CN101344004A - Mounting method of deep well high pressure aeration reactor steel drum - Google Patents
Mounting method of deep well high pressure aeration reactor steel drum Download PDFInfo
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- CN101344004A CN101344004A CNA2008101507018A CN200810150701A CN101344004A CN 101344004 A CN101344004 A CN 101344004A CN A2008101507018 A CNA2008101507018 A CN A2008101507018A CN 200810150701 A CN200810150701 A CN 200810150701A CN 101344004 A CN101344004 A CN 101344004A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses an installation method for a steel cylinder of a high-pressure aeration reactor of a deep well, comprising the following steps of: processing and manufacturing an inner baffle; determining the installation position of the inner baffle: the steel cylinder consists of a plurality of groups of steel cylinder sections from bottom to top, the inner baffle is arranged on the steel cylinder section with the number of M and the length ratio of the upper part and the lower part of the inner baffle is 2.5 to 4.0 : 6.0 to 7.5; installing a plurality of groups of steel cylinder sections of the lower part of the inner baffle in sequence from bottom to top; installing the inner baffle; sinking and temporarily fixing the steel cylinder section with the number of M+1; sinking and installing the steel cylinder section with the number of M+2 after the pressure in the cylinder is transmitted up uniformly and installing a plurality of groups of steel cylinder sections of the upper part in sequence according to the installation method thereof; pouring concrete or mortar to the outside of the steel cylinder; releasing the pressure and carrying out cutting recovery of the inner baffle. The invention can solve the lifting problem of the steel cylinder and the instability and distortion problem of the steel cylinder under the effect of the side pressure of the slurry outside of the cylinder, can ensure that the steel cylinder sinks to the designed elevation safely and smoothly and can save the construction cost.
Description
Technical field
The present invention relates to the heavy duty service technical field of construction, particularly relate to a kind of mounting method of deep well high pressure aeration reactor steel drum.
Background technology
At present, research and develop the deep well high pressure aeration reactor of producing at Canada, the diameter of this reactor steel drum is that 3200mm, wall thickness are 20mm, are 92m deeply, the big and Heavy Weight of its volume, thereby the installation to this steel drum is very difficult, not easy to operate in the practice.Because the steel drum degree of depth of this reactor is bigger, in the actual installation process, generally all adopt steel drum is divided into the modes that many groups divide into groups to install from bottom to up installs, be divided into 13 groups mostly.
And the mounting method that Canadian producer provided is the suspension method sinking method of pouring water promptly adopts the pour water mode of sinking steel drum of suspension method that this steel drum is installed.But the mounting method that adopts above-mentioned Canada side to provide at the 1# well construction time, the situation of the serious buckling deformation of steel drum occurs, finally causes steel drum and wellhole all to scrap, and its direct economic loss reaches about 4,000,000 yuan.Thereby, fact proved adopt present suspension method to pour water the mounting means of sinking steel drum can not success.
Thereby, when the 2# well construction, use the mounting means of 20T Chain block lifting sinking steel drum instead, and the inside and outside water-head of strict control steel drum.But, when steel drum sinks down into the 7th group, lifting weight surpasses 40T, consider that 4 Chain blocks that arrive 20T when imbalance is stressed, only have 2 cucurbits stressed, and also have uneven stressed situation between 2 stressed cucurbits, then exceeded the specified stressed of cucurbit, and up connect high steel drum more, stressed big more, dangerous more.In addition, in lifting during the 12nd, 13 group of steel drum, technically require that water level is higher than the water level 3-5m hole in the steel drum, be out of shape to prevent steel drum, at this moment, the weight of lifting will reach 150T, and when adopting 4 or 8 Chain blocks, more be difficult to guarantee stress equalization, stressed synchronously.But, on the cucurbit description, clearly indicate.Forbid with the Chain block hoisting heavy more than 2.Therefore, above-mentioned employing is also inadvisable with the constructure scheme of 4 or 8 Chain block installation steel drums.
