Composite permeable gravity type filling retaining wall

Abstract

The utility model discloses a composite permeable gravity type filling retaining wall which comprises gravity type retaining walls arranged on the two sides of a filling body, and the height of the gravity type retaining walls is larger than that of the filling body. The device further comprises a plurality of water filtering units which are arranged above the filling body and located between the gravity type retaining walls. Each water filtering unit comprises a water filtering film, a grating framework, a water collecting pipe and a water discharging pipe, the grating framework, the water collecting pipe and the water discharging pipe are sequentially arranged from top to bottom, and the grating framework and the water collecting pipe are fixedly connected to achieve the effects of space occupation and shape supporting; the water filtering film is arranged on the outer surfaces of the grating framework and the water collecting pipe; a plurality of catchment holes are evenly distributed in the pipe wall of the catchment pipe, the catchment pipe is communicated with the drainage pipe, and the drainage pipe penetrates through the whole retaining wall and is used for discharging filtered water collected by the water filtering unit. The retaining wall effectively solves the contradiction that a conventional concrete retaining wall is poor in water permeability and insufficient in bearing capacity of a permeable structure, and high strength and high water permeability of the filling retaining wall are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of metal mine underground filling, in particular to a composite water-permeable gravity type filling retaining wall. BACKGROUND

[0002] In the field of mine filling, most of the metal mines or part of the non-metallic mines begin to use the whole tailings produced by the mine dressing plant for filling the underground goaf, which not only can improve the utilization rate of tailings, reduce the discharge pressure of tailings pond, but also can meet the rigid requirements of the state for the surface environment of the mining area.

[0003] The filling retaining wall is an indispensable process link in the filling mining method, which can prevent the filling slurry from leaking, avoid accidents such as goaf collapse and rock burst, protect underground personnel and equipment, block heavy metals and harmful substances in the tailings and cementing materials, and prevent pollution of underground water sources and soil. Generally speaking, filling operation accounts for 20% to 30% of the total mining cost, high-performance retaining wall can shorten the maintenance period by 50%, reduce the maintenance frequency and cost.

[0004] At present, the main retaining wall methods mainly used are assembly type retaining wall, water-permeable retaining wall, gravity type retaining wall, cantilever type retaining wall and the like, which have many defects. For example, the water-permeable plate of part of the water-permeable retaining wall is easy to be blocked by silt, the long-term water permeability decreases, and the insufficient self-weight of the retaining wall may affect the lateral pressure resistance, and it is easy to crack due to internal water pressure accumulation; the precast block connection of the assembly type retaining wall depends on mortise and tenon or water-permeable plate, which requires high construction precision, and if the terrain is complex, it may lead to loose splicing and additional reinforcement; the water permeability of the single high-strength material retaining wall is poor, and the bearing capacity of the water-permeable structure is insufficient, thereby affecting the normal filling and mining operation in the mine. UTILITY MODEL CONTENTS

[0005] In view of the problems in the background art, the purpose of the utility model is to provide a composite water-permeable gravity type filling retaining wall which is simple to construct and has strong adaptability, so as to solve the balance problem of water permeability and bearing strength.

[0006] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0007] A composite water-permeable gravity type filling retaining wall, comprising gravity type retaining walls arranged on both sides of a filling body, the height of the gravity type retaining wall being greater than the height of the filling body;

[0008] Further comprising a plurality of water filtering units arranged above the filling body and between the gravity type retaining walls;

[0009] The water filtering unit comprises a water filtering film, a grid framework, a water collecting pipe and a drainage pipe, the grid framework, the water collecting pipe and the drainage pipe are sequentially arranged from top to bottom, the grid framework and the water collecting pipe are fixedly connected and play a role of space occupation and shape supporting, the water filtering film is arranged on the outer surfaces of the grid framework and the water collecting pipe, a plurality of water collecting holes are uniformly arranged on the wall of the water collecting pipe, the water collecting pipe is communicated with the drainage pipe, and the drainage pipe penetrates through the whole composite water-permeable gravity type filling retaining wall and is used for draining the filtered water collected by the water filtering unit.

[0010] The above technical scheme has the beneficial effects that the water filtering film, the grid framework and the water collecting pipe form a water seepage and pressure relief area between the gravity type retaining wall and the filling area, the water filtering potential energy is dissipated, thereby reducing the seepage potential energy of the filling slurry, effectively reducing the acting force of the filling slurry on the filling retaining wall, improving the safety of the filling retaining wall, reducing the structural design strength of the filling retaining wall and reducing the comprehensive filling cost.

[0011] As a further improvement of the above scheme, the grid framework comprises a horizontal rib and a vertical rib, the horizontal rib and the vertical rib are fixedly connected perpendicularly, and the bottom end of the vertical rib is fixedly connected with the water collecting pipe.

