Structure and method for combining arid region waste slag yard blocking and drainage

Abstract

The invention relates to the technical field of engineering construction, in particular to a structure and method for combining arid area waste slag yard blocking and drainage. The structure comprises a wall body locally buried underground and a retaining wall arranged on the slag back side of the wall body, the side, facing slag stacking materials, of the wall body is of a slope surface structure, the bottom end of the retaining wall is fixed to the slag back side of the wall body, and the top end of the retaining wall extends upwards to be flush with the ground, so that a drainage ditch is defined by the interior of the retaining wall and the slag back side of the wall body; rainwater is collected and stored through the water storage cavity, and sediment is destroyed through the combination of the upper water drainage opening in the high position and the lower water drainage opening in the low position. The upper water outlet destroys sediment by means of instantaneous large-flow rainwater generated by the siphonic effect, and the lower water outlet further washes the sediment by means of rainwater stored in the water storage cavity, so that the overall shape of the sediment is changed, the sediment can be washed by the rainwater in the drainage ditch in the flowing process, and the drainage effect of the drainage ditch is improved. The cleaning frequency of the drainage ditch is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of engineering construction, and in particular to a structure and method for combining blocking and drainage of a waste dump in an arid area. Background Art

[0002] A slag dump usually refers to a site used to store waste, especially waste slag and waste soil generated during engineering construction or mineral mining. For example, in tunnel excavation, mining or construction sites, a large amount of slag and gravel that cannot be reused will be generated, which requires a special site to handle and store. During the storage process, a slag retaining wall is generally used to maintain the stability of the slag dump. A slag retaining wall refers to a wall structure set downstream of a slag dump or spoil dump. The slag retaining wall is used to block waste washed by rainwater and play a role in protecting the safety of the downstream.

[0003] In the arid northwest region, due to the low rainfall, the drainage demand of the waste dump is low, so the slag retaining wall and the drainage ditch can be combined to achieve the purpose of reducing the occupied area. However, in order to meet the drainage requirements of the ground, the height of the drainage ditch is usually flush with the ground, which makes the sand on the ground easily affected by wind and rain and enters the drainage ditch and accumulates. Due to the low rainfall in arid areas, the sand in the drainage ditch accumulates too quickly. Therefore, when there is a concentrated period of seasonal heavy rain (usually from June to August), it is difficult for rainwater to wash away the accumulated sand in the drainage ditch, and the cleaning frequency of the drainage ditch needs to be accelerated. Summary of the invention

[0004] The object of the present invention is to provide a structure and method for combining blocking and drainage of waste dumps in arid areas, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, one of the purposes of the present invention is to provide a structure for combining blocking and drainage of waste dumps in arid areas, comprising a wall partially buried underground, and a retaining wall arranged on the back slag side of the wall, the side of the wall facing the slag material is a slope structure, the bottom end of the retaining wall is fixed on the back slag side of the wall, and the top end extends upward to be flush with the ground, so that the interior of the retaining wall and the back slag side of the wall are enclosed to form a drainage ditch;

[0006] The wall is provided with a water storage cavity inside, and the slag back side is provided with an upper drainage port and a lower drainage port connected with the water storage cavity; wherein the lower drainage port is located at the bottom of the drainage ditch; the slope of the wall is connected with the water storage cavity, and rainwater in the slag pile is guided into the water storage cavity through the slope, and then discharged into the drainage ditch through the lower drainage port;

[0007] When the sediment in the drainage ditch blocks the lower drain outlet, rainwater is accumulated in the water storage chamber, forcing the siphon to use the siphon effect to discharge the rainwater in the water storage chamber through the upper drain outlet to the vicinity of the lower drain outlet, so as to dredge the lower drain outlet, and further force the rainwater accumulated in the water storage chamber to be discharged through the lower drain outlet under the action of gravity, flushing the sediment and forming a scouring ditch locally on the sediment.

[0008] As a further improvement of the technical solution, a blind ditch is provided at the bottom of the slag pile, and a plurality of water seepage openings are provided at the slope of the wall, one end of which penetrates the slope and the other end is connected to the water storage cavity. The plurality of water seepage openings correspond to the blind ditch, the interior of the slag pile and the slope of the slag pile, respectively, and are used to guide rainwater on the slope of the slag pile, rainwater inside the slag pile, and rainwater at the bottom into the water storage cavity;

[0009] A first filter layer is arranged on the slope surface of the wall.

