Stabilizing device for preventing freeze-thaw cycle

Abstract

The utility model provides a stabilizing device for preventing freeze-thaw cycle, which comprises a plurality of anchor heads, a heat preservation structure, anchor rods and drain holes, the drain holes are arranged at the bottom end of the free surface of a mountain and are positioned on the same horizontal plane with the step surface of the mountain, the anchor rods are obliquely arranged in the mountain, and the heat preservation structure is arranged on the anchor rods. The heat preservation structure is laid on the surface of the mountain body provided with the anchor rods, the anchor rods are matched with the anchor heads, the mountain body of the mine pit is consolidated, the heat preservation structure is fixed to the mountain body of the mine pit through the anchor heads, heat preservation is conducted on the mountain body of the mine pit, frozen soil development in the alpine region is weakened, and then the thickness of a frozen soil layer of seasonal frozen soil is reduced; frost on the side slope melts when the temperature rises in the daytime, water permeating into the side slope after the frost melts is reduced, a plurality of drainage holes are formed in the bottom end of the free face of the mountain body, redundant water in the mountain body can be drained, and freeze-thaw damage of rock mass is reduced.

Description

Technical Field

[0001] The utility model relates to a stabilizing device for preventing freeze-thaw cycles, belonging to the technical field of freeze-thaw protection. Background Art

[0002] The Duobaoshan open-pit mining area is a high-altitude and cold region with well-developed permafrost, which is mainly divided into two types: seasonal permafrost and permafrost. The depth of seasonal permafrost is generally 1.5 to 2.5 meters, and the freezing period is from mid-September to late May of the following year. There are also island-like permafrost distributions in valleys and shady slopes, and the thickness of the permafrost layer is generally 2 to 7 meters.

[0003] During the freezing period, rock mass engineering projects face freeze-thaw damage to jointed rock masses. One of the main manifestations of freeze-thaw damage to jointed rock masses is frost heave damage during the freeze-thaw cycle. This freeze-thaw process generates significant frost heave forces within the rock joints, leading to joint expansion and cracking, pore structure destruction, and degradation of mechanical properties such as mechanical strength and elastic modulus. Furthermore, the freezing period is characterized by large temperature differences between day and night, significantly impacting the safety and stability of slopes. As daytime temperatures rise, frost on the slopes melts, and the melted water seeps into the slopes. This water, after melting on the slopes and forming a freezing cycle, can disrupt the slope's stability, causing landslides or collapses.

[0004] Therefore, the present invention provides a stabilization device to prevent freeze-thaw cycles. Utility Model Content

[0005] In view of this, an object of the present invention is to provide a stabilizing device for preventing freeze-thaw cycles.

[0006] The utility model is achieved in this way:

[0007] A stabilization device for preventing freeze-thaw cycles includes several anchor heads, an insulation structure, anchor rods, and drainage holes. The drainage holes are in a certain number and are opened at the bottom end of the free surface of the mountain and are on the same horizontal plane as the stepped surface of the mountain. The anchor rods are arranged obliquely in the mountain. The insulation structure is laid on the surface of the mountain where the anchor rods are arranged. The anchor heads penetrate the insulation structure and are connected to the anchor rods. The several anchor heads and anchor rods constitute a mesh slope protection structure.

[0008] As a further improvement, the anchor rod is a steel bar or a columnar body formed by winding two or more steel bars.

[0009] As a further improvement, the anchor head includes an anchor bolt and a conversion head, the conversion head is sleeved on the free end of the anchor rod exposed on the mountain, and the anchor bolt and the conversion head cooperate with each other.

[0010] As a further improvement, the conversion head includes a main body, a mounting port, and an expansion strip. Mounting ports are opened on the end faces of both ends of the first end of the main body. Several expansion strips are arranged on the end face of one mounting port of the main body. The expansion strips are distributed at equal distances around the center of the mounting port.

[0011] As a further improvement, a barb is provided at the end of the expansion strip.

[0012] As a further improvement, the anchor bolt comprises a horizontal portion and a vertical portion, the vertical portion is vertically fixed at the center of the horizontal portion, and the cross-sectional shape of the horizontal portion is trapezoidal.

[0013] As a further improvement, the horizontal width L3 of the horizontal portion is ~ times the horizontal width L2 of the vertical portion.

