Water drainage system and construction method for roadside filling area

Abstract

The present invention discloses a system and construction method for draining water from a roadside filling area, and relates to the technical field of highway drainage. The system is applied to a highway in a mountainous area, and a target filling area is arranged on one side of the highway. The system includes a water collection well, a torrent trough, and a drainage pipe. The water collection well is arranged in the target filling area and is used to collect water that infiltrates in the target filling area. The torrent trough is arranged on the other side of the highway in the mountainous area. The drainage pipe is arranged under the roadbed of the highway in the mountainous area. One end of the drainage pipe is connected to the inner cavity of the water collection well, and the other end of the drainage pipe is connected to the torrent trough. The drainage pipe is used to divert the infiltrating water collected by the water collection well to the torrent trough. The technical solution provided by the present invention can collect the water that infiltrates in the filling area and drain it to the other side of the highway, so as to avoid the adverse effect of long-term immersion of the accumulated water on the stability of the roadbed.

Description

Technical Field

[0001] The invention relates to the technical field of highway drainage, and in particular to a highway roadside fill area water drainage system and a construction method. Background Art

[0002] The roadside fill area of ​​a highway refers to the area where soil is filled in a specific area to improve the terrain during the construction of the highway in order to solve drainage problems, reduce structure construction, speed up construction progress, etc.

[0003] For mountain highways, in the rainy season, a large amount of rainwater seeps through the surface of the fill area on the side of the highway, which can easily cause the roadbed to be soaked by rainwater. As the water level in the fill area continues to rise, the water content of the soil will continue to increase, which will cause the interstitial water pressure of the soil to rise and reduce the effective stress of the soil, thereby reducing the stability of the roadbed and easily causing safety accidents. Summary of the invention

[0004] The main purpose of the present invention is to provide a highway roadside fill area water drainage system, which aims to solve the problem of easy water accumulation in the roadside fill area of ​​the operating mountain highway in the rainy season, so as to improve the stability of the roadbed.

[0005] To achieve the above-mentioned purpose, the highway roadside filling area water drainage system proposed by the present invention is applied to mountain highways, and a target filling area is set on one side of the mountain highway; the highway roadside filling area water drainage system comprises:

[0006] A water collection well is arranged in the target filling area; the water collection well is used to collect water that seeps in the target filling area;

[0007] a rapids trough, set on the other side of the said mountain highway;

[0008] A drainage pipe is arranged below the roadbed of the mountain highway; one end of the drainage pipe is connected to the inner cavity of the water collection well, and the other end of the drainage pipe is connected to the rapid flow trough; the drainage pipe is used to guide the infiltrated water collected by the water collection well to the rapid flow trough.

[0009] In one embodiment, the highway roadside fill area water drainage system also includes a collecting pipe, one end of which passes through the side wall of the water collection well and is connected to the inner cavity of the water collection well, and the other end of the collecting pipe is arranged at the edge of the target fill area; the collecting pipe is used to divert the infiltrating water in the target fill area into the inner cavity of the water collection well.

[0010] In one embodiment, the edge of the target fill area is tilted downward in a horizontal direction close to the water collection well; the collecting pipe adopts an upward-inclined drainage pipe, the lower end of the collecting pipe passes through the side wall of the water collection well and is connected to the inner cavity of the water collection well, and the higher end of the collecting pipe is set at the edge of the target fill area.

[0011] In one embodiment, the highway roadside fill area water drainage system includes at least two of the collecting pipes; at least two of the collecting pipes are arranged at intervals along the circumference of the water collection well.

[0012] In one embodiment, at least two of the collecting pipes are spaced apart along the depth direction of the water collecting well.

[0013] In one embodiment, the drainage pipe is arranged to be inclined downward, the higher end of the drainage pipe passes through the side wall of the water collection well and is connected with the inner cavity of the water collection well, and the lower end of the drainage pipe is connected with the rapid flow trough; the drainage pipe is arranged to be inclined downward from the water collection well to the rapid flow trough.

[0014] In one embodiment, the connection position between the drainage pipe and the water collection well is used as the first node, and the connection position between the drainage pipe and the rapids trough is used as the second node. The first node and the second node satisfy the following relationship:

[0015] 3%≤H / L≤5%

[0016] Wherein, H is the height difference between the first node and the second node, and L is the horizontal distance between the first node and the second node.

