CN111270566A - Railway roadbed drainage device, repair structure and slurry-turning mud-pumping remediation method - Google Patents
Railway roadbed drainage device, repair structure and slurry-turning mud-pumping remediation method Download PDFInfo
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- CN111270566A CN111270566A CN202010213153.XA CN202010213153A CN111270566A CN 111270566 A CN111270566 A CN 111270566A CN 202010213153 A CN202010213153 A CN 202010213153A CN 111270566 A CN111270566 A CN 111270566A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/008—Drainage of track
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/02—Investigation of foundation soil in situ before construction work
- E02D1/027—Investigation of foundation soil in situ before construction work by investigating properties relating to fluids in the soil, e.g. pore-water pressure, permeability
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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Abstract
The invention discloses a drainage device for a railway roadbed, a repair structure and a grout-turning and mud-pumping remediation method. The roadbed comprises a track supporting layer and a roadbed surface layer below the track supporting layer, a track is arranged above the track supporting layer, the device comprises an anode pipe, and the anode pipe is obliquely placed downwards from one side of the track; the cathode tube is obliquely arranged upwards from the other side of the rail; the electrode tube is positioned between the anode tube and the cathode tube and is also used as a cathode of the anode tube and an anode of the cathode tube; the anode tube, the electrode tube and the cathode tube form an electrode group, and the electrode group is distributed at intervals along the track; the anode tube and the electrode tube form a first electrode pair, the electrode tube and the cathode tube form a second electrode pair, and the relay and the power supply enable the first electrode pair and the second electrode pair to be alternately electrified. The anode tube, the electrode tube and the cathode tube have certain inclination, and can accelerate the water drainage. The first electrode pair and the second electrode pair are alternately electrified, so that soil moisture migration and drainage can be more uniform.
Description
Technical Field
The invention relates to the technical field of drainage and remediation of railway subgrades, in particular to a drainage device of a railway subgrade, a restoration structure and a method for remedying mud pumping caused by slurry turning.
Background
Because the railway subgrade is easily affected by rainfall and underground water, once surface water or underground water permeates into specific foundation soil, the pore water pressure is continuously changed under the action of load, the phenomena of integral softening such as slurry turning, mud pumping, ballast sinking and the like can be generated, and the running stability and safety of a train are seriously affected. The subgrade slurry pumping is the result of the comprehensive action of various factors, and soil quality, water, temperature, road surface and traffic load are main factors influencing the subgrade slurry pumping, and also include the reasons in the aspect of engineering measures.
Although the technology of subgrade slurry-turning and mud-pumping renovation is widely researched at home and abroad, a plurality of traditional technologies are formed, such as a grouting method, organic materials are injected into a void area between a base plate and the surface layer of a subgrade bed through a grouting machine, so that the organic materials are filled between the base plate and the surface layer of the subgrade bed, soil is compacted, and the integrity of the subgrade is improved. However, the organic material is easy to age, and in the southeast areas with much rain, the service life of the grouting material is influenced by the re-infiltration of the rain, so that the curing effect is weakened. The second method is a drainage method, which is suitable for foundation bed diseases caused by poor drainage, and reduces the erosion of the surface water and the underground water to the foundation bed by dredging or building drainage facilities such as drainage ditches and the like to drain the underground water or reduce the underground water level. However, the method is complex in design and large in construction amount, requires a closed line during construction, has a large influence on travelling, and can drain away slurry while draining water under ordinary conditions, so that the loss of roadbed soil particles is caused.
Some of the traditional treatment techniques have good effects, and some of the traditional treatment techniques are unsatisfactory. The biggest inadequacy lies in that most of the required lines are closed during construction operation, so that the normal operation and safety of the lines are seriously affected, and meanwhile, railway skylight points are shorter and shorter due to operation requirements, and the traditional renovation technology cannot be completed in a short time, and the construction time is too short, so that the renovation quality is affected.
Disclosure of Invention
The first technical problem to be solved by the invention is to improve the renovation effect and not to influence the railway operation.
In order to achieve the above object, the present invention provides a railroad bed drainage apparatus, a repair structure, and a method for renovating slurry bleeding.