If adopt mobile crane or crawler crane to lift, then need use the loop wheel machine of 300T, but the loop wheel machine requirement all can not be satisfied in an interior road, ground, aperture etc. at this moment; Simultaneously, along with steel drum sinks, the proportion of mud increases gradually in the hole in, thereby the lateral pressure of steel drum is increased gradually, causes the safety reduction of steel drum, and is final then the whole buckling deformation of steel drum may occur.The construction technique that is adopted as 1# hole steel drum, in the process that steel drum is installed with regard to Ceng Yinkong in the side pressure effect of mud, and cause the serious buckling deformation of steel drum.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned deficiency of the prior art, a kind of mounting method of deep well high pressure aeration reactor steel drum is provided, can effectively solve the lifting problem of the steel drum buckling deformation problem under the effect of mud lateral pressure and steel drum outside bucket, can guarantee steel drum can safety, successfully sink to design elevation and can save construction cost.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of mounting method of deep well high pressure aeration reactor steel drum is characterized in that this method may further comprise the steps:
(a) processing and fabricating internal partition:, determine to be installed in the structure and the size of the internal partition of steel drum inside according to the internal construction and the size of steel drum; Described internal partition is provided with pressurization hole, steam vent and moisturizing hole;
(b) determine the installation site of internal partition according to the degree of depth of steel drum: described steel drum is assemblied to form by the many groups steel drum section that is numbered 1～M, M+1 and M+2～N from top to bottom successively; Described internal partition is divided into up and down two parts with steel drum, and the length ratio between the steel drum top and the bottom is 2.5～4.0: 6.0～7.5, correspondingly determines the internal partition level is installed on the steel drum section that is numbered M;
(c), sink to installing the many groups steel drum section that is numbered 1～M earlier from the bottom to top successively according to the conventional suspension method sinking steel drum of pouring water;
(d) internal partition is installed: internal partition is installed on the steel drum section top that is numbered M, and above internal partition, be provided with and strengthen beam in length and breadth, and corresponding forcing pipe, stack and the filling pipe one that all has valve of on pressurization hole, steam vent and the moisturizing hole of internal partition, installing, the length of described forcing pipe is corresponding with the length of the steel drum section that is numbered M+1, forcing pipe upper end setting pressure machine and pressure meter;
(e) sink and temporary fixed installation is numbered the steel drum section of M+1: on internal partition described in the step (d), connect high and fixed number is the steel drum section of M+1, and between forcing pipe of in step (d), being installed and the steel drum section inwall that is numbered M+1 a plurality of firmwares are set; Adopt conventional hanging method at twice the steel drum section that is numbered M+1 to be lifted sinking, the steel drum section that adds water and will be numbered M+1 in steel drum by described filling pipe one of sinking of lifting is for the first time sunk half, guarantee in the process of sinking in the steel drum bucket with the outer water-head of bucket be 2.5-3m, add the water shutoff moisturizing hole, back that finishes; Pressurizeed in the bucket of described steel drum by forcing pipe by forcing press, internal partition below, feasible pressurization back barrel interior pressure is 1.5-3.5Kg/cm again
2Second half of steel drum section that lifting for the second time sinks will be numbered M+1 directly lifts sinking;
(f) the steel drum section that is numbered M+2 sink to be installed: at first in step (e), connect high on the steel drum section of the mounted M+1 of being numbered and fixed number is the steel drum section of M+2, corresponding connect the forcing pipe of being installed in the high step (e) and connect high height highly corresponding with the steel drum section that is numbered M+2; To connect pressurization in the high forcing pipe 4, the valve of opening high forcing pipe 4 belows that connect again evenly transmits the steel drum pressure inside to come up by forcing press; Afterwards, pressurize or step-down in steel drum by forcing press, the pressure in the bucket of internal partition below is controlled at 1.5-3.5Kg/cm the most at last
2
Filling pipe two is installed above the steel drum section that is numbered M+2 of being installed, in steel drum, add water by described filling pipe two, the height that the limit adds waterside sinking steel drum and add water in steel drum is identical with the height that steel drum sinks, guarantee in the sinking process that the water-head that the steel drum bucket is interior and bucket is outer is 7-12m, steel drum interior force value in internal partition below remains unchanged;
(g) according to the method for sinking to installing the steel drum section that is numbered M+2 described in the step (f), sink the many groups steel drum section that is numbered M+2～N is installed successively, so far finish the sinking of whole steel drum and install;
(h) whole steel drum outer filling concrete or the mortar in described step (g), the perfusion back guaranteed that steel drum bucket internal pressure remains unchanged in many days;
(i) cutting of release, internal partition is reclaimed: after treating that institute's concrete that pour into or mortar solidify and reach design strength, and with the whole removals of pressure above the internal partition in the steel drum bucket, and dismounting forcing pipe, forcing press and pressure meter; With internal partition cutting and recovery, in steel drum, add water by filling pipe two described in the step (f) simultaneously again.
The bucket wall inboard of the top steel drum section that internal partition described in the step (d) is above also be provided with a plurality of levels to reinforcing ring.
The diameter of described steel drum is that 3200mm, wall thickness are 20mm, are 92m deeply, and it is combined by 13 groups of steel drum sections; Internal partition described in the step (a) is the Q235B steel plate, and thick is 20mm, and diameter is 3180mm, and the diameter of described pressurization hole, steam vent is 20-25mm; Internal partition described in the step (b) is divided into two parts up and down with steel drum, length ratio between its top and the bottom is 3: 7, corresponding determine internal partition is installed in be numbered 9 steel drum section promptly on the 9th group of steel drum section, and it is arranged at position apart from the 9th group of steel drum section bung 0.9-1.1m; The quantity of reinforcing ring described in the step (d) is that two and opsition dependent are divided into reinforcing ring and following reinforcing ring, spacing＜described steel drum bung between the spacing between following reinforcing ring and internal partition＜last reinforcing ring and following reinforcing ring and the spacing between last reinforcing ring.
In the sinking process described in the step (f), a steel drum bucket water-head interior and that bucket is outer is 7-8m; Pressure in step (f) and the step (g) in the steel drum of internal partition below is 2.8-3Kg/cm
2
Spacing between described reinforcing ring down and internal partition is 8m, and the described spacing that goes up between reinforcing ring and following reinforcing ring is 9m.
Described forcing pipe is a galvanized pipe.