[0017] In one embodiment, the connection position between the drainage pipe and the water collection well is higher than the bottom surface of the water collection well to form a buffer zone at the bottom of the water collection well.

[0018] In one embodiment, a filter assembly is disposed in the water collection well, and the filter assembly is used to filter the infiltrating water entering the inner cavity of the water collection well.

[0019] In one embodiment, the drainage pipe is a traction and drag pipe made of high-density polyethylene.

[0020] The present invention also proposes a construction method for the water drainage system for the roadside filling area as described above, the construction method comprising the following steps:

[0021] The water collection well is sunk into the target filling area in sections by using a caisson construction method;

[0022] The rapid flow trough is constructed on the other side of the mountain highway, and a connecting through hole and a connecting flow collecting pipe are opened on the side wall of the water collecting well, the connecting through hole is connected to the inner cavity of the water collecting well, and the flow collecting pipe adopts an upward inclined drainage pipe;

[0023] Using a horizontal directional drilling rig to drill an underground passage from the rapids trough to the water collection well until the drill bit of the horizontal directional drilling rig reaches the connecting through hole;

[0024] Sending the drainage pipe into the inner cavity of the water collection well, and fixing one end of the drainage pipe to the drill bit part of the horizontal directional drilling machine, so as to pull the one end of the drainage pipe along the underground passage to the rapids trough by the horizontal directional drilling machine;

[0025] The two ends of the drainage pipe are respectively fixed to the side walls of the rapid flow trough and the water collection well.

[0026] The technical solution of the present invention sets a collection well in the target filling area on one side of the mountain highway to collect the water that seeps in the target filling area through the collection well, and then uses the drainage pipe under the roadbed to guide the water collected in the collection well to the rapids trough on the other side of the highway, and finally discharges the water out quickly through the rapids trough; this solution can timely drain the water that seeps in the target filling area to other areas in a simple, reliable and low-cost manner, which can avoid the water level in the target filling area being too high and the water body being immersed for a long time, resulting in a decrease in the stability of the roadbed, thereby effectively solving the problem of safety accidents easily caused by insufficient roadbed stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0028] Figure 1 A front view structural schematic diagram of an embodiment of a highway roadside fill area water drainage system provided by the present invention;

[0029] Figure 2 A schematic diagram of the top view of a water collection well in an embodiment of a water drainage system for a roadside fill area provided by the present invention;

[0030] Figure 3 A partially enlarged structural schematic diagram of an embodiment of a highway roadside fill area water drainage system provided by the present invention;

[0031] Figure 4A schematic diagram of the construction process of an embodiment of a construction method of a highway roadside fill area water drainage system provided by the present invention.

[0032] Description of Figure Numbers:

[0033] 100, mountain highway; 200, target filling area;

[0034] 1. Collection well; 2. Rapids trough; 3. Drainage pipe; 4. Collecting pipe; 11. Buffer zone.

[0035] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] The roadside fill area of ​​a highway refers to the area where soil is filled to improve the terrain during the construction of the highway in order to solve drainage problems, reduce the construction of structures, and speed up the construction progress. For mountain highways, during the rainy season, a large amount of rainwater seeps through the surface of the fill area on the side of the highway, which can easily cause the roadbed to be soaked by rainwater. As the water level in the fill area continues to rise, the water content of the soil will continue to increase, which will cause the interstitial water pressure of the soil to rise and reduce the effective stress of the soil, thereby reducing the stability of the roadbed and easily causing safety accidents.

[0040] In order to solve this technical problem, the present invention proposes a water drainage system for the roadside fill area, which can concentrate the water that seeps in the fill area and drain it to the other side of the highway to avoid long-term immersion of water and adverse effects on roadbed stability.

[0041] See also Figure 1 In one embodiment of the present invention, the highway roadside filling area water drainage system is applied to a mountain highway 100, and a target filling area 200 is set on one side of the mountain highway 100; the highway roadside filling area water drainage system includes:

[0042] A water collection well 1 is arranged in the target filling area 200; the water collection well 1 is used to collect the water that seeps in the target filling area 200;

[0043] Rapids Trough 2, located on the other side of the mountain highway 100;

[0044] The drainage pipe 3 is arranged under the roadbed of the mountain highway 100; one end of the drainage pipe 3 is connected to the inner cavity of the water collection well 1, and the other end of the drainage pipe 3 is connected to the rapids trough 2; the drainage pipe 3 is used to guide the infiltrated water collected by the water collection well 1 to the rapids trough 2.