The adopted technical scheme is as follows:
a drainage device for a railway roadbed, the roadbed comprising a track supporting layer and a bed surface layer below the track supporting layer, a track being arranged above the track supporting layer, the device comprising
The anode tube is obliquely placed downwards from one side of the rail, the output end of the anode tube is positioned in the surface layer of the foundation bed, and the output end of the anode tube faces the axis of the rail;
the cathode tube is obliquely and upwards arranged from the other side of the track, the output end of the cathode tube is positioned in the surface layer of the foundation bed, the output end of the cathode tube faces the axis of the track, and the cathode tube is connected with the drain pipe;
the electrode tube is positioned between the anode tube and the cathode tube and is also used as a cathode of the anode tube and an anode of the cathode tube, the output end of the electrode tube is positioned in the surface layer of the foundation bed, and the output end of the electrode tube faces the cathode tube;
a relay and a power supply;
the anode tube, the electrode tube and the cathode tube form an electrode group, and the electrode group is distributed at intervals along the track;
in each electrode group, the anode tube and the electrode tube form a first electrode pair, the electrode tube and the cathode tube form a second electrode pair, and the relay and the power supply alternately electrify the first electrode pair and the second electrode pair.
First, the anode tube, the electrode tube and the cathode tube have a certain inclination, which accelerates the water discharge. Secondly, by enabling the first electrode pair and the second electrode pair to be electrified alternately, soil moisture migration and drainage can be more uniform. Moreover, by arranging the first electrode pair and the second electrode pair, the electrode distance can be shortened, drainage is accelerated, and cost and processing time are reduced. The drainage principle is as follows: when the first electrode pair or the second electrode pair is electrified with direct current, the pore water with positive charges is concentrated towards the direction of the cathode tube and is finally discharged from the drain pipe.
Furthermore, the included angle between the anode tube and the horizontal plane is 10-20 degrees; the drainage gradient of the cathode tube is 2% -4%; the included angle between the electrode tube and the horizontal plane is 40-50 degrees; the distance between adjacent electrode groups is 0.4-0.8 m; the output ends of the anode tube, the electrode tube and the cathode tube are positioned at the depth of 35-45 cm in the surface layer of the foundation bed. Thereby, an optimal comprehensive drainage effect can be obtained.
Furthermore, at least the tube body of the anode tube facing the cathode tube in the anode tube and the electrode tube is provided with a through hole; therefore, the cementing materials introduced from the through holes can be distributed more uniformly in the surface layer of the foundation bed. The tube body of the cathode tube is provided with through holes distributed annularly; thereby, the discharge of moisture is facilitated. A filter layer is arranged outside the cathode tube; this prevents the cathode tube from being clogged to affect the drainage.
A railroad bed rehabilitation structure comprising
The first grouting hole is formed after the anode tube is pulled out;
a drain channel composed of the cathode tube and the drain pipe;
the second grouting hole is formed after the electrode tube is pulled out;
the cementing layer is formed by cementing second slurry injected through at least an anode tube of the anode tube and the electrode tube with a foundation bed surface soil body;
and the first grouting holes and the second grouting holes are filled with first slurry.
Therefore, the railway roadbed repairing structure utilizes the anode pipe and the electrode pipe of the railway roadbed drainage device to inject the second slurry to cement the soil body on the surface layer of the foundation surface, so that the reinforcing effect under the steel rail, namely a main stress area, is better; the first grout is injected into the first grout injection hole and the second grout injection hole, so that rainwater can be prevented from infiltrating.
The track supporting layer is characterized by further comprising a grouting pipe, a sealing layer positioned between the track supporting layer and the surface layer of the foundation bed and formed by curing first slurry injected through the grouting pipe, and the first slurry filled in the grouting pipe. Therefore, the sealing layer can prevent rainwater from permeating into the surface layer of the foundation bed and prevent muddy water in the surface layer of the foundation bed from turning upwards to form mud pumping diseases.
The method for renovating the slurry bleeding of the railway subgrade comprises the following steps:
(1) the railway roadbed drainage device is arranged at a railway roadbed grout-pouring mud-pumping disease point;
(2) alternately electrifying the first electrode pair and the second electrode pair until the drainage rate of the drainage pipe and/or the water content of the surface layer of the foundation bed reach a preset value; injecting second slurry capable of being cemented with the soil body on the surface layer of the foundation bed to form a cementing layer through the anode tube;
(3) and after the anode tube and the electrode tube are pulled out, a first grouting hole and a second grouting hole are formed respectively, and then the first grouting hole and the second grouting hole are filled with first slurry.
