CN112854841A

CN112854841A - Civil construction structure construction method of bottom mud treatment plant

Info

Publication number: CN112854841A
Application number: CN202110051967.2A
Authority: CN
Inventors: 林忠成; 张道清; 袁林; 梁康; 陈丁辉; 程学良; 杨权绪; 李小可
Original assignee: PowerChina Harbour Co Ltd
Current assignee: PowerChina Harbour Co Ltd
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-05-28
Anticipated expiration: 2041-01-15
Also published as: CN112854841B

Abstract

A civil engineering structure construction method of a sediment disposal plant comprises the following steps: (1) construction measurement; (2) clearing the table and performing basic processing; (3) constructing a factory road; (4) constructing a foundation pile; (5) constructing a bearing platform; (6) constructing main structures of a dehydration workshop, a pump room, a super-magnetic water purification workshop and a charging bucket workshop; (7) constructing a sedimentation tank; (8) constructing a grit chamber; (9) constructing a residual water pool; (10) constructing a conditioning pool; (11) constructing a mud cake warehouse; (12) paving and constructing a sand storage yard and an external sediment treatment area; (13) and (5) constructing infrastructure. The invention has reasonable plane arrangement, can effectively improve the utilization rate of land resources and reduce the influence of factory operation on the external environment; the site operation is convenient, the structural integrity is good, and the shock absorption effect is good.

Description

Civil construction structure construction method of bottom mud treatment plant

Technical Field

The invention belongs to the technical field of construction of building structures, and particularly relates to a civil engineering structure construction method of a sediment treatment plant.

Background

The construction process of the current bottom mud treatment plant project is generally divided into the following two parts in time series: firstly, building civil engineering of a factory building; and secondly, an electromechanical installation project for installing mechanical equipment and electrical equipment and laying pipelines in the plant.

And because of the special treatment process of the sediment treatment plant, the plant is particularly built into a very solid reinforced concrete project, and the system is more and the equipment is huge, so the sediment treatment plant project has the characteristics of large civil engineering construction quantity, strict construction quality requirement and long construction period.

In conclusion, although the existing bottom mud treatment plant obtains better effect under proper working conditions, the existing bottom mud treatment plant is still insufficient in the aspects of improving the utilization rate of land resources, the field construction efficiency and the like. In view of this, in order to effectively utilize land resources, optimize the layout of a bottom mud treatment plant and improve the construction efficiency of the plant, the invention of the civil structure construction method of the bottom mud treatment plant, which can not only improve the utilization rate of the land resources and the on-site construction efficiency, but also improve the structural integrity and the environment of the plant, is urgently needed.

Disclosure of Invention

In order to solve the problems, the invention provides a civil structure construction method of a sediment treatment plant. The invention has reasonable plane arrangement, can effectively improve the utilization rate of land resources and reduce the influence of factory operation on the external environment; the site operation is convenient, the structural integrity is good, and the shock absorption effect is good.

The technical scheme adopted by the invention for solving the technical problems is a civil structure construction method of a bottom mud treatment plant, wherein the civil structure mainly comprises a plant area road, a dehydration workshop, a pump room, an ultra-magnetic water purification workshop, a bucket workshop, a sedimentation tank, a grit chamber, a sand dump, a surplus water tank, a conditioning tank, a mud cake storehouse, an external bottom mud treatment area and infrastructure; the construction method comprises the following steps:

(1) construction measurement: establishing a construction control net, laying a construction base line and a leveling point, and then positioning on the ground;

(2) clearing the table and performing basic treatment: firstly, clearing the surface, then replacing and filling or backfilling, making a steel pipe/sheet pile foundation at the main part, and hardening the road;

(3) construction of roads in a factory: sequentially carrying out roadbed foundation filling, gravel cushion layer laying, pavement water stabilization layer construction and pavement concrete hardening construction; the pavement concrete is prepared from the following raw materials in parts by weight: 120-130 parts of common silicate cement, 10-15 parts of a diatomite and montmorillonite mixture with the weight ratio of 2:1, 15-18 parts of modified emulsified asphalt, 20-25 parts of calcium silicate powder, 5-8 parts of acrylic fiber, 0.02-0.04 part of a defoaming agent, 2-3 parts of a water reducing agent, 25-30 parts of medium sand, 30-35 parts of 20-25cm crushed stone and 20-30 parts of water; the modified emulsified asphalt is prepared by high-speed shearing of matrix asphalt, a composite emulsifier and polymer emulsion; the compound emulsifier is compounded by dimethyl didodecyl ammonium chloride and a tertiary amine type xylamine asphalt emulsifier; the polymer emulsion is a VAE emulsion;

