CN115419020A - Emergency plugging device, flood drainage system and plugging method - Google Patents
Emergency plugging device, flood drainage system and plugging method Download PDFInfo
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- CN115419020A CN115419020A CN202211242392.3A CN202211242392A CN115419020A CN 115419020 A CN115419020 A CN 115419020A CN 202211242392 A CN202211242392 A CN 202211242392A CN 115419020 A CN115419020 A CN 115419020A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/02—Making or lining canals
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/08—Details, e.g. gates, screens
- E02B5/082—Closures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/08—Details, e.g. gates, screens
- E02B5/087—Divisors
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Abstract
The invention provides an emergency plugging device, which relates to the technical field of mining and comprises a driving mechanism, a plugging body and a fixed shaft, wherein two ends of the fixed shaft are fixedly connected to the side wall of a flood drainage structure, the bottom end of the plugging body is rotatably connected with the fixed shaft, the driving mechanism is arranged on the bottom wall of the flood drainage structure and is connected with the plugging body, and the driving mechanism is used for driving the plugging body to rotate relative to the fixed shaft so as to plug the flood drainage structure. The emergency plugging device provided by the invention can be started in time when a sudden accident occurs to the drainage structure of the tailing pond, and can plug the drainage structure, so that the tailing leakage risk is effectively reduced, the accident influence degree is reduced to the minimum, and meanwhile, the temporary plugging of the emergency plugging device cannot influence the overall operation of the repaired drainage structure.
Description
Technical Field
The invention relates to the technical field of mining, in particular to an emergency plugging device, a flood drainage system and a plugging method.
Background
The tailings pond is an important generation facility for metal and nonmetal mine enterprises, and is also one of important pollution sources and major hazard sources for the mine enterprises. The flood discharge structure is used as an important facility of the tailing pond, the discharged (including returned) water quality of the tailing pond is ensured to reach the standard under normal conditions, and the flood control safety of the tailing pond is ensured under the condition of extra-large heavy rain. Therefore, the normal, safe and stable operation of the flood drainage structure of the tailing pond is closely related to the normal production of enterprises, and more importantly, the normal, safe and stable operation of the flood drainage structure of the tailing pond is greatly related to the downstream environmental protection of the tailing pond and the life and property safety of personnel. Therefore, after the flood discharge well is used in each period, the water inlet structures of the flood discharge structure in the period are required to be plugged to finish the flood discharge capacity.
Once the flood drainage structure of the tailing pond collapses due to the occurrence of an emergency, a large amount of tailings and tailing water are directly discharged to the downstream through a water inlet structure, namely a flood drainage tunnel, so that serious environmental pollution and personnel life safety accidents are caused.
Under normal conditions, two methods are commonly used for blocking after the flood drainage structure of the tailing pond is completely served. The flexible plugging method is a novel plugging method provided based on a hydraulic reverse filtering principle, namely, a geosynthetic material with a reverse filtering effect is adopted, such as non-woven geotextile and other combined natural materials for plugging, a flood discharge structure after plugging can intercept tailing particles to deposit the tailing particles, water can permeate the plugging material, and tailing sand is deposited in front of the plugging material along with the passage of time, the deposition thickness is increased day by day, the water permeability is poorer and poorer, and the amount of external water seepage is reduced gradually. The other is rigid plugging, namely, rigid materials such as rubble concrete or grouted block stone are adopted for plugging. The plugging technology is suitable for being used under the normal operation condition of the flood drainage structure. However, when accidents such as flood drainage structure collapse occur, the plugging technology cannot be implemented because personnel cannot enter the tunnel.
Therefore, it is necessary to provide an emergency plugging device for a flood discharge structure of a tailing pond to solve the above problems.
Disclosure of Invention
The invention aims to provide an emergency plugging device, a flood drainage system and a plugging method, which can cope with sudden accidents of a flood drainage structure of a tailing pond and reduce tailing leakage risks.
In order to achieve the purpose, the invention provides the following technical scheme:
in a first aspect, the invention provides an emergency blocking device, which includes a driving mechanism, a blocking body and a fixed shaft, wherein two ends of the fixed shaft are fixedly connected to a side wall of a flood discharge structure, a bottom end of the blocking body is rotatably connected to the fixed shaft, the driving mechanism is mounted on a bottom wall of the flood discharge structure, the driving mechanism is connected to the blocking body, and the driving mechanism is used for driving the blocking body to rotate relative to the fixed shaft so as to block the flood discharge structure.
