5: Plant vegetation in the retention zone and infiltration zone. Here, the vegetation is specifically iris and loosestrife, which can survive and maintain a good growth state under various conditions, and help reduce rainwater runoff and improve soil permeability. Before planting, the vegetation needs to be pruned and trimmed to ensure that its root system is intact and healthy; after planting, the vegetation needs to be watered and fertilized to promote its growth;

[0036] Step six: Set up a control system, and install a rainwater well downstream of the ecological retention area and the infiltration area, install a filter inside the rainwater well, and install a submersible sewage pump at the bottom of the rainwater well. Here, a stainless steel rainwater well is used, which has strong corrosion resistance and is suitable for long-term exposure to outdoor environments. Among them, the control system adopts PLC (programmable logic controller), which has high reliability, flexible programming, and easy expansion. The control system is equipped with a touch screen human-machine interface and supports remote communication functions for remote monitoring and maintenance. This makes it easier to adjust the discharge speed and direction of rainwater to ensure that the rainwater collection and discharge process can operate stably without blockage or leakage; and during the discharge process, the pipeline system is regularly cleaned and maintained to prevent problems such as blockage and leakage;

[0037] Step 7: Install a water level gauge on the side wall or top of the rainwater well, and install a water quality monitor near the outlet of the rainwater well. The water level gauge can be an ultrasonic water level gauge or a pressure water level gauge, which makes the measurement accurate, easy to install, and simple to maintain. The signal lines of the water level gauge and the water quality monitor are connected to the control system to achieve remote monitoring and alarm. In this way, the retention, infiltration and discharge of rainwater can be monitored in real time; and in the process of rainwater collection and discharge, pay attention to controlling the discharge speed and direction of rainwater to avoid adverse effects on the surrounding environment.

[0038] After the construction is completed, a detailed maintenance plan is formulated to regularly clean and maintain the facility to ensure long-term stable operation. At the same time, an emergency plan can also be established to further enhance the facility's ability to deal with emergencies under extreme weather conditions.

[0039] The present invention achieves the goals of effective rainwater management, energy conservation and emission reduction, and environmental protection by combining the two technologies of ecological retention and infiltration through reasonable design and construction steps, and can fully play its role even under extreme weather conditions.

[0040] Embodiment 2:

[0041] A construction method for energy-saving and drainage of rainwater infiltration on urban roads. Project background: Due to the flat terrain, rainwater drainage is not smooth on the main road of a certain city, which often leads to water accumulation on the road and affects traffic. In order to improve this situation, it was decided to build a rainwater infiltration energy-saving and drainage system on both sides of the main road.

[0042] Implementation steps:

[0043] Construction preparation: Conduct on-site surveys of the construction area to confirm the location of underground pipelines and avoid construction damage. Prepare construction equipment such as excavators, loaders, rollers, dump trucks, and construction materials such as permeable concrete, volcanic rocks, mixed sand, planting soil, coconut bran, permeable bricks, irises, and loosestrife.

[0044] Excavation and filling: Use an excavator to excavate the earth to form ecological retention areas and infiltration areas. Clean the excavated area and remove debris and stones. Fill and compact in layers, with each layer of filling controlled at about 26cm to ensure that the soil structure is not damaged.

[0045] Laying of filter media: First lay a layer of geotextile at the bottom of the retention zone and the infiltration zone, then lay a 15cm thick volcanic rock layer, a 30cm thick mixed sand layer (50% coarse sand, 30% medium sand, 20% fine sand), a 10cm thick organic matter layer (80% planting soil, 20% coconut bran) and a 5cm thick drainage layer (6-9mm crushed stone) in sequence. During the laying process, pay attention to avoid the accumulation of media or the formation of cavities, and compact it after laying.

[0046] Permeable pavement: Evenly lay permeable concrete or permeable bricks above the retention zone and infiltration zone. After paving, maintain it to avoid heavy loading or trampling.

[0047] Planting: Plant irises and loosestrife in retention and infiltration zones. Prune and trim before planting to ensure that their root systems are intact and healthy. Water and fertilize after planting to promote vegetation growth.

[0048] Rainwater well, water pump and control system installation: Set up rainwater well near the rainwater outlet and install a filter inside. Install water pump and control system to ensure stable operation during rainwater collection and discharge. Clean and maintain the pipe system regularly to prevent blockage and leakage.

[0049] Monitoring equipment setup: Water level gauges and water quality monitors are installed in rainwater wells to monitor rainwater retention, infiltration and discharge in real time. The speed and direction of rainwater discharge are adjusted according to monitoring data to avoid adverse effects on the surrounding environment.

[0050] Implementation effect: After the system was built, it effectively reduced rainwater runoff on the main roads of the city, improved soil permeability, and improved the problem of road surface waterlogging. At the same time, the planting of vegetation also beautified the urban environment and improved the quality of urban ecology. In this way, energy conservation and emission reduction can be achieved during the rainwater discharge process; at the same time, the operation and maintenance of the facilities are convenient, the overall stability and functionality are better, and the facilities are not prone to blockage, damage, etc. during long-term operation.