[0045] In this embodiment, the water collection well 1 can be set up with reference to the water well structure used for collecting and storing groundwater and seepage water in existing municipal facilities. The top of the water collection well 1 should be lower than the highest position of the target filling area 200 to ensure that the water infiltrating in the target filling area 200 can be converged into the inner cavity of the water collection well 1 through the upper opening of the water collection well 1. When the water stored in the inner cavity of the water collection well 1 reaches a certain amount, this part of the water can be discharged to the rapids trough 2 on the other side of the highway through the drainage pipe 3. The rapids trough 2 refers to an artificial ditch with a slope greater than the critical slope, which has the function of guiding water flow when the distance is short and the water level difference is large; by setting the rapids trough 2, the water diverted by the drainage pipe 3 can be quickly discharged to the outside to avoid water accumulation.

[0046] It can be seen that in this embodiment, a water collection well 1 is set in the target filling area 200 on one side of the mountain highway 100 to collect the water that seeps into the target filling area 200 through the water collection well 1, and then the water collected in the water collection well 1 is diverted to the rapids trough 2 on the other side of the highway by using the drainage pipe 3 under the roadbed, and finally the water is quickly discharged outward through the rapids trough 2; this scheme can timely drain the water that seeps into the target filling area 200 to other areas in a simple, reliable and low-cost manner, which can avoid the water level in the target filling area 200 being too high and the water body being immersed for a long time, which leads to a decrease in the stability of the roadbed, thereby effectively solving the problem of safety accidents that are easily caused by insufficient roadbed stability.

[0047] Optionally, refer to Figure 1 The highway roadside filling area water drainage system also includes a collecting pipe 4, one end of which passes through the side wall of the water collecting well 1 and is connected to the inner cavity of the water collecting well 1, and the other end of the collecting pipe 4 is arranged at the edge of the target filling area 200; the collecting pipe 4 is used to guide the infiltrating water in the target filling area 200 to the inner cavity of the water collecting well 1.

[0048] The traditional water collection well 1 has only one opening. For the target filling area 200 with a more complex structure, the infiltrating water in some areas is often difficult to smoothly converge into the upper opening of the water collection well 1 due to reasons such as water channel obstruction, and water is easily accumulated in this area. Based on this problem, the present embodiment has a corresponding flow collecting pipe 4 on the vertical side wall of the water collection well 1. The end of the flow collecting pipe 4 away from the water collection well 1 can be set in an area in the target filling area 200 where the water is difficult to drain normally. In this way, the accumulated water in this area that is difficult to drain can be diverted to the water collection well 1 through the flow collecting pipe 4, thereby reducing the accumulation of infiltrating water in the target filling area 200, improving the drainage effect, and thereby further improving the stability of the roadbed.

[0049] Optionally, refer to Figure 1 The edge of the target filling area 200 is tilted downward in the horizontal direction close to the water collection well 1; the collecting pipe 4 adopts an upward inclined drainage pipe, the lower end of the collecting pipe 4 passes through the side wall of the water collection well 1 and is connected to the inner cavity of the water collection well 1, and the higher end of the collecting pipe 4 is set at the edge of the target filling area 200.

[0050] In this embodiment, the target filling area 200 is Figure 1The funnel-shaped water collection well 1 is set at the center of the target filling area 200, so that the infiltrating water in the target filling area 200 can be gathered to the lower part under the action of gravity, so that it can flow more smoothly into the water collection well 1. As for the edge position of the target filling area 200 where water accumulation is more likely to occur, the water body in this part of the area is drained by the collecting pipe 4 to ensure that this part of the water body can flow smoothly into the water collection well 1 through the collecting pipe 4; wherein, the collecting pipe 4 adopts an inclined drainage pipe with one end tilted upward, which can ensure that the water body in the collecting pipe 4 flows smoothly into the water collection well 1 under the action of gravity.

[0051] Optionally, refer to Figure 1 and Figure 2 The water drainage system for the roadside filling area includes at least two collecting pipes 4; at least two collecting pipes 4 are arranged at intervals along the circumference of the water collection well 1.