Further, actuating mechanism includes fixed subassembly and flexible subassembly, fixed subassembly is used for the rigid coupling on the diapire of drainage structures, flexible subassembly one end with fixed subassembly is articulated, the other end with the shutoff body is articulated.
Further, the shutoff body includes shutoff wall and sealing strip, the bottom of shutoff wall with the fixed axle rotates to be connected, the sealing strip install in the outer terminal surface of shutoff wall, the sealing strip is used for sealing the shutoff wall with gap between the flood discharge structure.
Furthermore, an installation groove is formed in the outer end face of the blocking wall, and the sealing strip is installed in the installation groove.
Furthermore, a plurality of water permeable holes are formed in the blocking wall, and the water permeable holes penetrate through two sides of the blocking wall.
Further, at least one side of the plugging wall is covered with a back filter assembly.
Further, it includes the reversed filter layer, compresses tightly strip and retaining member to return the subassembly of straining, the reversed filter layer cover in one side of shutoff wall, it is located to compress tightly the strip the reversed filter layer deviates from one side of shutoff wall, the retaining member runs through compress tightly the strip and lock in the shutoff wall, with through compress tightly the strip will the reversed filter layer compress tightly in on the shutoff wall.
The flood discharge structure further comprises a cover plate, the cover plate is fixedly arranged on the bottom wall of the flood discharge structure, and the cover plate is provided with a notch matched with the outer end face of the blocking body;
when the shutoff body is closed, the surface that the shutoff body deviates from the drainage structures diapire with the apron deviates from the surface of drainage structures diapire is the same height.
Further, the power supply source comprises a mechanical power supply source connected with the driving mechanism and a pneumatic power supply source connected with the blocking body.
In a second aspect, the invention further provides a flood discharging system, which comprises a flood discharging structure and the emergency plugging device, wherein a groove for accommodating the emergency plugging device is formed in the bottom wall of the flood discharging structure, two ends of the fixed shaft are fixedly connected to the side wall of the groove, and the driving mechanism is fixedly connected to the bottom wall of the groove.
Further, the driving mechanism is fixedly poured on the bottom wall of the groove.
In a third aspect, the present invention further provides a plugging method, using the flood discharge system according to the above scheme, including:
controlling the driving mechanism to drive the blocking body to rotate relative to the fixed shaft to block the flood discharging structure;
the flood drainage structure is permanently plugged by adopting a plugging structure, or the driving mechanism is used for pushing the plugging body to rotate relative to the fixed shaft after the flood drainage structure is repaired, so that the plugging of the flood drainage structure is cancelled.
The emergency plugging device, the flood discharge system and the plugging method provided by the invention have the following beneficial effects that:
when the flood discharge structure operates under normal working conditions, the emergency plugging device is in a closed state. When the flood discharge structure collapses, arch bars fall off and other accidents cause ore pulp leakage, an operator can remotely start the driving mechanism, and the driving mechanism drives the plugging body to rotate relative to the fixed shaft to plug the flood discharge structure. And then, the flood drainage structure is permanently plugged by adopting a common rigid plugging or flexible plugging mode, and at the moment, the emergency plugging device is always in an open state and is sealed in the plugging structure, or the emergency plugging device is closed after the flood drainage structure is repaired.
The emergency plugging device provided by the first aspect of the invention can be arranged at any position of the flood discharge structure according to the actual requirements, and a plurality of emergency plugging devices can be arranged in the flood discharge structure to improve the safety of plugging, so that a double-insurance or multi-insurance mechanism is formed. In addition, the emergency plugging device provided by the first aspect of the invention can be arranged in a flood discharge structure in a service period, can be arranged in the plugged flood discharge structure for improving the safety of the tailing pond, and can be designed at the design stage of the flood discharge structure of the tailing pond, and can be arranged at one time during construction, so that the complexity of subsequent additional construction is avoided.
Compared with the prior art, the emergency plugging device provided by the first aspect of the invention can be started in time and plug the flood discharge structure when the flood discharge structure of the tailings pond has an emergency accident, so that the tailings leakage risk is effectively reduced, and the accident influence degree is reduced to the minimum. Meanwhile, the temporary plugging of the emergency plugging device does not influence the overall operation of the repaired flood discharge structure, and the flood discharge structure can be permanently plugged by adopting a common rigid plugging technology or a common flexible plugging technology after the accident is finished or can be repaired by utilizing the rescue time and space provided by the emergency plugging device.