The diameter in moisturizing hole is 9-11cm described in the step (a); Valve described in the step (d) is can pressure-bearing 16Kg/cm
2Stainless valve; The lower end of stack flushes with the soffit of internal partition described in the step (d), and fixes, seals with internal partition (1) full weld, and internal partition upper surface 0.8-1.2m is exposed in the stack upper end, and 2 valves and 1 plug are installed on it.
Stiffening girder described in the step (d) is the stiffening girder of being made up of i iron in length and breadth; Firmware described in the step (e) is connection wall bar.
When the temporary fixed installation described in the step (e) is numbered the steel drum section of M+1, adopt the bracket of a plurality of band supporting plates to carry out temporary fixed.
Release described in the step (i), internal partition cutting and recovery mainly may further comprise the steps:
Step 1: the water of internal partition top in the described whole steel drum bucket is drained;
Step 2: open all valves on the forcing pipe, the hydraulic pressure in the forcing pipe is unloaded be depressed into pressure-less state;
Step 3: extract the water of internal partition below out the 18-20cm height, and remove forcing pipe (4), forcing press and pressure meter;
Step 4: adopt the stiffening girder of cutting tool cutting internal partition top and described steel drum outside is sent in its lifting, the cutting part crator is carried out grinding process;
Step 5: left and right two and half parts that adopt cutting tool successively to cut internal partition, and it is lifted separately send described steel drum outside, and the cutting part crator is carried out grinding process;
Step 6: in steel drum, add water to down 1.3-1.5m place under the reinforcing ring by filling pipe two described in the step (f), adopt the following reinforcing ring of cutting tool cutting and described steel drum outside is sent in its lifting, the cutting part crator is carried out grinding process;
Step 7: add water to 1.3-1.5m place under the reinforcing ring by filling pipe described in the step 6 two in steel drum, the cutting of employing cutting tool is gone up reinforcing ring and described steel drum outside is sent in its lifting, and the cutting part crator is carried out grinding process;
Step 8: in steel drum, add water to apart from well head 0.4-0.6m;
Step 9: measure hole depth and aperture in the described steel drum, finish and inspect for acceptance.
The present invention compared with prior art has the following advantages: 1, can effectively solve steel drum buckling deformation problem under the effect of mud lateral pressure outside bucket, guarantee steel drum unstability, indeformable not in the sinking process: the diameter of research and develop production at Canada is that 3200mm, wall thickness are 20mm, are the steel drum of the deep well high pressure aeration reactor of 92m deeply, in the 9th group of steel drum section, add internal partition, 13 groups of steel drum sections are divided into two parts up and down, the bottom is 63.7m, top is 28m, the about 3Kg/cm of pressurization in top: the bottom ≈ 0.3: 0.7, the steel drum of its internal partition bottom
3Guaranteed hydraulic pressure in the steel drum greater than the outer mud of steel drum to the lateral pressure of steel drum more than 2 times, be enough to resist mud to the lateral pressure of steel drum, the flowing pressure when steel drum sinks, the eccentric force when pouring water during, the bending power that steel drum is wiped hole wall etc., thereby guaranteed the unlikely buckling deformation that occurs of steel drum the impact force of steel drum, steel drum lifting; Thereby it is the opening pressure-less state in the steel drum that this installation method can overcome in the original technology, and respective steel inner bucket water pressure is lower than the pressure of the outer mud of steel drum to steel drum, finally causes the realistic problem of steel drum buckling deformation; 2, can effectively solve the lifting problem of steel drum, when the steel drum on internal partition top is installed, can keep the inner bucket water position, increase buoyancy 80-100T like this, thereby alleviate lifting weight greatly than the low 10-12m of the outer water level of bucket; On the other hand, make ground, aperture not bear excessive point load, also can effectively prevent to collapse the hole, the aperture, hole collapses, thereby this installation method can guarantee with steel drum safety, successfully to sink to design elevation, and in the process of sinking, both guarantee the safety (security performance improves 2 times) of structure, also guaranteed the safety on ground, aperture; 3, under the prerequisite of ensuring the quality of products with safety, reduced the difficulty (workable, as not need the strict demand of large tonnage crane and large tonnage crane) and cost (can reduce installation cost 50%) of construction again to road, place, kill two birds with one stone.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is for the used internal partition of the present invention and strengthen the structural representation of beam in length and breadth.
Fig. 2 is the structural representation of set reinforcing ring in the steel drum of top of the present invention.
Structural representation when Fig. 3 installs the 10th group of steel drum section for sinking in the steel drum.
Structural representation when Fig. 4 installs the 11st group of steel drum section for sinking in the steel drum.
Description of reference numerals:
The 1-internal partition; The 9th group of steel drum section of 2-; 3-strengthens beam in length and breadth;
The 4-forcing pipe; The 5-stack; 6-connection wall bar;
7-moisturizing hole; The 8-hole of pressurizeing; The 9-steam vent;
The 10th group of steel drum section of 10-; The 11-pressure meter; The 12-forcing press;
The 11st group of steel drum section of 13-; The last reinforcing ring of 14-; Reinforcing ring under the 15-;
The 16-stainless valve; 17-water; The 18-steel drum;
The 19-exhaust opening; 20-pressurizes mouthful.