[0052] Optionally, refer to Figure 1 and Figure 2 At least two collecting pipes 4 are arranged at intervals along the depth direction of the water collection well 1.

[0053] By setting up multiple collecting pipes 4 in the circumferential and vertical directions (i.e., the depth direction of the collection well 1), the infiltrating water in multiple directions and at different heights can be diverted, thereby further reducing the accumulation of the infiltrating water in the target filling area 200 and further improving the drainage effect.

[0054] Optionally, refer to Figure 1 The drainage pipe 3 is arranged to be inclined downward, the higher end of the drainage pipe 3 passes through the side wall of the water collection well 1 and is connected with the inner cavity of the water collection well 1, and the lower end of the drainage pipe 3 is connected with the rapid flow trough 2; the drainage pipe 3 is arranged to be inclined downward from the water collection well 1 to the rapid flow trough 2.

[0055] By setting the drainage pipe 3 to be inclined downward from the water collection well 1 to the rapids trough 2, the water stored in the water collection well 1 can flow smoothly along the drainage pipe 3 to the low rapids trough 2 under the action of gravity, avoiding the problem of water blockage in the drainage pipe 3 and improving the drainage efficiency of the drainage system.

[0056] Optionally, refer to Figure 1 , the connection position between the drainage pipe 3 and the water collection well 1 is taken as the first node, and the connection position between the drainage pipe 3 and the rapids trough 2 is taken as the second node. The first node and the second node satisfy the following relationship:

[0057] 3%≤H / L≤5%

[0058] Wherein, H is the height difference between the first node and the second node, and L is the horizontal distance between the first node and the second node.

[0059] like Figure 1 As shown, when the inclination angle of the drainage pipe 3 is set in the above manner, it can ensure that the water can flow smoothly to a lower place along the drainage pipe 3 under the action of gravity, and at the same time avoid adverse effects on construction difficulty, roadbed stability, etc. caused by excessive inclination of the drainage pipe 3.

[0060] Optionally, refer to Figure 1 and Figure 3 The connection position between the drainage pipe 3 and the water collection well 1 is higher than the bottom surface of the water collection well 1 to form a buffer zone 11 at the bottom of the water collection well 1.

[0061] Specifically, the horizontal plane where the drainage pipe 3 and the water collection well 1 are connected is used as the target plane, and the inner cavity between the target plane and the bottom surface of the water collection well 1 constitutes the buffer zone 11. By setting the buffer zone 11, a part of the water flowing into the water collection well 1 can be stored to ensure that the water in the water collection well 1 will slowly flow through the drainage pipe 3 to the rapids trough 2 after the water level in the water collection well 1 reaches the target plane; and when the water level in the water collection well 1 has not yet reached the target plane, the water stored in the water collection well 1 can be fully precipitated in the buffer zone 11, so that the impurities in this part of the water settle to the bottom of the water collection well 1, so that the impurity content in the water flowing into the drainage pipe 3 can be reduced, thereby avoiding the problem of clogging of the drainage pipe 3 due to excessive impurities.

[0062] Optionally, refer to Figure 1 A filter assembly (not shown in the figure) is provided in the water collection well 1, and the filter assembly is used to filter the infiltrating water entering the inner cavity of the water collection well 1; wherein, the filter assembly can adopt any device and combination that can be applied to engineering facilities and can achieve the solid-liquid separation effect, and is not limited here. By providing the filter assembly, the water flowing into the water collection well 1 from the target filling area 200 can be initially filtered to avoid the problem of pipe blockage caused by large impurities entering the drainage pipe 3 with the water.

[0063] Optionally, refer to Figure 1 The drainage pipe 3 is made of a traction and drag pipe made of high-density polyethylene (i.e., HDPE pipe). HDPE pipe has the advantages of reliable connection, good low-temperature impact resistance, good stress cracking resistance, good chemical corrosion resistance, aging resistance, long service life, good wear resistance, good flexibility, small water flow resistance, and convenient transportation. It can ensure the normal drainage of water bodies in complex application environments and is suitable for various construction methods such as directional drilling. Specifically, after the underground drilling is completed, the drainage pipe 3 can be towed from one side of the highway to the other side of the highway, and the two ends of the drainage pipe 3 can be connected and fixed to the water collection well 1 and the rapids trough 2 by hot-melt connection or other methods.