Therefore, the railway roadbed slurry dumping and mud pumping remediation method does not need to close a line when electrified, drained and reinforced, a train can normally run, construction quality can be guaranteed in a short skylight time, and the phenomena that influence of closed construction on train operation and poor construction quality caused by short skylight time are avoided.
Further, in the step (2), intermittent electrification is adopted, and the intermittent electrification is preferably carried out for 5-15 minutes after 2-4 hours of electrification; therefore, the heating consumption of the soil body by electric energy can be reduced. And/or in the step (2), the ratio of the time length of the alternating energization of the first electrode pair and the second electrode pair is 1: (1.5-2.5); the second electrode pair needs to discharge the moisture migrated from the first electrode pair, and therefore setting a longer energization period can accelerate the drainage.
The second slurry comprises a first cementing material injected within 6-8 days of electrification and a second cementing material injected after 8-10 days of electrification, and the first cementing material and the second cementing material are used for cementing a soil body on the surface layer of the foundation bed through a chemical reaction; preferably, the first cementing agent is a calcium chloride solution and the second cementing agent is a sodium silicate solution. The soil body with the weak structure on the surface layer of the foundation bed is consolidated and chemically cemented through chemical reaction, so that the bearing performance of the soil body on the surface layer of the foundation bed can be obviously improved, and the possibility of mud pumping disease during slurry turning is reduced.
Further, the anode tube and the electrode tube are installed in a drilling mode; and mounting the cathode tube by adopting a ditching and backfilling mode. Therefore, the drainage device is convenient to install quickly.
The second technical problem to be solved by the invention is to make the railway roadbed drainage device, the repair structure and the grout-dumping and mud-pumping treatment method more convenient to apply, save manpower and further improve the treatment effect because the drainage time usually needs at least about 10 days, and most of the time except grouting does not need to be watched by personnel.
In order to achieve the above object, the present invention provides a railroad bed drainage and monitoring apparatus. The adopted technical scheme is as follows:
the railway roadbed drainage and monitoring equipment, the roadbed includes track supporting layer and the bed top layer of track supporting layer below, and track supporting layer top is the track, and the device includes
A drainage device, which is an electroosmotic drainage device;
the detection device comprises a soil moisture content sensor arranged in the surface layer of the foundation bed;
and the control device comprises a controller, and the controller receives the detection data of the detection device and outputs the result to a display.
Therefore, through the railway roadbed drainage and monitoring equipment, even if a worker is not at a treatment site, the worker can know the drainage process and the drainage effect in real time, and can remotely close the drainage device and timely drive to the site when the drainage fails.
Further, the detection device comprises at least one row of soil moisture content sensors, and the at least one row of soil moisture content sensors are distributed at intervals along the track. Therefore, the whole slurry-turning mud-pumping damaged road section can be effectively detected.
Further, the at least one row of soil moisture content sensors are arranged on one side of the track where the cathode tubes of the drainage device are located. Therefore, the completion of drainage can be effectively indicated when the test result of the soil moisture content sensor arranged at the position reaches the preset value.
Further, the soil moisture content sensor is connected with the output end of the cathode tube. Therefore, the soil moisture content sensor and the cathode tube can be subjected to trenching, backfilling and installation at the same time, and the installation process is simplified.
Further, the display comprises a fixed display and/or a mobile display. Therefore, the detection data of the detection device can be acquired in real time conveniently.
Further, the drainage device comprises
The anode tube is obliquely placed downwards from one side of the rail, the output end of the anode tube is positioned in the surface layer of the foundation bed, and the output end of the anode tube faces the axis of the rail;
the cathode tube is obliquely and upwards arranged from the other side of the track, the output end of the cathode tube is positioned in the surface layer of the foundation bed, the output end of the cathode tube faces the axis of the track, and the cathode tube is connected with the drain pipe;
the electrode tube is positioned between the anode tube and the cathode tube and is also used as a cathode of the anode tube and an anode of the cathode tube, the output end of the electrode tube is positioned in the surface layer of the foundation bed, and the output end of the electrode tube faces the cathode tube;
a relay and a power supply;
the anode tube, the electrode tube and the cathode tube form an electrode group, and the electrode group is distributed at intervals along the track;
in each electrode group, the anode tube and the electrode tube form a first electrode pair, the electrode tube and the cathode tube form a second electrode pair, and the relay and the power supply alternately electrify the first electrode pair and the second electrode pair.
