Grouting device for high-water filling material
By designing the grouting carrier and auxiliary mechanism of the grouting device, the problem of low grouting efficiency of high-water filling materials in downhole tunnels is solved, rapid mixing and precise grouting are achieved, and downhole construction efficiency and safety are improved.
Patent Information
- Application Number
- CN202510569672.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-04
- Publication Date
- 2025-08-15
AI Technical Summary
When grouting with high water filling materials in underground tunnels, due to the size of the equipment and the high temperature and high humidity environment of the underground tunnel, the materials are rapidly hydrated and complex rock structures, resulting in low grouting efficiency and safety hazards.
A grouting device for high water filling materials is designed, including a grouting carrier, a double-pass access body, a mixed fan, a sealing mechanism and an auxiliary mechanism. By quickly mixing materials A and B and achieving hole sealing and precise grouting during the grouting process, it adapts to complex crack structures.
It realizes rapid mixing and grouting in downhole tunnels, improves grouting efficiency, reduces slurry leakage and safety hazards, and shortens construction time.
Smart Images
Figure CN120487227A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of coal mine tunnel construction, and more particularly to a grouting device for high-water filling materials. Background Art
[0002] As shallow coal resources in my country become increasingly depleted, deep mining has become a major trend. Traditional methods for treating goaf areas include gangue filling and paste filling, but these methods suffer from the long period of strength development. Therefore, high-water filling materials (moisture content ≥ 85%) are being used. Due to their rapid setting and early strength (compressive strength of up to 1.5 MPa within 2 hours), they have become a new filling technology. This material, composed of a dual component (i.e., Material A (sulfoaluminate cement-based) and Material B (retarding setting enhancer), is particularly suitable for complex geological conditions such as steeply inclined coal seams.
[0003] Currently, during grouting, a pneumatic drill (hole diameter 75-150mm) is used to construct grouting holes on the coal seam roof or tunnel wall. The hole depth is 10-50m and the elevation angle is 5°-15° to prevent slurry backflow. The grouting pipe is then pushed to the bottom of the hole to form a continuous filling body, which is then left to solidify so that it can form a stable protective effect inside the hole.
[0004] Although the above technical solution has solved the problem well, in actual operation, since the height of the underground tunnel is usually less than 2.5m, large-scale grouting equipment is difficult to deploy. Due to the particularity of the material, the underground temperature can reach 45-50°C and the relative humidity is greater than 95%, which accelerates the premature hydration of high-water materials (the initial setting time is shortened to 15-20 seconds). In addition, the complexity of the internal fracture network of the rock mass significantly affects the slurry penetration effect, such as the coexistence of multi-scale fractures, heterogeneous permeability and dynamic closure effect, resulting in the dynamic closure effect reducing the grouting efficiency. Summary of the Invention
[0005] The present invention provides a grouting device for high-water filling materials, which solves the technical problem in the related art that the grouting efficiency is low due to the particularity of the materials and environmental problems.
[0006] The present invention provides a grouting device for high-water filling materials, comprising:
[0007] Grouting carrier, the surface of the grouting carrier is provided with a double-pass access body, and the interior of the grouting carrier is provided with a mixing fan body, which is used to quickly mix material A and material B in the working state;
[0008] A sealing mechanism is provided in the grouting direction of the grouting carrier to seal the grouting holes based on the grouting degree;
[0009] The auxiliary mechanism is arranged at the end of the sealing mechanism and is connected to the inside of the grouting carrier, and is used for rapid filling and grouting of holes and cracks in the tunnel.
[0010] Preferably, the sealing mechanism includes an auxiliary cylinder arranged on the grouting carrier, a conical rubber ring arranged on the surface of the auxiliary cylinder, a circular airbag arranged at the end of the conical rubber ring, and an elastic member arranged in the auxiliary cylinder relative to the auxiliary cylinder with the auxiliary cylinder as the axis.
[0011] Preferably, the elastic member includes a telescopic cylinder arranged in the auxiliary cylinder, and a spring sleeved on the surface of the telescopic cylinder.
[0012] Preferably, the auxiliary mechanism includes a short cylinder arranged at the end of the telescopic cylinder, and two groups of rectangular slots are symmetrically opened on the surface of the short cylinder with the short cylinder as the axis, and two groups of arc slots are symmetrically opened inside the short cylinder with the short cylinder as the axis, and a swinging part is rotatably connected inside each rectangular slot, and a pad is provided to limit the swinging part, and a traction part is provided inside each swinging part.
[0013] Preferably, the arc-shaped notches and the rectangular notches are internally connected to each other and are aligned in number.
[0014] Preferably, the swing member includes a rotating rod rotatably connected to the inside of the rectangular slot, a spraying port is fixedly connected to the inside of the rotating rod, and a bellows is fixedly connected to the inside of the spraying port.