[0064] See also Figure 1and Figure 4 The present invention also proposes a construction method for the highway roadside fill area water drainage system in any of the above embodiments, the construction method comprising the following steps:

[0065] The caisson construction method is used to sink the water collection well 1 in sections to the target filling area 200;

[0066] A rapid flow trough 2 is constructed on the other side of the mountain highway 100, and a connecting through hole and a connecting flow collecting pipe 4 are opened on the side wall of the water collecting well 1. The connecting through hole is connected to the inner cavity of the water collecting well 1, and the flow collecting pipe 4 adopts an upward inclined drainage pipe;

[0067] A horizontal directional drilling rig is used to drill an underground passage from the rapids trough 2 to the water collection well 1 until the drill bit of the horizontal directional drilling rig reaches the connecting through hole;

[0068] Send the drainage pipe 3 into the inner cavity of the water collection well 1, and fix one end of the drainage pipe 3 to the drill bit part of the horizontal directional drilling machine, so as to pull the one end of the drainage pipe 3 along the underground passage to the rapids trough 2 through the horizontal directional drilling machine;

[0069] The two ends of the drainage pipe 3 are fixed to the side walls of the rapid flow trough 2 and the water collection well 1 respectively.

[0070] Specifically, the water collection well 1 can be divided into a plurality of prefabricated concrete well section modules along its depth direction. During the actual construction process, the caisson area is first located and drawn on the ground, and then the excavation equipment is used to dig a certain depth downward in the caisson area, and then the first layer of well section modules is placed in the caisson area; after the first layer of well section modules is firmly positioned in the vertical direction, the excavation equipment is continued to be used to dig downward in the enclosed area of ​​the first layer of well section modules; as the bottom of the first layer of well section modules is gradually hollowed out, the first layer of well section modules will slowly sink to the target filling area 200 below under the action of gravity; when the first layer of well section modules sinks to the point where their upper end faces are flush with the ground, the second layer of well section modules are piled on the first layer of well section modules, and then the above-mentioned excavation operation is continued to cause the well section modules to continue to sink; this cycle is repeated until the water collection well 1 composed of multiple well section modules sinks to the preset depth position of the target filling area 200, at which time the bottom of the water collection well 1 can be sealed to prevent groundwater from seeping in from the bottom, and thus the construction of the water collection well 1 is completed through the caisson construction method.

[0071] As for the directional drilling construction method of the drainage pipe 3, in the specific construction process, first determine the positions of the drill opening (i.e. the drilling entry position at the rapids trough 2) and the drill exit (i.e. the connecting through hole at the lower end of the water collection well 1) and record the relevant coordinate data, then fix the horizontal directional drilling rig at the location of the drill opening, drive the drill rod to rotate through the power equipment of the horizontal directional drilling rig, and drive the drill bit part from the drill opening into the ground through the rotating drill rod; the drill bit part is equipped with a guide module, which can feedback the drilling data in real time to help the construction personnel control and timely correct the drilling direction of the drill bit part, so that the drill bit part can accurately drill to the connecting through hole according to the preset path; when the drill bit part extends from the connecting through hole to the inner cavity of the water collection well 1, it can be removed The drill bit body of the drill bit part is replaced with the reaming tool, and one end of the drainage pipe 3 is fixed to the tail end of the reaming tool, and then the reaming tool is driven by the horizontal directional drilling rig to retreat along the underground passage previously drilled; during the retreat process, the rotating reaming tool can continuously expand the diameter of the underground passage along the retreat direction to reserve sufficient space for the drainage pipe 3, ensuring that the reaming tool can smoothly drag the drainage pipe 3 to move; when one end of the drainage pipe 3 is pulled to the drill opening at the rapids trough 2, the end of the drainage pipe 3 can be connected and fixed to the rapids trough 2 by hot-melt connection, and the other end of the drainage pipe 3 can be connected and fixed to the side wall of the water collection well 1 by hot-melt connection; in this way, the laying construction of the drainage pipe 3 is completed. This directional drilling construction method is efficient, accurate and easy to operate. It does not require excavation of the ground, effectively avoids the problem of easy deformation of the drainage pipe 3 due to the destruction of the upper soil layer, and prolongs the service life of the drainage pipe 3.

