CN115404739A

CN115404739A - Road or airport embedded pipe arrangement structure and method for controlling temperature and dismantling

Info

Publication number: CN115404739A
Application number: CN202211210274.4A
Authority: CN
Inventors: 叶建军; 殷旭; 谭保华; 曹衎
Original assignee: Hubei University of Technology
Current assignee: Hubei University of Technology
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2022-11-29
Anticipated expiration: 2042-09-30
Also published as: CN115404739B

Abstract

The invention discloses a road or airport embedded pipe arrangement structure and a method for controlling temperature and dismantling, wherein the embedded pipe is laid on the upper part of a road or airport runway base layer or the bottom of a surface layer, the lower half part of the embedded pipe is reinforced by U-shaped cast iron, the embedded pipe can be used as a temperature control water pipe of the road or airport runway and a blast hole for dismantling and blasting a road surface in future, electromagnetic valves and temperature sensors are arranged at two ends of the embedded pipe, and a closed-loop control system is formed by taking a PLC (programmable logic controller) as a main control device, the electromagnetic valves and the temperature sensors based on a PID (proportion integration differentiation) control algorithm, so that the stability and the reliability of road temperature control are ensured according to the technology; when the road surface layer reaches the service life and needs to be removed or overhauled, the embedded pipe is adopted for blasting removal, and the stable explosion propagation and good crushing effect are ensured by using the technical means of rope line binding continuous or discontinuous explosive package, traction charging and the like; the invention applies the whole life design concept, simultaneously considers the snow removal and ice melting and cooling of the road or the airport runway and the future pavement demolition and blasting, and can bring good economic and social benefits.

Description

Road or airport embedded pipe arrangement structure and method for controlling temperature and dismantling

Technical Field

The invention relates to the technical fields of road snow and ice melting, cooling, electrified temperature automatic control systems, blasting demolition and the like, in particular to a road or airport embedded pipe arrangement structure and a method for controlling temperature and demolishing.

Background

In engineering construction, the service life of a road or an airport runway surface layer is generally 10-15 years, and the service life of the road or the airport runway surface is shortened under the action of temperature stress caused by freezing and thawing of ice and snow or high temperature and the load of vehicles and airplanes. Therefore, the embedded pipes are laid at the bottom of the road surface layer or on the upper part of the base layer to carry out water circulation temperature control on the road surface, so that the influence of temperature stress on the road surface is greatly reduced, and the temperature control system can timely remove snow and melt ice in ice and snow seasons, thereby relieving traffic pressure and reducing the harm of freeze thawing of the road surface.

When the road surface layer reaches the service life and needs to be dismantled or overhauled, a hydraulic breaking hammer is mostly used for dismantling the road surface layer, and the highway, the national road, the province, the countryside and the countryside can all face common problems in regions with complex climate: (1) in cold seasons, roads or base runways are repeatedly frozen and thawed, so that traffic is influenced, the service life of the roads is greatly influenced, and snow melting and deicing are frequently required; (2) in the global warming environment, the extreme high temperature weather also begins to become a normal state, the temperature stress of the road surface is increased due to the high temperature, the service life of the road is greatly influenced, and the road surface needs to be cooled at this time; (3) the surface layer is thicker in roads with large traffic volume, the surface layer is usually more than 25cm, ribs are arranged on the surface layer, the surface layer is broken and removed by adopting a traditional hydraulic hammer, the generated noise is large, the construction period is long, the life of surrounding residents is influenced, and compared with the method that the surface layer is removed by adopting the pre-buried pipe blasting, the method is more suitable.

In fact, snow and ice removal, high-temperature pavement cooling and scrapped road surface layer removal of roads are not considered in the early stage of road construction in the project. Therefore, the temperature control of the road and the blasting demolition of the road surface can be considered at the beginning of the design, and the temperature control pipeline pre-buried in the road construction can be used as a blasting blast hole for demolishing the road surface layer in the future.

Disclosure of Invention

The invention aims to overcome the defects and provides a road or airport embedded pipe arrangement structure and a method for temperature control and demolition, so as to achieve the purposes of road temperature control and blasting demolition with high efficiency, safety and low energy consumption.

In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a road or airport embedded pipe arrangement structure, a embedded pipe is laid at a distance of a section on the basic unit upper portion of road or airport runway, the length direction of embedded pipe perpendicular to road or airport runway is laid, the basic unit is stretched out at embedded pipe both ends, the one end and the water piping connection of embedded pipe, the other end and water piping connection, be equipped with the solenoid valve between embedded pipe and the inlet tube, the outer wall position that embedded pipe is close to drain pipe one end contacts with temperature sensor, when the future blasting is demolishd, the big gun hole is demolishd to the embedded pipe double-purpose, closed loop automatic control system is constituteed with PLC to temperature sensor and solenoid valve.

The invention also discloses another road or airport embedded pipe arrangement structure, wherein a piece of embedded pipe is laid at intervals at the bottom of a surface layer of a road or airport runway, the embedded pipe is laid perpendicular to the length direction of the road or airport runway, two ends of the embedded pipe extend out of the surface layer, one end of the embedded pipe is connected with a water inlet pipe, the other end of the embedded pipe is connected with a water outlet pipe, a solenoid valve is arranged between the embedded pipe and the water inlet pipe, the outer wall position of the embedded pipe close to one end of the water outlet pipe is contacted with a temperature sensor, when blasting is removed in the future, the embedded pipe is also used as a blast hole for removal, and the temperature sensor, the solenoid valve and a PLC form a closed-loop automatic control system.

Preferably, the inlet tube has the discrepancy in elevation with the drain pipe, and the inlet tube is higher than the drain pipe, and pre-buried pipe has 1 ~ 3 drainage slopes, and the diameter of inlet tube and drain pipe is greater than pre-buried pipe.

Preferably, the embedded pipe is made of a heat-conducting plastic pipe, and the lower half part of the embedded pipe is wrapped and reinforced by U-shaped cast iron.

Preferably, the water inlet pipe is wrapped with a thermal insulation material.