The flood drainage system provided by the second aspect of the invention comprises a flood drainage structure and the emergency plugging device, wherein the bottom wall of the flood drainage structure is provided with a groove, two ends of a fixed shaft are fixedly connected to the side wall of the groove, a driving mechanism is fixedly connected to the bottom wall of the groove, the groove can reduce the height of the emergency plugging device, so that the emergency plugging device can be accommodated in the emergency plugging device in a non-working state, and the flood drainage effect of the flood drainage structure cannot be influenced when the emergency plugging device operates under the normal working condition of the flood drainage structure.
The blocking method provided by the third aspect of the invention uses the flood discharge system, is simple to operate, can timely cope with sudden accidents of the flood discharge structure, and can reduce the influence degree of the accidents to the minimum.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic three-dimensional structure diagram of an emergency plugging device according to an embodiment of the present invention;
fig. 2 is a schematic top view of a flood discharge system according to an embodiment of the present invention;
FIG. 3 is a schematic view of the cross-sectional structure B-B of FIG. 2 with the occluding body open;
FIG. 4 is a schematic cross-sectional view of the occluding body when closed;
FIG. 5 is a schematic side view of a sealing wall in cooperation with a sealing strip according to an embodiment of the present invention;
FIG. 6 is a schematic view of the cross-sectional structure C-C of FIG. 5;
FIG. 7 is an enlarged view of the point A in FIG. 1;
fig. 8 is a schematic three-dimensional structure of a flood discharge system according to an embodiment of the present invention;
fig. 9 is a schematic three-dimensional structure of a flood discharging system in a second view according to an embodiment of the present invention.
An icon: 1-a drive mechanism; 11-a stationary assembly; 12-a telescopic assembly; 2-plugging body; 21-plugging walls; 211-water permeable pores; 22-a sealing strip; 23-a back filter assembly; 231-an inverted filter layer; 232-a compression strip; 233-locking member; 3, fixing a shaft; 4-a flood drainage structure; 41-groove; 5-cover plate; 51-notch; 6-a mechanical power supply source; 7-pneumatic power supply source.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following describes in detail embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
An embodiment of the first aspect of the present invention provides an emergency plugging device, as shown in fig. 1 to 4, including a driving mechanism 1, a plugging body 2 and a fixing shaft 3, wherein two ends of the fixing shaft 3 are used for being fixedly connected to a side wall of a flood discharging structure 4, a bottom end of the plugging body 2 is rotatably connected to the fixing shaft 3, the driving mechanism 1 is used for being installed on a bottom wall of the flood discharging structure 4, the driving mechanism 1 is connected to the plugging body 2, and the driving mechanism 1 is used for driving the plugging body 2 to rotate relative to the fixing shaft 3 to plug the flood discharging structure 4.
Specifically, as shown in fig. 3 and 4, when the flood discharge structure 4 operates under normal working conditions, as shown in fig. 3, the driving mechanism 1 is in a contracted state, and the blocking body 2 is close to the bottom wall of the flood discharge structure 4, so as not to block the flood discharge structure 4. When the flood discharge structure 4 collapses, the arch bar falls off and other accidents cause ore pulp leakage, the operator can control the driving mechanism 1 to start, so that the driving mechanism 1 extends, as shown in fig. 4, the plugging body 2 is pushed to rotate anticlockwise until the plugging body 2 rotates to form closed contact with the flood discharge structure 4, and then the control is stopped, and the plugging effect on the flood discharge structure 4 is realized.
The emergency plugging device provided by the embodiment of the first aspect of the invention can be immediately started when an accident occurs, the accident influence degree is reduced to the minimum, and after the accident is finished, the conventional plugging technology can be still adopted to permanently plug the flood discharge structure 4 or the rescue time and space provided by the emergency plugging device are utilized to repair the flood discharge structure 4. Simultaneously, emergent plugging device belongs to can be permanent and used cyclically, and the whole operation after 4 restoreings of drainage structures can not be influenced in interim shutoff, is restoreing the back to drainage structures 4 promptly, can close emergent plugging device, resumes drainage structures 4's flood discharge and water passing capacity.