[0010] As a further improvement of the technical solution, the first filter layer includes a crushed stone layer arranged on the slope of the wall, and a geotextile arranged on a side of the crushed stone layer close to the slag pile.

[0011] As a further improvement of the present technical solution, the upper drain outlet is located directly above the lower drain outlet, and is inclined with one end close to the water storage chamber being higher and the other end being lower; the high end of the upper drain outlet is connected to the siphon pipe, and the low end passes through the side wall of the wall and then bends downward, so that the siphon pipe and the upper drain outlet together form an inverted "U"-shaped structure.

[0012] As a further improvement of the technical solution, a water inlet and a barrier are provided on the top of the wall, one end of the water inlet passes through the top of the wall, and the other end is connected to the water storage chamber, and a second filter layer is provided on the top of the water inlet.

[0013] As a further improvement of the technical solution, an air inlet is provided on the outer ring of the upper middle part of the siphon tube, a flow sensing mechanism is provided at the bottom end of the siphon tube, and the bottom end of the siphon tube extends above the lower drain outlet, so that the flow sensing mechanism is provided close to the lower drain outlet;

[0014] When the lower drain outlet is blocked by sediment, the flow sensing mechanism blocks the air inlet to maintain the siphon effect. When the lower drain outlet is not blocked by sediment, the flow sensing mechanism opens the air inlet to destroy the siphon effect.

[0015] As a further improvement of the technical solution, the flow sensing mechanism includes a water blocking plate located at the bottom end of the siphon tube, and a retaining ring longitudinally slidably sleeved on the outer ring of the siphon tube, a connecting rod is provided between the retaining ring and the water blocking plate to fix the two, and the density of the water blocking plate is greater than the density of rainwater;

[0016] The bottom end of the siphon tube is provided with a through opening, and the diameter of the water blocking plate is larger than the diameter of the through opening.

[0017] As a further improvement of the technical solution, the portion of the water blocking plate that is larger than the through opening forms a water blocking portion, so that when rainwater flows toward the drain outlet, the impact force of rainwater is used to drive the water blocking plate to move downward.

[0018] The second object of the present invention is to provide a method for a structure combining blocking and drainage of waste dumps in arid areas, comprising the following method steps:

[0019] S1, rainwater on the slag pile slope, rainwater inside, and rainwater at the bottom all flow into the water storage cavity through the corresponding seepage ports;

[0020] S2. When the sediment blocks the lower drain outlet, the rainwater is forced to accumulate in the water storage chamber, so that the rainwater is discharged through the upper drain outlet to produce a siphon effect. The instantaneous large flow of rainwater generated by the siphon effect is used to flush the sediment around the lower drain outlet under the action of the height difference, thereby flushing away the sediment around the lower drain outlet;

[0021] S3. After the lower drain outlet is opened, the remaining rainwater in the water storage chamber is discharged through the lower drain outlet. The rainwater accumulated in the water storage chamber is utilized to force the rainwater to generate a stronger impact force when it is discharged from the lower drain outlet, and the sediment is locally formed into a scouring ditch.

[0022] S4. Rainwater flowing in the drainage ditch scours the ditch by impact to reduce the accumulation of sediment.

[0023] As a further improvement of this technical solution, the following method steps are included:

[0024] S5. At the moment when the lower drain outlet is unblocked, the rainwater in the water storage chamber is quickly discharged through the lower drain outlet, and during the discharge process, the water blocking plate is pushed to move downward, so that the air inlet is opened, thereby terminating the siphon effect and increasing the impact force of the rainwater when it is discharged from the lower drain outlet.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. In the structure and method for combining interception and drainage of waste dumps in arid areas, during the concentrated period of seasonal rainstorms, rainwater is collected and stored through the water storage cavity, and the sediment is destroyed by combining the upper drainage outlet at a high place and the lower drainage outlet at a low place. The upper drainage outlet uses the instantaneous large flow of rainwater generated by the siphon effect to destroy the sediment, and the lower drainage outlet uses the rainwater collected in the water storage cavity to further flush the sediment, thereby changing the overall shape of the sediment, so that the rainwater in the drainage ditch can flush the sediment during the flow process, so as to reduce the height of the sediment and reduce the frequency of cleaning the drainage ditch.

