Filling road section karst excavation filling method treatment structure

Abstract

The utility model provides a filling road section karst excavation filling method treatment structure which comprises a stacking building layer arranged on the periphery of the interior of a karst cave, a filling layer is arranged in a space defined by the stacking building layer, a buffer layer is arranged on the top of the filling layer, a supporting layer is arranged on the top of the buffer layer, a stabilizing layer is arranged on the top of the supporting layer, and the stabilizing layer is arranged on the top of the supporting layer. An isolation layer is arranged at the top of the stable layer; the filling layer is a rubble filling layer, and the stacking layer is a rubble stacking layer; the stability of the peripheral edge of the karst cave can be improved through the stacking and building layers formed by stacking and building the rubbles, then the rubbles are filled in the space defined by the stacking and building layers, the stroke filling layer is pressed, and the rubbles in the filling layer have the embedding and extruding effect, so that the karst cave has good bearing capacity; a gap in the top of the filling layer can be filled with the buffer layer, the supporting and damping effects are achieved, the stable layer of the integrated structure can disperse and bear loads, the stability of roadbed supporting is guaranteed, collapse is prevented, and driving safety is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of filling road section karst treatment technology, and specifically relates to a filling road section karst excavation and filling method treatment structure. BACKGROUND

[0002] In karst areas, the roadbed can be threatened by karst caves, which can seriously affect the stability of the roadbed, leading to road surface cracking, collapse or damage, in order to ensure the stability of the roadbed, the karst cave needs to be treated to ensure the safe traffic of the highway. At present, the treatment method for the karst cave collapse funnel, sinkhole and shallow buried karst cave is to use mixed stone and clay for backfilling, which has poor integrity and uneven backfilling, which can easily cause local collapse and affect the stability of the roadbed.

[0003] Therefore, the filling road section karst excavation and filling method treatment structure provided by the present application is easy to construct, can ensure the stability of the roadbed support and driving safety to solve the technical problems existing in the prior art. SUMMARY

[0004] In view of the deficiencies in the prior art, the utility model provides a filling road section karst excavation and filling method treatment structure which is easy to construct, can ensure the stability of the roadbed support and driving safety.

[0005] The technical scheme of the utility model is as follows: a filling road section karst excavation and filling method treatment structure, which comprises a bricklaying layer arranged around the inside of the karst cave, a filling layer arranged in the space enclosed by the bricklaying layer, a buffer layer arranged on the top of the filling layer, a support layer arranged on the top of the buffer layer, a stable layer arranged on the top of the support layer and an isolation layer arranged on the top of the stable layer; the filling layer is a stone filling layer, and the bricklaying layer is a stone bricklaying layer.

[0006] The buffer layer is a graded gravel layer with a thickness of 20-50cm.

[0007] The stable layer is a foamed concrete layer with a thickness of 10-30cm.

[0008] The foamed concrete layer is internally provided with a steel wire mesh along the horizontal direction.

[0009] The mesh size of the steel wire mesh is 10*10cm, and the steel wire diameter of the steel wire mesh is not less than 3mm.

[0010] The support layer is a natural sand and gravel layer with a thickness of 20-50cm.

[0011] The isolation layer is a geotextile laid on the top of the stable layer.

[0012] The utility model has the advantages of easy construction, stable support for the roadbed and driving safety.

[0013] (1) in the utility model, the piece stone is filled in the space enclosed by the packing layer, and the piece stone in the filling layer is compacted, the embedding and extruding of the piece stone in the filling layer make the filling layer have good bearing capacity;

[0014] (2) the buffer layer can fill the gap on the top of the filling layer, and has the functions of supporting and damping, the stable layer of the integral structure can disperse and bear the load, ensures the stability of the roadbed support, prevents collapse, ensures driving safety, and is easy to construct. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic view of the karst excavation and filling method treatment structure in the utility model. DETAILED DESCRIPTION

[0016] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. The application can be implemented in any of numerous ways, not just the examples mentioned herein. The examples are provided so that this application will be thorough and complete, and will fully convey the scope of the application to those skilled in the art. It should be noted that the relative arrangement of the components and steps illustrated in these examples, the components of the materials, the numerical expressions, and the values are to be interpreted as merely illustrative, and not as a limitation, unless otherwise specifically stated.

