CN104565531A - Method for processing frozen soil in pipeline repairing operation pit - Google Patents
Method for processing frozen soil in pipeline repairing operation pit Download PDFInfo
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- CN104565531A CN104565531A CN201410829849.XA CN201410829849A CN104565531A CN 104565531 A CN104565531 A CN 104565531A CN 201410829849 A CN201410829849 A CN 201410829849A CN 104565531 A CN104565531 A CN 104565531A
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- pipeline
- frozen soil
- stove
- soil
- tent
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/026—Laying or reclaiming pipes on land, e.g. above the ground in or on a frozen surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to the field of an oil-gas pipeline system, discloses a method for processing frozen soil in pipeline repairing operation pit, and aims to solve the technical problem that the heat utilization rate of a frozen soil burning and melting method in the prior art is low. The method comprises the steps of locating the position of a defect point welding seam of a pipeline; determining the center line of the pipeline, making a first mark on an intersection point of the center line and the defect point welding seam, and making second marks on the center line by taking the intersection point as the center at preset intervals; placing stoves at positions, which are spaced from the center line by a first preset distance, of two sides of the pipeline according to the first mark and the second marks; erecting a frozen soil burning and melting tent at the peripheries of the pipeline and the stoves; controlling the stoves to be in a working state so as to burn and melt the frozen soil. According to the method disclosed by the invention, the technical effect of increasing the heat utilization rate during frozen soil burning and melting is achieved.
Description
Technical field
The present invention relates to oil and gas pipes system regions, particularly relate to a kind of pipeline rehabilitation operating pit frozen soil processing method.
Background technique
China-Russia Crude Oil Pipeline is positioned at the Cold And Frozen-soil Regions of high latitudes, the feature such as have height above sea level, throughout the year low temperature, frozen soil is not changed throughout the year.Winter, the top layer frozen soil of Daxinganling District can reach 1.5 meters deeply, and be characterized in: the soil property freezed is very hard, its hardness is just as iron and steel.Conventional excavator operation on such soil can only leave more shallow cut.Excavation construction is very difficult.And China-Russia Crude Oil Pipeline exists certain defect, need trenchless rehabilitation.
According to the experience of domestic and international Frozen Ground Area excavation construction, at present conventional Mechanical Excavation of Frozen Soil mode have steam thaw method, blasting procedure, electric heating thaw method, warmly melt excavating load.
(1) steam thaws method
When can provide steam near building site, steam is sent in the hole got out in frozen soil in advance, the heat by means of steam melts frozen soil.
(2) blasting procedure
Blasting procedure permafrost region excavation is quincuncial arrangement with big gun hole, and as required, a hole on earth or layering explosion for the degree of depth.The stemming shutoff of big gun hole, shutoff length is greater than 30cm.
(3) electric heating thaws method
The method is heat energy by electric energy conversion, and frozen soil is melted, thus excavation frozen soil.Its method, for electrode is squeezed into frozen soil, is arranged at a certain distance, leans on the moisture bottom dark soil layer and water on ground to conduct electricity with brine after energising, is heat energy, thus frozen soil is melted by electric energy conversion.
(4) thawing local method is burnt
The method utilizes the fuel such as tent and timber, and will warm the melting in the frozen soil region of excavation be needed to become civilized, the molten soil of rear excavation, cycling, finally forms operating pit.
But steam thaws method excavation technology, equipment limitation is strong, and perdurabgility is relatively long, drops into comparatively large, but successful, workable.It is poor that Daxinganling District society relies on, and the operability utilizing steaming plant to excavate is not strong; Blasting procedure is a kind of most economical, practical and general Mechanical Excavation of Frozen Soil method, and construct in the wild, restricted condition is few, simple and efficient.But for the excavation of in-service pipeline, this mode danger is too large, can not adopt; Electric heating thaws method equipment limitation comparatively greatly, and spills to pipeline the corrosivity that salt can increase considerably pipeline soil in a large number, increases risk, is not suitable for in-service pipeline excavation.Burning thawing local method fuel draws materials conveniently, and dangerous little, speed of application is relatively slow, but with regard to currently available technology level, burns thawing local method and be best suited for the method that excavation construction repaired by unconcerned large line.
