CN112663406A - Roadbed disease treatment method - Google Patents
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- CN112663406A CN112663406A CN202011398587.8A CN202011398587A CN112663406A CN 112663406 A CN112663406 A CN 112663406A CN 202011398587 A CN202011398587 A CN 202011398587A CN 112663406 A CN112663406 A CN 112663406A
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 201000010099 disease Diseases 0.000 title claims abstract description 38
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- 239000002689 soil Substances 0.000 claims abstract description 59
- 238000005056 compaction Methods 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000000945 filler Substances 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims description 14
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- 230000000149 penetrating effect Effects 0.000 claims description 5
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- 230000035699 permeability Effects 0.000 claims description 3
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- 229910000831 Steel Inorganic materials 0.000 description 1
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Abstract
The invention relates to a roadbed disease treatment method, which comprehensively utilizes a process of compaction piles and drainage ditches. When the pile is compacted, firstly, a hole is formed on the roadbed to form a pile hole with the required specification; and filling the filler into the pile hole, and performing tamping operation to form the compaction pile in the roadbed. At the moment, the compaction piles and the roadbed form a composite foundation, so that the bearing capacity of the roadbed is improved, the settlement amount is reduced, and the wet limit property or liquefaction property of the roadbed is eliminated. Because the wash port sets up in the soil body slope, just the wash port is kept away from the one end in escape canal is higher than the wash port is close to the one end in escape canal, consequently, in the hydroenergy that converges to in the wash port by the road bed top in time arranges the escape canal for water content in the road bed reduces to under the frost heaving water content fast, effectively solves the frost heaving disease of road bed. In addition, compared with other treatment measures, the mode of combining the compaction piles with the drainage ditch does not need to block the line, and has no influence on normal operation and production.
Description
Technical Field
The invention relates to the technical field of roadbed treatment, in particular to a roadbed disease treatment method.
Background
In the normal operation of putting into of railway, the road bed often takes place diseases such as sinking, mud pumping out of the grout, takes big accurate railway as an example, because the technical standard who adopts during the construction is lower, and main disease is for passing through in the cutting form at K136 section circuit, and the grout piece stone curb rupture damage is serious, and local curb sinks to the phenomenon of extrusion road bed ditch outward that is obvious accompanies.
Meanwhile, the roadbed filling also has obvious sinking phenomenon and has large water content. The subgrade in the section has frost heaving diseases in the present year, and the maximum frost heaving amount is about 15-20 mm. When the air temperature rises again, the roadbed is thawed and sinks, and roadbed diseases such as slurry turning, mud pumping and the like occur. In addition, the side slope catchment area of the road section is large, surface water seeps into the road section and is drained to the face empty surface and collected in the side ditch, but the longitudinal slope of the drainage ditch is only 0.2 percent, so that water flow cannot be drained to culverts on two sides normally, and the drainage ditch is frozen and swelled for many times in the long-term use process, so that the drainage ditch on the right side is broken and the drainage system fails.
The traditional processing method of the cutting subgrade can be used for treating subgrade sinking, ballast sinking grooves, slurry dumping, mud pumping and other subgrade freezing injuries, but the treatment project can seriously affect the transport capacity of the line and even interrupt the line operation; meanwhile, the treatment effect of the freezing injury is not good.
Disclosure of Invention
Therefore, a roadbed disease treatment method is needed, and the diseases such as roadbed sinking, slurry turning and mud pumping are effectively treated under the condition that the normal operation of a railway is not influenced.
A roadbed disease treatment method comprises the following steps: drilling a hole on the roadbed to form a pile hole; after drilling, filling filler into the pile hole, and performing tamping operation to form a compacted pile; arranging a drainage ditch on the soil body along at least one side of the roadbed; and a drain hole is formed in the inner wall of the drainage ditch, so that one end of the drain hole extends to the lower part of the roadbed, wherein the drain hole is obliquely arranged in the soil body, and one end, far away from the drainage ditch, of the drain hole is higher than one end, close to the drainage ditch, of the drain hole.