The specific embodiment
In conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the mounting method of a kind of deep well high pressure aeration reactor steel drum of the present invention may further comprise the steps:
The first step, processing and fabricating internal partition 1:, determine to be installed in the structure and the size of its inner internal partition 1 according to the internal construction and the size of described steel drum 18; Simultaneously, internal partition 1 is provided with pressurization hole 8, steam vent 9 and moisturizing hole 7.In this specific embodiment, the diameter of steel drum 18 is that 3200mm, wall thickness are 20mm, are 92m deeply, and it is combined by 13 groups of steel drum sections that are numbered 1～13.Selected is the Q235B steel plate by the internal partition of installing 1, and it is thick to be 20mm, and diameter is 3180mm; And the diameter of pressurization hole of being offered on the internal partition 18 and steam vent 9 is 20-25mm, and the diameter in moisturizing hole 7 is 9-11cm.Weld with the inwall level of steel drum 18 around the internal partition 1, and pressing force container grade III Standard requires to weld and check and accept.
Second goes on foot, determines according to the degree of depth of described steel drum 18 installation site of internal partition 1: described steel drum 18 is assemblied to form by the many groups steel drum section that is numbered 1～M, M+1 and M+2～N from top to bottom successively; Described internal partition 1 is divided into up and down two parts with steel drum 18, and the length ratio between its top and the bottom is 2.5～4.0: 6.0～7.5, correspondingly determines internal partition 1 is installed on the steel drum section that is numbered M.In this specific embodiment, whole steel drum 18 is made up of 13 groups of steel drum sections from bottom to up successively, and internal partition 1 is divided into up and down two parts with steel drum 18, and the length ratio between its top and the bottom is 3: 7, corresponding determine internal partition 1 is installed in be numbered 9 steel drum section promptly on the 9th group of steel drum section 2.
The 3rd step, according to the conventional suspension method sinking steel drum 18 of pouring water, sink to installing the many groups steel drum section that is numbered 1～M earlier from the bottom to top successively.In the present embodiment, promptly adopt conventional suspension method to pour water and sink to being numbered nine groups of bottom steel drum sections of 1～9.
The 4th step, installation internal partition 1: internal partition 1 is installed on the described steel drum section top that is numbered M, and above internal partition 1, be provided with and strengthen beam 3 in length and breadth, and correspondence is installed forcing pipe 4, stack 5 and the filling pipe one that all has valve on pressurization hole 8, steam vent 9 and moisturizing hole 7, the length of described forcing pipe 4 is corresponding with the length of the steel drum section that is numbered M, forcing pipe 4 upper end setting pressure machine 12 and pressure meters 11.Wherein, stiffening girder is the stiffening girder of being made up of i iron in length and breadth 3, its in length and breadth stiffening girder 3 be weldingly fixed on the internal partition 1, and its around the outside all be welded on the inwall of steel drum 18.And forcing pipe 4 is a galvanized pipe, and the valve of being installed is energy pressure-bearing 16Kg/cm
2Stainless valve 16.In addition, the bucket wall inboard of the top steel drum section of internal partition more than 1 also is provided with a plurality of levels to reinforcing ring, and the quantity of reinforcing ring is two, two reinforcing ring opsition dependents are divided into reinforcing ring 14 and following reinforcing ring 15, the spacing that spacing＜described whole steel drum 18 bungs that the spacing that following reinforcing ring 15 and internal partition are 1＜last reinforcing ring 14 and following reinforcing ring are 15 and last reinforcing ring are 14.
In this specific embodiment, internal partition 1 is being installed apart from the position of the 9th group of steel drum section 2 bung 0.9-1.1m, and internal partition 1 is provided with the reinforcement be made up of horizontal 5, vertical 5 i iron beam 3 in length and breadth.On pressurization hole 8, steam vent 9 and moisturizing hole 7 forcing pipe 4, stack 5 and the filling pipe one that all has valve is installed, wherein, the length of the length of forcing pipe 4 and the 10th group of steel drum section 10 is complementary, and on the forcing pipe 41 energy pressure-bearing 16Kg/cm is installed
2 Stainless valve 16; And the lower end of stack 5 flushes with the soffit of internal partition 1, and fixes, seals with internal partition 1 full weld, and stack 5 upper ends expose internal partition 1 upper surface 0.8-1.2m, and stainless valve 16 and 1 plug of 2 energy pressure-bearing 16Kg/cm2 is installed on it.The spacing that following reinforcing ring 15 that internal partition 1 top is set and internal partition are 1 is 8m, and the spacing that goes up 15 of reinforcing ring 14 and following reinforcing rings is 9m.
The 5th step, sink and temporary fixed installation is numbered the steel drum section of M+1: at first on the internal partition 1 described in the 4th step, connect high and fixed number is the steel drum section of M+1, and between forcing pipe of in the 4th step, being installed 4 and the steel drum section inwall that is numbered M+1 a plurality of firmwares are set, to guarantee the firm of forcing pipe 4 pipelines, its firmware is connection wall bar 6.