Traditional burning thawing local method timber or wood chip is deposited on operating pit to light, and clears up ashes, rear excavation after scorification one deck frozen soil.There is following defect in the method: 1, open burning timber or wood chip, and the heat utilization efficiency of fuel is low, there is naked light simultaneously and be blown to four winds and bring out the hidden danger of fire; 2, ashes process efficiency is cleared up very low.
Summary of the invention
The embodiment of the present invention provides a kind of pipeline rehabilitation operating pit frozen soil processing method, with the technical problem that the heat utilization solving burning thawing local method of the prior art is low.
The embodiment of the present invention provides a kind of pipeline rehabilitation operating pit frozen soil processing method, comprising:
Orient the defect point weld bond position of pipeline;
Determine the center line of described pipeline, and make the first mark and centered by described intersection point, make the second mark every predetermined interval on described center line on the intersection point of described center line and described defect point weld bond position;
According to described first mark and described second mark, described in described pipeline two lateral extent, stove is respectively placed by center line first predeterminable range place;
Set up at described pipeline and described stove periphery and burn thawing soil tent;
Control described stove in running order, to burn thawing soil.
Optionally, described burning thawing soil tent is specially: fire prevention tent.
Optionally, described stove manufactures in the following manner and forms:
At least two iron sheet oil drums are welded into the shaft of the described stove of cylindric formation;
The crossing that an opening forms described stove is opened on the surface of described shaft;
Sheet iron is rolled into the flue that cylinder makes described stove;
Namely the side described flue being welded in described shaft forms described stove.
Optionally, in running order at the described stove of described control, after burning thawing soil, described method also comprises:
After preset time period, the fire controlling described stove is in OFF state;
Described stove is shifted out outside described burning thawing soil tent;
Described frozen soil is also moved to warm native tent by excavation frozen soil.
Optionally, after moving to warm native tent at described excavation frozen soil and by described frozen soil, described method also comprises:
Again described first mark and described second mark is carried out;
Described stove is moved into described burning thawing soil tent;
Control described stove and be in described working state, to continue to burn thawing soil.
Optionally, described frozen soil is also moved to warm native tent by described excavation frozen soil, specifically comprises:
At position hand excavation groove of vertical described pipeline right side edge line, the degree of depth of described groove is the degree of depth of optical cable;
3rd mark is carried out to described optical cable region;
According to described 3rd mark, be greater than the region of the second predeterminable range in the distance apart from described optical cable, adopt the mode of machinery to excavate frozen soil;
Be not more than the region of described second predeterminable range in the distance apart from described optical cable, adopt artificial mode to excavate frozen soil.
Optionally, described frozen soil is also moved to warm native tent by described excavation frozen soil, specifically comprises:
Excavate out operating pit, described pipeline is positioned at described operating pit.
Optionally, described excavate out operating pit after, described method also comprises:
Judge whether there is underground water in described operating pit;
When there is described underground water in described operating pit, dig out at least one pump groove in described pipeline both sides, at least one pump slot described is in the region of described operating pit inner height lower than predetermined threshold value;
At least pump groove described in by pump water being pumped to.
Optionally, when there is described underground water in described operating pit, described method also comprises:
Pontoon is placed, to make operating personnel's operation in described pontoon in described operating pit.
Optionally, described excavate out operating pit after, described method also comprises:
Judge whether there is underground water in described operating pit;
When there is described underground water in described operating pit, in described operating pit, place pontoon, to make operating personnel's operation in described pontoon.