[0027] 2. In the structure and method for combining interception and drainage of waste dumps in arid areas, a flow sensing mechanism is provided to control the siphon according to the drainage flow of the lower drainage outlet. Thus, during the siphon process, the sediment around the lower drainage outlet is flushed by utilizing the instantaneous large flow of rainwater under the effect of the height difference. After the lower drainage outlet is unblocked, the siphon is terminated in time to avoid unnecessary discharge of rainwater, increase the capacity of rainwater in the water storage chamber, and increase the impact force of rainwater when discharged from the lower drainage outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the cross-sectional structure of the wall of the present invention;

[0030] Figure 3 It is a schematic structural diagram of the siphon tube of the present invention;

[0031] Figure 4 It is a schematic diagram of the working state of the water blocking plate of the present invention;

[0032] Figure 5 The state of the scouring ditch of the present invention is shown in FIG. Figure 1 ;

[0033] Figure 6 The state of the scouring ditch of the present invention is shown in FIG. Figure 2 ;

[0034] Figure 7 It is a schematic structural diagram of the support member of the present invention.

[0035] The meaning of each number in the figure is:

[0036] 100. Wall; 101. First filter layer; 102. Blind ditch; 110. Retaining wall; 111. Drainage ditch; 120. Water storage chamber; 121. Seepage outlet; 122. Upper drainage outlet; 123. Lower drainage outlet; 130. Siphon; 131. Through port; 132. Retaining ring; 133. Air inlet; 134. Water blocking plate; 140. Enclosure; 141. Water inlet; 142. Second filter layer; 150. Support member; 151. Side plate; 200. Slag material; 210. Sediment; 211. Scour ditch. DETAILED DESCRIPTION

[0037] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] One of the purposes of the present invention is to provide a structure combining blocking and drainage for waste dumps in arid areas, such as Figure 1 As shown, it includes a wall 100 partially buried underground, and a retaining wall 110 arranged on the back slag side of the wall 100 (i.e., the side away from the slag material 200). The side of the wall 100 facing the slag material 200 is a slope structure, so that the bottom width of the wall 100 is greater than the top width. The bottom end of the retaining wall 110 is fixed to the back slag side of the wall 100, and the top extends to the upper right to be flush with the ground. At this time, the interior of the retaining wall 110 and the back slag side of the wall 100 are enclosed to form a drainage ditch 111.

[0041] When it rains, since the top of the retaining wall 110 is flush with the ground, rainwater on the ground can flow into the drainage ditch 111, and the rainwater will drive sand and soil into the drainage ditch 111. When it is windy, the sand and soil on the ground will also be blown into the drainage ditch 111. The sand and soil that enter the drainage ditch 111 will eventually accumulate in the drainage ditch 111 to form sediment 210.

[0042] To this end, combined Figure 2 and Figure 5A water storage chamber 120 is arranged inside the wall 100, and an upper drain port 122 and a lower drain port 123 which are connected to the water storage chamber 120 are arranged on the back slag side of the wall 100, wherein the lower drain port 123 is located at the bottom of the drainage ditch 111, and the lower drain port 123 is an inclined structure with one end close to the drainage ditch 111 being low and the other end being high, so as to prevent external impurities from entering the water storage chamber 120. The slope of the wall 100 is connected to the water storage chamber 120, and the rainwater in the slag material 200 is guided into the water storage chamber 120 through the slope, and discharged into the drainage ditch 111 through the lower drainage port 123; when the sediment 210 in the drainage ditch 111 blocks the lower drainage port 123, the rainwater is accumulated in the water storage chamber 120, forcing the siphon tube 130 to use the siphon effect to discharge the rainwater in the water storage chamber 120 through the upper drainage port 122 to the vicinity of the lower drainage port 123, so as to dredge the lower drainage port 123, and further force the rainwater accumulated in the water storage chamber 120 to be discharged through the lower drainage port 123 under the action of gravity, flushing the sediment 210 and forming a flushing ditch 211 in part of the sediment 210.

[0043] When implementing it, Figure 7 As shown, the support member 150 is placed in the mold for pouring the wall 100. After the wall 100 solidifies, a water storage chamber 120 is formed inside the wall 100. To seal the ends of the water storage chamber 120, side plates 151 are provided at both ends of the support member 150. In addition, air holes can be provided on the side plates 151 to adjust the internal air pressure of the water storage chamber 120.