(4) constructing a foundation pile: constructing foundation piles in a dehydration workshop, a pump room, a super-magnetic water purification workshop and a charging bucket workshop;

(5) and (3) bearing platform construction: after the foundation pile is constructed, carrying out bearing platform construction in a dehydration workshop, a pump room, a super-magnetic water purification workshop and a charging bucket workshop;

(6) constructing main structures of a dehydration workshop, a pump room, a super-magnetic water purification workshop and a charging bucket workshop;

(7) and (3) construction of a sedimentation tank: after the roads in the yard are built to the corresponding positions of the sedimentation tank, steel sheet pile cofferdam construction is firstly carried out, excavation construction is synchronously carried out on the supported sections, and after the excavation is finished, asphalt waterproof coiled materials are laid and plain concrete is poured on the asphalt waterproof coiled materials; the plain concrete comprises the following raw materials in parts by weight: 190 parts of cement 185-one-material, 460 parts of 18-20cm broken stone 450-one-material, 45-50 parts of foam slag, 420 parts of coarse sand 410-one-material, 60-70 parts of slag-shaped volcanic gravel, 10-12 parts of calcium carbonate powder, 4-5 parts of calcium sulfate dihydrate, 3-4 parts of glass wool, 6-8 parts of PVA fiber, 1-2 parts of basepipe, 1.5-2 parts of high-performance water reducer, 0.1-0.15 part of trihydroxy triethylamine, 2.5-3 parts of sodium hexafluorosilicate, 0.5-0.6 part of pine paste, 0.5-0.6 part of sodium dodecyl benzene sulfonate and 140 parts of water 130-one-material;

(8) and (3) construction of the grit chamber: after the bottom of the grit chamber is backfilled to a designed elevation, paving an asphalt waterproof coiled material, and then sequentially covering a concrete cushion layer and bottom plate concrete on the asphalt waterproof coiled material; after the construction of the pool bottom meets the construction conditions, the construction of the pool wall is carried out;

(9) and (3) construction of a residual water pond: after the bottom of the pool is excavated to the designed elevation, paving an asphalt waterproof coiled material, and covering plain concrete on the asphalt waterproof coiled material; then, constructing the pool wall, then synchronously performing backfilling construction on two sides of the retaining wall, paving an asphalt waterproof coiled material on the upper side of the backfilling on the inner side, and covering plain concrete on the asphalt waterproof coiled material; the asphalt waterproof coiled material is of a layered structure and comprises a nano film, a polyurethane layer, an IIR rubber sheet layer, an SBS modified asphalt waterproof layer, a reinforcing layer, an adhesive layer and an isolating layer, wherein the outer layer on one side of the modified asphalt waterproof coiled material is the nano film, the outer layer on the other side of the modified asphalt waterproof coiled material is the isolating layer, the other side of a polymer nano layer is tightly attached to the polyurethane layer, the other side of the isolating layer is tightly attached to the adhesive layer, the polyurethane layer is tightly attached to the IIR rubber sheet layer, the adhesive layer is tightly attached to the SBS modified asphalt waterproof layer, the reinforcing layer is arranged between the IIR rubber sheet layer and the SBS modified asphalt waterproof layer, the reinforcing layer is a copper wire braided layer, the;

(10) construction of a conditioning pool: after the pool bottom is filled to the designed elevation, paving an asphalt waterproof coiled material, and then sequentially covering a plain concrete cushion layer and reinforced concrete on the asphalt waterproof coiled material; adopting reinforced concrete for the pool wall, then synchronously performing backfill construction on two sides of the retaining wall, laying asphalt waterproof coiled materials after building a masonry protection wall on the upper side of backfill on the inner side, and covering plain concrete on the asphalt waterproof coiled materials;

(11) constructing a mud cake warehouse;

(12) paving and constructing a sand storage yard and an external sediment treatment area;

(13) and constructing the infrastructure, wherein the infrastructure comprises an office area, a duty room, a conference room, a test room, a power distribution room and a toilet in the form of a movable board room.