Beneficial effect of the present invention is as follows:
In embodiments of the present invention, provide a kind of pipeline rehabilitation operating pit frozen soil processing method, comprising: the defect point weld bond position of orienting pipeline; Determine the center line of pipeline, and make the first mark and centered by intersection point, make the second mark every predetermined interval on centerline on the intersection point of center line and defect point weld bond position; At distance center line first predeterminable range place, pipeline both sides, respectively place stove; Set up at pipeline and stove periphery and burn thawing soil tent; Control stove is in running order, to burn thawing soil.Also namely in embodiments of the present invention, the process of burning thawing soil is carried out by stove, due to stove environmental seal, so heat loss is comparatively slow, adds stove periphery and be erected with burning thawing soil tent, further can play heat insulation effect, thus reach the technique effect improving heat utilization efficiency, and owing to being carry out burning by stove to melt, so can not cause being blown to four winds, thus reduce disaster hidden-trouble; Further, directly ashes cleaning is carried out to stove, improve the efficiency of cleaning ashes.
Accompanying drawing explanation
Fig. 1 is the flow chart of pipeline rehabilitation operating pit frozen soil processing method in the embodiment of the present invention;
Fig. 2 is the schematic diagram of in embodiment of the present invention pipeline rehabilitation operating pit frozen soil processing method, the center line of pipeline being made to the first mark and the second mark;
Fig. 3 is the schematic diagram of each placement in distance center line 2m place, a pipeline both sides stove in embodiment of the present invention pipeline rehabilitation operating pit frozen soil processing method;
Fig. 4 is the structural drawing of stove in embodiment of the present invention pipeline rehabilitation operating pit frozen soil processing method;
Fig. 5 is the schematic diagram of the burning thawing soil tent set up in embodiment of the present invention pipeline rehabilitation operating pit frozen soil processing method;
Fig. 6 is the flow chart excavating frozen soil in embodiment of the present invention pipeline rehabilitation operating pit frozen soil processing method;
Fig. 7 is the flow chart continuing to burn thawing soil in embodiment of the present invention pipeline rehabilitation operating pit frozen soil processing method;
Fig. 8 is the flow chart excavating frozen soil in embodiment of the present invention pipeline rehabilitation operating pit frozen soil processing method according to the position in region in different ways;
Fig. 9 be in the embodiment of the present invention pipeline rehabilitation operating pit frozen soil processing method optical cable lay position view;
Figure 10 is the schematic diagram of groove when adopting artificial guttering determination optical cable position in embodiment of the present invention pipeline rehabilitation operating pit frozen soil processing method;
Figure 11 is the schematic diagram of operating pit in embodiment of the present invention pipeline rehabilitation operating pit frozen soil processing method;
Figure 12 is the schematic diagram of the passway for escaping in embodiment of the present invention pipeline rehabilitation operating pit frozen soil processing method in operating pit;
Figure 13 is the flow chart being controlled underground water in embodiment of the present invention pipeline rehabilitation operating pit frozen soil processing method by pump channel process;
Figure 14 is the position view by pump groove during pump channel process control underground water in embodiment of the present invention pipeline rehabilitation operating pit frozen soil processing method;
Figure 15 is the structural drawing of pontoon in embodiment of the present invention pipeline rehabilitation operating pit frozen soil processing method.
Embodiment
The embodiment of the present invention provides a kind of pipeline rehabilitation operating pit frozen soil processing method, with the technical problem that the heat utilization solving burning thawing local method of the prior art is low.
Technological scheme in the embodiment of the present application is solve above-mentioned technical problem, and general thought is as follows:
Provide a kind of pipeline rehabilitation operating pit frozen soil processing method, comprising: the defect point weld bond position of orienting pipeline; Determine the center line of pipeline, and make the first mark and centered by intersection point, make the second mark every predetermined interval on centerline on the intersection point of center line and defect point weld bond position; At distance center line first predeterminable range place, pipeline both sides, respectively place stove; Set up at pipeline and stove periphery and burn thawing soil tent; Control stove is in running order, to burn thawing soil.Also namely in embodiments of the present invention, the process of burning thawing soil is carried out by stove, due to stove environmental seal, so heat loss is comparatively slow, adds stove periphery and be erected with burning thawing soil tent, further can play heat insulation effect, thus reach the technique effect improving heat utilization efficiency, and owing to being carry out burning by stove to melt, so can not cause being blown to four winds, thus reduce disaster hidden-trouble; Further, directly ashes cleaning is carried out to stove, improve the efficiency of cleaning ashes.