In addition, the invention also discloses a construction method of the road or airport embedded pipe arrangement structure, which comprises the following steps:

1) The base layer is rolled and leveled to reach the designed elevation;

2) A groove with the inclination of 1-3 degrees is formed on the surface of the base layer by a grooving machine and is used for placing the embedded pipe, and the embedded pipe is completely embedded into the base layer;

3) The electromagnetic valve is connected between the pre-buried pipe and the water inlet pipe;

4) The PLC, the EM231, the relay and the switching power supply form a case which is buried in a road shoulder or placed outside the road shoulder, the electromagnetic valve is connected with the relay, the temperature sensor is connected with the EM231 analog input module, a power line and a signal transmission line of the temperature sensor are arranged on the surface of the embedded pipe, 1 PLC is connected to each 8 temperature sensors of the embedded pipe and the signal transmission lines of the corresponding electromagnetic valves, and the power supply for supplying power to the case converts high-voltage alternating current into low-voltage direct current through the switching power supply to supply power to the electromagnetic valves and the temperature sensors; a computer interface is reserved on the PLC case, and the PLC case is checked and overhauled by a computer;

5) Embedding the embedded pipe into the groove, filling and compacting, and rolling and leveling the base layer again;

6) And continuously paving a pavement layer on the base layer.

The invention also discloses another construction method of the road or airport embedded pipe arrangement structure, which comprises the following steps:

1) The base layer is rolled and leveled to reach the designed elevation;

2) Fixing a pre-buried pipe on the surface of the base layer, wherein the pre-buried pipe has an inclination of 1-3 degrees;

4) The PLC, the EM231, the relay and the switching power supply form a case to be placed in or out of a road shoulder, the electromagnetic valve is connected with a port of the relay, the temperature sensor is connected with the EM231 analog input module, a power line and a signal transmission line of the temperature sensor are arranged on the surface of the embedded pipe, 1 PLC is connected to each 8 temperature sensors of the embedded pipe and the signal transmission line of the corresponding electromagnetic valve, and the power supply for supplying power to the case converts high-voltage alternating current into low-voltage direct current through the switching power supply to supply power to the electromagnetic valves and the temperature sensors; a computer interface is reserved on the PLC case, and the PLC case is checked and overhauled by a computer;

5) And pouring cement concrete on the road base layer with the fixed embedded pipe to carry out surface layer construction.

The invention discloses a method for controlling temperature by using a road or airport embedded pipe arrangement structure, which comprises the following steps:

1) The water inlet pipe is connected with hot water in winter, and the rated temperature set in the water inlet pipe is 35 ℃; cold water is introduced into the water inlet pipe in summer, the temperature range of the cold water of the water inlet pipe is 5-20 ℃, the rated temperature set in the PLC is 25 ℃, and hot water or cold water is discharged from the water discharge pipe after circulation;

2) The temperature sensor transmits the temperature of the outer wall of the pipeline at the joint of the embedded pipe and the drain pipe to the EM231, the EM231 converts an electric signal into a digital signal and transmits the digital signal to the PLC, the PLC compares the actual temperature of the port of one end, close to the drain pipe, of each of the 8 embedded pipes with the rated temperature, then sends an instruction to the relay to control the on-off of the electromagnetic valve, and the PLC sends an instruction to the relay once every 3-25 minutes; when hot water is required to be heated and accessed on the road surface or the airport runway in winter, if the actual temperature of one temperature sensor is higher than the rated temperature, the electromagnetic valve in the same embedded pipe is closed, and if the actual temperature of one temperature sensor is lower than the rated temperature, the electromagnetic valve is opened; when cold water is required to be fed in on a road surface or an airport runway in summer, if the actual temperature of the temperature sensor is higher than the rated temperature, the electromagnetic valve is opened, and if the actual temperature of the temperature sensor is lower than the rated temperature, the electromagnetic valve is closed.

In addition, the invention also discloses a method for dismantling by using the road or airport embedded pipe arrangement structure, which comprises the following steps:

1) The road shoulders on both sides of the road or the airport runway are damaged, the embedded pipe is found, the electromagnetic valve, the temperature sensor and the PLC are recovered, a cutting machine is used for cutting the embedded pipe to reserve a blast hole port, the blast hole is cleaned by high-pressure air,

2) A rope is threaded from one port of the blast hole to the other port;

3) Continuously or discontinuously binding explosives by using silk threads or adhesive tapes at the part outside the hole of the rope line, then inserting an electronic detonator into the explosive in the middle, dragging the other end of the rope line, dragging the explosives into the blast hole, leaving the primer foot line outside the hole, and plugging two ends of the blast hole by using plugging materials;

4) The detonator is connected with all detonator leg wires, determines the detonation sequence of each hole and detonates.

Preferably, the power supply is a street lamp shunt power supply or other power supplies, and the power line and the insulating layer of the signal transmission line are thickened by two or more layers.

The invention has the beneficial effects that:

1. when snow on a road or an airport runway is frozen, the embedded pipeline is subjected to hot water circulation, so that the purposes of removing snow and melting ice can be achieved, the passing condition of the road can be improved in snowy days or below zero, repeated freezing and thawing of the road can be effectively prevented, and the service life of the road can be well prolonged.

2. When the temperature of the road or the pavement of the airport runway is too high, the pre-buried pipeline carries out cold water circulation, so that the aim of cooling the pavement can be achieved, the temperature stress caused by high temperature is reduced in summer, the damage of the road due to thermal expansion is prevented, and the service life of the road can be well prolonged.

3. The arranged pre-buried pipes are used as blast holes needed when the road pavement is scrapped and removed, drilling steps are eliminated, meanwhile, drilling construction noise pollution is avoided, the construction period can be greatly shortened by adopting blasting removal, the road removal cost can be reduced, the use of manpower and material resources is reduced, and particularly, the effect on heavy-load pavements is more obvious.

4. The closed-loop automatic control system in the embedded pipe enables the road to be more controllable, stable and efficient when being heated or cooled, and reduces the use of manpower and material resources.

5. The invention introduces the design concept of the whole life into the engineering road construction, substantially changes the scrapping and dismantling mode of the road surface layer, simultaneously considers the temperature control of the road surface, greatly reduces the temperature stress caused by the temperature, effectively improves the service life of the road, has advanced innovation thought undoubtedly, brings the technical progress of the road construction, and adds the electrified automatic control technology when controlling the temperature of the road, so that the temperature control of the road is more stable and efficient.