Preferably, the specific steps of building the construction control network in the step (1) are construction preparation → control point transfer and recheck → survey control network → control network report and recheck → construction control → construction recheck; when the construction base line and the leveling point are arranged, the construction base line is mainly measured by a total station, and a plane control system is established by adopting an axis network measuring method; and dynamic real-time differential GPS technology is adopted during land plane positioning.

In any of the above schemes, preferably, the main parts in the step (2) comprise a conditioning tank, a dehydration workshop, a super-magnetic water purification workshop, a mud cake warehouse and a main office area of a factory; excavating earthwork by mechanical and manual cooperation in sections in sequence, pouring and tamping a concrete cushion immediately after construction is finished, and widening each side of the cushion by 150-200mm of foundation size during construction so as to facilitate installation of a foundation template; the concrete is vibrated from the bottom of the concrete slope to the top of the concrete slope, a secondary vibrating process is adopted to improve the compactness of the concrete, the vibration is carried out before the initial setting of the concrete, the elevation is checked during the vibration of the concrete, an iron plate is used for leveling, and the watering maintenance is carried out after 12-13h separation; backfilling earthwork by manually adopting an excavator, an iron shovel and a pick, tamping by a frog tamper, wherein the virtual pavement thickness of each layer is less than or equal to 250mm, performing a cutting ring sampling test according to the standard requirement after tamping of each layer, and performing construction on the next backfilled soil layer after inspection.

In any of the above schemes, preferably, the gravel cushion layer in the step (3) is paved by a rubble cushion layer with the thickness of 50-60cm, the virtual paving thickness is preferably 20-30mm larger than the design thickness, the allowable deviation of the top surface elevation of the gravel cushion layer is +/-15 mm, and the surface flatness is 20 mm; the concrete steps of the pavement water-stable layer construction are detection of the subbase layer → construction lofting → water-stable transportation → paving → static pressure → leveling → rolling → fine leveling → curing.

In any of the above schemes, preferably, in the step (4), the steel pipe pile is used for foundation pile construction, and the step of pile sinking of the steel pipe pile is plant area road construction → measurement and paying-off → pile machine in place → steel pipe pile hoisting → pile position inspection → pile sinking → first pile sinking → welding pile splicing → second pile sinking → measurement offset → pile feeding → achievement of the standard of hammer stopping → machine moving to the next pile position; wherein the welding pile extension: and stopping hammering when the first section of pile is sunk to the position that the pile top is 60-80 mm higher than the ground, and connecting the pile.

In any of the above schemes, preferably, the specific steps in the step (5) are: measuring and lofting, breaking pile heads, accurately lofting, manufacturing and installing reinforcing steel bars, manufacturing and installing templates, mixing, transporting and pouring concrete, and removing and maintaining the concrete; the bearing platform is divided into a plurality of sections according to the actual measured excavation depth of 1: 1, slope releasing at a gradient; tamping the bottom of the foundation pit, and then pouring 10cm of mortar to seal the bottom; adopting a wood template, and completing layered pouring; the pouring thickness of each layer of concrete is controlled to be about 30cm, and the upper layer of concrete is poured before the lower layer of concrete is initially set or can be remolded.

In any of the above schemes, preferably, in the step (7), the steel sheet pile is of a larsen steel sheet pile type IV, the pile length is 12m, the purlins are arranged on two sides, and the clear distance between the two sides of the purlins is 8-10mm larger than the width of the inserted sheet pile; in order to ensure the accurate inserting and driving position of the steel sheet pile, firstly, a positioning pile is arranged, the positioning pile adopts a steel pipe pile with the diameter of 50cm and the wall thickness of 10mm, and the driving depth is 5-7m according to different soil qualities; the guide beam is processed by 20I-shaped steel; the thickness of the plain concrete is 30-40 cm.

In any scheme, preferably, the grit chamber in the step (8) comprises a pickling tank, an alkali washing tank and a sand washing area, an asphalt waterproof coiled material is laid on the grit chamber, a C15 concrete cushion layer with the thickness of 10-15cm and C30 bottom plate concrete with the thickness of 25-30cm are sequentially covered on the asphalt waterproof coiled material, and C30 reinforced concrete with the thickness of 25-30cm is adopted on the wall of the grit chamber; the two sides of the grit chamber and the overflow weir are built by bricks. And after the concrete wall reinforcing steel bars of the drainage well and the steel sheet piles of the sedimentation tank are firmly welded, erecting a mold and pouring concrete, and filling the joint by adopting modified epoxy resin crack pouring glue.

