CN212714828U - Rubbish heap body soil and rock retaining dam reinforcing system - Google Patents
Rubbish heap body soil and rock retaining dam reinforcing system Download PDFInfo
- Publication number
- CN212714828U CN212714828U CN202021430011.0U CN202021430011U CN212714828U CN 212714828 U CN212714828 U CN 212714828U CN 202021430011 U CN202021430011 U CN 202021430011U CN 212714828 U CN212714828 U CN 212714828U
- Authority
- CN
- China
- Prior art keywords
- pile
- reinforcing
- dam
- anchor
- reinforcing structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The utility model relates to a municipal solid waste landfill construction technical field, concretely relates to rubbish heap body earth and rock retaining dam reinforcement system, rubbish heap body earth and rock retaining dam reinforcement system is including arranging in earth and rock retaining dam and closing on the stake anchor reinforced structure of rubbish heap side to and arrange the reinforcing structure in the stake anchor reinforced structure outside, reinforcing structure includes a plurality of friction piles, and the top of a plurality of friction piles is provided with the crown beam, reinforcing structure with stake anchor reinforced structure connects into monolithic structure, adopts the dual recombination of stake anchor reinforced structure and reinforcing structure to close up the reinforcement form, has avoided adopting single reinforcement form to take place unstability, the risk of dam break under the damage condition, thereby guarantees the reinforcement effect.
Description
Technical Field
The utility model relates to a municipal solid waste landfill construction technical field, concretely relates to rubbish pile body soil and rock retaining dam reinforcing system.
Background
In recent years, with the continuous stacking of garbage stacks in urban domestic garbage landfill sites in China, unstable landslide accidents of the garbage stacks enter a high-incidence period, nearly 10 landslide accidents of the garbage stacks occur in the landfill sites in Chongqing, Shanxi, Zhejiang, Shanghai, Jiangsu, Sichuan, Shaanxi, Guangdong and the like, 35 people die in total, large-area pollution to the surrounding environment is caused, and economic loss cannot be estimated.
The reasons of landslide accidents of the garbage dump bodies are manifold, and the landslide accidents are mainly influenced by various external environments and internal factors, on one hand, the garbage dump body dam constructed and designed in the early stage is only an earth-rock dam formed by tamping clay and broken stones, the construction running time is long, the running time of most garbage landfill sites exceeds twenty years, and the problem that the load capacity seriously exceeds the standard exists; on the other hand, an operation road is constructed and designed on the garbage dump body, the transport vehicle generates continuous disturbance on the garbage dump body, and the garbage dump body is still subjected to garbage landfill every day and is continuously extruded; moreover, the sedimentation and scaling of the garbage stack body affect a percolate guide and discharge system in the stack body, so that the water level of percolate in a landfill is very high. Due to the influence of the reasons, the garbage dump and the dam have extremely high instability and dam break risks at any time.
At present, the reinforcing method for resisting the instability risk of the common earth and rock dam mainly comprises unloading and weight reduction of an active sliding section, grouting reinforcement of a dam body, back pressure reinforcement of a toe and the like. However, the method is not suitable for reinforcing the soil and stone dam of the garbage dump in the municipal solid waste landfill, and the reasons are as follows:
(1) the internal composition and stress conditions of the garbage pile are very complicated, and the unloading and weight reduction can not be directly carried out;
(2) peripheral buildings and pipelines of the garbage pile are distributed densely, the construction land can not meet the requirement of large-area toe backfill construction, and if only the dam body is subjected to grouting reinforcement, the reinforcement effect can not be guaranteed.
In conclusion, how to reinforce the earth-rock dam of the garbage dump, which has a high height (greater than 80 m) and a high instability risk, of the garbage dump in the urban domestic garbage landfill site becomes a technical problem facing a plurality of urban domestic garbage landfill sites.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: the reinforcing system has the advantages of small risk, simplicity, practicability, convenience and practicability, and the reinforcing structure has the advantages of safe construction and short construction period, can thoroughly reinforce the soil-rock dam of the garbage pile, has great popularization and application values, and has remarkable economic benefit and social benefit.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a rubbish heap body soil and rock retaining dam reinforcement system, is including arranging in the soil and rock retaining dam and closing on the stake anchor reinforced structure of rubbish heap side, and arrange the reinforcing reinforced structure in the stake anchor reinforced structure outside, reinforcing reinforced structure includes a plurality of friction pile, and is a plurality of the top of friction pile is provided with the crown beam, reinforcing reinforced structure with stake anchor reinforced structure connects into monolithic structure.
The reinforcing structure is arranged on the earth and rock dam outside the garbage dump body, so that the damage to the current situation of the garbage dump body is avoided, the disturbance to the garbage dump body is reduced to the maximum extent, and the stability of the garbage dump body is ensured;
because the urban domestic garbage landfill is generally not far away from urban living areas, and more garbage disposal facilities are arranged around the garbage landfill, the buildings and pipelines around the garbage dump are distributed densely, the construction land can not meet large-area slope toe backfill construction, and a reinforcing structure is arranged on the earth and rock dam, so that the problem is completely solved, the construction can be completed only by building a construction platform on the dam, the reinforcing requirement is met, meanwhile, the facilities such as the buildings, the pipelines and the like are well protected, the disturbance or reconstruction of the facilities is avoided, and the urban domestic garbage landfill has the advantages of small risk, simplicity, practicability, convenience and practicability.
According to the scheme, a double-combination reinforcing mode of a pile anchor reinforcing structure and a reinforcing structure is adopted, so that the risks of instability and dam break caused by a single reinforcing mode under the condition of damage are avoided, and the reinforcing effect is ensured;
the pile anchor reinforcing structure is connected with the reinforcing structure to form an integral permanent reinforcing structure, so that the integral reinforcing performance of the garbage heap soil and rock dam is improved, the condition that the garbage heap soil and rock dam cannot be reinforced because each grouting part is independently reinforced in a dam grouting reinforcing mode is avoided, the garbage heap soil and rock dam is thoroughly reinforced, and the reinforcing performance is ensured.