6. According to the technical scheme for blasting demolition of the scraped road surface layer, the pipeline is pre-buried during road pavement construction, blasting operation can be carried out only by finding the pre-buried pipe during blasting demolition, the condition that the pavement is damaged by a drilling machine on the road is avoided, the construction period is greatly shortened, a large amount of manpower and material resources are saved, and noise pollution caused by drilling construction is avoided.

7. According to the technical scheme provided by the invention, the actual temperature of the embedded pipes is compared with the rated temperature through a programming algorithm to control the on and off of the electromagnetic valve, the temperature of each embedded pipe is ensured to be close, meanwhile, the blasting demolition when the road surface is scrapped is also considered, the embedded pipes are made of materials with high thermal conductivity, the lower half parts of the embedded pipes are wrapped and reinforced by U-shaped cast iron, the pipes can be used as water circulation temperature control pipes and explosive installation channels when demolition and blasting are carried out, blasting holes are easy to break, energy can be well transmitted to the road surface, a good crushing effect is obtained, the engineering blasting purpose of safety, high efficiency and low energy consumption is achieved, the two purposes are achieved, the engineering cost is greatly reduced, and the construction period is shortened.

8. The invention provides a scheme of pre-burying blast holes, and the blast holes are covered above the road surface by using the wire netting, so that the flying stone hazard is effectively reduced, and the blasting safety is facilitated.

9. According to the technical scheme for removing snow, melting ice and cooling the road surface, the PID controller of the set temperature control system is used for generating a PID algorithm of a closed-loop control process by means of PID instruction guide, the PID algorithm is put in a program, the conditions of removing snow, melting ice and cooling the road can be processed, one set of control system simultaneously meets the requirements of heating and cooling the road, the economic benefit is high, the control process is stable and reliable, and the real-time performance is high; the temperature of the tail end of the embedded pipe is monitored by a temperature sensor in real time, temperature data are transmitted to a PLC (programmable logic controller), a PID (proportion integration differentiation) algorithm of a closed-loop control process is generated by a PID controller of a set temperature control system by means of a PID instruction guide, the PID algorithm is put in a program, and the PLC outputs an instruction to a relay to control the opening and closing of an electromagnetic valve of a water inlet port by comparing the actual temperature of the embedded pipe with the rated temperature every 3-25 minutes so as to achieve the purpose of automatically controlling the temperature of the whole section of a road surface.

10. The invention avoids the drilling operation, considers the temperature control of the road surface, and reduces the damage of the road surface to the environment; can bring good economic and social benefits.

Drawings

Fig. 1 is a schematic cross-sectional view of one embodiment of a road or airport runway with embedded pipes disposed on top of the substrate.

Fig. 2 is a schematic cross-sectional view of an embodiment of a road or airport runway with a pre-buried pipe arranged on the upper part of a base layer as a pre-buried blast hole.

Fig. 3 is a schematic illustration of the loading of an embodiment of arranging a pre-buried pipe as a pre-buried blast hole on the upper part of a base layer of a road or an airport runway.

Fig. 4 isbase:Sub>A schematic cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.

Fig. 5 is a schematic cross-sectional view of the embedded pipe arranged on the upper part of the base layer in fig. 2 as an embedded blast hole.

Fig. 6 is a schematic cross-sectional view of one embodiment of a pavement or airport runway with buried pipes disposed at the bottom of the pavement.

Fig. 7 is a schematic cross-sectional view of fig. 6 at the location B-B.

Fig. 8 is a schematic view showing the connection between the water inlet pipe and the embedded pipe of one embodiment of the embedded pipe of the road or the airport runway.

Fig. 9 is a schematic cross-sectional structure diagram of a pre-buried pipe of one embodiment of the road or airport runway.

Fig. 10 is a schematic view of the working principle of one embodiment of the embedded pipe of the road or airport runway.

In the figure, 2 — facing; 3-shoulder of the road; 4-a base layer; 5-an underlayer; 6, pre-embedding a pipe or a blast hole; 7, an electromagnetic valve; 8, a water inlet pipe; 9-a drain pipe; 10-a temperature sensor; 11-PLC; 12-EM 231; 13-a relay; 14-a switching power supply; 15-a power supply; 16-electronic detonators; 17-detonator leg wire; 18-rope thread; 19-a plugging material; 20-an explosive; 21-U-shaped cast iron pipe.

Detailed Description

The invention is described in further detail below with reference to the figures and specific embodiments.

As shown in fig. 1, the cross-sectional view of an embodiment of a road or an airport runway with a pre-buried pipe arranged on the upper part of a base layer includes a base layer 5, a base layer 4, a surface layer 2, a road shoulder 3, a pre-buried pipe 6 with a drainage gradient of 1-3 degrees arranged on the upper part of the base layer 4 of the road or the airport runway, a U-shaped cast iron 21 wrapped on the lower half part of the pre-buried pipe 6, a water inlet pipe 8 and a water outlet pipe 9 longitudinally arranged, an electromagnetic valve 7 and a temperature sensor 10, the water inlet pipe 8 and the water outlet pipe 9 connected with the pre-buried pipe 6 and then embedded into the road shoulder 3.

As shown in fig. 2, the cross-sectional view of an embodiment of the method for arranging the pre-buried pipe as the pre-buried blast hole on the upper part of the base course of the road or airport runway comprises a base course 5, a base course 4, a surface course 2 and a road shoulder 3, a blast hole 6 with a drainage gradient of 1-3 degrees is arranged on the upper part of the base course 4 of the road or airport runway and a U-shaped cast iron 21 wrapped on the lower part of the pre-buried pipe 6, a rope line 18, an explosive 20, an electronic detonator 16 and a detonator leg line 17.

As shown in fig. 3, the schematic charging diagram is an embodiment of arranging a pre-buried pipe on the upper part of a base layer of a road or an airport runway as a pre-buried blast hole, and comprises a base layer 5, a base layer 4, a surface layer 2, a road shoulder 3, a blast hole 6 which is arranged on the upper part of the base layer 4 of the road or the airport runway and has an inclination of 1-3 degrees, an explosive 20, an electronic detonator 16, a detonator foot line 17, a hole extranet, a plugging material 19 and a rope line 18 for pulling the explosive 20.