Furthermore, the solar water heater further comprises a cabinet body, wherein the cabinet body is provided with a heat dissipation part and a wiring hole.
Furthermore, the cabinet body is provided with rollers and/or pull rings; and the cabinet body is provided with an insulating coating.
Further, the heat dissipation component comprises a heat dissipation fan and a heat dissipation opening; the opening of the heat dissipation port faces downwards; a rain-proof sheet is arranged outside the heat dissipation fan; the cabinet body is provided with a rainproof shed.
Further, the detection device also comprises a water flow sensor arranged on a drain pipe of the drainage device. Therefore, the soil moisture content sensor and the water flow sensor have a synergistic effect, and the drainage effect is ensured.
The invention is further described with reference to the following figures and detailed description. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to assist in understanding the invention, and are included to explain the invention and their equivalents and not limit it unduly. In the drawings:
fig. 1 is a schematic view of a railroad bed drainage and monitoring device in embodiment 1 of the present invention.
Fig. 2 is a sectional view of a drainage apparatus of a railroad bed drainage and monitoring device and a railroad bed restoration structure in embodiment 1 of the present invention.
Fig. 3 is a plan view of a drainage apparatus of a railroad bed drainage and monitoring device in embodiment 1 of the present invention.
Fig. 4 is a sectional view of a drainage apparatus of a railroad bed drainage and monitoring device and a railroad bed restoration structure in embodiment 3 of the present invention.
Fig. 5 is a plan view of a drainage apparatus of a railroad bed drainage and monitoring device in embodiment 3 of the present invention.
The relevant references in the above figures are:
100-a track supporting layer, 110-a bed surface layer, 120-a steel rail, 130-a sleeper, 210-an anode tube, 220-a cathode tube, 230-an electrode tube, 240-a drain pipe, 300-an electrode group, 310-a first electrode pair, 320-a second electrode pair, 410-a first grouting hole, 420-a drain channel, 430-a second grouting hole, 440-a cementing layer, 510-a grouting tube, 520-a sealing layer, 600-a cabinet body, 610-a relay, 620-a power supply, 630-a fixed display, 640-a rain-proof shed, 650-a rain-proof sheet, 660-an access door, 670-a heat dissipation opening and 680-a soil moisture content sensor;
Detailed Description
The invention will be described more fully hereinafter with reference to the accompanying drawings. Those skilled in the art will be able to implement the invention based on these teachings. Before the present invention is described in detail with reference to the accompanying drawings, it is to be noted that:
the technical solutions and features provided in the present invention in the respective sections including the following description may be combined with each other without conflict.
Moreover, the embodiments of the present invention described in the following description are generally only some embodiments of the present invention, and not all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
With respect to terms and units in the present invention. The terms "comprising," "having," and any variations thereof in the description and claims of this invention and the related sections are intended to cover non-exclusive inclusions.
The railroad bed described in the following examples includes a rail support layer 100 and a bed skin 110 below the rail support layer 100, with a rail above the rail support layer 100, and the bed skin 110 having a thickness of 60 cm. The track comprises rails 120 and ties 130, with adjacent ties 130 being spaced 0.6m apart.
The track can be a ballastless track or a ballast track. When ballastless track is present, the track support layer 100 may be referred to as a bed plate. When ballast tracks are used, the track supporting layer 100 may be referred to as a ballast layer.
Example 1
The railroad bed drainage and monitoring apparatus shown in fig. 1 includes a drainage device, a detection device, a control device, and a cabinet 600.
The detection device comprises a soil moisture content sensor 680 arranged in the surface layer 110 of the foundation bed; the soil moisture content sensors 680 are arranged in a row and distributed at intervals of 1.2m along the track.
The control device includes a controller that receives the detection data of the detection device and outputs the result to a display, which includes a fixed display 630 and a mobile display.
The cabinet body 600 is provided with heat dissipation components, wiring holes, rollers, a rain-proof shed 640 and an insulating coating. The wiring hole is arranged below the right side of the cabinet body 600. The fixed display 630 is disposed at the front side of the cabinet 600. The heat dissipation part is including locating the heat dissipation fan of cabinet body 600 left and right sides top and locating the thermovent 670 of left side below, the opening of thermovent 670 is down, the heat dissipation fan is equipped with waterproof piece 650 outward. The rear side of the cabinet body 600 is an access door 660.