The drive mechanism 1 is specifically explained below:
it should be noted that all the structures capable of driving the blocking body 2 to rotate relative to the fixed shaft 3 to block the flood discharging structure 4 may be the driving mechanism 1 mentioned in the above embodiments. For example, the driving mechanism 1 includes a linear motion structure such as a pneumatic cylinder, a hydraulic cylinder, etc., or the driving mechanism 1 includes a rotating motor and a transmission assembly, the transmission assembly can transmit the power of the rotating motor to the blocking body 2, and the transmission assembly can be a gear set.
In some embodiments, as shown in fig. 1, the driving mechanism 1 includes a fixing component 11 and a telescopic component 12, the fixing component 11 is used for being fixed on the bottom wall of the flood discharging structure 4, and one end of the telescopic component 12 is hinged with the fixing component 11, and the other end is hinged with the blocking body 2.
When the plugging device is used, the plugging body 2 is driven to rotate relative to the fixed shaft 3 through the telescopic action of the telescopic component 12, and when the telescopic component 12 is telescopic, two ends of the telescopic component rotate relative to the fixed component 11 and the plugging body 2 respectively. The driving mechanism 1 is simple in structure and stable in driving mode, and can quickly open and close the plugging body 2.
The telescopic assembly 12 is preferably a hydraulic cylinder, a cylinder body in the hydraulic cylinder is hinged to the fixing assembly 11, one end of the piston is connected with the cylinder body in a sliding mode, the other end of the piston is hinged to one side of the plugging body 2, and the plugging body 2 can be driven to open and close when the hydraulic cylinder is opened and closed. Fixed subassembly 11 can include fixing base and bolt, and the bolt runs through fixed subassembly 11 back screw in drainage structures 4's diapire, and for guaranteeing fixed subassembly 11's stability, can consider to carry out the concrete secondary with fixed subassembly 11's bolt and drainage structures 4's diapire and pour fixedly, and the selection of fixed subassembly 11 position is confirmed according to the size of the flexible length of flexible subassembly 12.
The number of the drive mechanisms 1 may be one, or two, three, or the like.
In at least one embodiment, in order to ensure safe, rapid and stable plugging of the plugging body 2, two driving mechanisms 1 are arranged and respectively installed at the left and right symmetrical positions of the plugging body 2, and the selection of the installation positions is determined according to the size of the section of the flood discharging structure 4 and the size of the plugging body 2, and the selection of the positions with uniform stress is determined.
The range of the maximum rotation angle of the blocking body 2 driven by the driving mechanism 1 is 45 degrees to 90 degrees, namely the blocking effect of the blocking body 2 can be realized when the blocking body 2 is driven by the driving mechanism 1 to rotate by 45 degrees to 90 degrees, and the range can be 45 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees or 90 degrees.
The structure of the block body 2 is specifically explained below:
in some embodiments, as shown in fig. 5, the plugging body 2 is provided with a plurality of water permeable holes 211, so that water in the tailing slurry can flow downstream through the water permeable holes 211, and the deposition of the tailing sand is accelerated.
The shape of the water permeable holes 211 can be round, quincunx, rectangular, etc.
In at least one embodiment, the water permeable holes 211 are quincunx in shape, and the distance between two adjacent water permeable holes 211 is 20-30cm.
In some embodiments, as shown in fig. 5 and 6, in order to provide better sealing effect for the blocking body 2, the blocking body 2 includes a blocking wall 21 and a sealing strip 22, the bottom end of the blocking wall 21 is rotatably connected to the fixed shaft 3, the sealing strip 22 is mounted on the outer end surface of the blocking wall 21, and the sealing strip 22 is used for sealing the gap between the blocking wall 21 and the flood discharge structure 4, so as to ensure complete sealing of the blocking body 2.
When the shutoff, if utilize blocking wall 21 directly to seal drainage structures 4, because be the rigid connection between the two, this will certainly lead to appearing the space between blocking wall 21 and the drainage structures 4, lead to sealed effect not good, add sealing strip 22 and can effectively fill above-mentioned space, avoid the mortar tailing to leak outward.
Wherein, the shutoff wall 21 can adopt steel material, the type of shutoff wall 21 can set up according to the 4 section types of drainage structures, the overwhelming majority is the shape of a hoof section type, 21 section size sizes of shutoff wall can be confirmed according to 4 section size sizes of drainage structures, under the general condition, 21 size slightly less than of shutoff wall is 1-2cm in 4 section size sizes of drainage structures, set up like this and guarantee that shutoff wall 21 does not take place the rigidity friction with drainage structures 4 when opening and close, the life of plugging system has been prolonged.