[0015] Preferably, the traction member includes a grouting rod body arranged inside the corrugated pipe, and a trigger block arranged on the surface of the grouting rod body.
[0016] Preferably, the grouting rod body slides inside the arc-shaped slot and is communicated with the grouting carrier inside the grouting carrier.
[0017] Preferably, the trigger block contacts the grouting port when the grouting rod slides inside the arc-shaped slot, and is made of a flexible material.
[0018] Preferably, the bellows is made of metal and has a certain elasticity.
[0019] The beneficial effects of the present invention are:
[0020] 1. The present invention provides a grouting carrier, a double-pass access body and a mixing fan body. When grouting the grouting hole, both materials A and B can be connected. Then, through the high-pressure characteristics of the mixing fan body and the access pipe, the high-water filling material is quickly mixed, and then grouting is carried out quickly, thereby achieving the effect of shortening the construction time.
[0021] 2. The present invention provides a sealing mechanism and an auxiliary mechanism. When the circular airbag penetrates deep into the grouting hole, the diameter of the circular airbag is squeezed to increase, and at the same time, the conical rubber ring is driven to expand. The deeper the auxiliary cylinder goes into the hole, the better the sealing effect is, which reduces the effect of the slurry being reflected from the hole wall under high pressure during grouting.
[0022] 3. The present invention provides a swinging member and a pulling member. When grouting the inside of the hole wall, the auxiliary cylinder can be pushed forward or away from the hole wall path. Since there are cross-shaped cracks inside the hole wall, the rotation of the grouting nozzle can be used to grout the inside of the intricate cracks during grouting, making the grouting state inside the hole wall more complete, reducing the possibility that the voids in the cracks cannot be fixed and supported by the slurry, and reducing safety hazards.
[0023] 4. The present invention arranges the auxiliary cylinder and the short cylinder. When grouting is carried out inside the hole wall, the grouting head will extend. When it does not reach the inside of the hole wall or is not in use, the short cylinder will be pushed out by the elastic part to protect the grouting head, reduce the collision of the grouting head, and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0025] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;
[0026] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the sealing mechanism of the present invention;
[0027] Figure 4 It is a schematic diagram of the partially disassembled structure of the sealing mechanism of the present invention;
[0028] Figure 5 This is a schematic structural diagram of the auxiliary mechanism of the present invention in working state;
[0029] Figure 6 It is a schematic diagram of a partial cross-sectional structure of the auxiliary mechanism of the present invention;
[0030] Figure 7 This is a schematic diagram of the cross-section structure of the auxiliary component of the present invention;
[0031] Figure 8 It is a schematic diagram of the swinging member and the pulling member of the present invention.
[0032] In the figure: 100, grouting carrier; 101, double-channel access body; 102, mixing fan; 200, sealing mechanism; 201, auxiliary cylinder; 202, conical rubber ring; 203, circular airbag; 204, elastic member; 2041, telescopic cylinder; 2042, spring; 300, auxiliary mechanism; 301, short cylinder; 302, rectangular notch; 303, arc-shaped notch; 304, swing member; 3041, rotating rod; 3042, spraying port; 3043, bellows; 305, traction member; 3051, grouting rod; 3052, trigger block. DETAILED DESCRIPTION
[0033] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. Furthermore, features described in some examples may be combined in other examples.
[0034] like Figures 1-8 As shown, this embodiment provides a grouting device for high-water filling materials, comprising:
[0035] The grouting carrier 100 is provided with a double-pass access body 101 on the surface of the grouting carrier 100, and a mixing fan body 102 is provided inside the grouting carrier 100. In the working state, it is used to quickly mix material A and material B. The grouting carrier 100 is connected to the material A sulphoaluminate cement base and the material B retarding enhancer respectively by the double-pass access body 101, and then enters the interior of the grouting carrier 100. Due to the characteristics of material A and material B, they are respectively fused with water before use, and then the two materials A and B are mixed separately to avoid rapid solidification. If the mixing time is too long, the strength of the material will be greatly reduced. After entering the interior of the grouting carrier 100, the mixing fan body 102 mixes the materials by passing through the high pressure. Under special conditions, such as when the temperature is too high, a driving motor or power source can be installed on the mixing fan body 102 and connected to the mixing fan body 102 to accelerate the fusion. However, the driving components cannot come into contact with high-water materials, otherwise they will be affected by rapid solidification, causing damage to the power device and making cleaning difficult.
[0036] The sealing mechanism 200 is arranged in the grouting direction of the grouting carrier 100 and seals the grouting holes based on the grouting degree. While protecting the grouting nozzle of the grouting carrier 100, the sealing mechanism 200 also seals the grouting hole wall.
[0037] The auxiliary mechanism 300 is provided at the end of the sealing mechanism 200 and is communicated with the interior of the grouting carrier 100, and is used for rapid filling and grouting of holes and cracks in the tunnel.
[0038] like Figure 3As shown, the sealing mechanism 200 includes an auxiliary cylinder 201 provided on the grouting carrier 100, a conical rubber ring 202 provided on the surface of the auxiliary cylinder 201, a circular air bag 203 provided at the end of the conical rubber ring 202, and an elastic member 204 provided in the auxiliary cylinder 201 with the auxiliary cylinder 201 as the axis. When the short cylinder 301 contacts the inside of the hole wall, the auxiliary cylinder 201 is limited by the elastic member 204 in the auxiliary cylinder 201 and the inside of the short cylinder 301. , only linear motion is performed. When the short cylinder 301 does not move, the auxiliary cylinder 201 moves close to the short cylinder 301, and then the gap between the short cylinder 301 and the auxiliary cylinder 201 becomes smaller and smaller, and then the circular airbag 203 is squeezed. The outer diameter of the circular airbag 203 inside the squeezed space will become larger. At the same time, the conical rubber ring 202 will block the inside of the grouting hole wall due to the change of the circular airbag 203, and the high-pressure slurry at the nozzle of the grouting carrier 100 will not flow out from the inside of the hole wall.
[0039] like Figure 5 As shown, the elastic member 204 includes a telescopic cylinder 2041 disposed in the auxiliary cylinder 201, and a spring 2042 sleeved on the surface of the telescopic cylinder 2041. When no force is applied to the auxiliary cylinder 201 and the short cylinder 301 is still in contact with the inner wall of the hole, the interior of the short cylinder 301 where the telescopic cylinder 2041 contacts will be pulled up to the maximum stroke due to the reset of the spring 2042, and the nozzle of the grouting carrier 100 will be retracted into the interior of the short cylinder 301.
[0040] In the second case, when the short cylinder 301 does not contact the inside of the hole wall, the spring 2042 drives the telescopic cylinder 2041 to reset to the maximum stroke. When the auxiliary cylinder 201 and the short cylinder 301 approach each other, the stroke of the elastic member 204 becomes the shortest state.
[0041] The auxiliary mechanism 300 includes a short cylinder 301 arranged at the end of the telescopic cylinder 2041, and two groups of rectangular slots 302 are symmetrically opened on the surface of the short cylinder 301 with the short cylinder 301 as the axis, and two groups of arc slots 303 are symmetrically opened inside the short cylinder 301 with the short cylinder 301 as the axis, each rectangular slot 302 is rotatably connected to the inside of a swinging member 304, and a pad is provided to limit the swinging member 304, and a traction member 305 is provided inside each swinging member 304, and the pad is arranged inside the rectangular slot 302 away from the elastic member 204. In the initial state, the swinging member 304 will be tilted with respect to the axis of the short cylinder 301, and the swinging member 304 is conical when observed at this time.
[0042] The arc-shaped slots 303 and the rectangular slots 302 are internally connected to each other, and the numbers of the slots 303 and the rectangular slots 302 are aligned one by one.
[0043] The swing member 304 includes a rotating rod 3041 rotatably connected to the inside of the rectangular slot 302, a grouting port 3042 is fixedly connected to the inside of the rotating rod 3041, and a bellows 3043 is fixedly connected to the inside of the grouting port 3042. The grouting port 3042 is restricted by the rotating rod 3041 to rotate inside the rectangular slot 302. When the bellows 3043 moves in the grouting direction, it will cooperate with the traction member 305 to move the grouting port 3042 in the opposite direction of grouting to grout the cracks in the direction of the workers' construction. When the bellows 3043 moves in the opposite direction, it will pull the grouting port 3042, so that the grouting port 3042 moves in the grouting direction, and the gaps in the opposite direction of the hole wall are filled with material.
[0044] The traction member 305 includes a grouting rod body 3051 disposed inside the bellows 3043 , and a trigger block 3052 disposed on the surface of the grouting rod body 3051 .
[0045] The grouting rod body 3051 slides inside the arc-shaped slot 303 and is connected to the grouting carrier 100 inside the grouting carrier 100. The grouting rod body 3051 is connected to the grouting carrier 100 and slides inside the arc-shaped slot 303. Due to the restriction of the elastic member 204, the grouting rod body 3051 and the elastic member 204 move in the same direction in a straight line. The grouting rod body 3051 is made of a rigid material.
[0046] The trigger block 3052 contacts the grouting port 3042 when the grouting rod 3051 slides inside the arc-shaped slot 303 and is made of a flexible material.
[0047] The bellows 3043 is made of metal and has a certain elasticity.
[0048] Working principle:
[0049] Connect the A and B double materials to the inside of the double-way access body 101. At this time, the double material pipeline does not transmit. The auxiliary component 300 and the sealing mechanism 200 are sent into the inside of the hole wall. When the short cylinder 301 hits the inside of the grouting hole wall, the A and B double material valves are opened, and the auxiliary cylinder 201 moves toward the short cylinder 301. The telescopic cylinder 2041 of the elastic component 204 contracts. At the same time, the circular airbag 203 is squeezed and moves toward the hole wall. The inner ring of the circular airbag 203 is restricted by the telescopic cylinder 2041 and the grouting rod 3051 and does not move inward, so the part of the hole wall in contact with the outside world is sealed. When the grouting rod 3051 moves in the grouting direction, the trigger block 3052 contacts the grouting port 3042, and the grouting port 3042 begins to tilt, and grouting is performed on the cracks facing the positive direction. When the grouting rod 3051 moves backward, the trigger block 3052 does not contact the grouting port 3042, and then the grouting rod 3051 pulls the bellows 3043 to drive the grouting port 3042 to rotate, and the grouting port 3042 moves in an arc, and high-pressure grouting is performed on the remaining cracks facing the opposite direction in the grouting direction. When the high-water material begins to solidify, the device is pulled out, and the above operations are completed.
[0050] The above describes an embodiment of the present invention, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms based on the inspiration of this embodiment, all of which are protected by this embodiment.
Claims
1. A grouting device for high-water filling materials, characterized in that: include; A grouting carrier (100), wherein a double-pass access body (101) is provided on the surface of the grouting carrier (100), and a mixing fan body (102) is provided inside the grouting carrier (100), and is used to quickly mix material A and material B in a working state; A sealing mechanism (200) is provided in the grouting direction of the grouting carrier (100) and performs a plugging process on the grouting holes based on the grouting degree; The auxiliary mechanism (300) is arranged at the end of the sealing mechanism (200) and is connected to the inside of the grouting carrier (100), and is used for quickly filling and grouting holes and cracks in the tunnel.
2. A grouting device for high-water filling materials according to claim 1, characterized in that: The sealing mechanism (200) comprises an auxiliary cylinder (201) arranged on the grouting carrier (100), a conical rubber ring (202) arranged on the surface of the auxiliary cylinder (201), a circular air bag (203) arranged at the end of the conical rubber ring (202), and an elastic member (204) arranged in the auxiliary cylinder (201) relative to the auxiliary cylinder (201) with the auxiliary cylinder (201) as the axis.
3. A grouting device for high-water filling materials according to claim 2, characterized in that: The elastic member (204) comprises a telescopic cylinder (2041) arranged in the auxiliary cylinder (201), and a spring (2042) sleeved on the surface of the telescopic cylinder (2041).
4. A grouting device for high-water filling materials according to claim 3, characterized in that: The auxiliary mechanism (300) comprises a short cylinder (301) arranged at the end of a telescopic cylinder (2041); two groups of rectangular notches (302) are symmetrically provided on the surface of the short cylinder (301) with the short cylinder (301) as the axis; two groups of arc-shaped notches (303) are symmetrically provided inside the short cylinder (301) with the short cylinder (301) as the axis; a swinging member (304) is rotatably connected inside each rectangular notch (302), and a pad is provided for limiting the position of the swinging member (304); and a traction member (305) is provided inside each swinging member (304).
5. A grouting device for high-water filling materials according to claim 4, characterized in that: The arc-shaped notches (303) and the rectangular notches (302) are internally connected to each other, and the numbers of the notches are aligned one by one.
6. A grouting device for high-water filling materials according to claim 5, characterized in that: The swing member (304) comprises a rotating rod (3041) rotatably connected to the inside of the rectangular slot (302); a spraying port (3042) is fixedly connected to the inside of the rotating rod (3041); and a bellows (3043) is fixedly connected to the inside of the spraying port (3042).
7. A grouting device for high-water filling materials according to claim 6, characterized in that: The traction member (305) comprises a grouting rod body (3051) arranged inside the corrugated pipe (3043), and a trigger block (3052) arranged on the surface of the grouting rod body (3051).
8. A grouting device for high-water filling materials according to claim 7, characterized in that: The grouting rod (3051) slides inside the arc-shaped slot (303) and is connected to the grouting carrier (100) inside the grouting carrier (100).
9. A grouting device for high-water filling materials according to claim 8, characterized in that: The trigger block (3052) contacts the grouting port (3042) when sliding inside the arc-shaped slot (303) through the grouting rod (3051), and is made of a flexible material.
10. A grouting device for high-water filling materials according to claim 9, characterized in that: The bellows (3043) is made of metal and has a certain elasticity.