As shown in fig. 2 to 3, the drainage device is an electroosmotic drainage device, and includes an anode tube 210, a cathode tube 220, an electrode tube 230, a relay 610, and a power supply 620, wherein a controller controls the operation of the relay 610 and the power supply 620, and the relay 610 and the power supply 620 are provided at the front side of the cabinet 600.
The anode tube 210 is placed obliquely downward from one side of the rail, the output end of the anode tube 210 is positioned in the bed surface layer 110, and the output end faces the axis of the rail; the anode tube 210 forms an angle of 15 ° with the horizontal plane. At least the tube body of the anode tube 210 facing the cathode tube 220 of the anode tube 210 and the electrode tube 230 is provided with a through hole.
The cathode tube 220 is placed obliquely upwards from the other side of the rail, the output end of the cathode tube 220 is positioned in the surface layer 110 of the foundation bed, the output end faces the axis of the rail, and the cathode tube 220 is connected with the drain pipe 240; the cathode tube 220 has a water discharge gradient of 3%. The body of the cathode tube 220 is provided with through holes distributed annularly, and a filter layer is arranged outside the body.
The electrode tube 230 is located between the anode tube 210 and the cathode tube 220 and is also used as the cathode of the anode tube 210 and the anode of the cathode tube 220, the output end of the electrode tube 230 is located in the bed surface layer 110 and the output end faces the cathode tube 220; the electrode tube 230 forms an angle of 45 ° with the horizontal plane.
The anode tube 210, the electrode tube 230 and the cathode tube 220 form an electrode group 300, and the electrode group 300 is distributed along the track at intervals of 0.6 m.
In each electrode group 300, the anode tube 210 and the electrode tube 230 form a first electrode pair 310, the electrode tube 230 and the cathode tube 220 form a second electrode pair 320, and the relay 610 and the power supply 620 alternately energize the first electrode pair 310 and the second electrode pair 320.
The distance between the input end of the anode tube 210 and the input end of the electrode tube 230 is 1.82 m; the distance between the input end of the electrode tube 230 and the output end of the cathode tube 220 is 1.85 m.
The soil moisture content sensor 680 is arranged on one side of the track where the cathode tube 220 is located and connected with the output end of the cathode tube 220. The output ends of the anode tube 210, the electrode tube 230 and the cathode tube 220 and the soil moisture content sensor 680 are located at a depth of 40 cm in the surface layer 110 of the foundation bed.
The method for renovating the slurry bleeding of the railway subgrade comprises the following steps:
(1) installing the drainage device at a railway subgrade mud pumping disease point, wherein the anode pipe 210 and the electrode pipe 230 are installed in a drilling mode, and the cathode pipe 220 and the soil moisture content sensor 680 are installed in a ditching and backfilling mode;
(2) alternately electrifying the first electrode pair 310 and the second electrode pair 320 until the drainage rate of the drainage pipe 240 and/or the water content of the bed surface layer 110 reach a preset value; during which a second slurry capable of cementing with the bed surface layer 110 soil into a cementing layer 440 is injected through the anode tube 210;
(3) after the anode tube 210 and the electrode tube 230 are pulled out, the first grouting hole 410 and the second grouting hole 430 are formed, respectively, and then the first grouting hole 410 and the second grouting hole 430 are filled with the first slurry.
In the step (2), the energization is carried out in an intermittent manner, and the intermittent energization is preferably carried out for 10 minutes after every 3 hours of energization;
in step (2), the ratio of the time lengths of the alternate energization of the first electrode pair 310 and the second electrode pair 320 is 1: specifically, the energization is stopped when the intermittent energization time of the first electrode pair 310 reaches 24 hours, and then the second electrode pair 320 is intermittently energized for 48 hours, so that the energization time period ratio is alternately energized.
In the step (2), the second slurry comprises a first cementing material injected on the 3 rd day of electrification and a second cementing material injected on the 10 th day of electrification, and the first cementing material and the second cementing material are used for cementing the soil body of the surface layer 110 of the foundation bed through a chemical reaction; the first cementing agent is a calcium chloride solution with the mass fraction of 26%, and the second cementing agent is a sodium silicate solution with the mass fraction of 20%.