The sealing strip 22 may be annular and surround the outer end surface of the blocking wall 21, or the sealing strip 22 may be curved as shown in fig. 5 to have an arch shape and surround the top and the left and right sides of the outer end surface of the blocking wall 21.
The sealing strip 22 may be provided with an air inlet and an air outlet. Before the blocking wall 21 is contacted with the flood discharge structure 4, the sealing strip 22 can be in an uninflated state, and after the contact, the air pressure power supply source 7 supplies air into the sealing strip 22, so that the inflation is stopped after the sealing strip 22 is completely and tightly contacted with the flood discharge structure 4. For the sealing strip 22 is always in the full state, the joint area between the outer surface of the sealing strip 22 and the flood discharge structure 4 is larger, and the sealing effect is better.
Specifically, in order to make the structure of the sealing tape 22 more stable with respect to the blocking wall 21, as shown in fig. 6, the outer end surface of the blocking wall 21 is opened with a mounting groove into which the sealing tape 22 is mounted.
When the blocking body 2 includes the blocking wall 21 and the sealing tape 22, as shown in fig. 5, the permeable holes 211 are opened on the blocking wall 21, and the permeable holes 211 penetrate both sides of the blocking wall 21.
In some embodiments, at least one side of the blocking wall 21 is covered with a back filter assembly 23, the back filter assembly 23 is arranged to filter the tailing slurry reversely after the tailing slurry is poured into the flood discharging structure 4 to contact with the blocking wall 21 when an accident happens, so as to ensure that the tailing sand is blocked on one side of the blocking wall 21, and the water can flow downstream through the back filter assembly 23 and the water permeable holes 211.
Specifically, the blocking wall 21 may be covered with the back filter assembly 23 on one side or both sides. In at least one embodiment, the side of the containment wall 21 that is intended to contact the tailings slurry is covered with a back filter assembly 23 that acts as a barrier to the tailings sand in the tailings slurry before it enters the water permeable holes 211.
On the basis of the above embodiment, the back filter assembly 23 includes the back filter layer 231, the back filter layer 231 can cover the whole side of the plugging wall 21, and the back filter layer 231 can be a nonwoven geotextile. The mode of setting the permeable holes 211 and fixing the non-woven geotextile mainly ensures that the plugging body 2 has the effects of plugging and reverse filtration. Wherein, utilize the characteristic of non-woven geotextile "the sand is not strained in the drainage for moisture in the tail mortar passes through the 2 flow direction low reaches of shutoff bodies, and the tailing siltation of 2 one sides of shutoff bodies increases along with the lapse of time, and closely knit gradually, has formed a shutoff structure automatically, jointly forms dual fail-safe shutoff with shutoff bodies 2, the effectual efficiency that promotes the shutoff, the further emergence and the deterioration that have slowed down the accident.
In general, the non-woven geotextile can be considered to adopt the weight of 400g/m 2 A thickness of 3.0mm and a permeability coefficient K of 10 -2 -10 -3 The concrete conditions can be adjusted and changed according to the properties of the tailings in the tailing pond between cm/s.
As shown in fig. 7, in order to firmly mount the reverse filtering layer 231 on the blocking wall 21, the reverse filtering layer 23 may further include a pressing strip 232 and a locking member 233, the reverse filtering layer 231 covers one side of the blocking wall 21, the pressing strip 232 is located on one side of the reverse filtering layer 231 facing away from the blocking wall 21, and the locking member 233 penetrates through the pressing strip 232 and is locked in the blocking wall 21, so as to press the reverse filtering layer 231 on the blocking wall 21 through the pressing strip 232.
In particular, the compression bar 232 may have a ring shape, and is pressed against the edge of the reverse filter layer 231 by the locking action of the locking member 233, to define the position of the reverse filter layer 231 with respect to the plugging wall 21.
The retaining members 233 are configured in a plurality, and the retaining members 233 may be bolts and are sequentially spaced along the extending direction of the pressing bar 232. If the inverted filter 231 is damaged or fails, the bolts can be removed and replaced.
In some embodiments, the side of the reverse filter layer 231 facing away from the blocking wall 21 may be further covered with an isolation layer, the material of the isolation layer is preferably consistent with the material of the reverse filter layer 231, the isolation layer is connected with the side of the compression strip 232 facing away from the reverse filter layer 231, and the connection strength is less than that of the compression strip 232 and the reverse filter layer 231. Specifically, the isolation layer may be connected to the reverse filter layer 231 by a gel.