Afterwards, adopt conventional hanging method at twice described M+1 group steel drum section to be lifted sinking, the steel drum section that adds water and will be numbered M+1 in steel drum by described filling pipe one of sinking of lifting is for the first time sunk half, guarantee in the process of sinking in the steel drum bucket with the outer water-head of bucket be 2.5-3m, add the water shutoff moisturizing hole, back that finishes; Pressurizeed in the bucket of described steel drum by forcing pipe by forcing press, internal partition below, feasible pressurization back barrel interior pressure is 1.5-3.5Kg/cm again
2Second half of steel drum section that lifting for the second time sinks will be numbered M+1 directly sinks.
In this specific embodiment, on internal partition 1, connect high and fixed number and be i.e. the 10th group of steel drum section 10 of 10 steel drum section, and be provided with a connection wall bar 6 every 2m between the forcing pipe of in the 4th step, being installed 4 and the inwall of the 10th group of steel drum section 10, to guarantee the firm of forcing pipe 4 pipelines.Afterwards, adopt conventional hanging method at twice described the 10th group of steel drum section 10 to be lifted sinking.Under the state that in steel drum 18, adds water, the 10th group of steel drum section 10 sunk half for the first time, during sinking, add water and limit by filling pipe one and add the waterside, in the process of sinking, because this moment does not pressurize in internal partition 1 below, thereby be controlled at 2.5-3m with the outer water-head of bucket in 18 barrels of the steel drums.After adding water and finishing, with the steel plate shutoff moisturizing hole 7 of diameter 15cm, thick 25mm and steel plate with 1 full weld of internal partition and seal.Be forcing press 12 and pressurize in the bucket of described steel drum 18 from pressurization mouthfuls 20 by the pressurized equipment of being installed again by forcing pipe 4, pressurization finish and stable 15min after voltage stabilizing, detect to determine that by detected pressures table 11 the pressurizer pressure value in the internal partition 1 below bucket is 2.5Kg/cm at last
2Like this, after above-mentioned pressurization and voltage stabilizing finish, under the state that does not add water, second half of the 10th group of steel drum section 10 directly lifted sinking for the second time.And after the 10th group of steel drum section 10 sink to putting in place, be with the bracket of supporting plates temporary fixed with 4.
The 6th step, the steel drum section that is numbered M+2 sink to be installed: at first on the label described in the step (e) is the steel drum section of M+1, connect high and fixed number is the steel drum section of M+2, and connect the forcing pipe of being installed in the high step (e) 4, the forcing pipe 4 high height that connects and its upper end highly corresponding with the steel drum section that is numbered M+2 still is provided with valve; Forcing press 12 and pressure meter 11 described in the step (d) are mounted to high forcing pipe 4 upper ends that connect, by forcing press 12 by connecing forcing pipe 4 behind the height and in steel drum 18, pressurize and pressure being adjusted back (upper end of stack 5 is an exhaust opening 19) by stack 5, the valve of opening Gao Najie forcing pipe 4 lower ends that connect again with described steel drum 18 pressure inside evenly transmission come up; Afterwards, by pressurizeing or step-down in 12 pairs of steel drums 18 of forcing press, the pressure in 18 barrels of the internal partition 1 below steel drums is controlled at 1.5-3.5Kg/cm the most at last
2Filling pipe two is installed above the steel drum section that is numbered M+2 of being installed, in the bucket of steel drum 18, add water by described filling pipe two, the limit adds the waterside and adopts conventional hanging method to sink and to add the height of water in 18 barrels of steel drums identical with the height that described steel drum 18 sinks, in the process of sinking, be 7-12m with the outer water-head of bucket in 18 barrels of the steel drums, the force value in the internal partition 1 below bucket remains unchanged.
In this specific embodiment, at first the 5th step to connect high and fixed number on temporary fixed the 10th group of steel drum section 10 be i.e. the 11st group of steel drum section 13 of 11 steel drum section, and connect the forcing pipe 4 installed in high the 5th step, the forcing pipe 4 high height that connects corresponding with the height of the 11st group of steel drum section 13 and its on still be provided with valve.With pressurized equipment is that forcing press 12 and pressure meter 11 are mounted to high forcing pipe 4 upper ends that connect, in high that of connect joint forcing pipe 4 pressurization and by stack 5 pressure is adjusted after, open the valve of those high joint forcing pipe 4 belows that connect, described steel drum 18 pressure inside are evenly transmitted.Specifically be earlier the pressure in 18 barrels of the steel drums to be reduced to 2.4-2.6Kg/cm
2, and close all valves; Connect high again and the 11st group of highly corresponding joint force pipe 4 of steel drum section 13, will connect fills with water in that high joint force pipe 4 afterwards, and get rid of inner air tube; Setting pressure machine 12 and pressure meter 11 then, and in connecing that high joint force pipe 4, be pressed into 2Kg/cm
2Pressure is held and was pressed 30 minutes, and after affirmation did not have leakage, pressure was reduced to 1Kg/cm
2, the liquid that is pressed in the forcing press 12 is water 17; Close then connect high that joint forcing pipe 4 upper end valves and open the valve that is positioned at its below, pressure is evenly transmitted; Open the valve of those high joint force pipe 4 upper ends that connect at last, read the reading of pressure meter 11, pressure is controlled at 2.0-2.2Kg/cm
2Between, as do not meet, adjust with forcing press 12 pressurizations or step-down, can not be with the direct step-down of valve, because it is the valve pressure decay rate is fast, dangerous.The outer water-head of bucket is 7m in this moment 18 barrels of the steel drums, and water column height in the internal partition 1 upward pressure pipe 4 are 8.2m, and pressure is 2+0.8=2.8Kg/cm below the dividing plate
2, this moment, steel drum 18 was in a safe condition.