[0017] The "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different parts. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] As Figure 1As shown, the karst excavation and filling method treatment structure of the fill section includes the block layer 2 arranged around the inside of the karst cave 1, the space enclosed by the block layer 2 is internally provided with the filling layer 3, the top of the filling layer 3 is provided with the buffer layer 4, the top of the buffer layer 4 is provided with the support layer 5, the top of the support layer 5 is provided with the stable layer 6, and the top of the stable layer 6 is provided with the isolation layer 7; the filling layer 3 is a stone filling layer, the stone filling layer is filled with stones and compacted, and the block layer 2 is a stone block layer, which is formed by block layering with stones; in this embodiment, the block layer 2 formed by block layering with stones can improve the stability of the edges around the karst cave, and then the stones are filled in the space enclosed by the block layer 2 and compacted to form the filling layer 3, the stones in the filling layer 3 have good bearing capacity due to the embedding and extruding effect; the buffer layer 4 can fill the gaps at the top of the filling layer 3 and play a supporting and shock-absorbing role, the stable layer 6 of the integrated structure can disperse and bear the load, ensure the stability of the roadbed support, prevent collapse, ensure driving safety, and is easy to construct.

[0019] In some embodiments, the buffer layer 4 is a graded gravel layer with a thickness of 20-50 cm, which is formed by paving graded gravel, and can fill the gaps at the top of the filling layer 3, effectively bear the pressure from the upper side, and disperse the load to a wider area through its good particle size distribution, thereby reducing the direct pressure on the lower layer; specifically, the buffer layer 4 is a graded gravel layer with a thickness of 30 cm.

[0020] In some embodiments, the stable layer 6 is a foamed concrete layer with a thickness of 10-30 cm, which is formed by pouring foamed concrete, can disperse and bear the load, ensure the stability of the roadbed support, prevent collapse, and ensure driving safety; specifically, the stable layer 6 is a foamed concrete layer with a thickness of 30 cm.

[0021] In some embodiments, the foamed concrete layer is internally provided with a steel mesh in the horizontal direction, which can improve the strength and stability of the stable layer 6, enhance its tensile strength, and prevent cracks in the stable layer 6; more specifically, the mesh size of the steel mesh is 10x10 cm, and the steel wire diameter of the steel mesh is not less than 3 mm.

[0022] In some embodiments, the support layer 5 is a natural sand and gravel layer with a thickness of 20-50 cm, which is formed by laying a dense structure of natural sand and gravel, can disperse the load, and improve the stability and strength of the support; specifically, the support layer 5 is a natural sand and gravel layer with a thickness of 30 cm.

[0023] In some embodiments, the isolation layer 7 is a geotextile laid on top of the stabilizing layer, the geotextile having a breaking strength ≥12.5KN / m, a CBR top breaking strength ≥2.1KN, a vertical permeability coefficient ≥0.3cm / s, a tearing strength ≥0.33kn, and a width ≥6.0m, and the geotextile is connected by stitching between the widths, and the overlapping length is not less than 30cm; the geotextile is laid without wrinkles, and the surface is flat, and hard protrusions such as stones are strictly prohibited.

[0024] So far, the various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0025] The above-described embodiments only express some of the embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A karst excavation and filling treatment structure for a fill road section, characterized by: The invention comprises a masonry layer arranged around the interior of the cave, a filling layer is arranged inside the space enclosed by the masonry layer, a buffer layer is arranged on the top of the filling layer, a support layer is arranged on the top of the buffer layer, a stabilization layer is arranged on the top of the support layer, and an isolation layer is arranged on the top of the stabilization layer; The filling layer is a flaky stone filling layer, and the masonry layer is a flaky stone masonry layer.

2. The karst excavation and filling treatment structure for fill road sections according to claim 1 is characterized by: The buffer layer is a graded crushed stone layer with a thickness of 20 to 50 cm.

3. The karst excavation and filling treatment structure for fill road sections according to claim 1 is characterized in that: The stabilizing layer is a foam concrete layer with a thickness of 10 to 30 cm.

4. The karst excavation and filling treatment structure for fill road sections according to claim 3 is characterized by: A steel wire mesh is arranged horizontally inside the foam concrete layer.

5. The karst excavation and filling treatment structure for fill road sections according to claim 4 is characterized in that: The mesh size of the steel mesh is 10×10 cm, and the diameter of the steel wire of the steel mesh is not less than 3 mm.

6. The karst excavation and filling treatment structure for fill road sections according to claim 1 is characterized in that: The support layer is a natural gravel layer with a thickness of 20 to 50 cm.

7. The karst excavation and filling treatment structure for fill road sections according to claim 1 is characterized by: The isolation layer is a geotextile laid on top of the stabilization layer.

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