When the shutoff, the isolation layer is direct to be contacted with the tailing slurry, and the tailing slurry siltation of shutoff body 2 one side increases along with the lapse of time, and closely knit gradually, has formed a block structure automatically, and block structure can solidify on the isolation layer. After the blocking wall 21 is closed, the isolation layer is pulled by the blocking structure, can be torn off from the compression strip 232 and attached to the blocking structure, and plays a role in protecting the reverse filter layer 231. After the plugging is finished, the isolation layer can be installed again.
In some embodiments, as shown in fig. 1, the emergency plugging device further includes a cover plate 5, the cover plate 5 is used for being fixedly mounted on the bottom wall of the flood discharge structure 4, the cover plate 5 has a notch 51 matched with the outer end surface of the plugging body 2, so that when the cover plate 5 is in the closed state shown in fig. 3, the plugging body 2 is tightly matched with the cover plate 5, and then the sealing strip 22 is inflated by the pneumatic power supply source 7, so that the sealing strip 22 is fully contacted with the notch 51 on the cover plate 5, and the plugging body 2 and the cover plate 5 form a sealed support plate, thereby ensuring that slurry leakage cannot occur in the normal use process.
In at least one embodiment, as shown in fig. 3, when the block body 2 is closed, the surface of the block body 2 facing away from the bottom wall of the flood discharge structure 4 is flush with the surface of the cover plate 5 facing away from the bottom wall of the flood discharge structure 4, i.e. the top surface of the block body 2 is coplanar with the top surface of the cover plate 5.
Above-mentioned setting can be so that when the shutoff body 2 closed, emergent plugging device's top surface is level and smooth, can replace the former diapire of former drainage structure 4 to use.
In some embodiments, as shown in fig. 8, the emergency occlusion device further comprises a power supply source, which comprises a mechanical power supply source 6 connected to the driving mechanism 1 and a pneumatic power supply source 7 connected to the occlusion body 2.
The mechanical power supply source 6 and the pneumatic power supply source 7 can be arranged on a slope or a flat place which is close to the flood discharge structure 4 of the tailing pond, relatively high in position and convenient to pass, can be arranged in a distinguished mode according to the types of the tailing pond, and mainly ensures that the accident can be quickly achieved and the accident does not affect the power supply source, and meanwhile, the power supply source can be arranged in one equipment room.
Wherein, mechanical power supply source 6 can include a hydraulic power unit, and this pump station provides the power supply for actuating mechanism 1 through hydraulic transmission system, guarantees that actuating mechanism 1 can in time start when the occurence of failure carries out the shutoff to the drainage tunnel in the drainage structure 4. The specification selection of the telescopic assembly 12 in the driving mechanism 1 is matched with the power provided by a hydraulic pump station, so that the telescopic assembly 12 can support the tailing slurry on one side of the plugging body 2 to apply pressure. The hydraulic pump station can transmit hydraulic oil to the telescopic assembly 12 through a hydraulic pipeline, so that the telescopic assembly 12 is started and closed. The hydraulic pipeline can be laid according to on-site actual conditions, if set up the sulculus along 4 inner walls of drainage structure and seal hydraulic pipeline in the inside, and later be connected with hydraulic power unit in the power source pump house outside main tunnel to the tunnel, perhaps set up the sulculus along 4 inner walls of drainage structure and seal hydraulic pipeline in the inside, and later through main tunnel to the drainage structure 4 structures of intaking that next stage was used draw forth in the power source pump house and be connected with hydraulic power unit.
The power provided by the mechanical power supply source 6 can be calculated and verified according to the height of the water inlet structure of the flood discharging structure 4 of the tailing pond and the possible impact force of tailing slurry, so that the power source of the hydraulic pump station required to be adopted can be calculated and verified.
The pneumatic power supply source 7 can comprise an air pump with large air volume, the air pump mainly provides air volume for the sealing strip 22, when the sealing wall 21 is closed, the sealing body 2 can be tightly closed with the periphery of the flood discharge structure 4, and it is ensured that tailing slurry discharged from a water inlet structure cannot leak downstream through gaps. The air source pipeline used by the pneumatic power supply source 7 can also be arranged with the hydraulic pipeline according to the same path and mode, and finally the air pump station in the power source pump room outside the flood discharging structure 4 is connected, and the other side is connected with the sealing strip 22.