In any of the above schemes, preferably, after the asphalt waterproofing membrane is laid in the step (9), the asphalt waterproofing membrane is covered with plain concrete with the thickness of 30cm, and the pool wall is constructed: firstly, throwing 50-60cm thick stone blocks, sequentially laying 10-15cm of concrete cushion and asphalt waterproof coiled materials on the stone blocks, and then performing C30 reinforced concrete retaining wall construction on the stone blocks.

In any of the above schemes, preferably, after the asphalt waterproof roll is laid in the step (10), a 5-10cm thick C15 plain concrete cushion layer and a 30-35cm thick C30 reinforced concrete are sequentially covered on the asphalt waterproof roll; the pool wall is made of C30 reinforced concrete with the thickness of 30-35 cm.

The invention is obtained according to years of practical application practice and experience, adopts the best technical means and measures to carry out combined optimization, obtains the optimal technical effect, is not simple superposition and splicing of technical characteristics, and has obvious significance.

The invention has the beneficial effects that:

1. the invention greatly improves the construction efficiency of civil engineering, and can greatly shorten the construction period of bottom mud treatment plant engineering; the construction method also solves the problem of difficult introduction of large-scale equipment, can improve the one-time introduction and position rate of the large-scale equipment, reduces the installation difficulty and improves the installation quality.

2. The plant area plane arrangement of the bottom mud treatment plant is reasonable, the utilization rate of land resources can be effectively improved, and the influence of plant area operation on the external environment is reduced; the efficiency of site operation is high, the construction is convenient, and the environmental pollution is small; the structure wholeness is good, the roughness is high, the shock attenuation is effectual.

3. The invention lays a foundation for building a sediment treatment plant, and reduces manpower, material resources and time spent in civil engineering structure construction.

4. The invention can effectively control the construction cost.

Detailed Description

The invention is further described with reference to specific examples, but the scope of the claims is not limited thereto.

Example 1

A certain bottom mud treatment plant is positioned in a city in south, the current situation of the water body of the main river of the city is seriously polluted, the water quality of the dry branch is inferior to the water quality of the surface water of type V, the water body is black and odorous, and the water ecological environment is urgently required to be improved. The bottom mud treatment plant occupies about 3.12 ten thousand square meters, and mainly comprises a garbage sorting system, a mud-sand separation tank and leaching sand washing system, a sedimentation tank, a conditioning tank and dosing system, a dehydration workshop, an ultra-magnetic water purification and residual water system, a residual soil and residual sand temporary storage yard and belt conveying system, a residual soil ceramsite production system and the like. The elevation of the terrace in the factory is 5m, and C30 concrete is poured on the main roads, plants, large equipment foundations and the like.

According to the results of on-site drilling lithology identification and indoor geotechnical test analysis, the ground layers from top to bottom sequentially comprise a fourth system miscellaneous fill layer (Qml), a total new system sea-land interactive sedimentary silt, silt fine sand and silt clay layer (Q4mc), a total new system sea-alluvial silty clay layer (Q4mc), a total new system alluvial gravel sand layer (Q4al + pl), a late update system alluvial gravel clay layer (Q3 al + pl), a late middle update system sandstone alluvial sand alluvial clay soil (Q2el) and underlying ancient metamorphic sandstone (Pz 1).

The engineering field of the bottom mud treatment plant is a garbage storage field with 5 ten thousand square meters, and a large amount of accumulated garbage and water are accumulated in the field due to low topography. The construction site needs to be hardened. In the construction process, heavy vehicles and equipment are more, damage can be caused to a hardening site in the construction process, and a part of hardening area needs to be hardened for two times or more. The production system of the sediment treatment plant is complicated, and because the above-mentioned place is the rubbish dump, can't satisfy the requirement of sediment treatment structure thing to the bearing capacity of ground, in the work progress, need to beat the higher position of requirement to the ground bearing capacity and establish the piling bar to dehydration workshop, earth dump (mud cake storehouse), pump house, material jar workshop etc.. During construction, most of the site needs to be replaced and filled, so that the basic requirements of the construction site can be met. Sedimentation tank, external sediment treatment area, in order to satisfy the requirement of construction and safety in production, in the excavation of foundation ditch, need strut the foundation ditch, according to the on-the-spot condition, select for use the steel sheet pile to strut.

