CN113026822B - Depth detection assembly for seepage-proofing barrier construction and seepage-proofing barrier construction method - Google Patents
Depth detection assembly for seepage-proofing barrier construction and seepage-proofing barrier construction method Download PDFInfo
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- CN113026822B CN113026822B CN202110335198.9A CN202110335198A CN113026822B CN 113026822 B CN113026822 B CN 113026822B CN 202110335198 A CN202110335198 A CN 202110335198A CN 113026822 B CN113026822 B CN 113026822B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/18—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring depth
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Abstract
The invention relates to the technical field of seepage prevention and environmental protection, and discloses a depth detection assembly for construction of an seepage prevention barrier, which comprises an adsorption magnet, a shell, a winding part and a detection rope, wherein the adsorption magnet and the winding part are fixedly arranged in the shell, the gravity center of the depth detection assembly is ensured to be coincided with the geometric center of the shell, the detection rope is fixed on the adsorption magnet, the adsorption magnet is fixedly adsorbed on a counterweight groove for lowering a composite film layer, and the winding part is used for winding and unwinding the detection rope. According to the device, the adsorption magnet is arranged as the electromagnet and can be directly adsorbed and fixed on the counterweight groove through magnetic force without being reinforced by an excessive fixing structure, then the depth detection assembly can be separated from the counterweight groove through power-off demagnetization when the depth detection assembly needs to be recovered, and the depth detection assembly does not need to be separated by pulling the detection rope, so that the situation that the detection line is broken due to external force pulling can be reduced. In addition, the automatic recovery of the depth detection assembly can be realized by arranging the winding part, and the operation amount of operators is reduced.
Description
Technical Field
The invention relates to the technical field of seepage prevention and environmental protection, in particular to a depth detection assembly for construction of an seepage prevention barrier.
Background
With the rapid development of industrial and urban construction in China, a large number of polluted plots which lack effective anti-seepage measures, such as chemical fields, mine storage yards, irregular refuse landfill sites and the like, exist at present, cause pollution of different degrees to surrounding soil and underground water bodies, and seriously harm the ecological environment and the health of surrounding residents. Pollutants are mainly diffused to the periphery through a water body in a field to cause pollution of the surrounding environment, the pollutants are effectively controlled, the current main control means is to build a vertical separation barrier, the pollutants are physically separated, and the connection between the water body in the polluted field and the surrounding environment is blocked to control the migration of the pollutants. The vertical barrier not only prevents the infiltration of contaminants to the surroundings, but also has the effect of preventing the surrounding groundwater from flowing into the contaminated site.
Most of the existing vertical barrier walls are formed by barrier walls and composite films with excellent anti-seepage performance to form a composite vertical barrier for separating pollutants. Composite vertical separation protective screen need monitor the transfer degree of depth of compound rete when carrying out the construction, but current detection subassembly is for using the snap ring jack on the gauge hammer, transfer length through fixing the gauge rope on the gauge hammer is measured, need release the gauge rope when finishing measuring and retrieving and retrieve through dragging another recovery rope of dragging and fixing on the gauge hammer again, but in the in-service use owing to transfer the degree of depth darker, probably link behind the gauge rope whereabouts at other structural, thereby still twine the problem that causes the gauge hammer to be difficult to retrieve with another recovery rope easily. In addition, because will fix the snap ring on the counter weight groove of the complex film of transferring, need set up special fixed knot structure for fixed firm and fasten, increased the installation fastening step to the snap ring from this, the snap ring can't be withdrawed when retrieving simultaneously and is caused the waste.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a depth detection assembly for seepage-proofing barrier construction and a seepage-proofing barrier construction method.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides an prevention of seepage barrier construction is with degree of depth detection subassembly, wherein, includes and adsorbs magnet, casing, winds roll portion and exploration rope, adsorb the magnet and wind roll portion and all fix and set up in the casing, and guarantee that the focus of degree of depth detection subassembly coincides with the geometric centre of casing, the exploration rope is fixed in on adsorbing the magnet, adsorb the magnet and fix and adsorb on transferring the counter weight groove of compound rete, it is used for receiving and releasing the exploration rope to wind roll portion. This scheme can fix the detection subassembly on the counter weight groove through setting up the absorption magnet, then transfers along with the counter weight groove, and rethread observation exploration rope's scale is judged and is transferred the degree of depth, can directly pull the exploration rope when retrieving and make absorption magnet drop and then retrieve from the counter weight groove, and easy operation is convenient, can avoid the problem that the exploration rope winding was knotd, can directly omit snap ring structure reduction installation procedure and material waste in addition.