As the utility model discloses an optimal scheme, stake anchor reinforced structure includes a plurality of friction piles, every the friction pile top is provided with crown beam, adjacent two set up even roof beam between the crown beam and connect, every fixedly connected with anchor rope on the friction pile.
A plurality of friction pile arranges along the dam body length direction of rubbish heap body soil stone retaining dam to form whole reinforcement on soil stone retaining dam transversely, set up the crown beam at friction pile's top, connect through even roof beam between the crown beam, thereby couple together every friction pile, make a plurality of friction pile structures form whole reinforced structure, improve and consolidate the effect.
The pile anchor reinforcing structure comprises a plurality of anti-slide piles, each anti-slide pile is connected with an anchor rope, the anchor rope is anchored on the upper side (pile back side) of the anti-slide pile, namely close to one side of a garbage pile body, one end of the anchor rope is connected in a mountain body, the other end of the anchor rope is connected to the pile top of the anti-slide pile, prestress is applied to the anti-slide pile in the anchor rope, the anti-slide pile body is stressed through the pile body, thrust bearing the garbage pile body is achieved, the pre-stress anchor rope is installed on the pile top of the anti-slide pile, the anti-slide pile and the anchor rope act together to form an integral structure, and large-tonnage prestress is applied to the anchor rope, so that the pile body of the anti-slide pile body is pressed against the garbage.
As the preferred scheme of the utility model, reinforcing structure includes multirow friction pile, every row the hat roof beam at friction pile top all connects into whole through linking the roof beam.
Arrange multirow friction pile, every row of friction pile all forms to the earth and rock retaining dam and supports and consolidate to guarantee the stability of rubbish heap body, further increased reinforcing structure's safety and stability, in addition, as the reinforcing structure of one of the double combination reinforcing form, arrange the stability that multirow friction pile can reinforcing structure self, and then guarantee stability, reliable, the safety of whole rubbish heap body earth and rock retaining dam reinforcing system.
As the preferred scheme of the utility model, reinforcing and strengthening structure's hat roof beam with be provided with the multichannel even roof beam between stake anchor reinforcing structure's the hat roof beam.
The top beam of the reinforcing structure is connected with the top beam of the pile anchor reinforcing structure through the connecting beam, so that the reinforcing structure is connected with the pile anchor reinforcing structure into an integral reinforcing structure, a plurality of connecting beams are arranged, the reinforcing structure is firmly connected with the pile anchor reinforcing structure, the pile anchor reinforcing structure which is close to a garbage pile body is prevented from being separated from the pile anchor reinforcing structure to form a main stress structure, and the structural safety of the integral reinforcing structure is ensured.
As the preferred scheme of the utility model, be provided with the panel between the roof beam even of roof beam is covered to stake anchor reinforced structure's the roof beam, reinforcing and strengthening structure's the roof beam and the roof beam is covered to the multichannel connection reinforcing and strengthening structure.
Set up the panel and seal between stake anchor reinforced structure's hat roof beam and reinforcing reinforced structure's hat roof beam, even roof beam, make rubbish heap body soil and rock retaining dam system further form monolithic structure, set up the panel, can avoid rainwater and flood to permeate the reinforcing system in, lead to the destruction to stake anchor reinforced structure and reinforcing reinforced structure, can effectively keep reinforcing system stability, improve rubbish heap body soil and rock retaining dam reinforcing system's life.
As the utility model discloses an optimal scheme, stake anchor reinforced structure's hat roof beam strengthen reinforced structure's hat roof beam, be used for connecting stake anchor reinforced structure hat roof beam and strengthen reinforced structure hat roof beam even roof beam and the reinforcing bar has been put to the equipartition in the panel, and the reinforcing bar at all positions even as an organic whole.
Pouring reinforcing steel bars are uniformly arranged in the top beam of the pile anchor reinforcing structure, the top beam of the reinforcing structure, the connecting beam and the panel, the reinforcing steel bars at the four positions are connected into a whole structure, the bonding force of the pile anchor reinforcing structure and the reinforcing structure can be enhanced by the mode, a garbage pile body earth and rock dam reinforcing system with an integral structure is formed, the stability of the garbage pile body earth and rock dam is further improved, and major dangerous situations such as instability, dam break and the like can be effectively avoided.
Correspondingly, the application also provides a construction method of the reinforcement system of the earth and rock dam of the garbage heap body, and when the reinforcement system of the earth and rock dam of the garbage heap body is constructed, the construction process comprises the following steps:
step a, reducing and maintaining the percolate in the garbage pile below a warning water level, temporarily moving and modifying drainage facilities and various pipelines in the peripheral range of the original dam body, and arranging an anti-slide pile construction platform;
b, constructing a pile anchor reinforcing structure, wherein the pile anchor reinforcing structure comprises a construction slide-resistant pile, a crown beam is arranged at the pile top of the slide-resistant pile, and an anchor cable is anchored and connected to the slide-resistant pile;
c, constructing a reinforced structure, namely constructing the anti-slide pile by adopting a mode of manual hole digging, circulation and pile-separating jumping and digging;
d, pre-embedding reinforcing steel bars, namely, crown beam reinforcing steel bars of the reinforcing structure and the pile anchor reinforcing structure, connecting beam reinforcing steel bars connected between the crown beam of the reinforcing structure and the crown beam of the pile anchor reinforcing structure, and panel reinforcing steel bars between the pre-embedded crown beam and the connecting beam, connecting the crown beam reinforcing steel bars, the connecting beam reinforcing steel bars and the panel reinforcing steel bars into an integral structure, and then closing a mold and pouring concrete;
and e, recovering the temporarily moved and modified drainage facilities and various pipelines, and constructing a framework slope protection on the downstream slope of the dam body.
The pile anchor reinforcing structure is constructed on the earth and rock dam outside the garbage pile body, then the reinforcing structure is constructed, the reinforcing steel bars are embedded in advance and concrete is poured in the step d, the reinforcing structure and the pile anchor reinforcing structure are connected into an integral reinforcing system, the risks of instability and dam break under the condition of damage in a single reinforcing mode are avoided, and the reinforcing effect is guaranteed; after the reinforcing structure and the pile anchor reinforcing structure are connected to form the integral permanent reinforcing structure, the integral reinforcing performance of the garbage dump earth and rock retaining dam is improved, the condition that the reinforcing integrity cannot be formed due to independent reinforcement of each grouting part in a dam grouting reinforcing mode is avoided, the garbage dump earth and rock retaining dam is thoroughly reinforced, and the reinforcing performance is guaranteed.