As shown in fig. 4, which isbase:Sub>A schematic cross-sectional view of fig. 1 atbase:Sub>A-base:Sub>A position, the cross-sectional view includes three parallel pre-buried pipes 6 withbase:Sub>A drainage gradient of 1-3 degrees arranged on the surface ofbase:Sub>A road or airport runway substrate 4, U-shaped cast iron 21 wrapped on the lower half part of the pre-buried pipes 6,base:Sub>A water inlet pipe 8 andbase:Sub>A water outlet pipe 9 longitudinally arranged, an electromagnetic valve 7 andbase:Sub>A temperature sensor 10, and the water inlet pipe 8 and the water outlet pipe 9 connected with the pre-buried pipes 6 and then buried inbase:Sub>A road shoulder 3.

As shown in fig. 5, the cross-sectional view of the pre-buried barrel arranged on the upper part of the base layer in fig. 2 is taken as a pre-buried blast hole, and the pre-buried barrel comprises three parallel blast holes 6 with 1-3 degrees of drainage gradient arranged on the surface of the base layer 4 of the road or airport runway after the ground shoulder 3 is broken, and a U-shaped cast iron 21 wrapped on the lower part of the pre-buried barrel 6.

As shown in fig. 6, the schematic cross-sectional view of an embodiment of a road or airport runway with a pre-embedded pipe arranged at the bottom of a surface layer includes a sub-base 5, a base layer 4, a surface layer 2, a road shoulder 3, a pre-embedded pipe 6 with a drainage gradient of 1-3 degrees arranged on the surface of the base layer 4 of the road or airport runway and a U-shaped cast iron 21 wrapped on the lower half part of the pre-embedded pipe 6, a water inlet pipe 8 and a water outlet pipe 9 longitudinally arranged, an electromagnetic valve 7 and a temperature sensor 10, and the water inlet pipe 8 and the water outlet pipe 9 are connected with the pre-embedded pipe 6 and then embedded into the road shoulder 3.

As shown in fig. 7, which is a schematic cross-sectional view of fig. 6 at a position B-B, the cross-sectional view includes three parallel embedded pipes 6 with a drainage gradient of 1-3 degrees, which are arranged at the bottom of the pavement or airport runway surface layer 4, U-shaped cast iron 21 wrapped at the lower half part of the embedded pipes 6, a water inlet pipe 8 and a water outlet pipe 9 which are longitudinally arranged, an electromagnetic valve 7 and a temperature sensor 10, and the water inlet pipe 8 and the water outlet pipe 9 which are connected with the embedded pipes 6 and then embedded into the road shoulder 3.

As shown in fig. 8, it is a schematic diagram of connection between a water inlet pipe and an embedded pipe of an embodiment of a pre-embedded pipe of a road or an airport runway, and includes a water inlet pipe 8, an embedded pipe 9 and an electromagnetic valve 7, and the electromagnetic valve 7 is installed between the water inlet pipe 8 and the embedded pipe 6.

As shown in fig. 9, the cross-sectional structure of the embedded pipe of an embodiment of the embedded pipe of the road or the airport runway is schematically illustrated, and the embedded pipe comprises a guide embedded pipe 6 and a U-shaped cast iron 21 wrapped on the lower half part of the embedded pipe 6.

As shown in fig. 10, it is a schematic circuit diagram of an embodiment of a pre-buried pipe of a road or an airport runway, and includes a road surface or an airport runway 1, an electromagnetic valve 7 and a temperature sensor 10 are respectively disposed in the two shoulders 3 or outside the shoulders 3, the power supply voltage 220V (ac mains) and the ac power supply 220V of the PLC are connected to a switching power supply 14 and converted into a dc power supply of 24V to supply power to the electromagnetic valve 7 connected to a relay 13 and the temperature sensor 10 connected to an EM231 12, and the electromagnetic valve 7, the temperature sensor 10 and the EM231 are supplied power, and the signal line of the temperature sensor 10 is connected to the EM231 12 to convert the electrical signal into a digital signal and transmit the digital signal to the PLC 11.

The pre-buried pipe 6 can be made of a high-thermal-conductivity HDPE plastic pipe and also serves as a pre-buried blast hole for blasting demolition of the pavement or the airport runway 1.

The explosive 20 is selected from emulsion explosive and water gel explosive.

The rope 18 is hemp rope or high-molecular material rope or iron wire or steel wire rope.

The plugging material 19 is stemming or waste newspaper.

The power supply 15 is a street lamp power supply or other power supplies.

The temperature sensor 10 is selected from the model number PT100.

The EM231 analog input module is selected from a thermocouple module with the model number of 6ES7 231-7PF22-0XA0 and 8-channel input, and the rated voltage is DC 24V. Install EM231 analog input module between PLC and the temperature sensor in this embodiment, EM231 turns into digital signal transmission for PLC with temperature sensor's electrical signal to realize the real time monitoring of temperature.

Example 1

In northern China, shenyang city is taken as an example, shenyang city belongs to temperate continental climate, the average temperature is-18 ℃ to-6 ℃ in 1 month, the graded broken stone asphalt road has 200mm thick subbase layer, 200mm thick base layer, 160mm thick pavement layer and 15 m wide double lane total length of 5 kilometers. The embedded pipes are laid at intervals of 30cm and perpendicular to the length direction of a road surface, the embedded pipes have a drainage gradient of 1 degree and are laid on the upper portion of a roadbed layer, the outer diameter of each embedded pipe is 50mm, the inner diameter of each embedded pipe is 40mm, the thickness of each pipe wall is 5mm, and the length of each embedded pipe is 16 m. The electromagnetic valve is a two-position two-way FB2E-V-08 electromagnetic valve, the nominal drift diameter DN50 of the electromagnetic valve and the rated voltage DC 24V, the temperature sensor is PT100, the working temperature is-40 ℃ to +85 ℃, the power supply voltage is DC 24V, the EM231 is 6ES7 231-7PF22-0XA0, the EM231 is a thermocouple module with 8-channel input, and the rated voltage DC 24V.