In the invention, the casing further comprises two sets of mounting cavities, a winding drum and a limiting frame, the limiting frame is connected between the two sets of mounting cavities, the two sets of mounting cavities are respectively and rotatably arranged at two ends of the winding drum, the adsorption magnet and the winding part are respectively and fixedly mounted in the mounting cavities, and the winding part drives the winding drum to rotate.
In the invention, the winding part further comprises a driving motor, a driving gear, a transmission shaft, a limiting spring and a transmission gear ring, the driving gear is slidably sleeved on the transmission shaft, the limiting spring is clamped between the transmission shaft and the driving gear and is used for enabling the driving gear and the transmission gear ring to be meshed with each other, the driving motor drives the transmission shaft to rotate, and the transmission gear ring is fixedly arranged in the winding drum. This scheme accessible is around the reducible manual work of line work step of receiving is realized automatically to the book portion.
In the invention, the adsorption magnet is an electromagnet, the driving gear is made of a magnetic material, a magnetic pressing block is arranged on the mounting shell far away from one end of the adsorption magnet in a sliding mode and is used for abutting against the winding drum to improve friction force, and when the electromagnet works, the magnetic force on the driving gear is larger than the elastic force of the limiting spring on the driving gear, and the direction of the magnetic force is opposite. The magnetic adsorption power of this scheme accessible electro-magnet can make magnetic briquetting adsorbed to support and press on the lateral wall of bobbin, and then increases frictional force, can restrict the rotational speed of bobbin from this when the unwrapping wire, prevents that the bobbin from causing the condition that the rope was crossed to put, can control the meshing condition of control drive gear and transmission ring gear through magnetic adsorption power simultaneously to in receive and release line operation.
In the invention, a sensor is further arranged on the limiting frame and used for detecting the retraction length of the detection rope. This scheme is through setting up sensor accessible sensor real-time feedback transfer degree of depth more accurate.
The invention also aims to provide an anti-seepage barrier construction method, which comprises the following construction steps:
1) Forming a blocking groove in a region needing blocking;
2) Laying a composite film layer below at least one side of the barrier groove;
3) Monitoring and controlling the composite film layer to be lowered to a preset depth by using the depth detection assembly for construction of the anti-seepage barrier, and recovering the depth detection assembly;
4) Lowering the joint box to form a pouring space surrounded by the joint box, the composite film layer, the side wall of the barrier groove and the bottom surface;
5) And filling a barrier material into the pouring space to form a barrier wall, wherein the wall material can ensure that the composite geomembrane is completely attached to the wall, and the composite membrane layer is reinforced again.
In the present invention, further, the step of reinforcing the composite film layer comprises:
1) Backfilling operation is carried out in the pouring space in an underwater guide pipe pouring mode, and pouring is stopped when the barrier material to be poured and filled reaches the top of the barrier groove;
2) Removing the upper soft soil layer;
3) Laying the composite film layer of the leakage part on the side wall of the opposite side and the top of the poured separation wall to form a primary bend;
4) And continuously filling the blocking material into the newly formed pouring space again to form a compaction part for compacting the composite film layer. The firm mode of pressure that sets up in this scheme can avoid need when pressing admittedly digging the anchor groove again near the baffler groove and carry out the trouble of pressing admittedly, and the work load can be saved to the process of having saved excavation anchor groove from this, in addition, also can accomplish under some field conditions that do not possess the excavation anchor groove and press solid construction, has reduced the topography requirement to the construction site, and the practicality improves.