And this kind of construction pile anchor reinforced structure in the dam first, and then the outside of pile anchor reinforced structure construction reinforcing structure's mode has avoided the destruction to rubbish heap body current situation, has reduced the disturbance to rubbish heap body to the at utmost to guarantee rubbish heap body's stability, avoided producing the disturbance to rubbish heap body, have that the risk is little, simple and easy and convenient and practical's advantage.
The application also provides another kind of rubbish heap body soil and rock retaining dam reinforcement system's construction method, when consolidating the construction to rubbish heap body soil and rock retaining dam in the front, construct earlier stake anchor reinforced structure, including construction friction pile, friction pile crown beam and anchor rope, put into use rubbish heap body soil and rock retaining dam after the completion to continuously go on, when rubbish heap body soil and rock retaining dam satisfies the condition of consolidating once more, consolidate once more according to following step:
step a, reducing and maintaining the percolate in the garbage pile below a warning water level, temporarily moving and modifying drainage facilities and various pipelines in the peripheral range of the original dam body, and arranging an anti-slide pile construction platform;
b, constructing a reinforced structure, namely constructing the anti-slide pile by adopting a mode of manual hole digging, circulation and pile-separating jumping and digging, and pre-burying a crown beam steel bar at the top of the anti-slide pile;
d, planting ribs on the original crown beam of the pile anchor reinforcing structure, connecting the ribs with the crown beam reinforcing steel bar of the reinforcing structure, and closing a mold to pour concrete;
and e, recovering the temporarily moved and modified drainage facilities and various pipelines, and constructing a framework slope protection on the downstream slope of the dam body.
When the reinforcing construction is carried out on the garbage heap soil and rock dam, the single pile anchor reinforcing structure can also reinforce the dam body, so that the dam body is ensured to be in a stable and safe state within a certain time range, the condition of continuous use is completely met, and the reinforcing cost of the dam body can be effectively reduced by the mode;
adopt solitary stake anchor reinforced structure to the dam body reinforcement back, continue to monitor under the rubbish heap body soil stone dam continuation of use state, because rubbish heap body top is still carrying out the landfill, cause continuous applying pressure to the rubbish heap body, simultaneously, the heap body subsides, the inside leachate drainage guide system of heap body is influenced in the scale deposit, so that the leachate water level is very high in the landfill yard, and, the anchor rope is after the primary reinforcement, can have certain creep, laxity in the use, when the safety in utilization of rubbish heap body soil stone dam is influenced to these circumstances, need consolidate once more. The re-consolidation conditions include one or more of the following: firstly, monitoring the displacement of the earth and rock dam of the garbage dump, and when the displacement is greater than a set early warning value in a certain period of time; secondly, the anchor cable in the pile anchor reinforcing structure is loosened and fails, and the anti-slide pile becomes a cantilever structure and is difficult to continue to play a reinforcing role; and thirdly, when other dangerous situations occur, the reinforced structure is constructed again.
The reinforcing method is carried out in a staged mode, so that the construction cost can be effectively reduced, the dam body is guaranteed to be in a stable and safe state all the time, the service life of the earth and rock retaining dam of the garbage pile body can be greatly prolonged, the garbage pile body is guaranteed to be fully degraded, the state of returning to nature is achieved, the reinforcing structure is reinforced through construction, the reinforcing structure and the original pile anchor reinforcing structure are connected into a whole, a reinforcing system with larger volume and better support performance is formed, the earth and rock retaining dam of the garbage pile body can be thoroughly reinforced, the reinforcing method has higher popularization and application values, and remarkable economic benefits and social benefits are achieved.
And e, the skeleton slope protection in the step e is a diamond skeleton slope protection.
As the utility model discloses an optimal scheme, reinforcing and strengthening structure includes multirow friction pile, when the reinforcing and strengthening structure is under construction in step b, is under construction with the branch circulation, the mode of digging is jumped apart to multirow friction pile simultaneously to pile bolck crown beam reinforcing bar, even roof beam reinforcing bar and crown beam and the even panel reinforcing bar that forms between the roof beam between ligature multirow friction pile.
Arrange multirow friction pile, enlarge reinforcing structure's support range, improve reinforcing structure's stress state to guarantee the stability of rubbish heap body, further increased reinforcing structure's safety and stability, in addition, as the reinforcing structure of one of the double combination reinforced form, arrange the stability that multirow friction pile can reinforcing structure self, and then guarantee stability, reliable, the safety of whole rubbish heap body earth and rock dam reinforcing system. The construction in the modes of circulation and pile-separating jumping excavation can avoid collapse and ensure the construction safety.
As the utility model discloses an optimal scheme, reinforcing and strengthening structure's hat roof beam with be provided with the multichannel between stake anchor strengthening structure's the hat roof beam even roof beam, multichannel even set up the panel between roof beam and reinforcing and strengthening structure's the hat roof beam and stake anchor strengthening structure's the hat roof beam, the reinforcing bar of ligature this part panel in step d to pour the concrete.