The railway roadbed repairing structure formed by the method and the equipment comprises a first grouting hole 410, a drainage channel 420, a second grouting hole 430 and a cementing layer 440, wherein the first grouting hole 410 is formed after the anode tube 210 is pulled out, the drainage channel 420 is formed by the cathode tube 220 and the drainage tube 240, the second grouting hole 430 is formed after the electrode tube 230 is pulled out, and the cementing layer 440 is formed by cementing a second slurry injected through at least the anode tube 210 of the anode tube 210 and the electrode tube 230 with a foundation bed surface layer 110 soil body; the first grouting hole 410 and the second grouting hole 430 are filled with first slurry.
Example 2
Compared with the embodiment 1, the railroad bed drainage and monitoring device of the embodiment has the following differences: and also includes a water flow sensor provided on the drain pipe 240.
Example 3
Compared with the embodiment 1, the railway roadbed slurry dumping and mud pumping treatment method and the railway roadbed repairing structure of the embodiment have the following differences: further comprising the step (4): a grout pipe 510 is installed with an output end of the grout pipe 510 positioned between the rail supporting layer 100 and the bed skin 110, and then a first grout is injected through the grout pipe 510. As shown in fig. 4 to 5, the railway roadbed repairing structure obtained thereby further comprises a grouting pipe 510, a sealing layer 520 formed by curing the first grout injected through the grouting pipe 510 and located between the track supporting layer 100 and the foundation bed surface layer 110, and the first grout filled in the grouting pipe 510. The thickness of the sealing layer 520 is 10 cm.
The grouting pipes 510 are arranged in two rows and are respectively located at the outer sides of the two steel rails 120, and each row of grouting pipes 510 is distributed at intervals of 1.2 m.
The first slurry in the above example was an ultra-fine cement-based grouting material with a water cement ratio of 0.4, and was doped with 8% o of basalt fibers with a fiber length of 6 mm.
In the above embodiment, the anode tube 210, the cathode tube 220, and the electrode tube 230 are all made of galvanized steel tubes.
The contents of the present invention have been explained above. Those skilled in the art will be able to implement the invention based on these teachings. All other embodiments, which can be derived by a person skilled in the art from the above description without inventive step, shall fall within the scope of protection of the present invention.
Claims (10)
1. Railway roadbed drainage device, the road bed includes track supporting layer (100) and bedbed top layer (110) of track supporting layer (100) below, and track supporting layer (100) top is the track, its characterized in that: the device comprises
The anode tube (210) is placed obliquely downwards from one side of the rail, the output end of the anode tube (210) is positioned in the bedspread (110), and the output end faces the axis of the rail;
the cathode tube (220), the said cathode tube (220) is placed from another side of orbit to the upper slope, the output end of the said cathode tube (220) is located in the superficial layer of bedding (110) and the output end faces the axis of orbit, the said cathode tube (220) is connected with water drainage pipe (240);
the electrode tube (230) is positioned between the anode tube (210) and the cathode tube (220) and is also used as a cathode of the anode tube (210) and an anode of the cathode tube (220), the output end of the electrode tube (230) is positioned in the base bed surface layer (110), and the output end faces the cathode tube (220);
a relay (610) and a power source (620);
the anode tube (210), the electrode tube (230) and the cathode tube (220) form an electrode group (300), and the electrode group (300) is distributed at intervals along the track;
in each electrode group (300), the anode tube (210) and the electrode tube (230) form a first electrode pair (310), the electrode tube (230) and the cathode tube (220) form a second electrode pair (320), and the relay (610) and the power supply (620) enable the first electrode pair (310) and the second electrode pair (320) to be electrified alternately.
2. A railroad bed drainage arrangement as set forth in claim 1, wherein: the included angle between the anode tube (210) and the horizontal plane is 10-20 degrees; the drainage gradient of the cathode tube (220) is 2% -4%; the included angle between the electrode tube (230) and the horizontal plane is 40-50 degrees; the distance between the adjacent electrode groups (300) is 0.4-0.8 m; the output ends of the anode tube (210), the electrode tube (230) and the cathode tube (220) are positioned at the depth of 35-45 cm in the surface layer (110) of the foundation bed.
3. A railroad bed drainage arrangement as set forth in claim 1, wherein: at least the tube body of the anode tube (210) facing the cathode tube (220) in the anode tube (210) and the electrode tube (230) is provided with a through hole.