[0044] like Figure 1 and Figure 2 As shown, a blind ditch 102 is provided at the bottom of the slag pile 200, and a plurality of seepage ports 121 are provided at the slope of the wall 100, one end of which penetrates the slope and the other end is connected to the water storage chamber 120. The plurality of seepage ports 121 correspond to the blind ditch 102, the interior of the slag pile 200, and the slope of the slag pile 200, respectively, and are used to guide rainwater on the slope of the slag pile 200, rainwater inside the slag pile, and rainwater at the bottom into the water storage chamber 120. In addition, in order to prevent sand and soil from flowing into the water storage chamber 120 through the seepage ports 121, resulting in water and soil outflow from the slag pile 200, the present invention also provides a first filter layer 101 at the slope of the wall 100, and the first filter layer 101 is mainly composed of a crushed stone layer and a geotextile. The crushed stone layer is provided at the slope of the wall 100, and the geotextile is provided on the side of the crushed stone layer close to the slag pile 200.

[0045] like Figure 2 and Figure 3As shown, the upper drain port 122 is in an inclined state with one end near the water storage chamber 120 being high and the other end being low. The upper end of the upper drain port 122 is connected to the siphon 130, and the lower end passes through the side wall of the wall 100 and then bends downward, so that the siphon 130 and the upper drain port 122 together form an inverted "U"-shaped structure. In addition, the upper drain port 122 is located directly above the lower drain port 123.

[0046] When it rains, rainwater on the slope of the slag pile 200, rainwater inside the slag pile 200, and rainwater at the bottom all flow into the water storage chamber 120 through the corresponding seepage ports 121. Due to the obstruction of the first filter layer 101, the sand in the slag pile 200 does not enter the water storage chamber 120. When the thickness of the sediment 210 in the drainage ditch 111 is lower than the height of the lower drainage port 123, the lower drainage port 123 is not blocked by the sediment 210, and the rainwater in the water storage chamber 120 is discharged into the drainage ditch 111 through the lower drainage port 123. When the thickness of the sediment 210 in the drainage ditch 111 is higher than the height of the lower drainage outlet 123, the sediment 210 blocks the lower drainage outlet 123, reducing the drainage flow of the lower drainage outlet 123, causing part of the rainwater to remain in the water storage chamber 120 and unable to be discharged. At this time, the rainwater accumulates in the water storage chamber 120. As the water level continues to rise, when the height of the rainwater is higher than the top height of the siphon tube 130, the rainwater is discharged through the upper drainage outlet 122, and a siphon effect is generated during the discharge process, thereby sucking out the rainwater in the water storage chamber 120, forming an instantaneous large flow rate, and using the instantaneous large flow rate of rainwater and the height difference to flush the sediment 210 around the lower drainage outlet 123, thereby flushing away the sediment 210 around the lower drainage outlet 123. At this time, the lower drain port 123 is opened, and the remaining rainwater in the water storage chamber 120 is discharged through the lower drain port 123. Since a large amount of rainwater is accumulated in the water storage chamber 120, a strong impact force is generated when the rainwater is discharged from the lower drain port 123, and a scouring ditch 211 is formed locally in the sediment 210.

[0047] Then, if Figure 5 and Figure 6 As shown, when the scouring ditch 211 is formed locally in the slag material 200, the rainwater in the drainage ditch 111 will scour the high part of the sediment 210 during the flow process. Figure 6 The hollow dashed arrows and solid dashed arrows in FIG. When rainwater flows to the hollow dashed arrows, the downhill rainwater washes the downhill surface of the sediment 210 and takes away some of the sand on the downhill surface of the sediment 210; when rainwater flows to the solid dashed arrows, the uphill rainwater washes the uphill surface of the sediment 210 and takes away some of the sand on the uphill surface of the sediment 210. In this way, the height of the sediment 210 accumulation can be reduced by continuous rainwater flow, and the frequency of cleaning the drainage ditch 111 can be reduced.

[0048] In summary, during the concentrated period of seasonal rainstorms, rainwater is collected by the water storage chamber 120, and the sediment 210 is destroyed by combining the upper drainage port 122 at a high position and the lower drainage port 123 at a low position. The upper drainage port 122 uses the instantaneous large flow of rainwater generated by the siphon effect to destroy the sediment 210, and the lower drainage port 123 uses the rainwater collected in the water storage chamber 120 to further flush the sediment 210, thereby changing the overall shape of the sediment 210, so that the rainwater in the drainage ditch 111 can flush the sediment 210 during the flow process, so as to reduce the height of the sediment 210 and reduce the cleaning frequency of the drainage ditch 111.