The reinforced structure and the pile anchor reinforced structure are constructed in the mode, so that the consolidation of the soil-rock retaining dam of the garbage heap body forms a system, and the safety of the dam body is thoroughly ensured.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. according to the scheme, a double-combination reinforcing mode of a pile anchor reinforcing structure and a reinforcing structure is adopted, so that the risks of instability and dam break caused by a single reinforcing mode under the condition of damage are avoided, and the reinforcing effect is ensured; the pile anchor reinforcing structure is connected with the reinforcing structure to form an integral permanent reinforcing structure, so that the integral reinforcing performance of the garbage heap soil and rock dam is improved, the condition that each grouting part is independently reinforced and cannot form a reinforcing whole body in a dam grouting reinforcing mode is avoided, the garbage heap soil and rock dam is thoroughly reinforced, and the reinforcing performance is ensured;
2. the reinforcing structure is arranged on the earth and rock dam outside the garbage dump body, so that the damage to the current situation of the garbage dump body is avoided, the disturbance to the garbage dump body is reduced to the maximum extent, and the stability of the garbage dump body is ensured;
3. in addition, as a reinforcing structure in one of double combination reinforcing forms, the arrangement of the multiple rows of anti-slide piles can enhance the stability of the reinforcing structure, so that the stability, reliability and safety of the whole reinforcing system of the earth and rock dam of the garbage pile body are ensured;
4. the reinforcing method is used for reinforcing in a staged mode, so that the construction cost can be effectively reduced, the dam body is guaranteed to be in a stable and safe state all the time, the service life of the earth and rock retaining dam of the garbage pile body can be greatly prolonged, the garbage pile body is guaranteed to be fully degraded, the state of returning to nature is achieved, the reinforcing structure is reinforced through construction, the reinforcing structure and the original pile anchor reinforcing structure are connected into a whole, a reinforcing system with larger volume and better support performance is formed, the earth and rock retaining dam of the garbage pile body can be thoroughly reinforced, the reinforcing method has larger popularization and application values, and remarkable economic benefits and social benefits are achieved.
Description of the drawings:
fig. 1 is a structural position diagram of a garbage dump earth-rock dam.
Fig. 2 is the utility model discloses a structural schematic diagram of rubbish heap body earth and rock retaining dam reinforcing system cross-section position.
Fig. 3 is the utility model discloses a structural schematic diagram of rubbish heap body soil and rock retaining dam reinforcing system side slope position.
Fig. 4 is a partially enlarged view of a portion a in fig. 2.
The labels in the figure are: i-a garbage heap, II-a soil-rock dam, II-1-an upstream part, II-2-a downstream part, III-a dry masonry arris body, IV-a grit chamber, V-a slurry masonry dam upstream of a pretreatment tank, VI-a pretreatment tank, 1-a pile anchor reinforcing structure, 2-a reinforcing structure, 3-a slide-resistant pile, 4-a crown beam, 5-an anchor cable, 6-a connecting beam, 7-a panel, 8-a slurry masonry retaining wall, 9-a framework slope protection, 10-a flood discharge ditch, 11-a counterfort, 12-a drainage channel and 13-a slurry injection reinforcing structure.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1
An earth and rock dam structure of a garbage heap body constructed and designed in an early stage is shown in figure 1 and comprises an earth and rock dam II, wherein a garbage heap body I is arranged above the earth and rock dam II, a downstream part of the earth and rock dam II is a dry rock ridge body III piled manually, the earth and rock dam II is used as a blocking structure of the garbage heap body I and used for blocking the garbage heap body I at a fixed position, the earth and rock dam II comprises an upstream part II-1 and a downstream part II-2, the upstream part II-1 and the downstream part II-2 both extend obliquely towards the bottom of the earth and rock dam II to form a certain gradient (the upstream gradient is between 1:2.5 and 1:3, the downstream gradient is about 1: 2), the upstream part II-1 is a sub-clay homogeneous dam, the downstream part II-2 is mechanically compacted and filled, percolate generated in the garbage heap body I is led to a treatment plant at the downstream of the earth and rock dam structure of the garbage heap body for treatment, including pretreatment pond VI, pretreatment pond VI upper reaches are provided with pretreatment pond upper reaches grout stone masonry dam V, further guarantee the safety of refuse treatment plant, pretreatment pond upper reaches grout stone masonry dam V all is located the III low reaches of dry masonry arris body with pretreatment pond VI, set up grit chamber IV between dry masonry arris body III and pretreatment pond upper reaches grout stone masonry dam V, this grit chamber IV is arranged in the silt of sneaking into in the settlement separation filtration liquid to guarantee the equipment safety of refuse treatment plant. Along with the accumulation of the running time of a refuse landfill, the continuous landfill and accumulation of a refuse pile and the disturbance of a road above the refuse pile, the earth-rock dam of the refuse pile has serious dangerous situations of instability, dam break and the like.
To the problem that the rubbish heap body soil and rock retaining dam of above-mentioned structure exists, this embodiment provides a reinforcement system of rubbish heap body soil and rock retaining dam, as shown in fig. 2-4, this reinforcement system arranges in soil and rock retaining dam II, including arranging in soil and rock retaining dam II and close on I side of rubbish heap body stake anchor reinforced structure 1 to and arrange the reinforcing structure 2 in the stake anchor reinforced structure 1 outside, reinforcing structure 2 with stake anchor reinforced structure 1 connects into monolithic structure, constitutes rubbish heap body soil and rock retaining dam reinforcement system.
Specifically, the method comprises the following steps: the pile anchor reinforcing structure 1 comprises a plurality of slide-resistant piles 3 vertically arranged in an earth and rock dam II, the slide-resistant piles 3 are arranged along the length direction of the dam body of the earth and rock dam of the garbage heap, thereby forming the transverse integral reinforcement of the earth-rock dam II, embedding the bottom of the pile body of each anti-slide pile 3 into the medium-stroke sandstone of the mountain, connecting the top of each anti-slide pile 3 with a crown beam 4, wherein the pile anchor reinforcement structure 1 also comprises an anchor cable 5, the anchor cable 5 is anchored at the back side of the anti-slide pile 3, one end of the anchor cable 5 is fixedly connected with the pile top of the anti-slide pile 3, the other end of the anchor cable 5 is anchored in the middle gasified sandstone below the instability area, the anti-slide piles 3 and the anchor cables 5 form an integral structure to jointly act on the earth-rock dam II, prestress is applied when the anchor cables 5 are anchored, the pile bodies of the anti-slide piles 3 form a reinforcing structure of 'active back pressure' on the dam body, and the magnitude of the prestress is determined and adjusted according to the volume and design of the garbage pile body 1;
the reinforced structure 2 comprises a plurality of anti-slide piles 3 which are vertically arranged, the upper parts of pile bodies of the anti-slide piles 3 extend out of the surface of an earth-rock dam II, the bottom parts of the pile bodies are embedded into middle weathered sandstone of a mountain, the structural form is adopted, on one hand, the dam body is stabilized by means of the earth arch effect formed by the upper stressed section of the anti-slide piles 3 and the frictional resistance between pile back soil body and the two sides of the pile, on the other hand, the pile bodies are transmitted to the rock-rock body with the stable lower part through the pile bodies, so that the garbage pile body I is stabilized and balanced, the aim of reinforcing the earth-rock dam II is achieved, the top part of each anti-slide pile 3 is connected with a crown beam 4, a connecting beam 6 is connected between the crown beams 4 of two adjacent anti-slide piles 3, the anti-slide piles 3 form an integral structure, a connecting beam 6 is arranged between the reinforced structure 2 and the pile anchor reinforced structure 1, and the reinforced structure 2 are connected into the, preferably, the coupling beam 6 is arranged between the crown beam 4 of the reinforcing and strengthening structure 2 and the crown beam 4 of the pile anchor strengthening structure 1, and in other embodiments, the coupling beam 6 may be arranged between the slide pile 3/crown beam 4 of the reinforcing and strengthening structure 2 and the slide pile 3 and/or crown beam 4 of the pile anchor strengthening structure 1. The reinforcing structure 2 and the pile anchor reinforcing structure 1 are connected into an integral reinforcing structure through the connecting beam 6, and the structural safety of the integral reinforcing structure is ensured.