Then, promptly above the 11st group of steel drum section 13 filling pipe two is installed in 11 the steel drum section of being numbered of being installed, in 18 barrels of steel drums, add water by described filling pipe two, the limit add the waterside adopt conventional hanging method to sink and the height that in bucket, adds water identical with the height that described steel drum 18 sinks, in the process of sinking, be 7-8m with the outer water-head of bucket in 18 barrels of the steel drums, the force value in the internal partition 1 below bucket remains unchanged.Specifically be, at first steel drum 18 promoted 1-2cm, cut off bracket with Chain block with 4 20T, steel drum 18 decline 1m, water filling 1m height in bucket circulates and constructs simultaneously, sinks to putting in place until the 11st group of steel drum section 13.In the sinking process, the inside and outside water-head controlling value of bucket is 7-8m, and along with steel drum 18 sinks, pressure meter 11 readings can raise, every sinking 1m, the reading rising 0.1Kg/cm of pressure meter 11
2, the water-column in the forcing pipe 4 reduces in proportion, and the force value of internal partition 1 below remains unchanged.
The 7th step, the method for the steel drum section be numbered M+2 is installed, sinks the many groups steel drum section that is numbered M+3～N is installed successively, so far finish the sinking of whole steel drum 18 and install according to the sinking described in the 6th step.In its sinking process, water column pressure reading (force value=0.1 times water-column)=2.8-3.0Kg/cm in the above force pipe 4 of pressure meter 11 readings+inner bucket water face
2Be advisable.In this specific embodiment,, install successively being numbered 12,13 steel drum section (i.e. the 12nd group of steel drum section and the 13rd group of steel drum section) with reference to the mounting method of the 11st group of steel drum section 13.
The 8th step, whole steel drum 18 outer filling concrete or the mortars in described the 7th step, and pour into the pressure that will guarantee in afterwards many days in 18 barrels of the described whole steel drums and remain unchanged.Specifically be, poured under water mortar or under water in the concrete 7 days, will keep the stable of barrel internal pressure always, arrange the reading of special messenger every day,, increase observation frequency and carry out the adjustment of force value at any time if any unusually every a pressure meter 11 of observation in 8 hours.Pressure meter 11 will be demarcated and could use, and 2 pressure meters 11 are installed simultaneously, uses as check and correction; Force pipe 4, valve, plug all will carry out pressure test, could use after qualified.Behind the concrete pouring 2 days, the heat of hydration raises, and bucket internal pressure value can raise thereupon, wants step-down twice every day, keeps 3Kg/cm
2About steady pressure.In addition, the installation of steel drum 18, welding process must protect pressure system.
The 9th step, release, internal partition, 1 cutting was reclaimed: after treating that institute's concrete that pour into or mortar condense, and the first whole removals of pressure, and dismounting forcing pipe 4, forcing press 12 and pressure meter 11 with internal partition 1 top in 18 barrels of the described whole steel drums; With internal partition 1 cutting and recovery, in whole steel drum 18, add water by the filling pipe two described in the step f simultaneously again.Its concrete steps are:
Step 3, extract the water of internal partition 1 below out the 18-20cm height, and remove forcing pipe 4, forcing press 12 and pressure meter 11.
Hole depth and aperture in step 9, the described steel drum 18 of measurement are finished and are inspected for acceptance.