In the invention, further, at least one time of reinforcing the combined film layer is carried out in the whole filling process. The number of the pressing parts can be set according to actual use requirements.
In the present invention, further, the height of the bottom surface of the press-fixing portion is higher than the highest height of the blocked object. This scheme can guarantee through this setting that pollutant (filth filtration liquid) can not directly contact with compound rete, and then can avoid the corruption destruction to compound rete, has also increased the life of compound rete.
In the present invention, further, a sealant is coated in the overlapping region of the composite film layer to seal the overlapping region of the composite film layer. This scheme can improve the leakproofness of its overlap joint portion when carrying out the compound rete of overlap joint, prevents that the pollutant from by seam crossing seepage.
Compared with the prior art, the invention has the beneficial effects that:
according to the device, the adsorption magnet is arranged as the electromagnet and can be directly adsorbed and fixed on the counterweight groove through magnetic force without being reinforced by an excessive fixing structure, then the depth detection assembly can be separated from the counterweight groove through power-off demagnetization when the depth detection assembly needs to be recovered, and the depth detection assembly does not need to be separated by pulling the detection rope, so that the situation that the detection line is broken due to external force pulling can be reduced. In addition, the automatic recovery of the depth detection assembly can be realized by arranging the winding part, and the operation amount of operators is reduced.
In addition, the existing trouble that the anchor groove needs to be dug again near the barrier groove for pressing and fixing can be avoided through the pressing and fixing mode arranged in the barrier groove in the construction of the anti-seepage barrier, so that the process of digging the anchor groove is saved, the construction amount can be saved, in addition, the pressing and fixing construction can be completed under the field conditions without digging the anchor groove, the topographic requirements on the construction field are reduced, and the practicability is improved.
Drawings
Fig. 1 is a schematic structural view of the composite geomembrane under construction according to the present invention.
Fig. 2 is a schematic view of the construction of the barrier of the present invention.
FIG. 3 is an exploded view of the depth detection assembly of the present invention.
Fig. 4 is a sectional view of a coupling structure of a depth sensing module according to the present invention.
FIG. 5 is a schematic diagram of the overall structure of the depth detection assembly of the present invention.
In the drawings: 1. compounding the geomembrane; 2. a support plate; 3. a counterweight groove; 4. a counterweight block; 5. a depth detection component; 51. a detection line; 52. installing a cavity; 521. a magnetic briquetting; 53. a limiting spring; 54. an electromagnet; 55. a limiting frame; 56. a drive motor; 561. a drive shaft; 57. a sensor; 58. a drive gear; 59. a bobbin; 591. a transmission gear ring; 562. a transmission frame; 6. garbage; 71. a compaction part; 72. a blocking portion; 8. a power source; 9. a lap zone.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for purposes of illustration only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 3, in a preferred embodiment of the present invention, a construction method of an anti-seepage barrier is provided, in which the position of the blocking groove in the secondary construction method is generally an annular blocking groove formed around the ring of the dirt accumulation area, and the width of the blocking groove is determined according to the specific anti-seepage requirement, such as 60cm; the bottom of the barrier groove extends into the water-impermeable layer for a predetermined distance, specifically 100-200cm; after grooving, firstly, the composite geomembrane 1 or the GCL coated with the composite geomembrane 1 is vertically paved downwards along one side or two sides of the barrier groove, after the downward paving is completed, the joint boxes are arranged at two sides of the composite film layer, namely the lap joint area 9, so that the two groups of joint boxes are combined with the barrier groove to form a shell-shaped structure form with an opening at the upper part, then the low-permeability wall material is filled into the structure by adopting an underwater pouring or direct backfilling mode, and after the wall is solidified or meets the design requirement, the joint boxes are pulled up to form the composite vertical barrier.
When the impermeable material is backfilled in an underwater pouring mode, an upper soft soil layer is removed after the impermeable material is poured to the top, because the underwater guide pipe is adopted for pouring, silt at the bottom can be jacked to the top, the performance difference of the material and the impermeable wall body is large, the material is in a soft and hard-to-solidify state and is not suitable for being used as a part of the wall body, the material needs to be removed, and after the material is removed, a composite film layer of an outer leakage part is laid on the side wall on the opposite side and the top of the poured barrier wall to form a primary bend; and then backfilling the impermeable material to the top of the barrier groove again until the impermeable material is solidified.