As shown in fig. 3, a connecting beam 6 is arranged between the top beams 4 at the tops of two adjacent slide-resistant piles 3 in the pile anchor reinforcing structure 1, and the slide-resistant piles 3 are connected by the connecting beam 6, so that the plurality of slide-resistant piles 3 form an integral reinforcing structure, and the reinforcing effect is improved. In other embodiments, the pile anchor reinforcing structure 1 may also adopt other reinforcing methods, for example, slide-resistant piles 3 and crown beams 4 connected to the reinforcing structure 2 are disposed at two ends of the earth-rock dam ii in the transverse direction, and other mature seepage-proofing reinforcing methods such as grouting/surface flexible seepage-proofing/concrete seepage-proofing walls are adopted in the middle of the earth-rock dam ii, and are combined with the reinforcing structure 2 to form a reinforcing system of the earth-rock dam of the refuse pile body, which is used for reinforcing the earth-rock dam.
As shown in fig. 3, reinforcing and strengthening structure 2 includes multirow friction pile 3, arrange multirow friction pile 3, every row of friction pile 3 all forms support and reinforcement to earth and rockfill dam II, guarantee the reinforcement thickness of rubbish heap body earth and rockfill dam, the safety and stability of reinforcing and strengthening structure 2 has further been increased, the top of a plurality of friction pile 3 of every row all is provided with crown's beam 4, and link roof beam 6 through between the crown's beam 4 and link as an organic whole with all friction pile 3 in every row, thereby guarantee reinforcing and strengthening structure 2 self stability, and then guarantee whole rubbish heap body earth and rockfill dam reinforcement system's stability, reliability, safety. In other embodiments, the reinforcing structure 2 may be a single row of anti-skid piles when the pressure bearing capacity of the earth and rock dam of the garbage dump is less required.
As a preferred embodiment, as shown in fig. 3, the crown beam 4 of the pile anchor reinforcing structure 1, the coupling beam 6 connected to the crown beam 4 of the pile anchor reinforcing structure 1, the crown beam 4 of the reinforcing structure 2, the coupling beam 6 connected to the crown beam 4 of the reinforcing structure 2, and the coupling beam 6 between the crown beam 4 of the pile anchor reinforcing structure 1 and the crown beam 4 of the reinforcing structure 2 are provided with panels 7 in a grid formed therebetween, and the panels 7 cover the grid to complete the grid, so that the panels 7 connect the above structures into an integral structure, which can prevent rainwater and flood from penetrating into the reinforcing system, prevent damage to the pile anchor reinforcing structure 1 and the reinforcing structure 2 due to penetration, effectively maintain the stability of the system, and improve the service life of the reinforcing system of the earth-rock dam of the refuse dump.
In order to further strengthen the pile anchor reinforcing structure 1, the reinforcing structure 2 and the connecting beam 6 arranged between the pile anchor reinforcing structure 1 and the reinforcing structure 2, reinforcing steel bars are uniformly distributed in the crown beam 4 of the pile anchor reinforcing structure 1, the crown beam 4 of the reinforcing structure 2, the connecting beam 6 and the face plate 7 at each part, and the reinforcing steel bars at all parts are connected into a whole, so that after concrete is poured and solidified, all parts form a garbage heap body earth-rock dam reinforcing system with an integral structure, the stability of the garbage heap body earth-rock dam is further improved, and major dangerous situations such as instability, dam break and the like can be effectively avoided.
As a preferred embodiment, as shown in fig. 2 and 4, the reinforcement system for the earth and rock dams of the garbage dump further includes a retaining wall 8 made of masonry stone and arranged along the contact surface between the garbage dump i and the earth and rock dam ii, the retaining wall 8 made of masonry stone is arranged at the sloping position of the earth and rock dam of the garbage dump and is located at the upstream of the reinforcement system for the earth and rock dam, and the retaining wall 8 made of masonry stone is arranged, so that on one hand, the garbage dump i at the sloping position can be effectively blocked, the garbage dump i can be prevented from collapsing, and on the other hand, leachate in the garbage dump i can be prevented from flowing down from the dam surface of the earth and rock dam ii, and environmental pollution can be avoided. The bottom of the masonry retaining wall is provided with a grouting reinforcement structure 13 for supporting and reinforcing the masonry retaining wall 8, and the grouting reinforcement structure 13 is connected with the top beam 4 of the pile anchor reinforcement structure 1.
In a preferred embodiment, the connecting beams 6 of the pile anchor reinforcing structure 1 and the reinforcing structure 2 are provided with a flood discharge trench 10, and the outer wall of the downstream side of the flood discharge trench 10 is provided with a buttress 11 for supporting the flood discharge trench 10. And the artificial layered backfill smooth transition is adopted between the flood discharge ditch 10 and the grouted stone retaining wall 8, and gravels or filling soil, planting soil and artificial turf are sequentially arranged in a backfill area from the bottom to the top.