[0012] As a further improvement of the above scheme, a water outlet pipe is arranged between the water collecting pipe and the drainage pipe, the water outlet pipe is fixedly arranged at the bottom of the water collecting pipe, filtered water enters the water outlet pipe through the water collecting pipe and then enters the drainage pipe.

[0013] As a further improvement of the above scheme, the water outlet pipe is connected with the drainage pipe through a pipeline connection device, the drainage pipe is connected with a drainage device outside the gravity type retaining wall and is used for draining the filtered water outside the gravity type retaining wall.

[0014] As a further improvement of the above scheme, the pipeline connection device is a pipeline joint.

[0015] As a further improvement of the above scheme, the drainage pipe is a PVC pipe.

[0016] As a further improvement of the above scheme, the gravity type retaining wall is composed of concrete, reinforcing steel and round steel.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] (1) Balance between bearing strength and water permeability of filling retaining wall

[0019] The composite water-permeable gravity type filling retaining wall adopts adjustable retaining wall size and structure, is supplemented by an efficient water filtering network and a drainage system penetrating through the retaining wall, effectively solves the contradiction between poor water permeability and insufficient bearing capacity of the water permeable structure of the conventional concrete retaining wall, and realizes the performance of high strength and strong water permeability of the filling retaining wall.

[0020] (2) Adapt to various complex working conditions

[0021] Composite permeable gravity backfill retaining walls can be adjusted according to the size of the backfilling site and the amount of water seepage from the backfill slurry. By changing the bottom width, thickness, spacing, and the number and position of the filter units, the load-bearing strength of the backfill retaining wall and the water filtration efficiency of the backfill slurry can be effectively improved, and the dehydration and solidification process can be accelerated. Attached Figure Description

[0022] Figure 1 It is a composite permeable gravity-filled retaining wall.

[0023] Figure 2 for Figure 1 A schematic diagram of the AA cross section.

[0024] Figure 3 for Figure 1 A schematic diagram of the BB cross-section.

[0025] Figure 4 for Figure 3 A schematic diagram of the CC cross-section.

[0026] In the picture:

[0027] 1. Gravity retaining wall; 101. Concrete; 102. Reinforcing steel; 103. Round steel;

[0028] 2. Filling body;

[0029] 3. Filter unit; 301. Filter membrane; 302. Grille frame; 302-1. Transverse ribs; 302-2. Longitudinal ribs; 303. Water collection pipe; 304. Drain pipe; 305. Water outlet pipe; 306. Pipe connection device;

[0030] 4. Drainage device. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution, the present invention will be described in detail below with reference to the embodiments. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0032] like Figures 1-4 As shown, this utility model provides a composite permeable gravity filling retaining wall, including gravity retaining walls 1 disposed on both sides of the filling body, the height of the gravity retaining walls 1 being greater than the height of the filling body 2.

[0033] It also includes a water filtration unit 3, which is located above the filling body 2 and between the gravity retaining walls 1;

[0034] The water filtering unit 3 comprises a water filtering film 301, a grid framework 302, a water collecting pipe 303 and a drainage pipe 304, and the grid framework 302, the water collecting pipe 303 and the drainage pipe 304 are sequentially arranged from top to bottom; the grid framework 302 and the water collecting pipe 303 are fixedly connected and play a role of space occupation and shape supporting; the water filtering film 301 is arranged on the outer surfaces of the grid framework 302 and the water collecting pipe 303; a plurality of water collecting holes 303-1 are uniformly arranged on the wall of the water collecting pipe 303, the water collecting pipe 303 is communicated with the drainage pipe 304, and the drainage pipe 304 penetrates through the whole composite water-permeable gravity type filling retaining wall and is used for draining the filtered water collected by the water filtering unit 3.

[0035] In the embodiment, the grid framework 302 comprises a transverse rib 302-1 and a longitudinal rib 302-2, the transverse rib 302-1 and the longitudinal rib 302-2 are fixedly connected vertically, and the bottom end of the longitudinal rib 302-2 is fixedly connected with the water collecting pipe 303.

[0036] In the embodiment, a water outlet pipe 305 is arranged between the water collecting pipe 303 and the drainage pipe 304, and the water outlet pipe 305 is fixedly arranged at the bottom of the water collecting pipe 303.

[0037] In the embodiment, the outlet of the water outlet pipe 305 is connected with the drainage pipe 304 through a pipeline connecting device 306, the drainage pipe 304 is connected with a drainage device 4 outside the gravity type retaining wall, and is used for draining the filtered water to the outside of the gravity type retaining wall.

[0038] Specifically, the pipeline connecting device 306 is preferably a pipeline joint.

[0039] In the embodiment, the drainage pipe 304 is a PVC pipe.