The civil structure construction method of the bottom mud treatment plant mainly comprises a plant area road, a dehydration workshop, a pump room, a super-magnetic water purification workshop, a charging bucket workshop, a sedimentation tank, a grit chamber, a sand dump, a surplus water tank, a conditioning tank, a mud cake storehouse, an external bottom mud treatment area and infrastructure; the construction method comprises the following steps:

(11) constructing a mud cake warehouse;

The concrete steps when the construction control network is established in the step (1) are construction preparation → control point transfer and recheck → survey and design control network → control network report and check → construction control → construction recheck; when the construction base line and the leveling point are arranged, the construction base line is mainly measured by a total station, and a plane control system is established by adopting an axis network measuring method; and dynamic real-time differential GPS technology is adopted during land plane positioning.

The main parts in the step (2) comprise a conditioning pool, a dehydration workshop, a super-magnetic water purification workshop, a mud cake warehouse and a main office area of a plant area; excavating earthwork by mechanical and manual cooperation in sections in sequence, pouring and tamping a concrete cushion immediately after construction is finished, and widening each side of the cushion by 150-200mm of foundation size during construction so as to facilitate installation of a foundation template; the concrete is vibrated from the bottom of the concrete slope to the top of the concrete slope, a secondary vibrating process is adopted to improve the compactness of the concrete, the vibration is carried out before the initial setting of the concrete, the elevation is checked during the vibration of the concrete, an iron plate is used for leveling, and the watering maintenance is carried out after 12-13h separation; backfilling earthwork by manually adopting an excavator, an iron shovel and a pick, tamping by a frog tamper, wherein the virtual pavement thickness of each layer is less than or equal to 250mm, performing a cutting ring sampling test according to the standard requirement after tamping of each layer, and performing construction on the next backfilled soil layer after inspection.

In the step (3), the broken stone cushion layer is paved by adopting a rough stone cushion layer with the thickness of 50-60cm, the virtual paving thickness is preferably 20-30mm larger than the design thickness, the allowable deviation of the top surface elevation of the broken stone cushion layer is +/-15 mm, and the surface flatness is 20 mm; the concrete steps of the pavement water-stable layer construction are detection of the subbase layer → construction lofting → water-stable transportation → paving → static pressure → leveling → rolling → fine leveling → curing.

The steel pipe pile is adopted for the foundation pile construction in the step (4), and the pile sinking step of the steel pipe pile is plant area road construction → measurement and paying-off → pile machine in place → steel pipe pile hoisting → pile position inspection → pile lowering → first pile sinking → pile welding → pile splicing → second pile sinking → measurement and deviation → pile feeding → hammer stopping standard achievement → machine moving to the next pile position; wherein the welding pile extension: and stopping hammering when the first section of pile is sunk to the position that the pile top is 60-80 mm higher than the ground, and connecting the pile.

The specific steps in the step (5) are as follows: measuring and lofting, breaking pile heads, accurately lofting, manufacturing and installing reinforcing steel bars, manufacturing and installing templates, mixing, transporting and pouring concrete, and removing and maintaining the concrete; the bearing platform is divided into a plurality of sections according to the actual measured excavation depth of 1: 1, slope releasing at a gradient; tamping the bottom of the foundation pit, and then pouring 10cm of mortar to seal the bottom; adopting a wood template, and completing layered pouring; the pouring thickness of each layer of concrete is controlled to be about 30cm, and the upper layer of concrete is poured before the lower layer of concrete is initially set or can be remolded.

The steel sheet piles in the step (7) are of Larsen steel sheet pile IV type, the pile length is 12m, the enclosing purlins are arranged on two sides, and the clear distance between the two sides of the enclosing purlins is 8-10mm larger than the width of the inserted sheet piles; in order to ensure the accurate inserting and driving position of the steel sheet pile, firstly, a positioning pile is arranged, the positioning pile adopts a steel pipe pile with the diameter of 50cm and the wall thickness of 10mm, and the driving depth is 5-7m according to different soil qualities; the guide beam is processed by 20I-shaped steel; the thickness of the plain concrete is 30-40 cm.