The construction method of the road embedded pipe arrangement structure comprises the following steps:

(1) after the construction of the road base layer is completed, embedding the embedded pipes on the surface of the road base layer, reserving pipe grooves for embedding the embedded pipes by means of a grooving machine and the like, wherein the pipe grooves have an inclination of 1 degree with the horizontal plane, and the interval between each pipe groove is 30cm;

(2) the road bed is stretched out at pre-buried pipe both ends, and the inlet tube is connected to one end, and one end joint drain pipe to installation solenoid valve between inlet tube and pre-buried pipe, PLC connects the relay, and a solenoid valve corresponds a temperature sensor, and the binder is fixed on pre-buried pipe and drain pipe link surface for the temperature sensor, and temperature sensor is connected with EM231 analog input module, and EM231 converts the digital signal transmission into with the signal of telecommunication for PLC. Every 8 pipelines are arranged at intervals of 30cm and controlled by 1 PLC, 3333 sensors and 416 PLCs are needed for 1 kilometer, the power supply of the PLCs is 220V (alternating current commercial power), a switching power supply converts 220V alternating current into 24V direct current power supply to supply power to an electromagnetic valve connected with a relay and a temperature sensor connected with the EM231, the PLC, the EM231, the relay and the switching power supply form a case which is buried in a road shoulder or placed outside the road shoulder, and 416 cases are needed for each kilometer.

The method for controlling the temperature by utilizing the road embedded pipe arrangement structure comprises the following steps:

(1) the water inlet pipe is connected with hot water when the pavement needs to be heated, the temperature range of the hot water is 50-90 ℃, and the rated temperature set in the PLC is 35 ℃;

(2) the PT100 temperature sensor monitors the temperature at the tail end of the embedded pipe in real time, and sends an electric signal to an EM231 analog input module, the EM231 sends a converted digital signal to a PLC, a PID (proportion integration differentiation) controller of a set temperature control system generates a PID algorithm of a closed-loop control process by means of a PID instruction guide, the PID algorithm is placed in a program, the PLC sends an instruction to an electromagnetic valve through a relay every 5 minutes to control the opening and closing of the electromagnetic valve, when a road surface needs to be heated, a water inlet pipe is connected with hot water (50-90 ℃), when the temperature of the embedded pipe is higher than 35 ℃, the PLC controls the electromagnetic valve to be closed through the relay, and when the temperature of the embedded pipe is lower than 35 ℃, the PLC controls the electromagnetic valve to be opened through the relay;

(3) and after the pre-buried pipes are laid, the water inlet pipe is wrapped by a heat-insulating material, and then the pavement construction is carried out.

The method for dismantling by utilizing the road embedded pipe arrangement structure comprises the following steps:

(1) cutting the two ends of the pre-buried pipe by using a cutting machine, removing a road shoulder by using a crusher, recovering the electromagnetic valve, the temperature sensor and the case, finding openings at the two ends of the pre-buried blast hole, and cleaning the pipeline by using compressed air;

(2) a rope is inserted from an opening at one end of the pre-buried blast hole to the other opening; then binding discontinuous water gel cartridges by silk threads at the outer part of the hole of the rope line, uniformly distributing the pre-buried blast holes with explosives, inserting electronic detonators into the cartridges at the middle part, wherein the interval between the cartridges is 15cm, and the diameter of the cartridges is 25mm; dragging the other end of the rope, dragging the explosive package into the pre-buried blast hole, and plugging two ends of the pre-buried blast hole by using a plugging material;

(3) the detonator is connected with all detonator leg wires, and the delay time is set;

(4) and (4) clearing the blasting site, and initiating detonation after the clearing is finished.

Example 2

Taking Chongqing area as an example, the average temperature of 8 months is 25-34 ℃. Under the influence of high pressure of continents and high pressure of subtropics, the daily maximum air temperature of most regions gradually rises to 35-39 ℃ and locally reaches 40-42 ℃, a certain road is a cement concrete road, and the road construction parameters are as follows: the subbase layer is made of plain soil with the thickness of 200mm, the base layer is made of graded broken stone with the thickness of 200mm, the surface layer is made of C30 cement concrete with the thickness of 180mm, and the road width is 15 meters, and the total length of the double lanes is 5 kilometers. The embedded pipes are laid at intervals of 30cm and perpendicular to the length direction of a road surface, the embedded pipes have a drainage slope of 2 degrees and are laid on the upper portion of a roadbed layer, the outer diameter of each embedded pipe is 50mm, the inner diameter of each embedded pipe is 40mm, the thickness of each pipe wall is 5mm, and the length of each embedded pipe is 16 m. The electromagnetic valve is a two-position two-way FB2E-V-08 electromagnetic valve, the nominal drift diameter DN50 of the electromagnetic valve and the rated voltage DC 24V, the temperature sensor is PT100, the working temperature is-40 ℃ to +85 ℃, the power supply voltage is DC 24V, the EM231 is 6ES7 231-7PF22-0XA0, the EM231 is a thermocouple module with 8-channel input, and the rated voltage DC 24V.

(1) after the construction of the road base layer reaches the designed elevation, fixing the embedded pipes on the surface of the base layer, wherein the embedded pipes have an inclination of 2 degrees as a drainage gradient, and the interval of each pipe groove is 30cm;

(2) the road bed is stretched out at pre-buried pipe both ends, and the inlet tube is connected to one end, and one end joint drain pipe to installation solenoid valve between inlet tube and pre-buried pipe, PLC connects the relay, and a solenoid valve corresponds a temperature sensor, and the binder is fixed on pre-buried pipe end surface for the temperature sensor, and temperature sensor is connected with EM231 analog input module, and EM231 converts the digital signal transmission into with the signal of telecommunication for PLC. Every 30cm arranges a pipeline, every 8 pipelines are controlled by 1 PLC, 3333 sensors and 416 PLCs are needed for 1 kilometer, the power supply of the PLC is 220V (alternating current commercial power), a switching power supply converts 220V alternating current into 24V direct current power supply to supply power to an electromagnetic valve connected with a relay and a temperature sensor connected with an EM213, the PLC, the EM231, the relay and the switching power supply form a case to be buried in a road shoulder or placed outside the road shoulder, and 416 cases are needed for each kilometer.