Claims (10)
1. the mounting method of a deep well high pressure aeration reactor steel drum is characterized in that this method may further comprise the steps:
(a) processing and fabricating internal partition (1):, determine to be installed in the structure and the size of the inner internal partition (1) of steel drum (18) according to the internal construction and the size of steel drum (18); Described internal partition (1) is provided with pressurization hole (8), steam vent (9) and moisturizing hole (7);
(b) determine the installation site of internal partition (1) according to the degree of depth of steel drum (18): described steel drum (18) is assemblied to form by the many groups steel drum section that is numbered 1～M, M+1 and M+2～N from top to bottom successively; Described internal partition (1) is divided into up and down two parts with steel drum (18), and the length ratio between steel drum (18) top and the bottom is 2.5～4.0: 6.0～7.5, correspondingly determines internal partition (1) level is installed on the steel drum section that is numbered M;
(c), sink to installing the many groups steel drum section that is numbered 1～M earlier from the bottom to top successively according to the conventional suspension method sinking steel drum (18) of pouring water;
(d) internal partition (1) is installed: internal partition (1) is installed on the steel drum section top that is numbered M, and above internal partition (1), be provided with and strengthen beam (3) in length and breadth, and corresponding pressurization hole (8) at internal partition (1), steam vent (9) and moisturizing hole (7) last installation all have forcing pipe (4), stack (5) and the filling pipe one of valve, the length of described forcing pipe (4) is corresponding with the length of the steel drum section that is numbered M+1, forcing pipe (4) upper end setting pressure machine (12) and pressure meter (11);
(e) sink and temporary fixed installation is numbered the steel drum section of M+1: on internal partition (1) described in the step (d), connect high and fixed number is the steel drum section of M+1, and between forcing pipe of in step (d), being installed (4) and the steel drum section inwall that is numbered M+1 a plurality of firmwares are set; Adopt conventional hanging method at twice the steel drum section that is numbered M+1 to be lifted sinking, lifting is for the first time sunk and is added the steel drum section that water also will be numbered M+1 by described filling pipe one in steel drum (18) and sink half, guarantee in the process of sinking in steel drum (18) bucket with the outer water-head of bucket be 2.5-3m, add the water shutoff moisturizing hole (7), back that finishes; Pressurizeed in the bucket of described steel drum (18) by forcing pipe (4) by forcing press (12), feasible pressurization back internal partition (1) below barrel interior pressure is 1.5-3.5Kg/cm again
2Second half of steel drum section that lifting for the second time sinks will be numbered M+1 directly lifts sinking;
(f) the steel drum section that is numbered M+2 sink to be installed: at first in step (e), connect high on the steel drum section of the mounted M+1 of being numbered and fixed number is the steel drum section of M+2, corresponding connect the forcing pipe of being installed in the high step (e) (4) and connect high height highly corresponding with the steel drum section that is numbered M+2; To connect pressurization in the high forcing pipe 4, the valve of opening high forcing pipe 4 belows that connect again evenly transmits steel drum (18) pressure inside to come up by forcing press (12); Afterwards, pressurize or step-down in steel drum (18) by forcing press (12), the pressure in the bucket of internal partition (1) below is controlled at 1.5-3.5Kg/cm the most at last
2
Filling pipe two is installed above the steel drum section that is numbered M+2 of being installed, by described filling pipe two to steel drum (18) Nei Jiashui, the height that the limit adds waterside sinking steel drum (18) and add water in steel drum (18) is identical with the height that steel drum (18) sinks, guarantee in the sinking process that the water-head that steel drum (18) bucket is interior and bucket is outer is 7-12m, the interior force value of internal partition (1) below steel drum (18) remains unchanged;
(g) according to the method for sinking to installing the steel drum section that is numbered M+2 described in the step (f), sink the many groups steel drum section that is numbered M+2～N is installed successively, so far finish the sinking of whole steel drum (18) and install;
(h) whole steel drum (18) outer filling concrete or the mortar in described step (g), perfusion back guarantee in many days that steel drum (18) bucket internal pressure remains unchanged;
(i) cutting of release, internal partition (1) is reclaimed: after treating that institute's concrete that pour into or mortar solidify and reach design strength, and with the whole removals of pressure above the internal partition (1) in steel drum (18) bucket, and dismounting forcing pipe (4), forcing press (12) and pressure meter (11); With internal partition (1) cutting and recovery, pass through filling pipe two described in the step (f) simultaneously again to steel drum (18) Nei Jiashui.
2. according to the mounting method of the described deep well high pressure aeration reactor steel drum of claim 1, it is characterized in that: the bucket wall inboard of the top steel drum section that internal partition (1) described in the step (d) is above also be provided with a plurality of levels to reinforcing ring.
3. according to the mounting method of claim 1 or 2 described deep well high pressure aeration reactor steel drums, it is characterized in that: the diameter of described steel drum (18) is that 3200mm, wall thickness are 20mm, are 92m deeply, and it is combined by 13 groups of steel drum sections; Internal partition (1) described in the step (a) is the Q235B steel plate, and thick is 20mm, and diameter is 3180mm, and the diameter of described pressurization hole (8), steam vent (9) is 20-25mm; Internal partition (1) described in the step (b) is divided into two parts up and down with steel drum (18), length ratio between its top and the bottom is 3: 7, corresponding determine internal partition (1) is installed in be numbered 9 steel drum section promptly on the 9th group of steel drum section (2), and it is arranged at apart from the position of the 9th group of steel drum section (2) bung 0.9-1.1m; The quantity of reinforcing ring described in the step (d) is that two and opsition dependent are divided into reinforcing ring (14) and following reinforcing ring (15), the spacing between following reinforcing ring (15) and internal partition (1)＜go up between reinforcing ring (14) and following reinforcing ring (15) spacing＜described steel drum (18) bung and the spacing between last reinforcing ring (14).
4. according to the mounting method of the described deep well high pressure aeration reactor steel drum of claim 3, it is characterized in that: in the sinking process described in the step (f), steel drum (a 18) bucket water-head interior and that bucket is outer is 7-8m; Pressure in step (f) and the step (g) in internal partition (1) the below steel drum (18) is 2.8-3Kg/cm
2
5. according to the mounting method of the described deep well high pressure aeration reactor steel drum of claim 3, it is characterized in that: the spacing between described reinforcing ring (15) down and internal partition (1) is 8m, and the described spacing that goes up between reinforcing ring (14) and following reinforcing ring (15) is 9m.
6. according to the mounting method of claim 1 or 2 described deep well high pressure aeration reactor steel drums, it is characterized in that: described forcing pipe (4) is a galvanized pipe.