[0049] To increase the speed of collecting rainwater in the slag pile 200. Figure 2 As shown, the present invention also provides a water inlet 141 at the top of the wall 100, one end of the water inlet 141 passes through the top of the wall 100, and the other end is connected to the water storage chamber 120. At the same time, in order to prevent impurities from entering the water storage chamber 120, a second filter layer 142 is also provided at the top of the wall 100. The structure of the second filter layer 142 is the same as that of the first filter layer 101, which will not be described in detail here. In addition, a fence 140 formed by four baffles is also provided at the top of the wall 100, which is used to guide rainwater on the top of the wall 100 to the water inlet 141. In this way, after rainwater falls into the top of the wall 100, it is blocked by the fence 140, and then after being filtered by the second filter layer 142, it enters the water storage chamber 120 through the water inlet 141, thereby accelerating the collection speed of rainwater and increasing the speed of forming the siphon effect.

[0050] Furthermore, in order to improve the formation efficiency of the scouring groove 211. Figure 2 and Figure 3 As shown, an air inlet 133 is provided on the outer circle of the upper part of the siphon tube 130, a flow sensing mechanism is provided at the bottom end of the siphon tube 130, and the bottom end of the siphon tube 130 extends to above the lower drain outlet 123, so that the flow sensing mechanism is arranged close to the lower drain outlet 123; when the lower drain outlet 123 is blocked by the sediment 210, the flow sensing mechanism blocks the air inlet 133 to maintain the siphon effect, and when the lower drain outlet 123 is not blocked by the sediment 210, the flow sensing mechanism opens the air inlet 133 to destroy the siphon effect.

[0051] Specifically, Figure 3As shown, the flow sensing mechanism includes a water blocking plate 134 located at the bottom end of the siphon tube 130, and a retaining ring 132 longitudinally slidably sleeved on the outer ring of the siphon tube 130, a connecting rod is provided between the retaining ring 132 and the water blocking plate 134 to fix the two, and the density of the water blocking plate 134 is greater than the density of rainwater, so that the water blocking plate 134 can float. At the same time, a through hole 131 is provided at the bottom end of the siphon tube 130. The diameter of the water blocking plate 134 is greater than the diameter of the through hole 131, and the part of the water blocking plate 134 that is larger than the through hole 131 forms a water blocking portion, so that when the rainwater flows toward the drain outlet 123, the impact force of the rainwater is used to drive the water blocking plate 134 to move downward.

[0052] Specific working principle combined Figure 4 As shown. When the lower drain outlet 123 is blocked, the water level in the water storage chamber 120 begins to rise. When the rainwater contacts the water blocking plate 134, the water blocking plate 134 floats on the water surface and moves upward with the rise of the water level. The upward movement of the water blocking plate 134 drives the baffle ring 132 to move upward. After the baffle ring 132 moves upward, it blocks the air inlet 133. Then, when the water level is higher than the top of the siphon 130, the siphon effect occurs. The siphon 130 sucks the rainwater in the water storage chamber 120 through the opening 131 and then discharges it through the upper drain outlet 122. When the rainwater discharged through the upper drain outlet 122 flushes away the sediment 210 around the lower drain outlet 123, the lower drain outlet 123 is unblocked.

[0053] When the lower drain port 123 is unblocked, the water in the water storage chamber 120 will be quickly discharged through the lower drain port 123. At this time, since the diameter of the water blocking plate 134 is larger than the diameter of the through port 131, the rainwater will push the water blocking portion of the outer circle of the water blocking plate 134 when flowing to the lower drain port 123 (refer to Figure 4 The water blocking plate 134 moves downward, and the water blocking plate 134 moves downward, and the baffle ring 132 moves downward, and the baffle ring 132 moves downward to open the air inlet 133. After the air inlet 133 is opened, air enters the siphon tube 130 through the air inlet 133, thereby destroying the negative pressure environment in the siphon tube 130, and the siphon stops at this time. It prevents more rainwater from being discharged through the upper drain port 122, and increases the impact force when the rainwater is discharged from the lower drain port 123.