Example 2
This embodiment provides a construction method of a reinforcement system for a landfill body earth and rock dam, as shown in fig. 2 to 4, when the reinforcement system for a landfill body earth and rock dam in embodiment 1 is constructed, the construction process includes the following steps:
step a, reducing and maintaining the infiltration liquid in the garbage pile body I below a warning water level, temporarily moving and modifying drainage facilities and various pipelines in the peripheral range of the original dam body, and arranging an anti-slide pile construction platform;
b, constructing a pile anchor reinforcing structure 1, wherein the pile anchor reinforcing structure comprises a construction slide-resistant pile 3, an anchor cable 5 is constructed on the slide-resistant pile 3, the pile top of the slide-resistant pile 3 is connected with a crown beam 4, a grouted masonry retaining wall 8 is constructed at the same time, and sleeve valve pipe grouting is carried out on the bottom of the grouted masonry retaining wall 8 to form a grouting reinforcing structure 13;
step c, constructing a reinforced structure 2, and constructing an anti-slide pile 3 in a mode of manual hole digging, circulation and pile-separating jumping digging;
d, embedding reinforcing steel bars, namely reinforcing steel bars of a top beam 4 of the reinforced structure 2 and the pile anchor reinforced structure 1, connecting steel bars of a connecting beam 6 connected between the top beam 4 of the reinforced structure 2 and the top beam 4 of the pile anchor reinforced structure 1, and reinforcing steel bars of a panel 7 between the top beam 4 and the connecting beam 6, connecting the reinforcing steel bars of the top beam 4, the connecting beam 6 and the reinforcing steel bars of the panel 7 into an integral structure, and then closing a mold to pour concrete;
and e, recovering the temporarily moved and changed drainage facilities and various pipelines in the peripheral range of the earth and rock dam II, and constructing a framework revetment 9 on the downstream slope of the dam body, wherein the framework revetment 9 is a rhombic framework revetment.
By firstly constructing the pile anchor reinforcing structure 1 on the earth and rock dam II outside the garbage pile body I and then constructing the reinforcing structure 2, and the reinforcing structure 2 and the pile anchor reinforcing structure 1 are connected into an integral reinforcing system, so that the risks of instability and dam break under the condition of damage by adopting a single reinforcing form are avoided, thereby ensuring the reinforcing effect, and after the reinforcing structure 2 and the pile anchor reinforcing structure 1 are connected to form an integral permanent reinforcing structure, the overall reinforcement performance of the earth and rock dam of the garbage heap is improved, in addition, the damage to the current situation of the garbage heap I is avoided by arranging the reinforcement system in the earth and rock dam II, the disturbance to the garbage heap I is reduced to the maximum extent, thereby ensuring the stability of the garbage pile body I, avoiding the disturbance to the garbage pile body I and having the advantages of small risk, simplicity, practicability, convenience and practicability.
As shown in fig. 3, the reinforcing structure 2 of the present embodiment includes two rows of anti-slide piles 3, a plurality of anti-slide piles 3 are arranged in each row, and in step c, when the anti-slide piles 3 are constructed in a manner of manual hole digging, circulation by circulation, pile-separated jump digging, the specific sequence is as follows:
c1, first cycle construction: constructing a first row (close to the side of the pile anchor reinforcing structure) of 2#, 4#, 6#, 8# and 10# and a second row (close to the side of the slope foot of the downstream dam body) of 11#, 13#, 14#, 16# and 18# slide-resistant piles 3, and transferring the excavated earth and stone to the slope surface framework protection slope 9 in the step e to be accumulated as back pressure;
c2, second cycle construction: after the first circulation pile forming, constructing a first row (close to the side of the pile anchor reinforcing structure) of 1#, 3#, 5#, 7#, 9# and a second row (close to the side of the slope foot of the downstream dam body) of 12#, 15#, 17# and 19# anti-slide piles 3;
since the reinforcing structure 2 of the present application comprises two rows of anti-slide piles 3, step c further comprises step c 3: after the construction of the anti-slide pile 3 of the reinforced structure 2 is completed, steel bars are bound in the top beam 4, the connecting beam 6 and the panel 7 of the reinforced structure 2, and concrete is poured on the top beam 4, the connecting beam 6 and the panel 7 of the reinforced structure 2 in a closed mold and integral mode.
And c1, transferring the excavated earthwork to the slope surface skeleton protection slope 9 in the step e to be accumulated as back pressure, so that the excavated earthwork can be effectively prevented from reducing the overall quality of the existing garbage heap earthwork dam after the excavation of the first circulation slide-resistant pile 3 is finished, and further, the construction risks such as instability and the like are caused.
Example 3
In this embodiment, when reinforcing the garbage heap soil and rock dam in embodiment 1, as shown in fig. 2-4, a pile anchor reinforcing structure 2 is constructed first, including constructing an anti-slide pile 3, a pile top crown beam 4 and an anchor cable 5, after completion, the garbage heap soil and rock dam is put into use, and comprehensive monitoring and displacement measurement are continuously performed, and when the garbage heap soil and rock dam satisfies a secondary reinforcing condition, the reinforcing is performed again according to the following steps:
step a, reducing and maintaining the infiltration liquid in the garbage pile body I below a warning water level, temporarily moving and modifying drainage facilities and various pipelines in the peripheral range of the original dam body, and arranging an anti-slide pile construction platform;
b, constructing a reinforced structure 2, constructing an anti-slide pile 3 by adopting a mode of manual hole digging, circulation and pile-separating jumping and digging, and pre-burying a crown beam 4 steel bar at the top of the anti-slide pile 3;
d, planting bars on the crown beam 4 of the original pile anchor reinforcing structure 1, wherein the minimum anchoring length is 24d, d is the diameter of the bars, the number and the spacing of the planted bars correspond to the cross section reinforcement of the coupling beam 6 between the reinforcing structure 2 and the pile anchor reinforcing structure 1, after bar planting, binding the coupling beam 6 bars between the pile top crown beams 4 of the slide-resistant piles 3 in the pile anchor reinforcing structure 1, simultaneously binding the coupling beam 6 bars between the crown beam 4 of the pile anchor reinforcing structure 1 and the crown beam 4 of the reinforcing structure 2, connecting the bars of the coupling beam 6 with the planted bars, preferably arranging a plurality of coupling beams 6 between the crown beam 4 of the reinforcing structure 2 and the crown beam 4 of the pile anchor reinforcing structure 1, arranging a panel 7 between the plurality of coupling beams 6 and the crown beam 4 of the reinforcing structure 2 and the crown beam 4 of the pile anchor reinforcing structure 1, binding the panel 7 bars, closing the mould and pouring concrete, reinforcing the reinforcing structure 7 and the pile anchor reinforcing structure 1 by adopting the mode, the consolidation of the earth and rock dam of the garbage heap forms a system, and the safety of the dam body is thoroughly ensured.