The sand basin in the step (8) comprises a pickling tank, an alkali washing tank and a sand washing area, a C15 concrete cushion layer with the thickness of 10-15cm and C30 bottom plate concrete with the thickness of 25-30cm are sequentially covered on the asphalt waterproof coiled material, and C30 reinforced concrete with the thickness of 25-30cm is adopted on the wall of the basin; the two sides of the grit chamber and the overflow weir are built by bricks. And after the concrete wall reinforcing steel bars of the drainage well and the steel sheet piles of the sedimentation tank are firmly welded, erecting a mold and pouring concrete, and filling the joint by adopting modified epoxy resin crack pouring glue.

After the asphalt waterproof coiled material is laid in the step (9), plain concrete with the thickness of 30cm is covered on the asphalt waterproof coiled material, and the pool wall is constructed: firstly, throwing 50-60cm thick stone blocks, sequentially laying 10-15cm of concrete cushion and asphalt waterproof coiled materials on the stone blocks, and then performing C30 reinforced concrete retaining wall construction on the stone blocks.

After the asphalt waterproof coiled material is laid in the step (10), a C15 plain concrete cushion layer with the thickness of 5-10cm and C30 reinforced concrete with the thickness of 30-35cm are sequentially covered on the asphalt waterproof coiled material; the pool wall is made of C30 reinforced concrete with the thickness of 30-35 cm.

Example 2

A civil engineering structure construction method of a bottom mud treatment plant mainly comprises a plant area road, a dehydration workshop, a pump room, a super-magnetic water purification workshop, a charging bucket workshop, a sedimentation tank, a grit chamber, a sand dump, a residual water tank, a conditioning tank, a mud cake storehouse, an external bottom mud treatment area and infrastructure; the construction method comprises the following steps:

(11) constructing a mud cake warehouse;

Steel sheet pile support construction process

Although the driving of the steel sheet piles is finished before the excavation of the foundation pit, the whole sheet pile supporting structure needs to be completely finished after the construction and the backfilling of the underground structure are finished, and the sheet piles are pulled out under the allowed conditions. Therefore, the construction of the steel sheet pile should consider the construction of driving, digging, supporting and underground structure construction

Driving of steel sheet pile

The construction machinery adopts a 50T crawler crane and is matched with a vibration hammer for construction. And (3) setting a piling purlin bracket (a guide frame). In order to ensure the perpendicularity of the steel sheet pile sinking pile and the flatness of the wall surface of the board-driving wall, a pile-driving surrounding purlin support is arranged when the steel sheet pile is driven, and the surrounding purlin support consists of a surrounding purlin and surrounding purlin piles.

The lower layer purlin can be arranged at a position which is about 500mm away from the ground. The purlin surrounding bracket is made of H-shaped steel. And the enclosing purlins and the enclosing purlin piles are welded by connecting plates.

The waterproof coiled material is paved by adopting a wet paving method, and the concrete steps are as follows: cleaning a base layer → preparing special cement slurry → positioning, snapping, trial paving → scraping the cement slurry → removing the isolation paper on the bottom surface of the coiled material → paving the coiled material → rolling, exhausting, compacting → adhering a seam opening → rolling the seam, exhausting, compacting → sewing the seam opening, closing the end, sealing the node → checking, finishing → checking → constructing a protective layer.

The coiled material is paved by the following steps:

spreading: cutting the material to be paved into rolls, reversely paving the cut material on the base surface, stripping all the isolation paper of the roll material, sticking one end of the roll material on a preset position, sticking the roll material forwards along a reference line, and then rolling and exhausting towards two sides by a compression roller to firmly stick the roll material.

Or ② a rolling and spreading method: lifting and stripping the isolation paper and paving the coiled material at the same time, lifting the coiled material to a preset position to be paved, aligning the datum line, lifting the isolation paper on the bottom surface of the coiled material, fixing one end of the coiled material, unfolding the coiled material by about 500mm, and then pushing the coiled material while rolling, exhausting and sticking the air to two sides and the front by using a press roller.

And (3) pasting the seams of the coiled materials: cleaning the surface of the to-be-bonded coil material; lifting off the bonding isolation paper on the bottom surface of the lap joint coiled material, and immediately bonding, exhausting, rolling and firmly bonding (if the temperature is low, heating by a heater); and scraping and pressing the overflow glue extruded from the seam tightly. The lapping width of the coiled material is 60mm on the roof, and the underground engineering is 100 mm.

Example 3

(11) constructing a mud cake warehouse;

The grit chamber can generate odor, so that the upper part of the grit chamber is additionally provided with a gas collecting hood and an exhaust fan, and the odor is conveyed to a pickling tank and an alkali washing tank through pipelines for aeration digestion.