In order to better understand technique scheme, below by accompanying drawing and specific embodiment, technical solution of the present invention is described in detail, the specific features being to be understood that in the embodiment of the present invention and embodiment is the detailed description to technical solution of the present invention, instead of the restriction to technical solution of the present invention, when not conflicting, the technical characteristics in the embodiment of the present invention and embodiment can combine mutually.
The embodiment of the present invention provides a kind of pipeline rehabilitation operating pit frozen soil processing method, please refer to Fig. 1, comprising:
Step S101: the defect point weld bond position of orienting pipeline;
Step S102: the center line determining pipeline, and make the first mark and centered by intersection point, make the second mark every predetermined interval on centerline on the intersection point of center line and defect point weld bond position;
Step S103: according to the first mark and described second mark, stove is respectively placed by distance center line first predeterminable range place in pipeline both sides;
Step S104: set up at pipeline and stove periphery and burn thawing soil tent;
Step S105: control stove in running order, to burn thawing soil.
In specific implementation process, can carry out some preparatory works before processing frozen soil, preparatory work comprises:
1, conventional preparation
Get out 1 16.0m × 10.0m × 2.0m to prevent fires cotton-padded tent, 2 3.0m × 3.0m heat-preservation cotton tents, the waste and old iron sheet oil drum of 8 200l, the sheet iron of 4 pieces of 0.8m × 3.0m × 0.05m, some thin wood poles, 84m
3firewood; 1 excavator, 1 pipe detector, 1 GPS; Commanding 1 people, locating personnel 1 people, power work 10 people, firer 6 people, forest-fire prevention personnel (being sent by forest farm) 6 people; Powder-type fire extinguisher 8, wind-force extinguisher 6, No. 2 fire suppression instrument promises are done.Need before operation to obtain construction unit's construction permits and forest department's construction permits.
2, special preparation
Operating pit has the situation of lower water, drift sand, 100kw generator set 1 must be prepared, 1,25 tons of cranes, four cun of 2, water pumps (according to the adjustment of underground water size), two cun of 2, water pumps (according to the adjustment of underground water size), pontoon 1,8mm is thick, 1.0m × 1.1375m steel plate 64 pieces (adjusting as the case may be), and 8mm is thick, 1.0m × 1.0m steel plate 32 pieces (adjusting as the case may be), Φ 89mm × 7mm × 4.2m steel pipe 54; Operator 2 people, electrician 1 people.
In step S101, fixed point personnel can orient the defect point weld bond position of pipeline by GPS orientation type.
In step S102, can be determined the center line of pipeline by pipe detector, as shown in Figure 2, the center line of pipeline refers to the center line of long axis direction in the plan view of pipeline.In order to distinguish the defect point weld bond position of pipeline, under normal circumstances, first mark is different with the second mark, first mark is such as: thin wood pole label, second mark is such as: the red rope on thin wood pole label and thin wood pole label, and predetermined interval can arrange different intervals according to actual needs, such as: 0.5m, 0.7m, 1m etc., this embodiment of the present invention is no longer itemized, and is not restricted.
Under normal circumstances, the object of excavation frozen soil is to repair the defect point weld bond of pipeline, so can be indicated defect point weld bond and pipeline position by the first label and the second label, and then can process the frozen soil near defect point weld bond.
In step S103, can be according to the actual requirements, the first different predeterminable ranges is set, first predeterminable range is such as: 2m, 2.5m, 3m etc., the embodiment of the present invention no longer itemizes, and is not restricted, in addition, first predeterminable range place can prevent one or more stove, and the embodiment of the present invention is not restricted.As shown in Figure 3, be the schematic diagram of each placement in distance center line 2m place, a pipeline both sides stove.