(1) the water inlet pipe is connected with hot water when the road surface needs to be heated, and connected with cold water when the road surface needs to be cooled, when the hot water is connected, the temperature range of the hot water is 50-90 ℃, the rated temperature of the embedded pipe at the port part of the embedded pipe arranged in the PLC, which is close to one end of the water discharge pipe, is 35 ℃, and when the cold water is connected, the temperature range of the cold water is 5-20 ℃, and the rated temperature arranged in the PLC is 25 ℃;

(2) the PT100 temperature sensor monitors the temperature of the connecting end of the embedded pipe and the drain pipe in real time, sends an electric signal to an EM231 analog input module, the EM231 sends a converted digital signal to a PLC, and generates a PID algorithm of a closed-loop control process by a PID instruction guide of a set temperature control system, the PID algorithm is placed in a program, the PLC sends an instruction to an electromagnetic valve through a relay every 10 minutes to control the opening and closing of the electromagnetic valve, when the road surface needs to be heated, a water inlet pipe is connected with hot water (50-90 ℃), when the temperature of the embedded pipe is higher than the rated temperature by 35 ℃, the PLC controls the electromagnetic valve to be closed through the relay, and when the temperature of the embedded pipe is lower than the rated temperature by 35 ℃, the PLC controls the electromagnetic valve to be opened through the relay; when the pavement needs to be cooled, the water inlet pipe is connected with cold water (5-20 ℃), the PLC controls the opening and closing of the electromagnetic valve through the relay, when the temperature of the embedded pipe is lower than the rated temperature by 25 ℃, the PLC controls the closing of the electromagnetic valve through the relay, and when the temperature of the embedded pipe is higher than the rated temperature by 25 ℃, the PLC controls the opening of the electromagnetic valve through the relay;

(3) after the assembly of the embedded pipe and the circuit installation of the closed-loop control system are finished, the water inlet pipe is wrapped by a heat insulation material, and then the cement concrete of the surface layer is poured.

(4) and (4) clearing the blasting site, and starting blasting after the clearing is finished.

Example 3

In the north of China, taking the Changchun city as an example, the Changchun city belongs to temperate zone continental climate, the average temperature is-20 ℃ to-10 ℃ in 1 month, the flying area (grade 4F) is taken as a standard according to the regulations of MH 5004-2009 design Specification for cement concrete pavement of civil airport and MH5006-2002 technical Specification for construction of cement concrete pavement surface layer of civil airport flying area, the structure layers of a certain airport road comprise a soil foundation, a cushion layer, a base layer and a surface layer, the soil foundation is 300mm thick, the cushion layer is 180mm thick medium sand, the base layer is 300mm thick cement concrete, the surface layer is 200mm thick cement concrete, the width of a runway is 45m, the shoulder is 60m together with the width of the runway and the total length is 3200m, the embedded pipes are transversely paved perpendicular to the length of the runway, and the interval of each pipe is 30cm. The embedded pipe has a drainage slope of 3 degrees, is laid on the upper part of the roadbed layer, and has an outer diameter of 50mm, an inner diameter of 40mm, a pipe wall thickness of 5mm and a length of 46 m. The electromagnetic valve is a two-position two-way FB2E-V-08 electromagnetic valve, the nominal path DN50 of the electromagnetic valve and the rated voltage DC 24V, the temperature sensor is PT100, the working temperature is-55-125 ℃, the power supply voltage is DC 24V, the EM231 is 6ES7-7 PF22-0XA0, the electromagnetic valve is an 8-channel input thermocouple module, and the rated voltage DC 24V is adopted.

The construction method of the arrangement structure of the embedded pipes in the airport comprises the following steps:

(1) after the construction of the runway foundation layer reaches the designed elevation, fixing the embedded pipes on the surface of the foundation layer, wherein the embedded pipes have 3-degree inclination as the drainage gradient, and the interval between every two embedded pipes is 30cm;

(2) the road surface layer is stretched out at pre-buried pipe both ends, and the inlet tube is connected to one end, and one end joint drain pipe to installation solenoid valve between inlet tube and pre-buried pipe, PLC connects the relay, and a solenoid valve corresponds a temperature sensor, and the binder is fixed on pre-buried pipe end surface for the temperature sensor, and temperature sensor is connected with EM231 analog input module, and EM231 converts the digital signal transmission into with the signal of telecommunication for PLC. Every 30cm arranges a pipeline, every 8 pipelines are controlled by 1 PLC, 3333 sensors and 416 PLCs are needed for 1 kilometer, the power supply of the PLC is 220V (alternating current commercial power), a switching power supply converts 220V alternating current into 24V direct current power supply to supply power to an electromagnetic valve connected with a relay and a temperature sensor connected with the EM231, the PLC, the EM231, the relay and the switching power supply form a case which is buried in a road shoulder or placed outside the road shoulder, and 416 cases are needed for each kilometer.

The method for controlling the temperature by using the arrangement structure of the airport embedded pipes comprises the following steps:

(2) the PT100 temperature sensor monitors the temperature of the tail end of the embedded pipe in real time, sends an electric signal to an EM231 analog input module, the EM231 sends a converted digital signal to a PLC, a PID (proportion integration differentiation) algorithm of a closed-loop control process is generated by a PID controller of a set temperature control system by means of a PID instruction guide, the PID controller is placed in a program, the PLC sends an instruction to an electromagnetic valve through a relay every 3 minutes to control the opening and closing of the electromagnetic valve, when the road surface needs to be heated, a water inlet pipe is connected with hot water (50-90 ℃), when the temperature of the embedded pipe is higher than the rated temperature of 35 ℃, the PLC controls the electromagnetic valve to be closed through the relay, and when the temperature of the embedded pipe is lower than the rated temperature of 35 ℃, the PLC controls the electromagnetic valve to be opened through the relay;

(3) after the assembly of the embedded pipe and the circuit installation of the closed-loop control system are finished, the water inlet pipe is wrapped by a heat-insulating material, and then the cement concrete of the surface layer is poured.