4. A railroad bed drainage arrangement as set forth in claim 1, wherein: the tube body of the cathode tube (220) is provided with through holes distributed annularly; and a filter layer is arranged outside the cathode tube (220).
5. Railway roadbed repair structure, its characterized in that: comprises that
A first grouting hole (410), said first grouting hole (410) being formed after extracting the anode tube (210) according to any one of claims 1 to 4;
a drain channel (420), the drain channel (420) being constituted by the cathode tube (220) of one of claims 1 to 4 and the drain tube (240);
a second injection hole (430), the second injection hole (430) being formed after the electrode tube (230) according to any one of claims 1 to 4 is pulled out;
the cementing layer (440) is formed by cementing second slurry injected through at least the anode tube (210) in the anode tube (210) and the electrode tube (230) and a soil body of the foundation bed surface layer (110);
the first grouting hole (410) and the second grouting hole (430) are filled with first slurry.
6. A railroad bed repair construction as set forth in claim 5, wherein: the track supporting layer is characterized by further comprising a grouting pipe (510), a sealing layer (520) formed by curing first slurry injected through the grouting pipe (510) and located between the track supporting layer (100) and the bedding surface layer (110), and the first slurry filled in the grouting pipe (510).
7. The method for renovating the slurry bleeding of the railway subgrade comprises the following steps:
(1) installing the railroad bed drainage device according to any one of claims 1 to 4 at a site of a railroad bed mud-break;
(2) alternately electrifying the first electrode pair (310) and the second electrode pair (320) until the drainage rate of the drainage pipe (240) and/or the water content of the surface layer (110) of the foundation bed reach a preset value; during the process, injecting a second slurry which can be cemented with the soil body of the surface layer (110) of the foundation bed into a cementing layer (440) through the anode tube (210);
(3) and after the anode tube (210) and the electrode tube (230) are pulled out, a first grouting hole (410) and a second grouting hole (430) are respectively formed, and then the first grouting hole (410) and the second grouting hole (430) are filled with first slurry.
8. The method for renovating the slurry of the railroad bed according to claim 7, wherein: in the step (2), intermittent electrification is adopted, and the intermittent electrification is preferably carried out for 5-15 minutes after 2-4 hours of electrification; and/or in the step (2), the ratio of the time length of the alternating energization of the first electrode pair (310) and the second electrode pair (320) is 1: (1.5-2.5).
9. The method for renovating the slurry of the railroad bed according to claim 7, wherein: the second slurry comprises a first cementing material injected within 6-8 days of electrification and a second cementing material injected after 8-10 days of electrification, and the first cementing material and the second cementing material are used for cementing a soil body of the surface layer (110) of the foundation bed through a chemical reaction; preferably, the first cementing agent is a calcium chloride solution and the second cementing agent is a sodium silicate solution.
10. The method for renovating the slurry of the railroad bed according to claim 7, wherein: installing the anode tube (210) and the electrode tube (230) in a drilling mode; and mounting the cathode tube (220) by adopting a ditching and backfilling mode.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112523008A (en) * | 2020-11-26 | 2021-03-19 | 广西柳州钢铁集团有限公司 | Slurry-water isolation stone ballast track bed and construction method thereof |
| CN114698571A (en) * | 2022-03-15 | 2022-07-05 | 长江勘测规划设计研究有限责任公司 | Large-span single-row suspended electric fish blocking fence |
| CN114818998A (en) * | 2022-06-28 | 2022-07-29 | 浙江大学 | Method for judging mud pumping disease state of ballastless track foundation bed during slurry turning |
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2020
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523008A (en) * | 2020-11-26 | 2021-03-19 | 广西柳州钢铁集团有限公司 | Slurry-water isolation stone ballast track bed and construction method thereof |
| CN114698571A (en) * | 2022-03-15 | 2022-07-05 | 长江勘测规划设计研究有限责任公司 | Large-span single-row suspended electric fish blocking fence |
| CN114818998A (en) * | 2022-06-28 | 2022-07-29 | 浙江大学 | Method for judging mud pumping disease state of ballastless track foundation bed during slurry turning |
| CN114818998B (en) * | 2022-06-28 | 2022-09-13 | 浙江大学 | Method for judging mud pumping disease state of ballastless track foundation bed during slurry turning |
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