The composite geomembrane 1 is the composite geomembrane 1 with non-woven fabrics at least on one side, one side of the non-woven fabrics faces to pollutants, and the non-woven fabrics on the outer side can play a role in protecting the composite geomembrane 1, so that the damage to the composite geomembrane 1 in the construction process can be reduced; on the other hand, after the lapping area 9 of the outer non-woven fabric is soaked with retaining wall slurry or coated with a sealant, the pores of the non-woven fabric are filled with the sealing material, and after lapping, the lapping part has excellent seepage-proofing performance, so that the condition of leakage at the lapping part can be prevented, and the multi-group composite geomembrane 1 is ensured to form an anti-seepage whole body.
In general, the vertical baffle wall is a low-permeability wall body, and the permeability coefficient of the vertical baffle wall is not more than 10 -7 cm/s, mainly plays a role in seepage-proofing isolation and pollutant blocking, the thickness of the wall body can be selected within 40-120 cm according to the seepage-proofing requirement and the use characteristics, and the thickness of the wall body is not less than 60cm in environmental-friendly seepage-proofing.
The composite geomembrane 1 is a composite geomembrane 1 with two cloth films or one cloth film, and the composite geomembrane 1 with two cloth films is preferably selected; the composite geomembrane 1 is made of PE material and has the thickness of 0.1-1.0 mm, the thickness of the composite geomembrane 1 is determined according to the pollutant concentration and the anti-seepage grade requirement, and the thickness of the composite geomembrane 1 is not less than 0.5mm when only the composite geomembrane 1 is used; the non-woven fabric compounded on the composite geomembrane 1 is PP or PET needle-punched short fiber non-woven fabric with the gram weight of 120-350 g/m 2 Selecting the gram weight of the non-woven fabric according to the requirements of the groove depth and the integral anti-seepage performance; if the composite geomembrane 1 is covered on the GCL, the composite geomembrane 1 is selected, wherein the composite geomembrane 1 is made of PE and has the thickness of 0.1-0.5 mm.
In order to facilitate the vertical placement of the composite geomembrane 1, the composite geomembrane 1 needs to be transformed into an anti-seepage membrane assembly, specifically, one or more sets of supporting plates 2 and counterweight grooves 3 are installed on the composite geomembrane 1, and at least one set of supporting plates 2 and counterweight grooves 3 are installed at the bottom of the composite geomembrane 1; the support plate 2 can ensure the flatness of the composite geomembrane 1 when the composite geomembrane 1 is vertically laid, the support plate 2 is a galvanized steel plate or a stainless steel plate with the width of 5-15 cm and the thickness of more than or equal to 2mm, and the length is the width of the composite geomembrane 1; the counterweight groove 3 is a galvanized steel plate or a stainless steel plate with the thickness of more than or equal to 2mm and is fixed in the middle of the geotextile, namely the distance between the end part and the edge of the geotextile is not less than 60cm except for the two groups of overlapping areas 9, the width of the long side edge is the same as that of the supporting plate 2, the width of the groove bottom is 5-15 cm, and the width of the short side edge is 5-10 cm; a counterweight block 4 is placed in the counterweight groove 3, the composite geomembrane 1 can be smoothly and vertically placed through gravity provided by the counterweight block 4, the counterweight block 4 is a mud block mainly made of bentonite, after wall materials are poured to form a wall, the counterweight block 4 expands in a limited space, and the space is extruded to be compact so as to prevent bottom seepage; in addition, the total weight of the balancing weights 4 is determined according to the depth of the groove, when the groove is shallow, a single row of balancing weights 4 can be selectively placed, when the groove is deep, the total weight of the balancing weights 4 needs to be increased, the width of the bottom of the balancing groove 3 can be increased to achieve the purpose of placing double rows or even three rows of balancing weights 4 in the balancing groove 3, one or more sets of supporting plates 2 and balancing grooves 3 can be added on the composite geomembrane 1, and the balancing weights 4 are placed in the balancing grooves 3 to increase the integral flatness and the falling force; when only the composite geomembrane 1 is used, the weight of the balancing weight 4 is not less than 60kg, if the composite geomembrane 1 is covered on the GCL, the weight of the balancing weight 4 can be properly reduced, but not less than 30kg; the support plates 2 and the counterweight grooves 3 can be installed at a construction site, thereby facilitating material transportation on the one hand, and determining the widths of the composite geomembrane 1, the support plates 2 and the counterweight grooves 3 according to the width of the groove on the other hand.