[0040] In the embodiment, the number of the water filtering units 3 is eight, and the water filtering units 3 are arranged side by side above the drainage pipe 304 and between the two gravity type retaining walls 1.

[0041] In the embodiment, the gravity type retaining wall 1 is composed of concrete 101, steel bars 102 and round steels 103, which is a conventional technology in the field.

[0042] In the embodiment, the wall body of the gravity type retaining wall 1 is in a trapezoidal shape, two layers of steel bars 102 are arranged in the gravity type retaining wall, and C25 concrete 101 is used for integral casting forming.

[0043] The round steels 103 are arranged on the roof and both sides of the roadway and are fixed with the steel bars 102 in the retaining wall, and the round steels 103 are exposed outwardly and penetrate into the rock mass; the width, thickness and spacing of the top and bottom of the gravity type retaining wall can be adjusted according to the size of the stope structure to meet the supporting and plugging effects of the filling slurry.

[0044] The working principle of the utility model is as follows:

[0045] The water filtering film only allows water to pass through but not solid aggregates, water is filtered from the grid skeleton in the water filtering film to the water collecting pipe, a plurality of water collecting holes are uniformly distributed on the wall of the water collecting pipe, water flows into the water outlet pipe fixed below the water filtering film through the water collecting holes, the outlet of the water outlet pipe is connected with the drainage pipe penetrating the retaining wall through the pipeline connection device, and is discharged to the outside of the wall, and then is discharged outside the well through the drainage device.

[0046] The high-strength support of the gravity type retaining wall and the high-efficiency water permeation and drainage of the water filtering unit are cooperated, the balance of high bearing capacity, strong water permeability, adaptability and economy of the filling retaining wall in the complex mine environment is realized, and an innovative solution is provided for the underground filling operation of the metal mine.

[0047] It should be noted that in this paper, the terms: including, containing and any other variants are intended to cover non-exclusive containing, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. In this paper, specific examples are applied to describe the principles and implementation modes of the technical scheme of the utility model, and the above examples are only used to help understand the method and core idea of the utility model. The above is only the preferred embodiment of the utility model, it should be pointed out that due to the limited expression of language, there are infinite specific structures objectively, for ordinary technical personnel in this technical field, without departing from the principle of the utility model, a number of improvements, decorations or changes can be made, or the above technical features can be combined in a proper way, these improvements, decorations, changes or combinations, or the concept and technical scheme of the utility model are directly applied to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A composite type water-permeable gravity type filling retaining wall, characterized by, The application relates to a gravity retaining wall (1) provided on both sides of a filling body (2), wherein the height of the gravity retaining wall (1) is greater than that of the filling body (2). The application further comprises a plurality of water filtering units (3) provided above the filling body (2) and between the gravity retaining walls (1). The water filtering unit (3) comprises a water filtering film (301), a grid framework (302), a water collecting pipe (303) and a drainage pipe (304), wherein the grid framework (302), the water collecting pipe (303) and the drainage pipe (304) are sequentially arranged from top to bottom; the grid framework (302) and the water collecting pipe (303) are fixedly connected and play the roles of space occupation and shape supporting; the water filtering film (301) is arranged on the outer surfaces of the grid framework (302) and the water collecting pipe (303); a plurality of water collecting holes (303-1) are uniformly arranged on the wall of the water collecting pipe (303); the water collecting pipe (303) is communicated with the drainage pipe (304); and the drainage pipe (304) penetrates through the whole retaining wall and is used for draining the filtered water collected by the water filtering unit (3).

2. The composite type water-permeable gravity type filling retaining wall according to claim 1, wherein The grid framework comprises a horizontal rib (302-1) and a vertical rib (302-2), wherein the horizontal rib (302-1) and the vertical rib (302-2) are fixedly connected vertically; and the bottom end of the vertical rib (302-2) is fixedly connected with the water collecting pipe (303).

3. The composite type water-permeable gravity type filling retaining wall according to claim 1, wherein A water outlet pipe (305) is arranged between the water collecting pipe (303) and the drainage pipe (304) and is fixedly arranged at the bottom of the water collecting pipe (303).

4. The composite type water-permeable gravity type filling retaining wall according to claim 3, wherein The water outlet pipe (305) is connected with the drainage pipe (304) through a pipeline connecting device (306); the drainage pipe (304) is connected with a drainage device (4) outside the gravity retaining wall and is used for draining the filtered water outside the gravity retaining wall.

5. The composite type water-permeable gravity type filling retaining wall according to claim 4, wherein The drainage pipe (304) is a PVC pipe.

6. The composite type water-permeable gravity type filling retaining wall according to claim 1, wherein The gravity retaining wall (1) is composed of concrete (101), reinforcing steel bars (102) and round steel (103).

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