[0014] As a further improvement, the thermal insulation structure is composed of a first film layer, a thermal insulation layer, and a second film layer, and the thermal insulation layer is wrapped in the middle by the first film layer and the second film layer.

[0015] The beneficial effects of the utility model are:

[0016] ① The utility model cooperates with the anchor rod and the anchor head to consolidate the mountain of the mine pit, and fixes the insulation structure to the mountain of the mine pit through the anchor head, thereby insulating the mountain of the mine pit, reducing the development of permafrost in high-altitude cold areas, and further reducing the thickness of the permafrost layer of seasonal permafrost. The temperature rise during the day will cause the frost on the slope to melt, and the water that penetrates into the slope after melting will be reduced. A number of drainage holes are opened at the bottom of the free surface of the mountain to discharge excess water in the mountain, thereby reducing the freeze-thaw damage of the rock mass and ultimately stabilizing the slope.

[0017] ② The first film layer and the second film layer of the utility model are made of plastic and have good waterproof performance. If frost forms on the outer surface of the insulation structure or the moisture in the mountain itself is frozen and then melted, the melted moisture cannot penetrate the first film layer and the second film layer, and then wet the insulation layer, thereby avoiding the problem that the insulation layer needs to be dried before use after it gets wet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the installation of a stabilization device for preventing freeze-thaw cycles provided by an embodiment of the utility model.

[0020] Figure 2 The utility model is a schematic diagram of the anchor head and anchor rod structure of a stabilization device for preventing freeze-thaw cycles provided by an embodiment of the present invention.

[0021] Figure 3 It is a partial structural schematic diagram of an anchor head of a stabilizing device for preventing freeze-thaw cycles provided by an embodiment of the utility model.

[0022] Figure 4 The utility model is a schematic diagram of the heat preservation structure of a stabilization device for preventing freeze-thaw cycles provided in an embodiment. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically specified.

[0025] Reference Figures 1-4 As shown, this embodiment provides a specific implementation method for a stabilization device for preventing freeze-thaw cycles, including a plurality of anchor heads 10, an insulation structure 20, an anchor rod 30, and a drainage hole 40. The drainage holes 40 are in a plurality of numbers and are opened at the bottom end of the free surface of the mountain and are at the same horizontal plane as the step surface of the mountain. The anchor rod 30 is arranged obliquely in the mountain, and the insulation structure 20 is laid on the surface of the mountain where the anchor rod 30 is arranged. The mountain surface described here includes a free surface and a step surface. The anchor head 10 passes through the insulation structure 20 and is connected to the anchor rod 30. A plurality of anchor heads 10 and anchor rods 30 constitute a mesh slope protection structure.

[0026] When setting the anchor rod 30 , it is necessary to use a drilling machine to open a hole on the mountain of the mine in advance, so as to facilitate the subsequent burying of the anchor rod 30 in the hole.

[0027] The utility model cooperates with the anchor rod 30 and the anchor head 10 to consolidate the mountain of the mine pit and fix the insulation structure to the mountain of the mine pit through the anchor head 10, thereby insulating the mountain of the mine pit, reducing the development of permafrost in high-altitude cold areas, and further reducing the thickness of the permafrost layer of seasonal permafrost. The temperature rise during the day will cause the frost on the slope to melt, and the water that penetrates into the slope after melting will be reduced. A number of drainage holes 40 are opened at the bottom of the free surface of the mountain to discharge excess water in the mountain, thereby reducing the freeze-thaw damage to the rock mass.

[0028] The anchor rod 30 is a steel bar or a columnar body formed by winding two or more steel bars. It is easy to process on site and can be reused. Anchor rods made of concrete are not used, or concrete is poured and fixed next to the anchor rod 30 to reduce the problem of concrete curing.

[0029] In one specific embodiment, the length L1 of the anchor rod 30 is between 30 cm and 1 m, which penetrates deep into the rock and will not easily break away from the mine rock, nor will it cause difficulty in drilling operations or cause secondary collapse of the mine.

[0030] The anchor head 10 includes an anchor bolt 101 and a conversion head 102. The conversion head 102 is mounted on the free end of the anchor rod 30 exposed on the mountain. The anchor bolt 101 and the conversion head 102 cooperate with each other to fix the insulation structure on the mountain surface to achieve insulation and waterproof functions.