The composite geomembrane 1 is transformed into a composite member of the composite geomembrane 1, and the composite geomembrane 1 can be vertically and straightly installed in a controllable state by means of a fixed or movable unreeling machine capable of controlling speed and lifting;
as shown in fig. 1, the composite geomembrane 1 is wound on a hard roll core with certain strength and is fixedly connected with the roll core by a clamp or a rivet; if a paper tube winding core is adopted, the wall thickness is not less than 12mm, one or more rows of rivets are adopted for anchoring, or the clamps are used for fixing, and the distance between the clamps is not more than 50cm; if a plastic pipe is adopted, the wall thickness is not less than 2mm; in order to ensure effective fixation, the distance between the clamping hoops is not more than 50cm; if a steel pipe is adopted, the wall thickness is not less than 1mm; in order to ensure effective fixation, the distance between the hoops is not more than 50cm;
measuring the lowering depth by using a detection rope 51, binding a magnet at the bottom of the detection rope 51, adsorbing the magnet on the short side of the bottommost counterweight groove 3, lowering the composite geomembrane 1 to a preset position, and lowering joint boxes at two sides of the composite geomembrane 1 to make the composite geomembrane 1 adhere to the wall; the detection rope 51 can be pulled up after at least one joint box is lowered.
The composite geomembrane 1 is overlapped to form a continuous anti-seepage system, the overlapping width is not less than 45cm, in the lowering process, a sealant is coated in the overlapping area 9, so that the sealing effect is achieved on one hand, and the lubricating effect is achieved on the other hand, so that the composite geomembrane 1 is prevented from being damaged by a lowering connector box; the sealant is a colloid mainly comprising bentonite, and clay and water are properly added and stirred uniformly; the width of the joint box is not less than the lap joint width, the length is 4-6 cm less than the width of the groove body, and the depth is 1.0m greater than the groove depth; typically, the composite geomembrane 1 is inserted into a joint box at both ends.
In general, the environment-friendly seepage-proofing requirement can be met by laying the composite geomembrane 1 on one side of the tank wall, but according to different seepage-proofing grades, the composite geomembrane 1 can be vertically laid on both sides of the tank wall so as to further improve the seepage-proofing grade of the composite vertical barrier;
as shown in fig. 3 to 5, in order to conveniently retrieve and use the detection assembly, the depth detection assembly 5 is now configured to include an electromagnet 54, a housing, and a winding portion, the electromagnet 54 and the winding portion are respectively and fixedly installed in the two sets of mounting cavities 52, then the bobbin 59 is rotatably sleeved on the two sets of mounting cavities 52, and it is required to ensure that the two sets of mounting cavities 52 can move relative to the axis of the bobbin 59, that is, the two sets of mounting cavities 52 can extrude the bobbin 59 to increase friction force, and a power supply 8 and a counterweight 4 are further respectively fixed in the housing, the power supply 8 respectively supplies power to the electromagnet 54 and the driving motor 56, and a controller is further provided to timely receive external control information and control on/off of the power supply 8. The power supply 8 for supplying power to the electromagnet 54 and the drive motor 56 needs to be separately provided to prevent the electric wire from passing through the bobbin 59.