[0054] That is to say, by setting up a flow sensing mechanism to control the siphon according to the drainage flow of the lower drain outlet 123, during the siphon process, the instantaneous large flow of rainwater is used to flush the sediment 210 around the lower drain outlet 123 under the action of the height difference. After the lower drain outlet 123 is unblocked, the siphon is terminated in time to avoid unnecessary discharge of rainwater, increase the capacity of rainwater in the water storage chamber 120, and increase the impact force of rainwater when discharged from the lower drain outlet 123.

[0055] The second object of the present invention is to provide a method for a structure combining blocking and drainage of waste dumps in arid areas, comprising the following method steps:

[0056] S1, rainwater on the slope of the slag pile 200, rainwater inside, and rainwater at the bottom all flow into the water storage chamber 120 through the corresponding seepage ports 121;

[0057] S2. When the sediment 210 blocks the lower drain outlet 123, the rainwater is forced to accumulate in the water storage chamber 120, so that the rainwater is discharged through the upper drain outlet 122 to generate a siphon effect. The instantaneous large flow of rainwater generated by the siphon effect is used to flush the sediment 210 around the lower drain outlet 123 under the action of the height difference, thereby flushing away the sediment 210 around the lower drain outlet 123;

[0058] S3. After the lower drain port 123 is opened, the remaining rainwater in the water storage chamber 120 is discharged through the lower drain port 123. The rainwater accumulated in the water storage chamber 120 is used to force the rainwater to generate a stronger impact force when being discharged from the lower drain port 123, and the sediment 210 is partially formed into a scouring ditch 211.

[0059] S4. Rainwater flowing in the drainage ditch 111 impacts the scouring ditch 211 to reduce the accumulation of sediment 210.

[0060] In addition, the following method steps are included:

[0061] S5. At the moment when the lower drain outlet 123 is unblocked, the rainwater in the water storage chamber 120 is quickly discharged through the lower drain outlet 123, and in the process of discharge, the water blocking plate 134 is pushed to drive the water blocking plate 134 to move downward, so that the air inlet 133 is opened, thereby terminating the siphon effect and increasing the impact force of the rainwater when it is discharged from the lower drain outlet 123.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A structure combining blocking and drainage for waste dumps in arid areas, characterized in that: It comprises a wall (100) partially buried underground, and a retaining wall (110) arranged on the slag back side of the wall (100), wherein the side of the wall (100) facing the slag pile (200) is a slope structure, the bottom end of the retaining wall (110) is fixed to the slag back side of the wall (100), and the top end extends upward to be flush with the ground, so that the interior of the retaining wall (110) and the slag back side of the wall (100) are enclosed to form a drainage ditch (111); A water storage chamber (120) is provided inside the wall (100), and an upper drainage port (122) and a lower drainage port (123) in communication with the water storage chamber (120) are provided on the slag back side; wherein the lower drainage port (123) is located at the bottom of the drainage ditch (111); the slope of the wall (100) is in communication with the water storage chamber (120), and rainwater in the slag pile (200) is guided into the water storage chamber (120) through the slope, and then discharged into the drainage ditch (111) through the lower drainage port (123); When the sediment (210) in the drainage ditch (111) blocks the lower drainage outlet (123), rainwater is accumulated in the water storage chamber (120), forcing the siphon tube (130) to discharge the rainwater in the water storage chamber (120) through the upper drainage outlet (122) to the vicinity of the lower drainage outlet (123) by means of siphon action, thereby clearing the lower drainage outlet (123) and further forcing the rainwater accumulated in the water storage chamber (120) to be discharged through the lower drainage outlet (123) under the action of gravity, thereby flushing the sediment (210) and forming a flushing ditch (211) on a part of the sediment (210).

2. The structure for combining blocking and drainage of waste dumps in arid areas according to claim 1 is characterized in that: A blind ditch (102) is provided at the bottom of the slag pile (200), and a plurality of water seepage openings (121) are provided at the slope of the wall (100), one end of the water seepage openings penetrating the slope and the other end of the water seepage openings (121) being connected to the water storage chamber (120). The plurality of water seepage openings (121) correspond to the blind ditch (102), the interior of the slag pile (200), and the slope of the slag pile (200), respectively, and are used to guide rainwater on the slope of the slag pile (200), rainwater inside the slag pile, and rainwater at the bottom into the water storage chamber (120); A first filter layer (101) is provided on the slope surface of the wall (100).