[0072] The specific structure of the highway roadside fill area water drainage system after construction is completed may refer to the above-mentioned embodiments. Since the construction method of the highway roadside fill area water drainage system adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, that is, the water that infiltrates in the target fill area 200 is drained to other areas in a simple, reliable and low-cost manner, which can avoid the water level in the target fill area 200 being too high and the water body being immersed for a long time, which leads to a decrease in roadbed stability, thereby effectively solving the problem of safety accidents easily caused by insufficient roadbed stability.

[0073] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A roadside filling area water drainage system, applied to mountain highways, where a target filling area is set on one side of the mountain highway, characterized in that: The highway roadside filling area water drainage system includes: A water collection well is arranged in the target filling area, and is used to collect water that seeps in the target filling area; the edge of the target filling area is arranged to be inclined downward in a direction close to the water collection well; the water that seeps in the target filling area flows into the inner cavity of the water collection well from the upper opening of the water collection well; a rapids trough, set on the other side of the said mountain highway; A drainage pipe is arranged under the roadbed of the mountain highway; one end of the drainage pipe is connected to the inner cavity of the water collection well, and the other end of the drainage pipe is connected to the rapid flow trough; the drainage pipe is used to guide the infiltrated water collected by the water collection well to the rapid flow trough; A collecting pipe, wherein the lower end of the collecting pipe passes through the side wall of the water collecting well and is connected to the inner cavity of the water collecting well, and the higher end of the collecting pipe is arranged at the edge of the target filling area; the collecting pipe is used to guide the infiltrating water body of the target filling area to the inner cavity of the water collecting well; The connection position between the drainage pipe and the water collection well is taken as the first node, and the connection position between the drainage pipe and the rapids trough is taken as the second node. The first node and the second node satisfy the following relationship: 3%≤H / L≤5% Wherein, H is the height difference between the first node and the second node, and L is the horizontal distance between the first node and the second node.

2. The highway roadside filling area water drainage system as claimed in claim 1, characterized in that: The highway roadside fill area water drainage system includes at least two of the collecting pipes; At least two of the collecting pipes are arranged at intervals along the circumference of the water collecting well; And / or, at least two of the collecting pipes are arranged at intervals along the depth direction of the water collection well.

3. The highway roadside filling area water drainage system as claimed in claim 1, characterized in that: The drainage pipe is arranged to be inclined downward, the higher end of the drainage pipe passes through the side wall of the water collection well and is connected with the inner cavity of the water collection well, and the lower end of the drainage pipe is connected with the rapid flow trough; the drainage pipe is arranged to be inclined downward from the water collection well to the rapid flow trough.

4. The highway roadside fill area water drainage system according to any one of claims 1 to 3, characterized in that: The connecting position between the drainage pipe and the water collection well is higher than the bottom surface of the water collection well, so as to form a buffer zone at the bottom of the water collection well.

5. The highway roadside fill area water drainage system according to any one of claims 1 to 3, characterized in that: A filter assembly is arranged in the water collection well, and the filter assembly is used to filter the infiltrating water entering the inner cavity of the water collection well.

6. The highway roadside fill area water drainage system according to any one of claims 1 to 3, characterized in that: The drainage pipe is a traction and drag pipe made of high-density polyethylene.

7. A construction method for a highway roadside fill area water drainage system according to any one of claims 1 to 6, characterized in that: The construction method comprises the following steps: The water collection well is sunk into the target filling area in sections by using a caisson construction method; The rapid flow trough is constructed on the other side of the mountain highway, and a connecting through hole and a connecting flow collecting pipe are opened on the side wall of the water collecting well, the connecting through hole is connected to the inner cavity of the water collecting well, and the flow collecting pipe adopts an upward inclined drainage pipe; Using a horizontal directional drilling rig to drill an underground passage from the rapids trough to the water collection well until the drill bit of the horizontal directional drilling rig reaches the connecting through hole; Sending the drainage pipe into the inner cavity of the water collection well, and fixing one end of the drainage pipe to the drill bit part of the horizontal directional drilling machine, so as to pull the one end of the drainage pipe along the underground passage to the rapids trough by the horizontal directional drilling machine; The two ends of the drainage pipe are respectively fixed to the side walls of the rapid flow trough and the water collection well.

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