As shown in fig. 4, the winding portion includes a driving motor 56, a driving gear 58 and a transmission gear 591, the driving gear 58 is slidably sleeved on the transmission shaft 561, the limiting spring 53 is interposed between the transmission shaft 561 and the driving gear 58 for enabling the driving gear 58 and the transmission gear 591 to be engaged with each other under the elastic force of the limiting spring 53, the output end of the driving motor 56 is connected with the transmission shaft 561 to drive the transmission shaft 561 to rotate, the transmission shaft 561 is rotatably disposed on a mounting housing through a transmission frame 562, and the transmission gear 591 is fixedly disposed inside the bobbin 59.
As shown in fig. 3 and 4, the attracting magnet is an electromagnet 54, the driving gear 58 is made of magnetic material, such as iron, cobalt, nickel, a magnetic pressing block 521 is slidably disposed on the mounting housing away from one end of the attracting magnet to press against the bobbin 59 to increase friction, and the magnetic force of the electromagnet 54 on the driving gear 58 is greater than the elastic force of the limiting spring 53 on the driving gear 58 and the directions are opposite. Therefore, when the electromagnet 54 is electrified and works, the driving gear 58 and the magnetic pressing block 521 on the mounting shell far away from one end of the adsorption magnet are dragged and pulled in the direction close to one end of the electromagnet 54 by the generated magnetic adsorption force, and because the magnetic force on the driving gear 58 is greater than the elastic force of the limiting spring 53 on the driving gear 58 and the directions are opposite when the electromagnet 54 works, the driving gear 58 compresses the spring to separate teeth on the driving gear from teeth on the transmission gear ring 591 so as to be disengaged, at the moment, the winding drum 59 can transmit freely, but simultaneously, the magnetic pressing block 521 on the mounting shell far away from one end of the adsorption magnet is also influenced by the magnetic force, so that the magnetic pressing block 521 can appropriately extrude the side wall of the winding drum 59 so as to increase the friction force, thereby the rotating speed of the winding drum 59 can be limited when the winding drum is unwound, and the situation that the detection rope 51 is prevented from being over-unwound by the winding drum 59 is avoided.
As shown in fig. 3 and 4, when the bobbin 59 performs a paying-off movement, that is, when the electromagnet 54 is powered on to operate, the transmission ring gear 591 is separated from the driving gear 58 without affecting each other, and in addition, the magnetic pressing block 521 presses the rotating bobbin 59 to increase friction force, so that certain resistance limitation is generated during paying-off, the transmission ring gear 591 is not easy to cause over-rotation, normal paying-off of the detection rope 51 is ensured, and the condition that too much paying-off causes random knotting is prevented. When the winding needs to be performed, that is, under the condition that the electromagnet 54 is powered off and demagnetized, the driving gear 58 is pushed to the driving gear ring 591 under the elastic force of the limiting spring 53, at this time, the driving gear ring 591 is meshed with the driving gear 58, the driving motor 56 rotates to drive the driving gear 58 to rotate, and further the winding reel 59 is driven to perform automatic winding, and meanwhile, because the two sets of mounting housings eliminate the extrusion force of the magnetic force on the winding reel 59 rotatably arranged on the mounting housings, the winding reel 59 rotates more easily.
Be provided with sensor 57 on spacing frame 55 and be used for detecting the length of receiving and releasing of exploration rope 51, can real-time supervision exploration rope 51 the length of emitting through setting up sensor 57, and send data real-time feedback to ground personnel's control terminal department, when falling to appointed length, the staff can control the power 8 outage of electro-magnet 54 in order to demagnetize through control terminal, the detection subassembly can be in free state by coming off on the counter weight groove 3 this moment, then drive bobbin 59 rotation at control driving motor 56 work and realize automatic receipts line operation, stop receiving the line when waiting to receive the assigned position, very big improvement the convenience of construction from this.
The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.