7. according to the mounting method of the described deep well high pressure aeration reactor steel drum of claim 3, it is characterized in that: the diameter of moisturizing hole (7) is 9-11cm described in the step (a); Valve described in the step (d) is can pressure-bearing 16Kg/cm
2Stainless valve (16); The lower end of stack (5) described in the step (d) flushes with the soffit of internal partition (1), and fixes, seals with internal partition (1) full weld, and internal partition (1) upper surface 0.8-1.2m is exposed in stack (5) upper end, and 2 valves and 1 plug are installed on it.
8. according to the mounting method of claim 1 or 2 described deep well high pressure aeration reactor steel drums, it is characterized in that: the in length and breadth stiffening girder (3) of the stiffening girder described in the step (d) for forming by i iron; Firmware described in the step (e) is connection wall bar (6).
9. according to the mounting method of claim 1 or 2 described deep well high pressure aeration reactor steel drums, it is characterized in that: when the temporary fixed installation described in the step (e) is numbered the steel drum section of M+1, adopt the bracket of a plurality of band supporting plates to carry out temporary fixed.
10. according to the mounting method of the described deep well high pressure aeration reactor steel drum of claim 3, it is characterized in that: the release described in the step (i), internal partition (1) cutting and recovery mainly may further comprise the steps:
Step 1: the water of internal partition (1) top in described whole steel drum (18) bucket is drained;
Step 2: open all valves on the forcing pipe (4), the hydraulic pressure in the forcing pipe (4) is unloaded be depressed into pressure-less state;
Step 3: extract the water of internal partition (1) below out the 18-20cm height, and remove forcing pipe (4), forcing press (12) and pressure meter (11);
Step 4: adopt the stiffening girder of cutting tool cutting internal partition (1) top and described steel drum (18) outside is sent in its lifting, the cutting part crator is carried out grinding process;
Step 5: left and right two and half parts that adopt cutting tool successively to cut internal partition (1), and it is lifted separately send described steel drum (18) outside, and the cutting part crator is carried out grinding process;
Step 6: in steel drum (18), add water to down 1.3-1.5m place under the reinforcing ring (15) by filling pipe two described in the step (f), adopt the following reinforcing ring (15) of cutting tool cutting and described steel drum (18) outside is sent in its lifting, the cutting part crator is carried out grinding process;
Step 7: in steel drum (18), add water to 1.3-1.5m place under the reinforcing ring (14) by filling pipe described in the step 6 two, the cutting of employing cutting tool is gone up reinforcing ring (14) and described steel drum (18) outside is sent in its lifting, and the cutting part crator is carried out grinding process;
Step 8: in steel drum (18), add water to apart from well head 0.4-0.6m;
Step 9: measure hole depth and aperture in the described steel drum (18), finish and inspect for acceptance.
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| CN2008101507018A CN101344004B (en) | 2008-08-22 | 2008-08-22 | Mounting method of deep well high pressure aeration reactor steel drum |
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| CN2008101507018A CN101344004B (en) | 2008-08-22 | 2008-08-22 | Mounting method of deep well high pressure aeration reactor steel drum |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935209A (en) * | 2017-10-26 | 2018-04-20 | 上海市政工程设计研究总院（集团）有限公司 | One kind aeration partial pressure control method |
| CN109681209A (en) * | 2019-02-26 | 2019-04-26 | 中铁十二局集团有限公司 | The construction method of inspection-pit supporting construction and inspection-pit supporting construction |
| CN112696554A (en) * | 2020-12-17 | 2021-04-23 | 中国二十冶集团有限公司 | Large-diameter pipeline pressure test plugging blind plate and construction method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4133472A (en) * | 1977-02-14 | 1979-01-09 | Maxwell Herris M | Method of shipping and assembling rectangular structural unit |
| CN2054075U (en) * | 1989-09-22 | 1990-03-07 | 孔凡震 | Prefabricated shaft lining |
| CN1013786B (en) * | 1989-09-22 | 1991-09-04 | 孔凡震 | Wall fabricated side-wall tube |
| CN2585977Y (en) * | 2002-12-02 | 2003-11-12 | 中国矿业大学 | Retractable well wall appts. |
| JP4057635B1 (en) * | 2006-09-13 | 2008-03-05 | 孝一 藤原 | Steel retaining pipe and retaining method |
| CN201078234Y (en) * | 2007-09-24 | 2008-06-25 | 李明 | Integral hydraulic pressure steel sheet piling curtain of vertical shaft construction overflowing sand bed |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935209A (en) * | 2017-10-26 | 2018-04-20 | 上海市政工程设计研究总院（集团）有限公司 | One kind aeration partial pressure control method |
| CN107935209B (en) * | 2017-10-26 | 2024-01-19 | 上海市政工程设计研究总院（集团）有限公司 | Aeration partial pressure control method |
| CN109681209A (en) * | 2019-02-26 | 2019-04-26 | 中铁十二局集团有限公司 | The construction method of inspection-pit supporting construction and inspection-pit supporting construction |
| CN112696554A (en) * | 2020-12-17 | 2021-04-23 | 中国二十冶集团有限公司 | Large-diameter pipeline pressure test plugging blind plate and construction method thereof |
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| CN101344004B (en) | 2010-10-06 |
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