The pickling tank and the alkaline washing tank are both of reinforced concrete structures, the length of each pickling tank is 17m, the width of each pickling tank is 4m, the depth of each pickling tank is 2m, acid-resistant bricks are lined in the pickling tank, and after the acid-resistant bricks are dried completely, anticorrosion measures are taken on the surfaces of the acid-resistant bricks.

The method for corrosion prevention comprises the following steps:

filling the bee holes with FHW62-1 structural cement, leveling a concrete base layer, blade-coating a layer, and maintaining for 24 hours, wherein the thinnest part of the layer is not less than 1.0 mm;

coating FHW62 and immediately pressing a layer of glass fiber cloth, wherein the thickness of the adhesive layer is 0.12-0.15 mm, and maintaining for 24 hours;

and thirdly, coating a layer of the adhesive layer with FHW62, wherein the thickness of the adhesive layer is 0.12-0.15 mm, and curing for 4 days.

Note that:

firstly, the lap joint of the glass cotton cloth is not less than 150mm, each layer of fiber cloth is arranged in a criss-cross mode, and the construction requirements strictly meet the requirements in the product specification.

Secondly, the surfaces of the acid-resistant bricks at the bottom of the tank, the walls of the tank and the two sides of the partition plate are connected with the tank top reliably to form an integral anticorrosive layer. And is reliably connected with the reserved sleeve to form a closed anticorrosive coating.

In addition, in order to achieve better technical effects, the technical solutions in the above embodiments may be combined arbitrarily to meet various requirements of practical applications.

According to the embodiment, the construction efficiency of civil engineering is greatly improved, and the construction period of bottom mud treatment plant engineering can be greatly prolonged; the construction method also solves the problem of difficult introduction of large-scale equipment, can improve the one-time introduction and position rate of the large-scale equipment, reduces the installation difficulty and improves the installation quality.

The plant area plane arrangement of the bottom mud treatment plant is reasonable, the utilization rate of land resources can be effectively improved, and the influence of plant area operation on the external environment is reduced; the efficiency of site operation is high, the construction is convenient, and the environmental pollution is small; the structure wholeness is good, the roughness is high, the shock attenuation is effectual.

The invention lays a foundation for building a sediment treatment plant, and reduces manpower, material resources and time spent in civil engineering structure construction.

The invention can effectively control the construction cost.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims

1. A civil engineering structure construction method of a bottom mud treatment plant is characterized in that the civil engineering structure mainly comprises a plant area road, a dehydration workshop, a pump room, a super-magnetic water purification workshop, a charging bucket workshop, a sedimentation tank, a grit chamber, a sand storage yard, a surplus water tank, a conditioning tank, a mud cake warehouse, an external bottom mud treatment area and infrastructure; the construction method comprises the following steps:

(11) constructing a mud cake warehouse;

2. The civil engineering structure construction method of a bottom sediment disposal plant according to claim 1, wherein the concrete steps when the construction control net is established in the step (1) are construction preparation → control point transfer and recheck → survey and design control net → control net trial and error → construction control → construction recheck; when the construction base line and the leveling point are arranged, the construction base line is mainly measured by a total station, and a plane control system is established by adopting an axis network measuring method; and dynamic real-time differential GPS technology is adopted during land plane positioning.

3. The civil engineering structure construction method of the bottom mud treatment plant according to the claim 1-2, characterized in that, the main parts in the step (2) comprise a conditioning tank, a dehydration workshop, a super magnetic water purification workshop, a mud cake storehouse and a main office area of the plant area; excavating earthwork by mechanical and manual cooperation in sections in sequence, pouring and tamping a concrete cushion immediately after construction is finished, and widening each side of the cushion by 150-200mm of foundation size during construction so as to facilitate installation of a foundation template; the concrete is vibrated from the bottom of the concrete slope to the top of the concrete slope, a secondary vibrating process is adopted to improve the compactness of the concrete, the vibration is carried out before the initial setting of the concrete, the elevation is checked during the vibration of the concrete, an iron plate is used for leveling, and the watering maintenance is carried out after 12-13h separation; backfilling earthwork by manually adopting an excavator, an iron shovel and a pick, tamping by a frog tamper, wherein the virtual pavement thickness of each layer is less than or equal to 250mm, performing a cutting ring sampling test according to the standard requirement after tamping of each layer, and performing construction on the next backfilled soil layer after inspection.