[0031] Furthermore, the conversion head 102 includes a main body 121, a mounting port 122, and an expansion strip 123. The main body 121 has mounting ports 122 on its end faces at both ends. Several expansion strips 123 are arranged on the end face of one mounting port 122 of the main body 121. The expansion strips 123 are distributed at equal distances around the center of the mounting port 122.

[0032] Furthermore, a barb is provided at the end of the expansion strip 123 .

[0033] During use, the barb of the expansion strip 123 provided inside the conversion head 102 will be embedded between two adjacent protrusions of the anchor rod 30, thereby increasing the friction between the two and achieving a secure assembly.

[0034] The anchor bolt 101 comprises a horizontal portion 111 and a vertical portion 112. The vertical portion 112 is vertically fixed at the center of the horizontal portion 111, and the cross-sectional shape of the horizontal portion 111 is a trapezoid. The vertical portion 112 is a cone with threads engraved on the surface, which can directly pass through the insulation structure and be fixed to the anchor rod.

[0035] Furthermore, the horizontal width L3 of the horizontal portion 111 is 2 to 5 times the horizontal width L2 of the vertical portion 112 , thereby increasing the contact area and facilitating the fixing of a low-density and sparsely structured insulation layer, such as a straw bag.

[0036] The thermal insulation structure 20 is composed of a first film layer 201, a thermal insulation layer 202, and a second film layer 203. The thermal insulation layer 202 is wrapped in the middle by the first film layer 201 and the second film layer 203 to insulate the mountain of the mine and reduce the impact of freezing and thawing.

[0037] The first film layer 201 and the second film layer 203 are made of plastic and have good waterproof performance. If frost forms on the outer surface of the insulation structure or the moisture in the mountain itself is frozen and then melted, the melted moisture cannot penetrate the first film layer 201 and the second film layer 203, and then wet the insulation layer, thereby avoiding the problem of the insulation layer getting wet and then needing to be dried before use.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A stabilization device for preventing freeze-thaw cycles, characterized in that: The invention comprises a plurality of anchor heads (10), a heat-insulating structure (20), an anchor rod (30), and a drainage hole (40). The drainage holes (40) are provided in a plurality and are opened at the bottom end of the free surface of the mountain and are on the same horizontal plane as the step surface of the mountain. The anchor rod (30) is obliquely arranged in the mountain. The heat-insulating structure (20) is laid on the surface of the mountain where the anchor rod (30) is arranged. The anchor head (10) passes through the heat-insulating structure (20) and is connected to the anchor rod (30). The plurality of anchor heads (10) and the anchor rod (30) constitute a mesh slope protection structure.

2. The freeze-thaw cycle stabilization device according to claim 1, characterized in that: The anchor rod (30) is a steel bar or a columnar body formed by winding two or more steel bars.

3. The freeze-thaw cycle stabilization device according to claim 1, characterized in that: The anchor head (10) comprises an anchor bolt (101) and a conversion head (102). The conversion head (102) is sleeved on the free end of the anchor rod (30) exposed on the mountain. The anchor bolt (101) and the conversion head (102) cooperate with each other.

4. The freeze-thaw cycle stabilization device according to claim 3, characterized in that: The conversion head (102) comprises a main body (121), a mounting opening (122), and an expansion strip (123). The main body (121) is provided with mounting openings (122) on both end faces at the first end. A plurality of expansion strips (123) are provided on the end face of one mounting opening (122) of the main body (121). The expansion strips (123) are distributed at equal distances around the center of the mounting opening (122).

5. The freeze-thaw cycle stabilization device according to claim 4, characterized in that: The end of the expansion strip (123) is provided with a barb.

6. The freeze-thaw cycle stabilization device according to claim 3, characterized in that: The anchor bolt (101) comprises a horizontal portion (111) and a vertical portion (112), wherein the vertical portion (112) is vertically fixed at the center of the horizontal portion (111), and the cross-sectional shape of the horizontal portion (111) is a trapezoid.

7. The freeze-thaw cycle stabilization device according to claim 6, characterized in that: The horizontal width L3 of the horizontal portion (111) is 2 to 5 times the horizontal width L2 of the vertical portion (112).

8. The freeze-thaw cycle stabilization device according to claim 1, characterized in that: The thermal insulation structure (20) is composed of a first film layer (201), a thermal insulation layer (202), and a second film layer (203), and the thermal insulation layer (202) is wrapped in the middle by the first film layer (201) and the second film layer (203).

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