And e, recovering the temporarily moved and modified drainage facilities and various pipelines, and constructing a framework slope protection 9 on the downstream slope of the dam body.
The pile anchor reinforcing structure 1 constructed first includes the following construction contents:
firstly, constructing a pile anchor reinforcing structure 1, which comprises constructing an anti-slide pile 3, constructing the anti-slide pile 3 by adopting a pile separation jumping excavation mode, constructing a prestressed anchor cable 5 on the anti-slide pile 3, binding a crown beam 4 reinforcing steel bar at the pile top of the anti-slide pile 3, and closing a mold to pour the pile top crown beam 4;
and secondly, constructing an auxiliary structure of the pile anchor reinforcing structure 1, wherein the auxiliary structure comprises a construction masonry retaining wall 8 and a flood discharge ditch 10 arranged at the top of the pile anchor reinforcing structure 1, and the flood discharge ditch 10 is positioned at the outer side of the crown beam 4.
When the reinforcing construction is carried out on the garbage heap soil and rock dam, the single pile anchor reinforcing structure 1 can realize the function of reinforcing the dam body, ensure that the dam body is in a stable and safe state within a certain time range and can be continuously put into use;
adopt solitary stake anchor reinforced structure to the dam body reinforcement back, continue to monitor under the rubbish heap body soil stone dam continuation of use state, because rubbish heap body top still is carrying out the landfill, cause continuous applying pressure to the rubbish heap body, simultaneously, the heap body subsides, the inside leachate drainage guide system of heap body is influenced in the scale deposit to it is very high to send out the leachate water level in the landfill yard, when these circumstances influence the safety in utilization of rubbish heap body soil stone dam, need consolidate once more. The re-consolidation conditions include one or more of the following: firstly, when the displacement is greater than a set early warning value in a certain period of time; secondly, the anchor cable in the pile anchor reinforcing structure is loosened and fails, and the anti-slide pile becomes a cantilever structure and is difficult to continue to play a reinforcing role; and thirdly, when other dangerous situations occur, the reinforced structure is constructed again. In this application, adopt stake anchor reinforced structure to reinforcement back to rubbish heap body soil and stone dam, the first phase landfill slope of former planning continues planning second phase landfill, and it separates not to set up the dam between first phase landfill and the second phase landfill, along with the rubbish landfill volume in the second phase landfill, the heap height continues to increase, constantly lead to the fact the extrusion to the soil and stone dam, rubbish heap body overall state changes behind the stake anchor reinforced structure of earlier stage construction, and the anchor rope is after consolidating for the first time, can have certain creep, laxity in the use, the stake anchor reinforced structure of first time construction is covered simultaneously, the state can't be surveyed, also can't regularly inspect, maintain anchor head etc. therefore construct reinforcing structure once more.
When the reinforced reinforcing structure is constructed again, a step a0 is added before the step a: the existing water system at the top of the II dam of the earth and rockfill dam is temporarily guided and modified, an HDPE double-wall corrugated pipe is used as a drainage channel 12 for temporarily guiding and modifying, the drainage channel 12 is arranged in front of a retaining wall 8 of the masonry, reinforced concrete slabs are poured at the bottom of the drainage channel 12 after grouting reinforcement is carried out through sleeve valve pipes, a grouting reinforcement structure 13 is formed, reinforcing steel bars on two sides are respectively connected with the retaining wall 8 of the masonry and a crown beam 4 of the pile anchor reinforcement structure 1 through planting bars, and a flood discharge ditch 10 built in the construction process of the pile anchor reinforcement structure 1 is removed.
The reinforcing structure 2 of this embodiment also includes multiple rows of anti-slide piles 3, and when the reinforcing structure 2 is constructed in step b, the multiple rows of anti-slide piles 3 are constructed in a circulation-divided and pile-separated jump excavation manner, and pile top crown beam 4 reinforcing steel bars among the multiple rows of anti-slide piles 3, coupling beam 6 reinforcing steel bars, and panel 7 reinforcing steel bars formed between the crown beam 4 and the coupling beam 6 are bound, and the manner of constructing the multiple rows of anti-slide piles 3 is the same as that of embodiment 2, and will not be described herein again. Arrange multirow friction pile 3, can improve the stability of reinforcing structure 2 self, enlarge reinforcing structure 2's of reinforcing support scope, improve reinforcing structure 2's stress state to guarantee the stability of rubbish heap body, further increased reinforcing structure's safety and stability.
After the construction of the reinforcing system of the soil and stone dam of the garbage dump body is completed, a flood discharge ditch 10 is newly built on the outer side of a top beam 4 of an anti-slide pile 3 of a pile anchor reinforcing structure 1, a buttress 11 is arranged on the outer side of the flood discharge ditch 10 to reinforce and support the flood discharge ditch 10, the flood discharge ditch 10 is arranged on a connecting beam 4 of the pile anchor reinforcing structure 1 and a reinforcing structure 2, an area provided with a temporary drainage channel 12 is backfilled in an artificial layering mode, gravel or filling soil, planting soil and artificial turf are sequentially arranged in the backfilling area from the bottom to the top, so that the soil and stone retaining wall of the pile and the flood discharge ditch are in smooth transition, the compaction degree is not less than 90%, and the thickness of the planting soil is about 50 cm.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides a rubbish heap body soil and rock dam reinforcement system, its characterized in that, is including arranging in soil and rock dam (II) and close on stake anchor reinforced structure (1) of rubbish heap body (I) side, and arrange reinforcing structure (2) in stake anchor reinforced structure (1) outside, reinforcing structure (2) are including a plurality of friction pile (3), and are a plurality of the top of friction pile (3) is provided with crown beam (4), reinforcing structure (2) with stake anchor reinforced structure (1) connect into monolithic structure.