3. The structure for combining blocking and drainage of waste dumps in arid areas according to claim 2 is characterized in that: The first filter layer (101) comprises a crushed stone layer arranged on the slope surface of the wall (100), and a geotextile arranged on a side of the crushed stone layer close to the slag pile (200).

4. The structure for combining blocking and drainage of waste dumps in arid areas according to claim 1 is characterized in that: The upper drain outlet (122) is located directly above the lower drain outlet (123) and is inclined with one end close to the water storage chamber (120) being higher and the other end being lower; the upper end of the upper drain outlet (122) is connected to the siphon tube (130), and the lower end passes through the side wall of the wall (100) and then bends downward, so that the siphon tube (130) and the upper drain outlet (122) together form an inverted "U"-shaped structure.

5. The structure combining blocking and drainage for waste dump in arid areas according to claim 1 is characterized in that: A water inlet (141) and a baffle (140) are provided at the top of the wall (100); one end of the water inlet (141) passes through the top of the wall (100), and the other end is connected to the water storage chamber (120); a second filter layer (142) is provided at the top of the water inlet (141).

6. The structure for combining blocking and drainage of waste dumps in arid areas according to claim 1 is characterized in that: An air inlet (133) is arranged on the outer ring of the upper middle part of the siphon tube (130), a flow sensing mechanism is arranged at the bottom end of the siphon tube (130), and the bottom end of the siphon tube (130) extends above the lower drain outlet (123), so that the flow sensing mechanism is arranged close to the lower drain outlet (123); When the lower drain outlet (123) is blocked by sediment (210), the flow sensing mechanism blocks the air inlet (133) to maintain the siphon effect; when the lower drain outlet (123) is not blocked by sediment (210), the flow sensing mechanism opens the air inlet (133) to destroy the siphon effect.

7. The structure for combining blocking and drainage of waste dumps in arid areas according to claim 6 is characterized in that: The flow sensing mechanism comprises a water blocking plate (134) located at the bottom end of the siphon tube (130), and a retaining ring (132) longitudinally slidably sleeved on the outer ring of the siphon tube (130), a connecting rod is provided between the retaining ring (132) and the water blocking plate (134) to fix the two, and the density of the water blocking plate (134) is greater than the density of rainwater; The bottom end of the siphon tube (130) is provided with a through opening (131), and the diameter of the water blocking plate (134) is larger than the diameter of the through opening (131).

8. The structure for combining blocking and drainage of waste dumps in arid areas according to claim 7 is characterized in that: The portion of the water blocking plate (134) that is larger than the through opening (131) forms a water blocking portion, so that when rainwater flows toward the drain outlet (123), the impact force of rainwater is used to drive the water blocking plate (134) to move downward.

9. A method for the structure combining blocking and drainage for a waste dump in an arid area as claimed in any one of claims 4 to 8, characterized in that: The method comprises the following steps: S1, rainwater on the slope of the slag pile (200), rainwater inside the pile, and rainwater at the bottom all flow into the water storage chamber (120) through corresponding seepage ports (121); S2. When the sediment (210) blocks the lower drainage outlet (123), rainwater is forced to accumulate in the water storage chamber (120), so that a siphon effect is generated during the process of the rainwater being discharged through the upper drainage outlet (122). The instantaneous large flow of rainwater generated by the siphon effect is used to flush the sediment (210) around the lower drainage outlet (123) under the action of the height difference, thereby flushing away the sediment (210) around the lower drainage outlet (123); S3. After the lower drainage port (123) is opened, the remaining rainwater in the water storage chamber (120) is discharged through the lower drainage port (123). The rainwater accumulated in the water storage chamber (120) is used to force the rainwater to generate a strong impact force when it is discharged from the lower drainage port (123), and the sediment (210) is partially formed into a scouring ditch (211). S4. Rainwater flowing in the drainage ditch (111) impacts the scouring ditch (211) to reduce the accumulation of sediment (210).

10. The method for combining blocking and drainage of waste dumps in arid areas according to claim 9, characterized in that: The method comprises the following steps: S5. At the moment when the lower drainage outlet (123) is unblocked, rainwater in the water storage chamber (120) is quickly discharged through the lower drainage outlet (123), and during the discharge process, the water blocking plate (134) is pushed to drive the water blocking plate (134) to move downward, so that the air inlet (133) is opened, thereby terminating the siphon effect and increasing the impact force when the rainwater is discharged from the lower drainage outlet (123).

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