Claims (6)
1. The depth detection assembly for the construction of the anti-seepage barrier is characterized by comprising an adsorption magnet, a shell, a winding part and a detection rope (51), wherein the adsorption magnet and the winding part are fixedly arranged in the shell, the gravity center of a depth detection assembly (5) is ensured to be coincided with the geometric center of the shell, the detection rope (51) is fixed on the adsorption magnet, the adsorption magnet is fixedly adsorbed on a counterweight groove (3) for lowering a composite film layer, and the winding part is used for winding and unwinding the detection rope (51); the shell comprises two groups of mounting cavities (52), a winding drum (59) and a limiting frame (55), the limiting frame (55) is connected between the two groups of mounting cavities (52), the two groups of mounting cavities (52) are respectively and rotatably arranged at two ends of the winding drum (59), the adsorption magnet and the winding part are respectively and fixedly mounted in the mounting cavities (52), and the winding part drives the winding drum (59) to rotate; the winding part comprises a driving motor (56), a driving gear (58), a transmission shaft (561), a limiting spring (53) and a transmission gear ring (591), the driving gear (58) is slidably sleeved on the transmission shaft (561), the limiting spring (53) is clamped between the transmission shaft (561) and the driving gear (58) and used for enabling the driving gear (58) and the transmission gear ring (591) to be meshed with each other, the driving motor (56) drives the transmission shaft (561) to rotate, and the transmission gear ring (591) is fixedly arranged inside the winding drum (59); the adsorption magnet is an electromagnet (54), the driving gear (58) is made of magnetic materials, and a magnetic pressing block (521) is arranged on the mounting shell far away from one end of the adsorption magnet in a sliding mode and is used for pressing the winding drum (59) to improve friction;
when the electromagnet (54) is electrified to work, the driving gear (58) and the magnetic pressing block (521) on the mounting shell far away from one end of the adsorption magnet body can be dragged and pulled towards one end close to the electromagnet (54) by the generated magnetic adsorption force, the magnetic force on the driving gear (58) when the electromagnet (54) works is larger than the elastic force of the limiting spring (53) on the driving gear (58) and opposite in direction, and the driving gear (58) can compress the spring to enable teeth on the driving gear to be separated from teeth on the transmission gear ring (591) so that the winding drum (59) can rotate freely;
when the wire is required to be wound, the electromagnet (54) is powered off and demagnetized, the driving gear (58) is pushed to the transmission gear ring (591) under the action of the elastic force of the limiting spring (53), the transmission gear ring (591) is meshed with the driving gear (58), the driving motor (56) rotates to drive the driving gear (58) to rotate, and then the winding drum (59) is driven to start automatic wire winding;
and a sensor (57) is arranged on the limiting frame (55) and used for detecting the retraction length of the detection rope (51).
2. The construction method of the anti-seepage barrier is characterized by comprising the following construction steps:
1) Forming a blocking groove in a region needing blocking;
2) Laying a composite film layer below at least one side of the barrier groove;
3) The depth detection assembly for construction of the anti-seepage barrier is used for monitoring and controlling the composite film layer to be lowered to a preset depth based on the depth detection assembly for construction of the anti-seepage barrier of claim 1, and recovering the depth detection assembly;
4) Lowering the joint box to form a pouring space surrounded by the joint box, the composite film layer, the side wall of the barrier groove and the bottom surface;
5) And filling a blocking material into the pouring space to form a blocking wall, and reinforcing the composite film layer again.
3. The method of claim 2, wherein the step of reinforcing the composite film layer comprises:
1) Backfilling operation is carried out in the pouring space in a manner of pouring by adopting an underwater guide pipe, and pouring is stopped when the barrier material to be poured and filled reaches the top of the barrier groove;
2) Removing the upper soft soil layer;
3) Laying the composite film layer of the outer leakage part on the side wall of the opposite side and the top of the poured separation wall to form a primary bend;
4) And continuously filling the blocking material into the newly formed pouring space again to form a press-fixing part for pressing the composite film layer.
4. The method of claim 3, wherein the step of consolidating the composite membrane layer is performed at least once throughout the filling process.
5. The method of claim 4, wherein the bottom surface of the press-fixing part has a height higher than the highest height of the blocked object.
6. An impermeable barrier construction method according to claim 5, characterised in that a sealant is applied in the overlapping zone (9) of the composite film layer for sealing the overlapping zone (9) of the composite film layer.
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