As shown in fig. 9, the flood discharging system according to the embodiment of the second aspect of the present invention includes a flood discharging structure 4 and the emergency plugging device, a groove 41 for accommodating the emergency plugging device is formed in a bottom wall of the flood discharging structure 4, two ends of the fixing shaft 3 are fixedly connected to side walls of the groove 41, and the driving mechanism 1 is fixedly connected to the bottom wall of the groove 41.
The groove 41 can form a certain operating space to facilitate the installation of the driving mechanism 1, the plugging body 2 and the fixed shaft 3, and after the installation is finished, the redundant parts are covered by the prefabricated special-shaped cement cover plate 5, and finally a sealed support plate is formed when the plugging body 2 is restored to the original position.
In at least one embodiment, as shown in fig. 3, when the block body 2 is closed, the top surface of the block body 2, the top surface of the cover plate 5 and the bottom wall of the flood discharge structure 4 where the recess 41 is not provided are at the same height, so that the emergency blocking device does not affect the subsequent operation of the flood discharge structure 4.
In some embodiments, to enhance the connection between the driving mechanism 1 and the flood discharge structure 4, the driving mechanism 1 is cast and fixed on the bottom wall of the recess 41.
Specifically, the bolts of the fixing assembly 11 and the flood discharge structure 4 can be fixed by concrete secondary pouring.
Embodiments of the third aspect of the present invention provide a plugging method, which uses the flood discharge system, and includes:
the control driving mechanism 1 pushes the plugging body 2 to rotate the plugging and flood discharging structure 4 relative to the fixed shaft 3;
adopt the shutoff structure to carry out permanent shutoff to drainage structure 4, perhaps restore back rethread actuating mechanism 1 to drainage structure 4 and promote the shutoff body 2 and rotate the shutoff of cancellation drainage structure 4 for fixed axle 3.
The plugging method provided by the embodiment of the third aspect of the invention is simple to operate, can timely cope with sudden accidents of the flood drainage structure, and can reduce the influence degree of the accidents to the minimum.
The above plugging method is specifically described in the following with a specific embodiment:
the emergency plugging device is arranged in the drainage structure 4 being serviced and having been serviced. Before installation, calculation is carried out according to known parameters such as the section size type of the flood discharge structure 4, the height of a water inlet structure of the flood discharge structure 4 and the like to obtain the maximum pulp pressure possibly generated when the flood discharge structure 4 is in an accident, and the thickness and the material of a blocking wall 21 used by the emergency blocking device, the specification and the model of a hydraulic support cylinder used by the telescopic component 12, the size of a hydraulic pump station used by a power supply source and the like are selected according to the calculation result. After the types of the equipment are determined, the grooves 41 are excavated on the bottom plate of the flood drainage structure 4 according to the section size of the flood drainage structure 4, the excavation range can meet the space required by construction, and after the space with the size same as that of the plugging body 2 is reserved, the cover plate 5 which can be backfilled to more than remaining space is prefabricated.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (12)
1. The utility model provides an emergent plugging device, its characterized in that includes actuating mechanism (1), the shutoff body (2) and fixed axle (3), the both ends of fixed axle (3) are used for the rigid coupling at the lateral wall of drainage structures (4), the bottom of the shutoff body (2) with fixed axle (3) rotate to be connected, actuating mechanism (1) are used for installing on the diapire of drainage structures (4), actuating mechanism (1) with the shutoff body (2) are connected, actuating mechanism (1) are used for driving the shutoff body (2) for fixed axle (3) rotate with the shutoff drainage structures (4).
2. The emergency plugging device according to claim 1, wherein said driving mechanism (1) comprises a fixed assembly (11) and a telescopic assembly (12), said fixed assembly (11) being adapted to be fixedly attached to the bottom wall of the flood discharge structure (4), said telescopic assembly (12) being hinged at one end to said fixed assembly (11) and at the other end to said plugging body (2).
3. The emergency plugging device according to claim 1, wherein said plugging body (2) comprises a plugging wall (21) and a sealing strip (22), the bottom end of said plugging wall (21) is rotatably connected with said fixed shaft (3), said sealing strip (22) is mounted on the outer end face of said plugging wall (21), and said sealing strip (22) is used for sealing the gap between said plugging wall (21) and said flood drainage structure (4).
4. The emergency plugging device according to claim 3, wherein an installation groove is formed on the outer end surface of the plugging wall (21), and the sealing strip (22) is installed in the installation groove.