In specific implementation process, stove can manufacture in the following manner and form:
At least two iron sheet oil drums being welded into the shaft of cylindric formation stove, as shown in Figure 4, is the structural drawing of stove.Wherein, be welded into the schematic diagram of stove shaft 41 by two iron curtain oil drums, not isometric iron sheet oil drum can be adopted according to actual needs to be welded into shaft 41, and the volume of iron sheet oil drum is such as: 200l;
Open the fire door 42 that an opening forms stove on the surface of shaft 41, can offer the fire door 42 of different size according to actual needs, the diameter of fire door 42 is such as: 30cm, 40cm etc.;
Sheet iron is rolled into the flue 43 that cylinder makes stove, the specification of sheet iron is such as: 0.8m × 3.0m × 0.05m, the diameter of flue 43 is such as: 0.2m, can certainly be according to the actual requirements, the diameter of flue is set to other size, the embodiment of the present invention no longer itemizes, and is not restricted.
Namely the side that flue 43 is welded in shaft 41 is formed stove.
In specific implementation process, by such scheme except manufacturing the stove for burning thawing soil, all right manufacturer heating stove and warm native tent stove, such as: manufacture 2 of the stove for burning thawing soil, 1, personnel's heating stove and warm 1, native tent stove totally 4 stoves, but can manufacture the stove of varying number according to the actual requirements, the embodiment of the present invention is not restricted.
Further, stove bottom surface can be beaten out whole, be convenient to stand up stable.
In step S104, in order to ensure safety, burning thawing soil tent and can adopt fire prevention tent, burning thawing soil tent size is such as: 16.0m × 10.0m × 2.0m, in addition burning the hole of thawing soil tent ceiling being buckled system two 20cm, so that the flue 43 of two stoves can stretch out outside tent.Certainly, in specific implementation process, burning thawing soil tent can also be other size, and the embodiment of the present invention no longer itemizes, and is not restricted.As shown in Figure 5, the schematic diagram of the native tent of the burning thawing for setting up.
In addition, after burning thawing soil tent, just can set up workman's tent on duty and warm native tent, set up near burning thawing soil tent.
In step S105,6 firer 2 people one group, one group of work 8 hours, point to work in three shifts and burn thawing soil, each stove consumes 3m in every 24 hours
3firewood, timber can select white birch wood and Eastern larch, and in order to safety, stowed location melts the distance of more than tent 5m away from burning.
As further preferred embodiment, in running order at control stove, after burning thawing soil, please refer to Fig. 6, method also comprises:
Step S601: after preset time period, the fire controlling stove is in OFF state;
Step S602: stove is shifted out and burns outside thawing soil tent;
Step S603: frozen soil is also moved to warm native tent by excavation frozen soil.
In step S601, preset time period is such as: 24h, certainly, can arrange different preset time period according to the actual requirements, such as: 20h, 28h etc., no longer itemize, and be not restricted this embodiment of the present invention.
In step S602, because follow-up needs excavates frozen soil, so in order to prevent stove from blocking frozen soil region, burning outside thawing soil tent so stove is shifted out, in addition, the first mark and the second mark also can also be shifted out and burning outside thawing soil tent.
In step S603, guarantee without after potential safety hazard, power work just can burn the frozen soil that melt with spade and pick excavation, the earthwork by labor cleaning go out to burn thawing soil tent outer after, with excavator the earthwork moved and puts to warm native tent until backfill.
As further preferred embodiment, please refer to Fig. 7, after excavating frozen soil and frozen soil is moved to warm native tent, method also comprises:
Step S701: again carry out the first mark and the second mark;
Step S702: stove is moved into and burns thawing soil tent;
Step S703: control stove in running order, to continue to burn thawing soil.
Due under normal circumstances, thickness of frozen earth layer is thicker, may not burn and melt all frozen soil, in this case, then can continue step S701 ~ step S703 so disposable, and then again burns thawing soil.
Under normal circumstances, circulation in a day, can excavate 0.3m-0.5m in general one day, for Daxing'an Mountainrange frozen soil layer, and its average thickness 1.5m-2.0m, therefore 5-7 days just can excavate frozen soil layer complete.
In addition, if when excavation is below frozen soil layer, then can removes and burn thawing soil tent, excavation frozen soil is carried out due to machinery type can be adopted under normal circumstances, so a few hours can dig, the so short time can not cause soil secondary to freeze reality, therefore can remove and burn thawing soil tent.