4. The civil engineering structure construction method of the bottom sediment disposal plant according to the claim 1 to 3, characterized in that the broken stone cushion layer in the step (3) is paved by a rough stone cushion layer with the thickness of 50 to 60cm, the virtual paving thickness is preferably 20 to 30mm larger than the design thickness, the allowable deviation of the top surface elevation of the broken stone cushion layer is plus or minus 15mm, and the surface flatness is 20 mm; the concrete steps of the pavement water-stable layer construction are detection of the subbase layer → construction lofting → water-stable transportation → paving → static pressure → leveling → rolling → fine leveling → curing.

5. The civil engineering structure construction method of the bottom mud treatment plant according to claim 1 to 4, wherein the foundation pile construction in the step (4) is a steel pipe pile, and the step of sinking the steel pipe pile is plant road construction → measurement and line release → pile driver in place → hoisting the steel pipe pile → inspection pile position → pile sinking → first section pile sinking → welding pile → sinking second section pile → measurement deviation → pile feeding → achievement of the standard of hammer stopping → machine shifting to the next pile position; wherein the welding pile extension: and stopping hammering when the first section of pile is sunk to the position that the pile top is 60-80 mm higher than the ground, and connecting the pile.

6. The civil engineering structure construction method of a bottom sediment disposal plant according to claim 5, wherein the concrete steps in the step (5) are: measuring and lofting, breaking pile heads, accurately lofting, manufacturing and installing reinforcing steel bars, manufacturing and installing templates, mixing, transporting and pouring concrete, and removing and maintaining the concrete; the bearing platform is divided into a plurality of sections according to the actual measured excavation depth of 1: 1, slope releasing at a gradient; tamping the bottom of the foundation pit, and then pouring 10cm of mortar to seal the bottom; adopting a wood template, and completing layered pouring; the pouring thickness of each layer of concrete is controlled to be about 30cm, and the upper layer of concrete is poured before the lower layer of concrete is initially set or can be remolded.

7. The civil construction method of the bottom mud treatment plant according to claim 1 to 6, wherein the steel sheet pile in step (7) is of Larsen steel sheet pile type IV, the pile length is 12m, the enclosing purlins are arranged in a double-sided mode, and the clear distance between the double-sided enclosing purlins is 8-10mm larger than the width of the inserted sheet pile; in order to ensure the accurate inserting and driving position of the steel sheet pile, firstly, a positioning pile is arranged, the positioning pile adopts a steel pipe pile with the diameter of 50cm and the wall thickness of 10mm, and the driving depth is 5-7m according to different soil qualities; the guide beam is processed by 20I-shaped steel; the thickness of the plain concrete is 30-40 cm.

8. The civil engineering structure construction method of the bottom mud treatment plant of claim 1 to 7, characterized in that, the grit chamber in the step (8) comprises an acid washing chamber, an alkali washing chamber and a sand washing area, asphalt waterproof coiled materials are laid on the grit chamber, a C15 concrete cushion layer with the thickness of 10 to 15cm and C30 bottom plate concrete with the thickness of 25 to 30cm are sequentially covered on the grit chamber, and C30 reinforced concrete with the thickness of 25 to 30cm is adopted on the chamber wall; the two sides of the grit chamber and the overflow weir are built by bricks, the concrete is poured by erecting a mould after the concrete wall reinforcing steel bars of the drainage well and the steel sheet piles of the sedimentation tank are firmly welded, and the joint is filled by modified epoxy resin crack pouring glue.

9. The civil engineering structure construction method of the bottom sediment disposal plant according to claim 1 to 8, wherein the step (9) is performed by laying the asphalt waterproof roll and then covering the asphalt waterproof roll with 30cm thick plain concrete, and constructing the pool wall: firstly, throwing 50-60cm thick stone blocks, sequentially laying 10-15cm of concrete cushion and asphalt waterproof coiled materials on the stone blocks, and then performing C30 reinforced concrete retaining wall construction on the stone blocks.

10. The civil engineering structure construction method of the bottom sediment disposal plant according to claim 9, wherein the asphalt waterproofing roll is laid in the step (10) and then covered with a 5-10cm thick C15 plain concrete mat and 30-35cm thick C30 reinforced concrete in this order; the pool wall is made of C30 reinforced concrete with the thickness of 30-35 cm.