The roadbed disease treatment method comprehensively utilizes the process of the compaction piles and the drainage ditches. When the pile is compacted, firstly, a hole is formed on the roadbed to form a pile hole with the required specification; and filling the filler into the pile hole, and performing tamping operation to form the compaction pile in the roadbed. At the moment, the compaction piles and the roadbed form a composite foundation together, so that the bearing capacity of the roadbed is improved, the settlement amount is reduced, the wet limit or liquefaction of the roadbed is eliminated, and the diseases such as slurry turning, mud pumping and the like of the roadbed in the traffic process are effectively treated. Meanwhile, in the drainage ditch construction process, drainage ditches are arranged on one side of the roadbed or the two opposite sides of the roadbed; and then, the inner wall of the drainage ditch is provided with a drainage hole, so that one end of the drainage hole extends to the lower part of the roadbed, and the water stored in the roadbed can permeate into the drainage hole conveniently. Because the wash port sets up in the soil body slope, just the wash port is kept away from the one end in escape canal is higher than the wash port is close to the one end in escape canal, consequently, converge in the hydroenergy in the wash port in time arrange the escape canal for water content in the road bed reduces to under the frost heaving water content fast, effectively solves the frost heaving disease of road bed. In addition, compared with other treatment measures, the mode of combining the compaction piles with the drainage ditch does not need to seal the line, has no influence on normal operation and production, and ensures normal passing of a railway construction interval on the premise of effectively solving the problems of frost heaving, slurry turning, mud pumping and the like of the line.
In one embodiment, the step of filling the pile hole with the filler and performing the tamping operation comprises: tamping the bottom of the pile hole; filling the lime-soil filler with a preset proportion into the pile hole layer by layer, and tamping the filler filled layer by layer each time to form the compaction pile to a preset height.
In one embodiment, after the step of filling the filler into the pile hole and performing the tamping operation, the method further includes: excavating the part of the compaction pile, which exceeds the roadbed surface; after digging, paving a soil cushion layer on the top of the compaction pile; and after paving, tamping the soil cushion layer.
In one embodiment, after the step of compacting the soil mat, the method further comprises: sealing the pile hole with clay on the soil cushion layer to form a sealing layer; and compacting the sealing layer, and controlling the sealing layer to be higher than the roadbed surface.
In one embodiment, the step of drilling a hole in the subgrade comprises: arranging a plurality of pile holes at intervals on the top of the roadbed, and controlling the distance between every two adjacent pile holes to be 0.5-1.0 m; and arranging a plurality of pile holes on any side surface of the roadbed, controlling the distance between the pile holes in the horizontal direction to be 0.2-0.6 m, and controlling the distance between the pile holes in the vertical direction to be 0.6-1.0 m.
In one embodiment, after the step of forming a drainage ditch along at least one side of the roadbed on the soil body, the method further comprises the following steps: and arranging blind ditches on the drainage ditch, and communicating the blind ditches with the hidden culverts.
In one embodiment, after the step of forming a drainage ditch along at least one side of the roadbed on the soil body, the method further comprises the following steps: and a drainage hole leading to the drainage ditch is formed in one side surface of the roadbed facing the drainage ditch.
In one embodiment, the steps further comprise: and installing a soft water permeable pipe in the drainage hole, so that the soft water permeable pipe is laid along the length direction of the drainage hole.
In one embodiment, the step of installing a flexible water permeable pipe in the drain hole comprises: one end of the soft permeable pipe is wrapped on the guide cap; penetrating the soft water permeable pipe and the guide cap into the guide pipe in the drainage hole together; after penetrating, a pushing piece is inserted into the guide pipe, and the guide cap is pushed to one end, far away from the drainage ditch, of the drainage hole.
In one embodiment, the step of forming the drain hole in the inner wall of the drain comprises: the drainage holes are distributed on the inner wall of the drainage ditch at intervals along the horizontal direction, and the distance between two adjacent drainage holes is determined according to the following formula:
L＝H/I0
in the formula: i is0The average gradient of the falling curve of water in the soil body is shown; k is the permeability coefficient of the soil body; h is the preset water level for reducing the water in the soil body.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a first flow chart of a roadbed disease treatment method in one embodiment;
FIG. 2 is a flow chart of a roadbed disease treatment method in one embodiment;
fig. 3 is a flow chart of a roadbed disease treatment method according to an embodiment;
FIG. 4 is a fourth flowchart of a roadbed disease control method in one embodiment;
FIG. 5 is a flow chart of a roadbed disease treatment method according to an embodiment;
fig. 6 is a flow chart of a roadbed disease treatment method according to an embodiment.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In one embodiment, referring to fig. 1, a method for treating a roadbed disease includes the following steps:
s10, drilling holes on the roadbed to form pile holes;
s20, after drilling, filling the filler into the pile hole, and performing tamping operation to form a compaction pile;
s30, arranging drainage ditches on the soil body along at least one side of the roadbed;
and S40, forming a drain hole on the inner wall of the drainage ditch, so that one end of the drain hole extends to the lower part of the roadbed, wherein the drain hole is obliquely arranged in the soil body, and one end, far away from the drainage ditch, of the drain hole is higher than one end, close to the drainage ditch, of the drain hole.
The roadbed disease treatment method comprehensively utilizes the process of the compaction piles and the drainage ditches. When the pile is compacted, firstly, a hole is formed on the roadbed to form a pile hole with the required specification; and filling the filler into the pile hole, and performing tamping operation to form the compaction pile in the roadbed. At the moment, the compaction piles and the roadbed form a composite foundation together, so that the bearing capacity of the roadbed is improved, the settlement amount is reduced, the wet limit or liquefaction of the roadbed is eliminated, and the diseases such as slurry turning, mud pumping and the like of the roadbed in the traffic process are effectively treated. Meanwhile, in the drainage ditch construction process, drainage ditches are arranged on one side of the roadbed or the two opposite sides of the roadbed; and then, the inner wall of the drainage ditch is provided with a drainage hole, so that one end of the drainage hole extends to the lower part of the roadbed, and the water stored in the roadbed can permeate into the drainage hole conveniently. Because the wash port sets up in the soil body slope, just the wash port is kept away from the one end in escape canal is higher than the wash port is close to the one end in escape canal, consequently, converge in the hydroenergy in the wash port in time arrange the escape canal for water content in the road bed reduces to under the frost heaving water content fast, effectively solves the frost heaving disease of road bed. In addition, compared with other treatment measures, the mode of combining the compaction piles with the drainage ditch does not need to seal the line, has no influence on normal operation and production, and ensures normal passing of a railway construction interval on the premise of effectively solving the problems of frost heaving, slurry turning, mud pumping and the like of the line.
The drainage ditch may be provided only on one side of the roadbed or may be provided on opposite sides of the roadbed. Meanwhile, the length and depth of the drainage ditch may be determined according to the local roadbed moisture content and the local soil property of the soil body.
Specifically, drainage ditches are arranged on two opposite sides of the roadbed. Meanwhile, the total length of the drainage ditch is 252m, and the elevation of the drainage ditch is 80cm below the top surface of the steel rail of the lower track.
It should also be noted that the placement of the drain holes on the drain may depend on the local freezing depth. Taking the large standard railway as an example, the maximum freezing depth of the large standard railway is between 1.4m and 1.9m, and the depth of the drainage hole in the drainage ditch is 2/3 of the maximum freezing depth. When the roadbed height and the water content of the soil body are higher and the aquifer is thicker, at least two rows of drain holes can be arranged on the inner wall of the drainage ditch. In addition, when a plurality of drain holes are arranged, the hydraulic slope in the soil body can be directly influenced by the size of the distance between the drain holes in the horizontal direction, so that the reasonable control of the distance between the drain holes plays an important role in the underground hydraulic slope. Wherein, the hydraulic gradient is hydraulic gradient, also called hydraulic gradient, which refers to the ratio of head loss along the permeation path to the length of the permeation path; it is understood that the mechanical energy lost to the water flow through the osmotic path per unit length to overcome frictional resistance.
Specifically, the distance between two adjacent drain holes is determined according to the following formula:
L＝H/I0
in the formula: i is0For the falling curve of water in the soil bodyThe gradient is equalized; k is the permeability coefficient of the soil body; h is the preset water level for reducing the water in the soil body. Therefore, the distance between the drain holes is effectively controlled through the calculation formula, the underground hydraulic slope effect is favorably improved, and the water passing capacity in the drain holes is improved. Taking a large standard railway as an example, the distance between the orifice of the drain hole and the top of the drainage ditch is 0.5m, and the distance between the drain hole and the drain hole is 2 m. Meanwhile, the inclination angle of the drain hole is 5 degrees, and the aperture of the drain hole is 110 mm.
Further, referring to fig. 2, S20, the step of filling the filler into the pile hole and performing the tamping operation includes:
s21, tamping the bottom of the pile hole;
and S22, filling the lime-soil fillers with preset proportion into the pile holes layer by layer, and tamping the fillers filled layer by layer each time to form the compacted pile to a preset height.
Therefore, before filling, the bottom of the pile hole needs to be tamped, and the bottom of the compacted pile is guaranteed to have enough supporting force. After tamping, filling the lime-soil filler with a preset proportion into the pile hole layer by layer, and tamping while filling to ensure that the formed compaction pile has stable structural strength. Meanwhile, the layered tamping and filling operation can better compact the roadbed, so that the solidification effect of the roadbed is effectively improved, and the bearing capacity of the roadbed is further improved.
Specifically, the preset ratio is 3:7 (volume ratio), the aperture of the pile hole is 150mm, and the aperture of the pile hole after tamping is not less than 300 mm. Meanwhile, after the tamping and filling operation is finished, the soil compaction coefficient between the compaction piles is not less than 0.90, and the average compaction coefficient of the compaction piles is not less than 0.96.
It should be noted that before filling the pile hole with the filler, the surface of the construction site needs to be cleaned to remove weeds, tree roots and humus in the construction site, and after the site is leveled, a small amount of sand is spread for positioning the pile hole and the pile driver. Meanwhile, the filled lime soil filler is sieved before being mixed, so that the grain size of the lime soil filler is ensured not to exceed 15 mm. In addition, before the filler is filled, the maximum dry density and the optimal water content of the roadbed are obtained through a compaction test, and the water content of the filler is controlled within +/-3% of the optimal water content during construction. In addition, in the process of compacting the lime-soil filler, the deformation conditions of the ground and the track are observed, and the tamping is immediately stopped when an abnormality is found, so that the driving safety is ensured. In the construction process, the side-standing supervision of the quality of hole forming and backfill tamping needs to be carried out by professional supervision. If the foundation soil quality is found to be inconsistent with the design data, stopping construction immediately, and constructing after finding out reasons or taking effective reinforcement measures. If the lime-soil compaction pile is constructed in rainy seasons and winter, rain-proof or anti-freezing measures must be taken to prevent the lime-soil and soil materials from being wetted or frozen by rainwater.
It should be noted that the construction sequence of the compaction pile is generally along straight line and interlaced jump driving, after the construction is finished, a soil cushion layer can be laid after the inspection is qualified, and the compaction is carried out by a heavy vibration road roller. And simultaneously, after the compaction pile is constructed, detecting the bearing capacity of the composite foundation at intervals of about 4 days, compacting loose pile heads when the detected composite bearing capacity of the foundation meets the design requirement, and then paving a soil cushion layer on the ground at the upper part of the pile top to diffuse stress and drain water. Wherein, the soil cushion can be a lime soil cushion or a sand gravel soil cushion.
In one embodiment, referring to fig. 3, S20, after the step of filling the pile hole with the filler and performing the tamping operation, the method further includes:
s50, excavating the part of the compaction pile, which exceeds the roadbed surface;
s60, after digging, paving a soil cushion layer on the top of the compaction pile;
and S70, tamping the soil cushion layer after paving.
After the filling is finished, excavating the exposed pile head; after the excavation, a soil cushion layer is laid on the top of the compaction pile, and the soil cushion layer is tamped, so that the compaction degree of the compaction pile is better, the structural strength of the roadbed is improved, and the diseases such as roadbed sinking, slurry pumping and mud pumping are further avoided.
Further, referring to fig. 3, after the step of tamping the soil mat, S70 further includes:
s71, sealing the pile hole with clay on the soil cushion layer to form a sealing layer;
and S72, compacting the sealing layer, and controlling the sealing layer to be higher than the roadbed surface.
Therefore, after the construction of the compaction pile is completed, the opening of the pile hole needs to be sealed, and the compaction pile is guaranteed to be integrally tamped. During the operation of sealing, the sealing layer needs to be higher than the roadbed surface, so that ground water is effectively prevented from permeating into the pile top during the implantation of the compaction pile, and the reduction of the strength of the pile body is effectively avoided.
In one embodiment, referring to fig. 4, S10, drilling a hole in the roadbed, and the step of forming the pile hole includes:
s11, forming a plurality of pile holes at intervals on the top of the roadbed, and controlling the distance between every two adjacent pile holes to be 0.5-1.0 m;
and S12, forming a plurality of pile holes on any side surface of the roadbed, controlling the distance between the pile holes in the horizontal direction to be 0.2-0.6 m, and controlling the distance between the pile holes in the vertical direction to be 0.6-1.0 m.
Therefore, in the drilling process, holes are respectively formed in the top and the side of the roadbed, so that the top and the side of the roadbed can be subjected to compaction pile operation, and the overall structure of the roadbed is effectively improved. Simultaneously, the pile hole interval on the top of road bed and the side sets up according to different scopes, guarantees that the whole closely knit degree of road bed obtains the maximize and promotes.
Specifically, the pile-hole spacing at the top of the roadbed is 0.8 m; the transverse spacing (in the horizontal direction) of pile holes on the side face of the roadbed is 0.4 m; the longitudinal distance (in the vertical direction) between pile holes is 0.8 m.
It should be noted that, in the drilling process, 2 to 3 pile holes are processed on the roadbed from outside to inside. Meanwhile, the pile hole is kept in a basically vertical state, and the verticality deviation is not more than 1.5 percent; in addition, the deviation of the central point of the pile hole is ensured not to exceed 5% of the designed pile distance.
In addition, a compaction pile is arranged on the road shoulder close to the ballast slope toe, and the diameter of the compaction pile can be 15 cm; the distance between the compaction piles is 33 cm. Meanwhile, the intersection angles of the compaction piles and the vertical direction can be 15 degrees and 45 degrees respectively.
In an embodiment, referring to fig. 5, after the step of opening a drainage ditch on the soil body along at least one side of the roadbed at S30, the method further includes:
and S31, forming a blind ditch on the drainage ditch, communicating the blind ditch with the hidden culvert, and thus, stably discharging the water in the drainage ditch into the hidden culvert through the blind ditch.
In an embodiment, referring to fig. 5, after the step of opening a drainage ditch on the soil body along at least one side of the roadbed at S30, the method further includes:
s32 the road bed orientation set up on the side of escape canal and lead to escape aperture in the escape canal, through the escape aperture, in time with the water drainage in the road bed in the escape canal, reduce the water content in the road bed, effectively avoid the road bed to take place diseases such as frost heaving.
In one embodiment, referring to fig. 1, the steps further include:
and S80, installing a soft water-permeable pipe in the drainage hole, and paving the soft water-permeable pipe along the length direction of the drainage hole.
Therefore, the soft water permeable pipe is arranged in the drainage hole, and the aim is as follows: the water in the roadbed is removed through air drying or runoff, and the frost heaving amount of the roadbed is reduced. Meanwhile, the soft permeable pipe not only blocks the upward migration of the moisture at the lower part of the roadbed, but also plays a role in ventilation. In addition, some water at the lower part of the roadbed can be taken away. In addition, in the use, soft formula pipe of permeating water freezes earlier than other positions of road bed, forms and freezes the frontal surface, consequently, road bed upper portion moisture can move here, and the frost heaving of production is because of the elasticity that soft formula pipe of permeating water itself has for frost heaving is towards horizontal development, can not influence the smoothness of circuit.
Further, referring to fig. 6, S80, the step of installing the water permeable hose into the drainage hole includes:
s81, wrapping one end of the flexible permeable pipe on the guide cap;
s82, the soft water permeable pipe and the guide cap are inserted into the guide pipe in the drainage hole together;
s83, after penetrating, inserting a pushing piece into the guide pipe, pushing the guide cap to one end of the drain hole far away from the drain ditch, and thus, smoothly installing the flexible permeable pipe into the drain hole. Meanwhile, the soft permeable pipe is ensured to be more straight, and the drainage is more smooth.
In one embodiment, in the process of forming the drainage hole, a special fiber sleeve is sleeved on the down-the-hole drill, the anchor rod and the fiber sleeve are firmly connected, a drill bit is sleeved at the front end of the first section of the anchor rod, the length of the anchor rod is determined according to geological conditions, and the anchor rod is spliced on site. After the first anchor rod is drilled, the tail part of the front anchor rod is sleeved with the connecting sleeve coated with the lubricant and then connected with the rear anchor rod until the required length is reached.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Claims (10)
1. A roadbed disease treatment method is characterized by comprising the following steps:
drilling a hole on the roadbed to form a pile hole;
after drilling, filling filler into the pile hole, and performing tamping operation to form a compacted pile;
arranging a drainage ditch on the soil body along at least one side of the roadbed;
and a drain hole is formed in the inner wall of the drainage ditch, so that one end of the drain hole extends to the lower part of the roadbed, wherein the drain hole is obliquely arranged in the soil body, and one end, far away from the drainage ditch, of the drain hole is higher than one end, close to the drainage ditch, of the drain hole.
2. The roadbed disease control method of claim 1, wherein the step of filling the pile hole with the filler and performing the tamping operation includes:
tamping the bottom of the pile hole;
filling the lime-soil filler with a preset proportion into the pile hole layer by layer, and tamping the filler filled layer by layer each time to form the compaction pile to a preset height.
3. The roadbed disease control method as claimed in claim 1, wherein after the step of filling the pile hole with the filler and performing the tamping operation, the roadbed disease control method further comprises:
excavating the part of the compaction pile, which exceeds the roadbed surface;
after digging, paving a soil cushion layer on the top of the compaction pile;
and after paving, tamping the soil cushion layer.
4. The roadbed disease control method according to claim 3, wherein the step of compacting the soil cushion layer further comprises:
sealing the pile hole with clay on the soil cushion layer to form a sealing layer;
and compacting the sealing layer, and controlling the sealing layer to be higher than the roadbed surface.
5. The roadbed disease control method of claim 1, wherein the step of drilling holes in the roadbed to form pile holes comprises:
arranging a plurality of pile holes at intervals on the top of the roadbed, and controlling the distance between every two adjacent pile holes to be 0.5-1.0 m;
and arranging a plurality of pile holes on any side surface of the roadbed, controlling the distance between the pile holes in the horizontal direction to be 0.2-0.6 m, and controlling the distance between the pile holes in the vertical direction to be 0.6-1.0 m.
6. The method for treating a roadbed disease according to claim 1, wherein after the step of forming a drainage ditch along at least one side of the roadbed on the soil body, the method further comprises:
and arranging blind ditches on the drainage ditch, and communicating the blind ditches with the hidden culverts.
7. The method for treating a roadbed disease according to claim 1, wherein after the step of forming a drainage ditch along at least one side of the roadbed on the soil body, the method further comprises:
and a drainage hole leading to the drainage ditch is formed in one side surface of the roadbed facing the drainage ditch.
8. The roadbed disease control method according to any one of claims 1 to 7, wherein the steps further include:
and installing a soft water permeable pipe in the drainage hole, so that the soft water permeable pipe is laid along the length direction of the drainage hole.
9. The roadbed disease control method according to claim 8, wherein the step of installing a water permeable hose into the drainage hole includes:
one end of the soft permeable pipe is wrapped on the guide cap;
penetrating the soft water permeable pipe and the guide cap into the guide pipe in the drainage hole together;
after penetrating, a pushing piece is inserted into the guide pipe, and the guide cap is pushed to one end, far away from the drainage ditch, of the drainage hole.
10. The roadbed disease control method as claimed in any one of claims 1 to 7, wherein the drainage holes are plural, the plurality of drainage holes are distributed on the inner wall of the drainage ditch at intervals along the horizontal direction, and the distance between two adjacent drainage holes is determined according to the following formula:
L＝H/I0
in the formula: i is0The average gradient of the falling curve of water in the soil body is shown; k is the permeability coefficient of the soil body; h is the preset water level for reducing the water in the soil body.
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Cited By (1)
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| CN115369855A (en) * | 2022-09-21 | 2022-11-22 | 武汉南方旭域科技工程有限公司 | Soft soil roadbed construction method |
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