The method for dismantling by utilizing the arrangement structure of the embedded pipes of the airport comprises the following steps:

Example 4

Taking the city in the middle city of China as an example, the city is in a temperate zone monsoon climate, the average temperature in 1 month is-4 to-5 ℃, the average temperature in 8 months is 24 to 32 ℃, a certain continuous reinforced concrete road is provided with a soil base with the thickness of 300mm, a cushion layer is medium sand with the thickness of 180mm, a base layer is cement concrete with the thickness of 300mm, a surface layer is cement concrete with the thickness of 300mm, the surface layer adopts double-layer reinforcing bars, a layer of reinforcing mesh is arranged 7cm away from the surface of the surface layer, a layer of reinforcing mesh is arranged 4cm away from the bottom of the surface layer, embedded pipes are transversely laid perpendicular to the length of a runway, and the interval of each pipeline is 30cm. The embedded pipe has a drainage gradient of 3 degrees, is laid on the surface of the roadbed layer, and has an outer diameter of 50mm, an inner diameter of 40mm, a pipe wall thickness of 5mm and a length of 16 m. The electromagnetic valve model is a two-position two-way FB2E-V-08 electromagnetic valve, the nominal drift diameter DN50 of the electromagnetic valve and the rated voltage DC 24V, the temperature sensor model is PT100, the working temperature is-40 ℃ to +85 ℃, the power supply voltage is DC 24V, the model of EM231 is 6ES7 231-7PF22-0XA0, the electromagnetic valve model is an 8-channel input thermocouple module, and the rated voltage DC 24V.

(1) the water inlet pipe is connected with hot water when the road surface needs to be heated, and is connected with cold water when the road surface needs to be cooled, the temperature range of the hot water is 50-90 ℃, and the rated temperature set in the PLC is 35 ℃ when the hot water is connected; when cold water is accessed, the temperature range of the cold water is between 5 and 20 ℃, and the rated temperature set in the PLC is 25 ℃;

(2) the PT100 temperature sensor monitors the temperature of the connecting end of the embedded pipe and the drain pipe in real time, sends an electric signal to an EM231 analog input module, the EM231 sends a converted digital signal to a PLC, and generates a PID algorithm of a closed-loop control process by a PID instruction guide of a set temperature control system, the PID algorithm is placed in a program, the PLC sends an instruction to an electromagnetic valve through a relay every 20 minutes to control the opening and closing of the electromagnetic valve, when the road surface needs to be heated, a water inlet pipe is connected with hot water (50-90 ℃), when the temperature of the embedded pipe is higher than the rated temperature by 35 ℃, the PLC controls the electromagnetic valve to be closed through the relay, and when the temperature of the embedded pipe is lower than the rated temperature by 35 ℃, the PLC controls the electromagnetic valve to be opened through the relay; when the pavement needs to be cooled, the water inlet pipe is connected with cold water (5-20 ℃), the PLC controls the opening and closing of the electromagnetic valve through the relay, when the temperature of the embedded pipe is lower than the rated temperature by 25 ℃, the PLC controls the closing of the electromagnetic valve through the relay, and when the temperature of the embedded pipe is higher than the rated temperature by 25 ℃, the PLC controls the opening of the electromagnetic valve through the relay;

(2) a rope is inserted from an opening at one end of the pre-buried blast hole to the other opening; then binding discontinuous water gel explosive cartridges by silk threads at the out-hole parts of the rope threads, uniformly distributing the pre-embedded blast holes with explosives, inserting electronic detonators into the explosive cartridges at the middle part, wherein the interval between the explosive cartridges is 15cm, and the diameter of the explosive cartridges is 25mm; dragging the other end of the rope line, dragging the explosive package into the pre-buried blast hole, and blocking the pre-buried blast hole;

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of this invention.

Claims

1. A pre-buried pipe arrangement for a road or airport, characterized by: lay a pre-buried pipe (6) at road or airport runway's basic unit (4) upper portion at a certain distance of interval, pre-buried pipe (6) perpendicular to road or airport runway's length direction is laid, pre-buried pipe (6) both ends are stretched out basic unit (4), the one end and the inlet tube (8) of pre-buried pipe (6) are connected, the other end is connected with drain pipe (9), be equipped with solenoid valve (7) between pre-buried pipe (6) and inlet tube (8), pre-buried pipe (6) are close to the outer wall position and the contact of temperature sensor (10) of drain pipe (9) one end, when demolising in the future, the big gun hole is demolishd in pre-buried pipe (6) double as, closed loop automatic control system is constituteed with PLC (11) in temperature sensor (10) and solenoid valve (7).

2. A pre-buried pipe arrangement for a road or airport, characterized by: lay a pre-buried pipe (6) at surface course (2) bottom at road or airport runway every a section distance, pre-buried pipe (6) perpendicular to road or airport runway's length direction is laid, surface course (2) are stretched out at pre-buried pipe (6) both ends, the one end and inlet tube (8) of pre-buried pipe (6) are connected, the other end is connected with drain pipe (9), there are solenoid valve (7) between pre-buried pipe (6) and inlet tube (8), outer wall position and the contact of temperature sensor (10) that pre-buried pipe (6) are close to drain pipe (9) one end, when demolising in the future, the big gun hole is demolishd in pre-buried pipe (6) double as, closed loop automatic control system is constituteed with PLC (11) in temperature sensor (10) and solenoid valve (7).

3. A road or airport embedded pipe arrangement as claimed in claim 1 or 2 wherein: the height difference exists between the water inlet pipe (8) and the water discharge pipe (9), the water inlet pipe (8) is higher than the water discharge pipe (9), the embedded pipe (6) has a water discharge gradient of 1-3 degrees, and the diameters of the water inlet pipe (8) and the water discharge pipe (9) are larger than that of the embedded pipe (6).

4. A road or airport embedded pipe arrangement as claimed in claim 1 or 2 wherein: the embedded pipe (6) is made of a heat-conducting plastic pipe, and the lower half part of the embedded pipe is wrapped and reinforced by U-shaped cast iron (21).