[0051] Embodiment three:

[0052] A construction method for energy saving and drainage of rainwater infiltration on urban roads. Project background: Due to the low terrain, the roads around a certain city park often accumulate water during the rainy season, affecting the passage of tourists and the park landscape. In order to improve this situation, it was decided to build a rainwater infiltration system on the roads around the park.

[0053] Implementation steps:

[0054] Construction preparation: Conduct on-site survey of the construction area, confirm the location of underground pipelines, and prepare construction equipment and materials.

[0055] Earth excavation and filling: Use an excavator to excavate the earth to form ecological retention areas and infiltration areas. Clean the excavated area and remove debris and stones. Fill and compact in layers, and control the thickness of each layer to about 27cm.

[0056] Laying of filter media: Lay geotextile and filter media layer (volcanic rock layer, mixed sand layer, organic matter layer, drainage layer) at the bottom of the retention zone and the infiltration zone. During the laying process, pay attention to avoid media accumulation or formation of voids.

[0057] Permeable paving: permeable bricks are laid above the retention zone and infiltration zone, and maintenance is carried out after paving is completed.

[0058] Planting: Plant irises and loosestrife in retention and infiltration zones, prune and trim before planting to ensure their root systems are intact and healthy. Water and fertilize after planting.

[0059] Installation of rainwater wells, water pumps and control systems: Install rainwater wells and water pumps near the rainwater outlets on the roads around the park, and install control systems. Clean and maintain the pipe system regularly.

[0060] Monitoring equipment setup: Install water level gauges and water quality monitors in rainwater wells to monitor rainwater retention, infiltration, and discharge in real time. Adjust the speed and direction of rainwater discharge based on monitoring data.

[0061] Implementation effect: After the system was built, it effectively solved the problem of water accumulation on the roads around the park and improved soil permeability. At the same time, the planting of vegetation beautified the environment around the park and improved the tourists' experience.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A construction method for energy saving and drainage of rainwater infiltration in urban roads, characterized in that: The steps include: Step 1: Construction preparation, conduct on-site survey of the construction area, and prepare equipment and construction materials; Step 2: Use an excavator to excavate the earth, clean the excavated area, remove debris and stones, form ecological retention zones and infiltration zones, and fill the earth to form retention zones and infiltration zones; Step 3: Lay a layer of filter media at the bottom of the retention zone and the permeation zone; Step 4: Evenly lay permeable paving materials over the retention zone and the infiltration zone; Step 5: Plant vegetation in the retention and infiltration zones; Step 6: Set up a control system, install a rainwater well downstream of the ecological retention area and the infiltration area, install a filter inside the rainwater well, and install a submersible sewage pump at the bottom of the rainwater well; Step 7: Install a water level meter on the side wall or top of the rainwater well, install a water quality monitor near the outlet of the rainwater well, and connect the signal lines of the water level meter and the water quality monitor to the control system.

2. A construction method for energy saving and drainage of rainwater infiltration in urban roads according to claim 1, characterized in that: The earth filling in step 2 comprises the following steps: Fill and compact in layers, and the thickness of each layer should be between 25-28cm.

3. The construction method for energy saving and drainage of rainwater infiltration in urban roads according to claim 1 is characterized in that: In the step three, the filter medium consists of a volcanic rock layer, a mixed sand layer, an organic matter layer and a drainage layer.

4. A construction method for energy saving and drainage saving of rainwater infiltration in urban roads according to claim 3, characterized in that: The thickness of the volcanic rock layer is 15 cm, and the average particle size is 1.2-2 cm.

5. The construction method for energy saving and drainage saving of rainwater infiltration in urban roads according to claim 3 is characterized in that: The thickness of the mixed sand layer is 30 cm. The mixed sand layer consists of 50% coarse sand, 30% medium sand and 20% fine sand. The particle size of the coarse sand is 2-4 mm, the particle size of the medium sand is 1-2 mm, and the particle size of the fine sand is 0.5-1 mm.

6. The construction method for energy saving and drainage saving of rainwater infiltration in urban roads according to claim 3 is characterized in that: The thickness of the organic matter layer is 10 cm, and the organic matter layer consists of 80% of planting soil and 20% of coconut bran.

7. The construction method for energy saving and drainage saving of rainwater infiltration in urban roads according to claim 3 is characterized in that: The thickness of the drainage layer is 5 cm, and the drainage layer is composed of crushed stones with a particle size of 6-9 mm.

8. The construction method for energy saving and drainage saving of rainwater infiltration in urban roads according to claim 1 is characterized in that: In step 4, the permeable paving material is permeable concrete or permeable brick.

9. The construction method for energy saving and drainage saving of rainwater infiltration in urban roads according to claim 1 is characterized in that: The vegetation in step 5 is iris and loosestrife.