2. The rubbish dump body earth and rock dam reinforcement system according to claim 1, characterized in that the pile anchor reinforcement structure (1) comprises a plurality of slide-resistant piles (3), a top beam (4) is arranged on the top of each slide-resistant pile (3), a connecting beam (6) is arranged between two adjacent top beams (4) for connection, and an anchor cable (5) is fixedly connected to each slide-resistant pile (3).
3. A reinforcement system for a landfill body earth and rock dam according to claim 2, wherein the reinforcing structure (2) comprises a plurality of rows of anti-slide piles (3), and the top crown beams (4) of each row of anti-slide piles (3) are integrally connected by connecting beams (6).
4. A reinforcement system for a landfill body earth and rock dam according to claim 2 or 3, characterized in that a plurality of coupling beams (6) are provided between the crown beam (4) of the reinforcing structure (2) and the crown beam (4) of the pile anchor reinforcing structure (1).
5. The reinforcement system for the soil-rock dam of the refuse dump body according to claim 4, characterized in that a panel (7) is arranged between the crown beam (4) of the pile anchor reinforcement structure (1), the crown beam (4) of the reinforcement structure (2) and the connecting beam (6) of the crown beam (4) of the pile anchor reinforcement structure (1) and the multi-connection reinforcement structure (2).
6. The reinforcement system for the soil-rock dam of the refuse dump according to claim 5, wherein the top beam (4) of the pile anchor reinforcement structure (1), the top beam (4) of the reinforcement structure (2), the coupling beam (6) for connecting the top beam (4) of the pile anchor reinforcement structure (1) and the top beam (4) of the reinforcement structure (2), and the face plate (7) are all provided with reinforcing steel bars, and the reinforcing steel bars at all positions are connected into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021430011.0U CN212714828U (en) | 2020-07-20 | 2020-07-20 | Rubbish heap body soil and rock retaining dam reinforcing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021430011.0U CN212714828U (en) | 2020-07-20 | 2020-07-20 | Rubbish heap body soil and rock retaining dam reinforcing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212714828U true CN212714828U (en) | 2021-03-16 |
Family
ID=74907068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021430011.0U Active CN212714828U (en) | 2020-07-20 | 2020-07-20 | Rubbish heap body soil and rock retaining dam reinforcing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212714828U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513032A (en) * | 2021-03-23 | 2021-10-19 | 深圳市工勘岩土集团有限公司 | Three-row pile gravity dam combined retaining structure for filled high slope |
| CN114396071A (en) * | 2022-01-14 | 2022-04-26 | 中铁二院工程集团有限责任公司 | Soil retaining assembly and connecting and bar planting anchoring method thereof |
| CN114411802A (en) * | 2021-12-24 | 2022-04-29 | 湖北省交通规划设计院股份有限公司 | Combined pile-joist retaining wall and construction method |
-
2020
- 2020-07-20 CN CN202021430011.0U patent/CN212714828U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513032A (en) * | 2021-03-23 | 2021-10-19 | 深圳市工勘岩土集团有限公司 | Three-row pile gravity dam combined retaining structure for filled high slope |
| CN114411802A (en) * | 2021-12-24 | 2022-04-29 | 湖北省交通规划设计院股份有限公司 | Combined pile-joist retaining wall and construction method |
| CN114411802B (en) * | 2021-12-24 | 2024-04-26 | 湖北省交通规划设计院股份有限公司 | Combined pile joist retaining wall and construction method |
| CN114396071A (en) * | 2022-01-14 | 2022-04-26 | 中铁二院工程集团有限责任公司 | Soil retaining assembly and connecting and bar planting anchoring method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212714828U (en) | Rubbish heap body soil and rock retaining dam reinforcing system | |
| CN103410167B (en) | Three-dimensional reinforced rigid-soft composite ecological retaining wall and construction method | |
| CN202718138U (en) | Self-locking type ecological retaining wall structure | |
| CN111119229A (en) | Multi-stage reinforced retaining wall comprehensive protection system suitable for large-scale waste slag yard and stability checking and calculating method and construction method thereof | |
| CN111778793B (en) | Cavity collapse prevention and control structure and construction method | |
| CN101936012B (en) | Impermeable membrane anchoring structure at middle part of side slope of abrupt and hard rock side slope single-layer impermeable structure | |
| CN110374111B (en) | Slope releasing and steel pipe pile anchor cooperative supporting system | |
| CN203429660U (en) | Stereo stiffened rigid-flexible combined ecological retaining wall | |
| CN219410355U (en) | Flexible side-width structure of high-fill embankment of existing railway | |
| CN212223948U (en) | Multi-stage reinforced retaining wall comprehensive protection system suitable for large-scale abandoned slag yard | |
| CN215165533U (en) | Anchoring structure for side slope of solid waste landfill | |
| CN114016544B (en) | Multistage reinforced earth retaining wall structure and construction method | |
| CN101956404A (en) | Side slope middle impermeable layer anchoring of steep hard rocky bedrock side slope single-layer impermeable structure | |
| CN213358505U (en) | Seepage-proofing reinforcing heightening structure for existing diseased river levee | |
| CN204940310U (en) | A kind of combination retaining structure | |
| CN211815255U (en) | Rock mass abrupt slope road structure | |
| CN211228563U (en) | Assembled groundwater drainage blind ditch drainage system that oozes | |
| CN109403356B (en) | Side slope supporting structure | |
| CN219450778U (en) | Prefabricated anti-seepage anchoring structure for steep rock slope | |
| CN220888175U (en) | Bridge head filling embankment structure | |
| CN216892462U (en) | Cutting slope is thick swift current and is administered structure of compounding of body | |
| CN214883736U (en) | Ecological slope protection in landfill yard closing renovation | |
| CN219410378U (en) | Rock slope overhanging type road structure | |
| CN217922839U (en) | High-speed railway buried high embankment structure in deep and thick miscellaneous fill-up area | |
| CN218116497U (en) | Fill area anchor and draw formula sheet pile wall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |