CN115095209A - Transportation and positioning method for large soil covering tank - Google Patents
Transportation and positioning method for large soil covering tank Download PDFInfo
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- CN115095209A CN115095209A CN202210921806.9A CN202210921806A CN115095209A CN 115095209 A CN115095209 A CN 115095209A CN 202210921806 A CN202210921806 A CN 202210921806A CN 115095209 A CN115095209 A CN 115095209A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/02—Containers for fluids or gases; Supports therefor
- E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
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Abstract
The invention provides a transportation in-place method of a large soil covering tank, which is characterized in that a jacking saddle is utilized to jack up a tank body of the soil covering tank so as to conveniently bind and install a transportation saddle, SPMT is utilized as transportation equipment, the SPMT, the transportation saddle and the soil covering tank are stably bound together and transported to a sandy soil foundation area through a steel wire rope and other components, the soil covering tank is placed on a manufactured sandy soil foundation, and soil covering and compacting are carried out. By utilizing the transportation in-place method provided by the invention, the transportation in-place of the large soil covering tank can be completed without using more large hoisting equipment, and the problem that the large soil covering tank is inconvenient to transport after the production and the manufacture are completed is effectively solved.
Description
Technical Field
The invention belongs to the technical field of soil covering tank installation, and particularly relates to a transportation and positioning method of a large soil covering tank.
Background
With the rapid development of national economy and the increasing demand of national oil strategic reserves, the requirements on the scale and quality of the soil covering tank in petrochemical engineering construction are higher and higher, and more national oil product strategic reserves need to be constructed. But the large-scale soil covering jar of the first research and development system of present internal can oil storage about a ten thousand sides, its jar room that covers the soil jar adopts the concrete cast in situ to form, the diameter reaches more than thirty meters, highly about twenty meters, weight reaches 700 more tons, the category of general high big template engineering has far been exceeded, the mode that traditional utilization many track hangers jointly hoisted to carry out bulky equipment transportation and take one's place is not fit for this kind of neotype bulky soil covering jar, there are great limitation and potential safety hazard problem, and the area of being under construction is great, it is inconvenient to use. Therefore, it is necessary to design a new transportation and positioning construction scheme for large soil-covered tanks.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a transportation in-place method of a large soil covering tank, which is based on the mutual matching of a transportation saddle and a jacking saddle and the combination of SPMT, thereby realizing the purposes of jacking, transporting and in-place of the soil covering tank, solving the problem that the large soil covering tank is inconvenient to transport after the production and manufacture are finished, and the whole transportation in-place process is more efficient, faster and safer.
The present invention achieves the above technical objects by the following technical means.
A method for transporting large soil-covered tanks in place comprises the following steps:
step 1: installing a jacking saddle on the lower surface of the soil covering tank, placing a jack, a sub-load road base box and a square box below the jacking saddle, controlling the jack to jack the whole soil covering tank upwards to a specified height, and removing a rotary table below the soil covering tank;
and 2, step: a transportation saddle is arranged on the lower surface of the soil covering tank, and the transportation saddle and the soil covering tank are bound and fixed by a steel wire rope;
and step 3: driving the SPMT under the transport saddle, enabling the SPMT vehicle plate to tightly prop the transport saddle by adjusting the height of the SPMT vehicle plate, bearing the whole weight of the soil covering tank on the transport saddle, and then removing the jacking saddle; binding and fixing the SPMT, the transportation saddle and the soil covering tank by using a steel wire rope;
and 4, step 4: transforming the transportation pavement into a hard pavement;
and 5: manufacturing a sandy soil foundation;
step 6: along the road surface reformed through the step 4, the SPMT bears the soil covering tank, the soil covering tank drives into the sandy soil foundation area along the channels on the two sides of the sandy soil foundation, after the soil covering tank reaches the appointed placing position, the height of the SPMT vehicle plate is adjusted to enable the transport saddle to leave the soil covering tank, the soil covering tank falls onto the sandy soil foundation, and finally the SPMT drives the transport saddle to drive away from the sandy soil foundation area;
and 7: and (4) repeating the steps (1), (2), (3) and (6) in sequence until all the soil covering tanks are transported in place, and then, backfilling soil layers in a layered mode and rolling in a layered mode.
Further, in the step 5, the concrete process of making the sandy soil foundation is as follows:
step 5.1: clearing sundries on the surface of a concrete substrate, and paying off and positioning channels which are required to be reserved and used for SPMT walking, so that the width of each channel is 8m, and the distance between the channels is 18 m;
step 5.2: preparing a sand material, wherein the maximum grain size of sand in the sand material is not more than 2mm, the grading grain size uniformity coefficient is 4-10, and the mud content is not more than 5%; then weaving bagged sand by using hard fibers by workers, wherein the filling rate of the bagged sand is 40-50%, and sealing by using a sealing machine after sand filling is finished;
step 5.3: the filled sandbags are piled up layer by layer on two sides of the channel, the width of each layer of sandbag is 3m, the height of each layer of sandbag is 300mm, each layer of sandbag is piled up, a layer of sand is orderly constructed layer by layer and compacted layer by layer, and finally a sandy soil foundation for placing the soil covering tank is formed, in addition, the sandy soil foundation is single-side divided into four layers at the height of 1.5m and is closed to the top to be 2.1m wide;
step 5.4: and paving a layer of sand on the concrete foundation of the two channels for the SPMT to walk.
Further, in step 3, the specific process of adjusting the height of the SPMT bed is as follows:
lowering the SPMT car plate to the lowest height, driving the SPMT car plate into the position right below the transport saddle, lifting the SPMT car plate until the jacking saddle is not stressed any more, removing the jacking saddle, and simultaneously removing a jack, a sub-load road base box and a square box which are arranged below the jacking saddle; at the moment, the whole weight of the soil covering tank is borne on the transportation saddle, then, the vehicle plate of the SPMT is lowered, the soil covering tank is lowered, and then the binding and fixing between the SPMT and the transportation saddle and the binding and fixing between the SPMT and the soil covering tank are carried out by utilizing the steel wire rope.
Furthermore, when the steel wire rope is bound and fixed, the steel wire rope is wrapped with the rubber tube and is connected with the SPMT vehicle plate through a chain block, the transportation saddle and the SPMT vehicle plate are sealed and braked in a splayed mode, the SPMT vehicle plate and the soil covering tank are sealed and braked in a surrounding and bundling mode, and a rubber plate used for increasing the friction coefficient is placed between the soil covering tank and the SPMT.
Further, in the step 4, the concrete process of reconstructing the transportation pavement comprises the following steps:
firstly, carrying out roadbed excavation, wherein the excavation depth is not less than 1.2m, after the excavation is finished, filling a large stone gravel layer on a roadbed base layer, compacting after caulking by using stones, then filling a lime-soil cushion layer, compacting in layers, and finally making a two-lime-stone road surface layer to ensure that the bearing capacity of a foundation is not less than 12 t/square meter, the surface strength is not less than 1MPa and the gradient is not more than 1%.
Further, in the step 1, the number of the jacking saddles is three, wherein one jacking saddle is positioned at the middle position of the lower surface of the soil covering tank, and the other two jacking saddles are symmetrically arranged at positions close to the end part of the soil covering tank; in the step 2, the number of the transportation saddles is four, and the four transportation saddles are symmetrically arranged on the lower surface of the soil covering tank in a two-to-one group.
Further, in the step 1, in the jacking process of the jacks, two operators are arranged on each jack, when the jack is just stressed completely, namely the soil covering tank just leaves the rotary table, jacking is stopped, the jack is static for 5-10 minutes, the conditions of the jack and the road surface are checked, if no problem occurs, the jack is controlled to continue jacking until the soil covering tank is jacked to be 50mm away from the rotary table, the jack and the road surface are observed again, if no problem occurs, the jack is controlled to continue jacking until the soil covering tank is 200mm away from the rotary table roller frame below the jack, and then the rotary table is removed.
Further, in the step 6, a specific process of adjusting the height of the SPMT bed includes:
firstly, lowering the SPMT vehicle plate until the soil covering tank falls to the sandy soil foundation, then loosening the steel wire rope bound between the SPMT and the soil covering tank and the steel wire rope bound between the transportation saddle and the soil covering tank, continuing to lower the SPMT vehicle plate until the transportation saddle leaves the soil covering tank, bearing the weight of the soil covering tank by the sandy soil foundation, and finally driving the transportation saddle away from the sandy soil foundation area by the SPMT.
Further, the load of each axis of the SPMT is 48 tons, the wheelbase is 100mm, the width is 2430mm, the lowest height is 120mm, the highest height is 1850mm, the highest running speed is 2 km/h, the heavy-load running speed is within 5 km/h, and the tires of the SPMT are filled with solid silica gel; after the SPMT bears the soil covering tank and enters the sandy soil foundation area, the bottom of the transportation saddle is at least 0.1m higher than the sandy soil foundation.
Further, in the step 7, a bulldozer is used for flattening and filling the sandy soil foundation area, a heavy road roller is used for rolling, layered filling and layered rolling are carried out, the soil covering tanks are all covered, and the compaction degree is ensured to reach 0.96.
The invention has the following beneficial effects:
the invention realizes the purposes of jacking, transporting and positioning the soil covering tank based on the mutual matching of the transporting saddle and the jacking saddle and the combination of the SPMT, does not need to use more large hoisting equipment, has more convenient and efficient whole process and high safety, and effectively solves the problem that the large soil covering tank is inconvenient to transport after the production and the manufacture are finished. The invention designs a thicker sand cushion layer to ensure that the bottom of the transportation saddle is higher than a base in place, thereby realizing the purpose that the SPMT can be smoothly withdrawn from the lower part of the soil covering tank and ensuring the safety of the soil covering tank.
Drawings
FIG. 1 is a schematic view of the arrangement of transport saddles and jacking saddles under the earth-covering tank of the present invention;
fig. 2 is a schematic diagram of a sand foundation closing-up in the invention.
In the figure: 1-covering a soil tank; 2-transport saddles; 3-jacking a saddle; 4-sand foundation.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, without limiting the scope of the invention thereto.
The invention relates to a transportation and positioning method of a large soil covering tank, which comprises the following steps:
step 1: the initial placement position of the soil covering tank 1 is above the rotary table, firstly, three jacking saddles 3 are hoisted to the periphery of the soil covering tank 1 by a crane and are fixedly arranged at a designated position below the soil covering tank 1; as shown in fig. 1, one of the jacking saddles 3 is located at the middle position of the lower surface of the soil covering tank 1, the other two jacking saddles 3 are symmetrically installed at the position close to the end part of the soil covering tank 1, and a jack, a sub-load road base box and a square box are installed below each jacking saddle 3 to ensure the stability of the jacking saddle 3;
after the jacking saddle 3 is installed, equipment such as a distribution box, a pump station, an oil pipe and the like are connected, a jack in the jacking saddle 3 is controlled to work, and the soil covering tank 1 is integrally jacked upwards; in the jacking process, two operators are arranged on each jack, when the jacks are just completely stressed, namely the soil covering tank 1 just leaves the rotary table, jacking is stopped, the jacks are static for 5-10 minutes, the conditions of the jacks and the road surface are checked, if no problem occurs, the jacks are controlled to continue jacking until the soil covering tank 1 is jacked to be 50mm away from the rotary table, the jack and the road surface are observed again, if no problem occurs, the jacks are controlled to continue jacking until the soil covering tank 1 is 200mm away from the rotary table roller frame below the jacks, and then the rotary table is removed.
Step 2: hoisting four transportation saddles 2 to the lower part of the soil covering tank 1 by using a crane, wherein as shown in figure 1, the four transportation saddles 2 are symmetrically arranged on the lower surface of the soil covering tank 1 in a group of two; an operator climbs to a certain height by means of a ladder, and the steel wire rope penetrates through lifting lugs on two sides of the transportation saddle 2 to bind the tank body of the soil covering tank 1 and the transportation saddle 2 together.
And step 3: lowering a self-propelled hydraulic flat car (SPMT) to the lowest height, slowly driving the self-propelled hydraulic flat car (SPMT) into the position right below a fixed transport saddle 2, lifting a car deck of the SPMT until a jacking saddle 3 is not stressed any more, removing the jacking saddle 3, and simultaneously removing a jack, a load sharing road base box and a square box; the vehicle plate of the SPMT is lowered, the soil covering tank 1 is lowered, then the steel wire rope is used for binding and fixing the SPMT and the transportation saddle 2 and the soil covering tank 1, the SPMT, the transportation saddle 2 and the soil covering tank 1 are stably fixed together, and the SPMT, the transportation saddle 2 and the soil covering tank 1 are prevented from sliding off; wherein, all be provided with the rubber pad in order to increase frictional force, avoid wearing and tearing between earthing jar 1 and the transportation saddle 2, between transportation saddle 2 and the SPMT.
When the binding is fixed, a rubber tube is wrapped outside a steel wire rope for binding, the steel wire rope is connected with the SPMT vehicle plate through a chain block, a splayed sealing brake is adopted between the transport saddle 2 and the SPMT vehicle plate (namely, two ends of the transport saddle 2 are tensioned by the steel wire rope and the chain block at an angle of 45 degrees in a splayed manner), and a surrounding binding sealing brake is adopted between the SPMT vehicle plate and the soil covering tank 1; meanwhile, the support between the soil covering tank 1 and the SPMT can meet the requirement of normal operation of a vehicle, the positive and negative bending moments borne by a main beam of the vehicle cannot exceed the design requirement, the binding of the soil covering tank 1 on the SPMT must be firm, and the strength of a rigging and a tensioner is sufficient, so that the soil covering tank 1 is ensured not to be displaced.
During the binding and reinforcing operation, the project technical chief and the safety quality assurance worker supervise the site and confirm the supervision by the project technical chief and the safety quality assurance worker; the SPMT adopts an SPMT hydraulic module transportation device of Germany Soyleigh brand, the load of each axis is 48 tons, the wheelbase is 100mm, the width is 2430mm, the minimum height is 120mm, the maximum height can reach 1850mm, the maximum driving speed is 2 km/h, and the heavy-load driving speed is controlled within 5 km/h; in order to meet the diameter requirement of the large soil covering tank 1, in the embodiment, one 4-axis SPMT and one 6-axis SPMT are connected in series end to form a straight line to form an integral module vehicle which supports the transportation saddle 2 and the soil covering tank 1 on the integral module vehicle together, so that four SPMTs are required to smoothly complete transportation of the soil covering tank 1 in place; the SPMT tires are all filled with solid silica gel, so that the safety of the transportation process is ensured, and the problem of time delay due to tire burst is solved.
And 4, step 4: the transportation road surface is reformed transform, guarantees that the transportation road surface is whole for the stereoplasm road surface, and specific process is as follows:
firstly, roadbed excavation is carried out, the excavation depth is not less than 1.2m, the excavation depth of the roadbed in the embodiment is preferably 1.2m, after excavation is finished, a large stone gravel layer with the thickness of 50cm is filled in a roadbed base layer, stones are used for filling seams and then compacting, a lime-soil cushion layer with the thickness of 50cm is filled in the roadbed base layer and compacted in a layering mode, and finally a two-lime stone pavement layer with the thickness of 20cm is made, so that the bearing capacity of the foundation is not less than 12 t/square meter, the strength of the pavement layer is not less than 1MPa, and the gradient is not more than 1%, so that pavement cracking caused by the overweight of earthing tanks is prevented.
And 5: the sand foundation 4 is manufactured by the following specific processes:
step 5.1: cleaning up sundries on the surface of a concrete substrate, and then carrying out paying-off positioning on two channels which are required to be reserved and used for SPMT to walk, so that the width of each channel is 8m, the distance between the two channels is 18m, and two groups of SPMTs which are subsequently loaded with the soil covering tank 1 can pass smoothly;
and step 5.2: preparing sand materials, ensuring that the maximum grain size of sand is not more than 2mm, and ensuring good gradation, wherein the uniformity coefficient of the gradation grain size is between 4 and 10, and the mud content is not more than 5 percent; then, weaving bagged sand by using hard fibers by workers, wherein the filling rate of the bagged sand is 40% -50%, and sealing by using a sealing machine after sand filling is finished, so that tight sealing is ensured, and the sealing direction is consistent and smooth;
step 5.3: according to the channel determined in the step 5.1, the filled sandbags are layered and piled up on two sides of the channel, the sandbags are guaranteed to be flat and tightly meshed, the width of each layer of sandbag is 3m, the height of each layer of sandbag is 300mm, each layer of sandbag is piled up, one layer of sand is laid, the sandbags are orderly constructed layer by layer and compacted layer by layer, and finally a sandy soil foundation 4 for placing the soil covering tank 1 is formed; in addition, as shown in fig. 2, the sandy soil foundation 4 is closed to the top 2.1m wide by four layers on one side at the height of 1.5 m;
step 5.4: and paving a layer of sand on the concrete foundation of the two channels for the SPMT to walk.
Step 6: transporting the soil covering tank 1 to a site of taking place along the road surface reformed through the step 4; before transportation, the transportation direction needs to be paid attention to, the SPMT is turned around and turned in advance, the tightness of the steel wire rope is checked at any time in the transportation process, a transportation guide worker is specially arranged in the whole transportation process, and the transportation process is guaranteed to be safely and smoothly carried out;
in the transportation, when the flat tire condition appears, can separate out relevant axle from suspension, need not trade the child and can continue the transportation operation, need not lift equipment and change the flatbed wheel, if needs, can change when full-load to guarantee the conveying efficiency of earthing jar, also guaranteed the security of earthing jar transportation.
And 7: after the SPMT bears the soil covering tank 1 to a position location, the SPMT drives into a constructed sand foundation 4 area along a channel, and reaches a designated placement position, the vehicle plate of the SPMT is lowered until the soil covering tank 1 falls onto the sand foundation 4, then the steel wire rope bound between the SPMT and the soil covering tank 1 and the steel wire rope bound between the transport saddle 2 and the soil covering tank 1 are loosened, the vehicle plate of the SPMT is lowered continuously until the transport saddle 2 leaves the soil covering tank 1, the soil covering tank 1 is borne by the sand foundation 4, finally the SPMT drives the transport saddle 2 to leave the sand foundation 4 area, and the transport position location operation of the single soil covering tank 1 is completed;
and (3) repeating the steps 1, 2, 3, 6 and 7 in sequence until all the soil covering tanks 1 are transported in place.
And 8: after all the soil covering tanks 1 are installed in place, backfilling and compacting in layers;
and (3) bulldozing and flattening the sandy soil foundation 4 area by using a bulldozer, rolling by using a heavy road roller, filling and rolling in layers, completely covering the soil covering tank 1, and ensuring that the compaction degree reaches 0.96.
The present invention is not limited to the above-described embodiments, and any obvious improvements, substitutions or modifications can be made by those skilled in the art without departing from the spirit of the present invention.
Claims (9)
1. A transportation and in-place method of a large soil-covered tank is characterized by comprising the following steps:
step 1: installing a jacking saddle (3) on the lower surface of the soil covering tank (1), placing a jack, a sub-load path base box and a square box below the jacking saddle (3), controlling the jack to jack the whole soil covering tank (1) upwards to a specified height, and removing a rotary table below the soil covering tank (1);
step 2: a transportation saddle (2) is arranged on the lower surface of the soil covering tank (1), and the transportation saddle (2) and the soil covering tank (1) are bound and fixed by using a steel wire rope;
and 3, step 3: driving the SPMT under the transport saddle (2), enabling the SPMT vehicle plate to tightly prop the transport saddle (2) by adjusting the height of the SPMT vehicle plate, bearing the whole weight of the soil covering tank (1) on the transport saddle (2), and then removing the jacking saddle (3); the SPMT, the transportation saddle (2) and the soil covering tank (1) are bound and fixed by using a steel wire rope;
and 4, step 4: transforming the transportation pavement into a hard pavement;
and 5: manufacturing a sandy soil foundation (4);
step 6: along the road surface modified in the step 4, the SPMT bears the soil covering tank (1), the soil covering tank drives into the sand foundation (4) area, after the soil covering tank reaches a specified placement position, the height of the SPMT vehicle plate is adjusted to enable the soil covering tank (1) to fall onto the sand foundation (4), and finally the SPMT drives the transportation saddle (2) away from the sand foundation (4) area;
and 7: sequentially repeating the steps 1, 2, 3 and 6 until all the soil covering tanks (1) are transported in place, and then, backfilling the soil layers in layers and rolling in layers;
in the step 5, the concrete process for manufacturing the sandy soil foundation (4) is as follows:
step 5.1: clearing sundries on the surface of a concrete substrate, and paying off and positioning channels which are required to be reserved and used for SPMT walking, so that the width of each channel is 8m, and the distance between the channels is 18 m;
and step 5.2: preparing a sand material, wherein the maximum grain size of sand in the sand material is not more than 2mm, the grading grain size uniformity coefficient is 4-10, and the mud content is not more than 5%; then weaving bagged sand by using hard fibers by workers, wherein the filling rate of the bagged sand is 40% -50%, and sealing by using a sealing machine after sand filling is finished;
step 5.3: the filled sandbags are piled up layer by layer on two sides of the channel, the width of each layer of sandbag is 3m, the height of each layer of sandbag is 300mm, each layer of sandbag is piled up, a layer of sand is orderly constructed layer by layer and compacted layer by layer, and finally a sandy soil foundation (4) for placing the soil covering tank (1) is formed, in addition, the sandy soil foundation (4) is closed up to the top 2.1m wide by four layers on one side at the height of 1.5 m;
step 5.4: and paving a layer of sand on the concrete foundation of the two channels for the SPMT to walk.
2. The method for transporting a large soil-covered tank in place according to claim 1, wherein the step 3, the specific process of adjusting the height of the SPMT vehicle plate is as follows:
lowering the SPMT vehicle plate to the lowest height, driving the SPMT vehicle plate into the position right below the transportation saddle (2), lifting the SPMT vehicle plate until the jacking saddle (3) is not stressed any more, removing the jacking saddle (3), and simultaneously removing a jack, a sub-load road base box and a square box which are arranged below the jacking saddle (3); at the moment, the whole weight of the soil covering tank (1) is borne on the transportation saddle (2), then, the vehicle plate of the SPMT is lowered, the soil covering tank (1) is lowered, and then the steel wire rope is used for binding and fixing the SPMT and the transportation saddle (2) and the soil covering tank (1).
3. The transportation and positioning method of the large soil-covered tank according to claim 2, characterized in that when the large soil-covered tank is bound and fixed, the steel wire rope is wrapped with a rubber hose and connected with the SPMT car plate by a chain block, a splayed sealing brake is adopted between the transportation saddle (2) and the SPMT car plate, a bound sealing brake is adopted between the SPMT car plate and the soil-covered tank (1), and a rubber plate for increasing the friction coefficient is placed between the soil-covered tank (1) and the SPMT.
4. The transportation and in-place method of the large soil-covered tank according to claim 1, wherein in the step 4, the concrete process of the transportation pavement reconstruction is as follows:
firstly, carrying out roadbed excavation, wherein the excavation depth is not less than 1.2m, after the excavation is finished, filling a large stone gravel layer on a roadbed base layer, compacting after caulking by using stones, then filling a lime-soil cushion layer, compacting in layers, and finally making a two-lime-stone road surface layer to ensure that the bearing capacity of a foundation is not less than 12 t/square meter, the surface strength is not less than 1MPa and the gradient is not more than 1%.
5. The method for transporting a large soil-covered tank in place according to claim 1, characterized in that in step 1, the number of the jacking saddles (3) is three, wherein one jacking saddle (3) is located at the middle position of the lower surface of the soil-covered tank (1), and the other two jacking saddles (3) are symmetrically arranged at positions close to the end parts of the soil-covered tank (1); in the step 2, the number of the transportation saddles (2) is four, and every two of the four transportation saddles (2) are arranged in a group and symmetrically arranged on the lower surface of the soil covering tank (1).
6. The method for transporting the large soil-covered tank in place according to claim 1, wherein in the step 1, two operators are arranged on each jack in the jacking process of the jacks, when the jacks are just fully stressed, namely when the soil-covered tank (1) just leaves the rotary table, the jacking is stopped, the jacks are stopped and are kept still for 5-10 minutes, the condition of the jacks and the road surface is checked, if no problem occurs, the jacks are controlled to continue jacking, the jacks are stopped until the soil-covered tank (1) is jacked to be 50mm away from the rotary table, the conditions of the jacks, the road surface and the like are observed again, and if no problem occurs, the jacks are controlled to continue jacking until the soil-covered tank (1) is 200mm away from the roller frame of the rotary table below the jacks.
7. The method for transporting a large soil-covered tank in place according to claim 1, wherein the step 6, the specific process of adjusting the height of the SPMT vehicle plate is as follows:
firstly, the SPMT vehicle plate is lowered until the soil covering tank (1) falls onto the sandy soil foundation (4), then the steel wire rope bound between the SPMT and the soil covering tank (1) and the steel wire rope bound between the transportation saddle (2) and the soil covering tank (1) are loosened, the SPMT vehicle plate is continuously lowered until the transportation saddle (2) leaves the soil covering tank (1), the sandy soil foundation (4) bears the weight of the soil covering tank (1), and finally the transportation saddle (2) is driven away from the region of the sandy soil foundation (4) by the SPMT.
8. The method of claim 1, wherein the SPMT load is 48 tons per axis, the wheelbase is 100mm, the width is 2430mm, the minimum height is 120mm, the maximum height is 1850mm, the maximum driving speed is 2 km/h, the heavy-load driving speed is within 5 km/h, and the tires of the SPMT are filled with solid silica gel; after the SPMT carries the soil covering tank (1) and enters the area of the sand foundation (4), the bottom of the transportation saddle (2) is at least 0.1m higher than the sand foundation (4).
9. The method for transporting the large soil-covered tank in place as claimed in claim 1, wherein in step 7, the soil-covered tank (1) is completely covered by leveling and filling the area of the sandy soil foundation (4) with a bulldozer and rolling with a heavy road roller, and the soil is filled and rolled layer by layer, so that the degree of compaction reaches 0.96.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210921806.9A CN115095209B (en) | 2022-08-02 | 2022-08-02 | Transportation and positioning method for large-scale earthing tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210921806.9A CN115095209B (en) | 2022-08-02 | 2022-08-02 | Transportation and positioning method for large-scale earthing tank |
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| CN115095209A true CN115095209A (en) | 2022-09-23 |
| CN115095209B CN115095209B (en) | 2023-11-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117306579A (en) * | 2023-10-20 | 2023-12-29 | 中国化学工程第十四建设有限公司 | Horizontal bullet tank ring-packing sand filling and stabilization process |
| CN117306579B (en) * | 2023-10-20 | 2025-01-17 | 中国化学工程第十四建设有限公司 | Horizontal bullet tank ring-packing sand filling stabilizing process |
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|---|---|
| CN115095209B (en) | 2023-11-14 |
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