A device and method for treating gangue

Abstract

The present invention discloses a device and a method for treating gangue, belonging to the technical field of gangue treatment, and is used to solve the problems that mine tailings pollute the environment or goaf affects the safe production of coal mines in the prior art. The treatment device includes a feeding unit, a crushing unit, a water supply unit, a pulp making unit, a grouting hole and a grouting unit. The feeding unit, the crushing unit, the pulp making unit, the grouting unit and the grouting hole are connected in sequence. The water outlet of the water supply unit is connected to the water inlet of the pulp making unit, and the slurry outlet of the grouting hole is connected to the separated layer space of the overlying strata formed by coal mining. The treatment method uses the above-mentioned device for treating gangue. The present invention can be used for the treatment of gangue.

Description

Technical Field

[0001] The present invention belongs to the technical field of gangue treatment, and particularly relates to a gangue treatment device and a treatment method. Background Art

[0002] Gangue treatment refers to various technical measures taken for the safe discharge of gangue produced in coal mines. In the prior art, gangue is usually

[0003] Mine tailings contain a large amount of organic components, and are also rich in metals, sulfides, etc. They are pollution sources of inorganic salts and will pollute the environment through leaching by atmospheric precipitation.

[0004] On the one hand, when mine tailings are transported from underground or surface processing workshops to the surface for disposal, the drastic change in the environment accelerates their weathering, promotes the dissolution of soluble components, and aggravates the environmental pollution of the tailing mine; on the other hand, coal mining will cause separated water above the goaf, which seriously affects the safe production of the mine. Summary of the Invention

[0005] In view of the above analysis, the present invention aims to provide a gangue treatment device and a treatment method to solve the problems of environmental pollution by mine tailings or the influence of the goaf on the safe production of the mine in the prior art.

[0006] The object of the present invention is mainly achieved through the following technical solutions.

[0007] The present invention provides a gangue treatment device, which includes a feeding unit, a crushing unit, a water supply unit, a pulping unit, a grouting hole and a grouting unit. The feeding unit, the crushing unit, the pulping unit, the grouting unit and the grouting hole are connected in sequence. The water outlet of the water supply unit is connected to the water inlet of the pulping unit, and the slurry outlet of the grouting hole is connected to the separated layer space of the overlying rock formed by coal mining.

[0008] Further, the distance between two adjacent grouting holes is 300 - 500 m.

[0009] Further, the grouting hole includes a cementing layer, a first casing pipe and a second casing pipe. The cementing layer is arranged on the outer wall of the first casing pipe, and the first casing pipe and the second casing pipe are connected in sequence along the direction gradually away from the ground.

[0010] Further, the inner diameter ratio of the first casing pipe to the second casing pipe is 1.5 - 2.0.

[0011] Further, the first casing pipe is hermetically connected to the second casing pipe through a grout plug.

[0012] Further, the grouting unit includes a grouting pipe and a grouting valve arranged on the grouting pipe. The slurry outlet of the grouting pipe is connected to the grouting hole.

[0013] Further, it further includes a grouting pressure gauge disposed in the grouting hole.

[0014] Further, it further includes a centralized control center which receives the real-time grouting pressure collected by the grouting pressure gauge and determines whether the real-time grouting pressure is equal to the preset pressure corresponding to a certain grouting stage;

[0015] If not, the centralized control center adjusts the grouting unit according to the preset pressure so that the real-time grouting pressure is equal to the preset pressure.

[0016] Further, the grouting pressure gauge is disposed at the upper opening of the grouting hole.

[0017] The present invention also provides a method for treating gangue, which uses the above-mentioned gangue treatment device.

[0018] Compared with the prior art, the present invention can at least achieve one of the following beneficial effects.

[0019] A) The gangue treatment device provided by the present invention, through the provided feeding unit, crushing unit, water supply unit and slurry preparation unit, can make gangue into qualified slurry, and then inject the qualified slurry into the overlying rock separation space through the borehole grouting unit, so as to realize the treatment and effective utilization of gangue, and solve the problems of mine tailings polluting the environment and goaf affecting the safe production of mines in the prior art.

[0020] B) The gangue treatment device provided by the present invention, on the one hand, using this kind of gangue treatment device can return gangue to nature without affecting the normal production of the mine; on the other hand, all the overlying rock separation spaces appearing in the mine are filled with gangue, so that the groundwater in the overlying rock separation space is "squeezed out", eliminating the threat of mine water disasters; on the other hand, the qualified slurry of gangue with pressure is filled into the overlying rock separation space, and the self-weight of the qualified slurry can accelerate the fracture above the coal seam, thereby reducing the probability of inducing rock burst disasters.

[0021] In the present invention, the above technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can be made obvious from the description, or understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the embodiments of the description and the content specifically pointed out in the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are only for the purpose of showing specific embodiments and are not considered as a limitation to the present invention. Throughout the drawings, the same reference signs represent the same components.

[0023] Figure 1 It is a schematic diagram of the principle of the gangue treatment device provided in Embodiment 1 of the present invention;

[0024] Figure 2 A schematic structural diagram of a gangue processing device provided in Embodiment 1 of the present invention;

[0025] Figure 3 A schematic diagram of the structure of the grouting holes in the gangue processing device provided in the first embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of a conveying unit in a gangue processing device provided in Example 1 of the present invention.

[0027] Reference numerals:

[0028] 1-feeding unit; 2-crushing unit; 3-slurry making unit; 4-grouting unit; 5-grouting hole; 51-cementing layer; 52-first casing; 53-second casing; 6-primary conveyor belt; 7-secondary conveyor belt; 8-tertiary conveyor belt; 9-driving block; 10-lower guide protrusion; 11-upper guide protrusion. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0030] Embodiment 1

[0031] This embodiment provides a device for processing gangue, see Figures 1 to 2 , including a feeding unit 1, a crushing unit 2, a water supply unit, a pulping unit 3, a grouting hole 5 and a grouting unit 4. The feeding unit 1, the crushing unit 2, the pulping unit 3, the grouting unit 4 and the grouting hole 5 are connected in sequence, the water outlet of the water supply unit is connected to the water inlet of the pulping unit 3, and the grouting outlet of the grouting hole 5 is connected to the overburden stratum separation space formed by coal mining.

[0032] During implementation, the treatment method using the above-mentioned gangue treatment device comprises the following steps:

[0033] Step 1: The secondary waste (i.e., gangue, with a material size of ≤200mm) of no utilization value generated after washing and processing in the coal preparation plant is collected in the feeding unit 1 through a belt conveyor;

[0034] Step 2: The gangue in the feeding unit 1 is transported to a jaw crusher by car and crushed to ≤40 mm, and then enters a double-roller sand making machine and crushed to ≤10 mm to obtain gangue particles;

[0035] Step 3: conveying the gangue particles to a pulping unit 3 (e.g., an overflow ball mill) for grinding and pulping to generate slurry, and then supplying the slurry to a stirring tank for stirring to produce a qualified slurry;

[0036] Step 4: Use a drilling machine to drill holes in the rock stratum above the separated overburden space to form grouting holes 5; use a grouting unit 4 (for example, a grouting pump) to pump qualified slurry into the separated overburden space through the grouting holes 5 and inject the grouting liquid into the separated overburden space.

[0037] Compared with the prior art, the gangue treatment device provided by the present invention can make qualified slurry from gangue through the provided feeding unit 1, crushing unit 2, water supply unit and pulp making unit 3, and then inject the qualified slurry into the separated overburden space through the drilling and grouting unit 4, so as to realize the treatment and effective utilization of gangue, and solve the problems of environmental pollution caused by mine tailings and the influence of goaf on the safe production of mines in the prior art.

[0038] Specifically, on the one hand, using such a gangue treatment device can return gangue to nature without affecting the normal production of the mine; on the other hand, all the separated overburden spaces in the mine are filled with gangue, so that the groundwater in the separated overburden space is "squeezed out" to eliminate the threat of mine water disasters; on the other hand, the qualified slurry of gangue with pressure is filled into the separated overburden space, and the self-weight of the qualified slurry can accelerate the fracture above the coal seam, thereby reducing the probability of inducing rock burst disasters.

[0039] To ensure the grouting efficiency, exemplarily, the distance between two adjacent grouting holes 5 is 300 - 500 m.

[0040] To ensure the stability of the grouting hole 5 during the grouting process, for the structure of the grouting hole 5, see Figure 3 , specifically, the grouting hole 5 includes a cementing layer 51, a first casing 52 and a second casing 53. The cementing layer 51 is provided on the outer wall of the first casing 52, and the first casing 52 and the second casing 53 are connected in sequence along the direction gradually away from the ground.

[0041] To facilitate construction, the inner diameter ratio of the first casing 52 to the second casing 53 is 1.5 - 2.0.

[0042] It should be noted that there is a change in the inner diameter between the first casing 52 and the second casing 53. To prevent the qualified slurry injected into the separated overburden space from flowing back into the first casing 52, the first casing 52 is hermetically connected to the second casing 53 through a grout plug.

[0043] Based on the structure of the grouting hole 5, the above grouting unit 4 includes a grouting pipe and a grouting valve provided on the grouting pipe, and the grouting is controlled by controlling the opening and closing of the grouting valve.

[0044] Considering that the particle sizes of gangue particles are different, the characteristics of the separated strata space in the overlying rock and the required slurry ratio are also different. However, if the gangue particles are directly crushed to a smaller particle size, the roller crusher needs to be used for multiple crushing, resulting in waste of energy. Therefore, exemplarily, the above-mentioned gangue treatment device further includes a conveying unit. The crushing unit 2 is connected to the pulp making unit 3 through the conveying unit. The conveying unit includes a first-stage conveyor belt 6, a second-stage conveyor belt 7, a third-stage conveyor belt 8, a first-stage particle bin, a second-stage particle bin, and a third-stage particle bin. Refer to Figure 4 , the first-stage conveyor belt 6, the second-stage conveyor belt 7, and the third-stage conveyor belt 8 are arranged in parallel in the vertical direction. The particle input ends of the first-stage conveyor belt 6, the second-stage conveyor belt 7, and the third-stage conveyor belt 8 are respectively connected to the particle output end of the crushing unit 2. The particle output end of the first-stage conveyor belt 6 is connected to the feed inlet of the first-stage particle bin. The particle output end of the second-stage conveyor belt 7 is connected to the feed inlet of the second-stage particle bin. The particle output end of the third-stage conveyor belt 8 is connected to the feed inlet of the third-stage particle bin. The discharge outlets of the first-stage particle bin, the second-stage particle bin, and the third-stage particle bin are respectively connected to the feed inlet of the pulp making unit 3. Sieve holes are provided on the first-stage conveyor belt 6 and the second-stage conveyor belt 7, and no sieve holes are provided on the third-stage conveyor belt 8. The aperture of the sieve holes on the first-stage conveyor belt 6 is larger than the aperture of the sieve holes on the second-stage conveyor belt 7. In this way, through the arrangement of the first-stage conveyor belt 6, the second-stage conveyor belt 7, and the third-stage conveyor belt 8, it is possible to classify the particle sizes of the gangue particles while conveying them, and store the gangue particles with different particle sizes after classification in different particle bins (i.e., the first-stage particle bin, the second-stage particle bin, and the third-stage particle bin), so as to be able to select a suitable slurry formula according to the gangue particles with different particle sizes.

[0045] Considering that the first-stage particle bin, the second-stage particle bin, and the third-stage particle bin are all connected to the feed inlet of the pulp making unit 3, in order to ensure that only one of the particle bins is connected to the pulp making unit 3, discharge members are provided at the discharge outlets of the first-stage particle bin, the second-stage particle bin, and the third-stage particle bin, and one of the first-stage particle bin, the second-stage particle bin, and the third-stage particle bin is connected to the pulp making unit 3 through the discharge member.

[0046] In order to realize the vibration screening of the first-level conveyor belt 6 and the second-level conveyor belt 7, the above-mentioned conveying unit further includes multiple groups of vibration driving members. Each group of vibration driving members includes a driving block 9, a lower guiding projection 10, and an upper guiding projection 11. Among them, the lower guiding projections 10 are provided on both sides of the lower surface of the first-level conveyor belt 6, and the upper guiding projections 11 are provided on both sides of the upper surface of the second-level conveyor belt 7. Along the conveying direction, the cross-sectional shape of the lower guiding projection 10 is a right triangle, one right side of which is connected to the first-level conveyor belt 6, and the other right side is located behind the hypotenuse. Along the conveying direction, the cross-sectional shape of the upper guiding projection 11 is a right triangle, one right side of which is connected to the second-level conveyor belt 7, and the other right side is located behind the hypotenuse. The driving block 9 is located between the upper guiding projection 11 and the lower guiding projection 10 and is in sliding contact with both of them respectively. In this way, relative to the installation surface, the driving member is in a stationary state, and the first-level conveyor belt 6 and the second-level conveyor belt 7 are in a moving state. When the upper guiding projection 11 and the lower guiding projection 10 pass through the driving member, the driving member is in sliding contact with the upper guiding projection 11 and the lower guiding projection 10, so that the distance between the first-level conveyor belt 6 and the second-level conveyor belt 7 gradually increases. The upper guiding projection 11 and the lower guiding projection 10 continue to move. At the moment when the driving member disengages from the upper guiding projection 11 and the lower guiding projection 10, the distance between the first-level conveyor belt 6 and the second-level conveyor belt 7 will suddenly decrease, and then reciprocating vibration occurs, thereby realizing the vibration screening of the first-level conveyor belt 6 and the second-level conveyor belt 7. It should be noted that the vibration screening in the prior art all relies on a reciprocating motor to drive reciprocating motion, while the vibration driving member in this embodiment does not require any electrical equipment and can realize vibration screening only through structural design.

[0047] It can be understood that the grouting pressure will directly affect the grouting efficiency and grouting effect. In order to be able to monitor the grouting pressure in real time, the above-mentioned gangue treatment device further includes a grouting pressure gauge arranged in the grouting hole 5, and the grouting pressure is monitored in real time through the grouting pressure gauge. According to different grouting stages and the grouting pressure measured by the grouting pressure gauge, the grouting pressure is adjusted.

[0048] Specifically, in order to be able to automatically adjust the grouting pressure, the above-mentioned gangue treatment device further includes a centralized control center. The centralized control center receives the real-time grouting pressure collected by the grouting pressure gauge and judges whether the real-time grouting pressure is equal to the preset pressure corresponding to a certain grouting stage. If not, the centralized control center adjusts the grouting unit 4 according to the preset pressure so that the real-time grouting pressure is equal to the preset pressure.

[0049] Considering that the control of the grouting pressure for injecting qualified grout into the grouting hole 5 can be realized by controlling the grouting pressure at the upper opening of the grouting hole 5, therefore, the above-mentioned grouting pressure gauge is arranged at the upper opening of the grouting hole 5.

[0050] In order to prevent the separated strata space in the overlying rock from communicating with the goaf, the separated strata space in the overlying rock is located above the water-conducting fissure zone.

[0051] Embodiment 2

[0052] This embodiment provides a method for treating gangue, using the gangue treatment device provided in the first embodiment, and the method comprises the following steps:

[0053] Step 1: The secondary waste (i.e. gangue, with a size of ≤200mm) of no utilization value generated after the coal preparation plant is collected in the feeding unit through a belt conveyor;

[0054] Step 2: The gangue in the feeding unit is transported to the jaw crusher by car and crushed to a particle size of ≤40mm, and then enters the double-roller sand making machine to be crushed to a particle size of ≤10mm to obtain gangue particles;

[0055] Step 3: conveying the gangue particles to a pulping unit (e.g., an overflow ball mill) for grinding and pulping to generate slurry, and then supplying the slurry to a stirring tank for stirring to produce a qualified slurry;

[0056] Step 4: Use a drilling machine to drill holes in the rock layer above the overburden separation space to form grouting holes; use a grouting unit (for example, a grouting pump) to pump qualified slurry into the overburden separation space through the grouting holes.

[0057] Compared with the prior art, the beneficial effects of the gangue processing method provided in this embodiment are substantially the same as the beneficial effects of the gangue processing device provided in the first embodiment, and are not described in detail here.

[0058] For example, the gangue is sandy mudstone with a particle size of 100-120 mesh. The proportion of qualified slurry is as follows: water-ash ratio is 1.3-1.7:1, water weight is 585-765g, ash weight is 450g, slurry volume is 775-955ml, viscosity is 15.5-19.5Pa·S, density is 1.25-1.40g / cm 3 The mass concentration of ash (i.e. gangue particles) is 37-43.5%.

[0059] The specific slurry ratio is shown in Table 1 below.

[0060] Table 1 Slurry ratio test list

[0061]

[0062] Specifically, the spacing between adjacent grouting holes is calculated using the following formula:

[0063] L j ≤2k j R k

[0064] Where: L j is the distance between adjacent grouting holes, m; kj is the safety factor, taking 0.5; R k is the slurry diffusion radius, m; M is the mining height, m.

[0065] For the determination of the grouting pressure for injecting qualified slurry into the grouting hole, the grouting pressure should not be less than the natural ground pressure of the strata above the overlying strata separation space, which can not only ensure that the overlying strata separation space is not damaged, but also promote the development of the overlying strata separation space. Specifically, the grouting pressure is expressed as

[0066] p 注 ≥ p 地

[0067] In the formula: p 注 is the grouting pressure, kPa; p 地 is the natural pressure of the strata above the overlying strata separation space, kPa.

[0068] In actual construction, the control of the grouting pressure for injecting qualified slurry into the grouting hole can be achieved by controlling the grouting pressure p 孔 (kPa) at the upper opening of the grouting hole:

[0069] p 孔 = p 注 - H1γ1 ≥ p 地 - H1γ1 = H1(γ - γ1)

[0070] In the formula: H1 is the depth from the ground surface to the overlying strata separation space, m; γ is the comprehensive specific gravity of the strata above the overlying strata separation space, kN / m 3 ; γ1 is the specific gravity of the qualified slurry, kN / m 3 .

[0071] For example, H1 = 522.6 m, γ = 25 kN / m 3 , γ1 = 13 kN / m 3 , then correspondingly, the grouting pressure p 孔 ≥ 6.26 MPa.

[0072] In order to ensure the drilling quality, in step 4 above, the drilling of the strata above the overlying strata separation space includes the following steps:

[0073] Step 41: First-stage drilling.

[0074] Use a roller bit for first-stage drilling, enter the bedrock, lower the first casing, and perform cementing to form a cementing layer on the outer wall of the first casing;

[0075] Step 42: Second-stage drilling.

[0076] Use the second casing pipe to drill directional holes according to the design of each hole body, and drill to a depth of 20 - 30 m from the top of the overlying strata separation space;

[0077] Use a core bit for core drilling, drill to a depth of 4 - 5 m from the top of the overlying strata separation space, lower the third casing pipe, and use cement for well cementing.

[0078] It should be noted that by using the above drilling method and performing two cement well cements, the hydraulic connection between the upper and lower strata can be effectively blocked, ensuring the stability of the grouting hole during the grouting process.

[0079] The theoretical basis of ground subsidence grouting is the separation theory. The separation has a process of occurrence, development, and final closure. The best timing for grouting is during the period when the separation develops to the maximum. Therefore, before injecting the qualified slurry into the grouting hole using the grouting pump in the drilling and grouting unit in step 4 above, the following steps are also included:

[0080] Calculate the grouting speed to ensure that there is a sufficient grouting intensity when the separation opening is the largest, and use this as the basis for selecting the grouting pump.

[0081] Specifically, the grouting speed is calculated using the following formula:

[0082] Q = AHv c

[0083] In the formula: Q is the grouting speed (i.e., the pump volume), m 3 / h; A - subsidence coefficient, which can be determined according to observations in actual applications; H is the width of the mining face, m; v c is the advancing speed of the mining face, m 2 / h.

[0084] For the design pressure of the grouting unit, specifically, it should be greater than the pressure required for the connection pipeline between the grouting unit and the grouting hole. Among them, the pressure required for the connection pipeline between the grouting unit and the grouting hole is calculated using the following formula:

[0085] Pk = ρ k ·gH + ρ s gi k L + P j + P n + P z

[0086] In the formula: Pk is the pressure required for the connection pipeline of the grouting hole, kPa; g is the acceleration of gravity, m / s 2 ; H is the geometric height of pumping the qualified slurry, m; ρ k is the density of the qualified slurry, kg / m 3 ; ρ s is the density of water, kg / m3 ; i k is the frictional head loss along the connecting pipeline of qualified slurry, mH2O / m; P j is the local frictional loss of the connecting pipeline, kPa; P n is the frictional loss of pipeline parts in the grouting unit, kPa; P z is the remaining head of the terminal qualified slurry, kPa.

[0087] The calculation formulas for the inner diameter and wall thickness of the connecting pipeline between the grouting unit and the grouting hole are as follows:

[0088]

[0089] In the formula: D is the inner diameter of the connecting pipeline, m; Q is the grouting speed (i.e., the pump capacity), m 3 / h; V is the flow velocity of qualified slurry, m / s.

[0090]

[0091] In the formula: t is the wall thickness of the straight pipe section of the connecting pipeline between the grouting unit and the grouting hole, mm; the pressure required for transporting the connecting pipeline between the grouting unit and the grouting hole, MPa; D is the inner diameter of the connecting pipeline, m; K is the design coefficient, which is taken as 0.72 in general areas outside the pumping station, and 0.6 in densely populated areas such as inside the pumping station, large crossing pipe sections, urban central areas, suburban residential areas, commercial areas, industrial areas, and planned areas; σ s is the minimum yield strength of the connecting pipeline, MPa; φ is the weld coefficient of the connecting pipeline, which is taken according to the relevant provisions of the current national standard "Code for Design of Oil Pipeline Engineering" GB50253; C is the annual wear and corrosion rate, mm / a; S is the design service life of the connecting pipeline, a.

[0092] As mentioned above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A device for treating gangue, characterized in that, It includes a feeding unit, a crushing unit, a water supply unit, a pulping unit, a grouting hole and a grouting unit. The feeding unit, the crushing unit, the pulping unit, the grouting unit and the grouting hole are connected in sequence. The water outlet of the water supply unit is connected to the water inlet of the pulping unit. The slurry outlet of the grouting hole is connected to the separated overburden space formed by coal mining. The treatment device further includes a conveying unit. The crushing unit is connected to the pulping unit through the conveying unit. The conveying unit includes a first conveyor belt, a second conveyor belt, a third conveyor belt, a first particle bin, a second particle bin and a third particle bin. The first conveyor belt, the second conveyor belt and the third conveyor belt are arranged in parallel in the vertical direction. The particle input ends of the first conveyor belt, the second conveyor belt and the third conveyor belt are respectively connected to the particle outlet of the crushing unit. The particle output end of the first conveyor belt is connected to the feed inlet of the first particle bin. The particle output end of the second conveyor belt is connected to the feed inlet of the second particle bin. The particle output end of the third conveyor belt is connected to the feed inlet of the third particle bin. The discharge outlets of the first particle bin, the second particle bin and the third particle bin are respectively connected to the feed inlet of the pulping unit. Sieve holes are provided on the first conveyor belt and the second conveyor belt, and no sieve holes are provided on the third conveyor belt. The aperture of the sieve holes on the first conveyor belt is larger than the aperture of the sieve holes on the second conveyor belt. Discharging members are provided at the discharge outlets of the first particle bin, the second particle bin and the third particle bin, and one of the first particle bin, the second particle bin and the third particle bin is controlled to be connected to the pulping unit through the discharging member. The conveying unit further includes multiple groups of vibration driving members. Each group of vibration driving members includes a driving block, a lower guiding projection and an upper guiding projection. Lower guiding projections are provided on both sides of the lower surface of the first conveyor belt. Upper guiding projections are provided on both sides of the upper surface of the second conveyor belt. Along the conveying direction, the cross-sectional shape of the lower guiding projection is a right triangle, one right side of which is connected to the first conveyor belt, and the other right side is behind the hypotenuse. Along the conveying direction, the cross-sectional shape of the upper guiding projection is a right triangle, one right side of which is connected to the second conveyor belt, and the other right side is behind the hypotenuse. The driving block is located between the upper guiding projection and the lower guiding projection and is in sliding contact with both of them. Relative to the installation surface, the driving member is in a static state, and the first conveyor belt and the second conveyor belt are in a moving state. When the upper guiding projection and the lower guiding projection pass through the driving member, the driving member is in sliding contact with the upper guiding projection and the lower guiding projection, so that the distance between the first conveyor belt and the second conveyor belt gradually increases. The upper guiding projection and the lower guiding projection continue to move. At the moment when the driving member disengages from the upper guiding projection and the lower guiding projection, the distance between the first conveyor belt and the second conveyor belt decreases, resulting in reciprocating vibration.

2. The device for treating gangue according to claim 1, characterized in that, The distance between two adjacent grouting holes is 300 - 500 m.

3. The device for treating gangue according to claim 1, characterized in that, The grouting hole includes a cementing layer, a first casing pipe and a second casing pipe. The cementing layer is provided on the outer wall of the first casing pipe. The first casing pipe and the second casing pipe are connected in sequence along the direction gradually away from the ground.

4. The device for treating gangue according to claim 3, characterized in that, The inner diameter ratio of the first casing pipe to the second casing pipe is 1.5 - 2.

0.

5. The device for treating gangue according to claim 3, characterized in that, The first sleeve is hermetically connected to the second sleeve through a grout plug.

6. The device for treating gangue according to claim 1, characterized in that, The grouting unit includes a grouting pipe and a grouting valve provided on the grouting pipe, and the slurry outlet of the grouting pipe is connected to the grouting hole.

7. The device for treating gangue according to any one of claims 1 to 6, characterized in that, It also includes a grouting pressure gauge provided in the grouting hole.

8. The device for treating gangue according to claim 7, characterized in that, It further includes a centralized control center, which receives the real-time grouting pressure collected by the grouting pressure gauge and determines whether the real-time grouting pressure is equal to the preset pressure corresponding to a certain grouting stage; If not, the centralized control center adjusts the grouting unit according to the preset pressure so that the real-time grouting pressure is equal to the preset pressure.

9. The device for treating gangue according to claim 7, characterized in that, The grouting pressure gauge is provided at the upper opening of the grouting hole.

10. A method for treating gangue, characterized in that, Use the device for treating gangue according to any one of claims 1 to 9.

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