5. The emergency plugging device according to claim 3, wherein a plurality of water permeable holes (211) are opened on the plugging wall (21), and the water permeable holes (211) penetrate through two sides of the plugging wall (21).
6. Emergency plugging device according to claim 3, characterized in that at least one side of the plugging wall (21) is covered with a back filter assembly (23).
7. The emergency plugging device according to claim 6, wherein the back filter assembly (23) comprises a back filter layer (231), a pressing strip (232) and a locking member (233), the back filter layer (231) covers one side of the plugging wall (21), the pressing strip (232) is located on one side of the back filter layer (231) facing away from the plugging wall (21), and the locking member (233) penetrates through the pressing strip (232) and is locked in the plugging wall (21) so as to press the back filter layer (231) on the plugging wall (21) through the pressing strip (232).
8. The emergency plugging device according to claim 1, further comprising a cover plate (5), wherein the cover plate (5) is used for being fixedly arranged on the bottom wall of the flood discharging structure (4), and the cover plate (5) is provided with a notch (51) matched with the outer end face of the plugging body (2);
when the shutoff body (2) are closed, the surface of the shutoff body (2) deviating from the bottom wall of the flood discharge structure (4) is as high as the surface of the cover plate (5) deviating from the bottom wall of the flood discharge structure (4).
9. The emergency plugging device according to claim 8, further comprising a power replenishment source comprising a mechanical power replenishment source (6) connected to the drive mechanism (1) and a pneumatic power replenishment source (7) connected to the plugging body (2).
10. A flood drainage system, comprising a flood drainage structure (4) and an emergency plugging device according to any one of claims 1 to 9, wherein a groove (41) for accommodating the emergency plugging device is formed in a bottom wall of the flood drainage structure (4), both ends of the fixed shaft (3) are fixedly connected to side walls of the groove (41), and the driving mechanism (1) is fixedly connected to the bottom wall of the groove (41).
11. A flood discharge system according to claim 10, characterized in that the drive means (1) is cast in place in the bottom wall of the recess (41).
12. A method of plugging, using the flood discharge system of claim 10 or 11, comprising:
controlling the driving mechanism (1) to drive the blocking body (2) to rotate relative to the fixed shaft (3) to block the flood discharging structure (4);
adopt the shutoff structure to carry out permanent shutoff to drainage structures (4), perhaps right drainage structures (4) are restoreed the back rethread actuating mechanism (1) promotes shutoff body (2) for fixed axle (3) rotate the cancellation is right the shutoff of drainage structures (4).
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| CN202211242392.3A CN115419020B (en) | 2022-10-11 | 2022-10-11 | Emergency plugging device, flood drainage system and plugging method |
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| CN115419020B CN115419020B (en) | 2023-08-04 |
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| EP1589152A2 (en) * | 2004-04-22 | 2005-10-26 | O. Aeschlimann AG | High water protection system |
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| CN206562601U (en) * | 2017-02-28 | 2017-10-17 | 上海东泽水务科技股份有限公司 | Turn over formula hydraulic pressure lock gate for flood protection in ground |
| CN208792259U (en) * | 2018-08-02 | 2019-04-26 | 中国瑞林工程技术股份有限公司 | A kind of device blocked for Tailings Dam flood tunnel emergency |
| CN210509290U (en) * | 2019-07-10 | 2020-05-12 | 安徽建筑大学 | Emergency plugging door |
| CN213448532U (en) * | 2020-08-17 | 2021-06-15 | 中交第一航务工程局有限公司 | Hydraulic cofferdam |
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2022
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1589152A2 (en) * | 2004-04-22 | 2005-10-26 | O. Aeschlimann AG | High water protection system |
| CN105179011A (en) * | 2015-09-04 | 2015-12-23 | 金建工程设计有限公司 | Tunnel plugging facility and tunnel plugging method |
| CN206562601U (en) * | 2017-02-28 | 2017-10-17 | 上海东泽水务科技股份有限公司 | Turn over formula hydraulic pressure lock gate for flood protection in ground |
| CN208792259U (en) * | 2018-08-02 | 2019-04-26 | 中国瑞林工程技术股份有限公司 | A kind of device blocked for Tailings Dam flood tunnel emergency |
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| CN213448532U (en) * | 2020-08-17 | 2021-06-15 | 中交第一航务工程局有限公司 | Hydraulic cofferdam |
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| Publication number | Publication date |
|---|---|
| CN115419020B (en) | 2023-08-04 |
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