5. A road or airport embedded pipe arrangement as claimed in claim 1 or 2 wherein: the water inlet pipe (8) is wrapped with a heat insulation material.

6. A construction method of the pre-buried pipe arrangement structure of the road or airport according to claim 1, 3 or 4, characterized in that: the method comprises the following steps:

1) The base layer (4) is rolled and leveled to reach a designed elevation;

2) A groove with 1-3 degrees of inclination is formed on the surface of the base layer (4) by a grooving machine for placing the embedded pipe (6), and the embedded pipe (6) is completely embedded into the base layer (4);

3) The electromagnetic valve (7) is connected between the pre-buried pipe (6) and the water inlet pipe (8);

4) The intelligent control system comprises a PLC (11), an EM231 (12), a relay (13) and a switching power supply (14), wherein a case is formed by the PLC (11), the EM231 (12), the relay (13) and the switching power supply (14) and is buried in a road shoulder (3) or placed outside the road shoulder (3), an electromagnetic valve (7) is connected with the relay (13), a temperature sensor (10) is connected with an analog quantity input module of the EM231 (12), a power line and a signal transmission line of the temperature sensor (10) are arranged on the surface of an embedded pipe (6), the temperature sensor (10) of each 8 embedded pipes (6) and the signal transmission line of the corresponding electromagnetic valve (7) are connected into 1 PLC (11), and a power supply (15) for supplying power to the case converts high-voltage alternating current into low-voltage direct current through the switching power supply (14) to supply power to the electromagnetic valve (7) and the temperature sensor (10); a computer interface is reserved on a case of the PLC (11), and the case is checked and overhauled by a computer;

5) Burying the pre-buried pipe (6) into the groove, filling and compacting, and rolling and leveling the base layer (4) again;

6) And continuously paving the pavement layer (2) on the base layer (4).

7. A construction method of the pre-buried pipe arrangement structure of the road or airport according to claim 2, 3 or 4, characterized in that: the method comprises the following steps:

1) The base layer (4) is rolled and leveled to reach a designed elevation;

2) Fixing a pre-buried pipe (6) on the surface of the base layer (4), wherein the pre-buried pipe (6) has an inclination of 1-3 degrees;

4) The intelligent control system comprises a PLC (11), an EM (electromagnetic valve) (13), a relay (13) and a switching power supply (14), wherein a case is formed by the PLC (11), the EM (electromagnetic valve) (7) is connected with a port of the relay (13), a temperature sensor (10) is connected with an analog input module of the EM (electromagnetic valve) (12), a power line and a signal transmission line of the temperature sensor (10) are arranged on the surface of an embedded pipe (6), the temperature sensors (10) of every 8 embedded pipes (6) and the signal transmission lines corresponding to the electromagnetic valves (7) are connected into 1 PLC (11), and a power supply (15) for supplying power to the case converts high-voltage alternating current into low-voltage direct current through the switching power supply (14) to supply power to the electromagnetic valves (7) and the temperature sensors (10); a computer interface is reserved on a case of the PLC (11), and the case is checked and overhauled by a computer;

5) And pouring cement concrete on the road base layer (4) with the fixed embedded pipe (6) to construct the surface layer (2).

8. Method for temperature control using a road or airport embedded pipe arrangement according to claim 1 or 2, characterized in that: the method comprises the following steps:

1) The water inlet pipe (8) is connected with hot water in winter, the hot water temperature range of the water inlet pipe (8) is 50-90 ℃, and the rated temperature set in the PLC (11) is 35 ℃; cold water is introduced into the water inlet pipe (8) in summer, the temperature range of the cold water of the water inlet pipe (8) is 5-20 ℃, the rated temperature set in the PLC (11) is 25 ℃, and hot water or cold water is discharged from the water discharge pipe (9) after circulation;

2) The temperature sensor (10) transmits the temperature of the outer wall of a pipeline at the joint of the embedded pipe (6) and the drain pipe (9) to the EM231 (12), the EM231 (12) converts an electric signal into a digital signal and transmits the digital signal to the PLC (11), the PLC (11) compares the actual temperature of the port of one end, close to one end of the drain pipe (9), of the 8 embedded pipes (6) with the rated temperature, then sends an instruction to the relay (13) to control the on-off of the electromagnetic valve (7), and the PLC (11) sends an instruction to the relay (13) every 3-25 minutes; when hot water is required to be heated and accessed on the road surface or the airport runway in winter, if the actual temperature of one temperature sensor (10) is higher than the rated temperature, the electromagnetic valve (7) in the same embedded pipe (6) is closed, and if the actual temperature is lower than the rated temperature, the electromagnetic valve (7) is opened; when cold water is required to be fed in on the road surface or the airport runway in summer, if the actual temperature of the temperature sensor (10) is higher than the rated temperature, the electromagnetic valve (7) is opened, and if the actual temperature is lower than the rated temperature, the electromagnetic valve (7) is closed.

9. Method for demolition with a pre-buried pipe arrangement for roads or airports as claimed in claim 1 or 2, characterised in that: the method comprises the following steps:

1) The method comprises the steps of destroying road shoulders (3) on two sides of a road or an airport runway, finding a pre-buried pipe (6), recovering an electromagnetic valve (7), a temperature sensor (10) and a PLC (11), cutting the pre-buried pipe (6) by a cutting machine to reserve a port of a blast hole (6), cleaning the blast hole (6) by high-pressure air,

2) A rope is threaded from one port of the blast hole (6) to the other port;

3) Continuously or discontinuously binding explosives (20) by silk threads or adhesive tapes at the hole outer part of the rope (18), then inserting an electronic detonator (16) into the explosive (20) in the middle, dragging the other end of the rope (18), dragging the explosive (20) into the blast hole (6), leaving a detonator foot line (17) outside the hole, and plugging two ends of the blast hole (6) by plugging materials (19);

4) The detonator is connected with all detonator leg wires (17), determines the detonation sequence of each hole and detonates.

10. The construction method of the pre-buried pipe arrangement structure for roads or airports according to claim 6, wherein: the power supply (15) is a street lamp shunt power supply or other power supplies, and the power line and the insulating layer of the signal transmission line are thickened by two or more layers.