As further preferred embodiment, in step S105, frozen soil is also moved to warm native tent by excavation frozen soil, please refer to Fig. 8, specifically comprises:
Step S801: at position hand excavation groove of vertical pipe right side edge line, the degree of depth of groove is the degree of depth of optical cable;
Step S802: the 3rd mark is carried out to optical cable region;
Step S803: according to the 3rd mark, is greater than the region of the second predeterminable range in the distance of distance optical cable, adopt the mode of machinery to excavate frozen soil;
Step S804: the region being not more than the second predeterminable range in the distance of distance optical cable, adopts artificial mode to excavate frozen soil.
In step S801, because Near Pipelines can be laid with optical cable usually, so in this case, in order to prevent excavation from causing damage to optical cable, then first need to determine optical cable position.The companion's row communication cable normally laid on the right side of pipeline oil flow path direction on 45° angle away from the position of pipeline 0.3m, as shown in Figure 9, many times laying of optical cable can present erratic behavior, this causes very large trouble to mechanical equivalent of light excavation, owing to there is no suitable searching instrument, therefore optical cable can be found by artificial guttering.
This groove offer position such as shown in Figure 10, the width of this groove 100 is such as: 0.2m, and length is such as: 2.0m, and can certainly offer the groove of other size according to the actual requirements, the embodiment of the present invention no longer itemizes, and is not restricted.
In step S802, the 3rd mark can be the mark of arbitrary form, such as: identical with the first mark or the second mark etc.
In addition, because the fluctuating up and down of optical cable is very large, after excavating one section, during as can not determine that optical cable moves towards, can be found by artificial guttering again.
In step S803, the second predeterminable range is such as: 0.3m, 0.4m etc., can arrange the second different predeterminable ranges according to the actual requirements, not be restricted this embodiment of the present invention.
Because the distance of corresponding region distance optical cable is greater than the second predeterminable range, so can not optical cable be damaged when excavating, in this case, in order to improve excavation efficiency, so adopt the excavation frozen soil of the mode of machinery.
In step S804, because the distance of corresponding region distance optical cable is not more than the second predeterminable range, so in order to prevent mechanical equivalent of light excavation mode from damaging optical cable, therefore adopt artificial mode to excavate frozen soil.
By such scheme, reach while guarantee does not damage optical cable, improve the technique effect of the efficiency of excavation frozen soil.
As further preferred embodiment, excavate frozen soil in step S105 and frozen soil moved to warm native tent, specifically comprising:
Excavate out operating pit, pipeline is positioned at operating pit.
Namely by excavation frozen soil, and then excavate out operating pit at pipeline, so the maintenance of pipeline can be realized at operating pit.
Under normal circumstances, in order to the safety of operation and the convenience of operation, select the slope ratio of 0.5, bottom size 4.0m X 10.0m, conveniently welds, liftoff about 0.5m at the bottom of pipe, as shown in figure 11, is the schematic diagram of an operating pit.Establish two-way passway for escaping at operating pit, width is 1.5m, and the gradient is 20 °, dig out step-like after, each step can the packed sandy soil of stacking 2-4 bag, as shown in figure 12, are a passway for escaping schematic diagram.
In addition, after operating pit is shaping, the cotton felt of exposed pipeline is wrapped, again set up and burn thawing soil tent, stove on frame, suitably makes a fire, and keeps temperature in operating pit, until operation completes.
In specific implementation process, after operating pit excavation, many times have underground water in operating pit, because underground water is endlessly, so can, when operation, adopt pump channel process to control underground water, and then as further preferred embodiment, after excavating out operating pit, please refer to Figure 13, method also comprises:
Step S1301: judge whether there is underground water in operating pit;
Step S1302: when there is underground water in operating pit, digs out at least one pump groove in pipeline both sides, at least one pump slot is in the region of operating pit inner height lower than predetermined threshold value; As shown in figure 14, for the schematic diagram of pump groove, under normal circumstances, highly refer to the height relative to operating pit lowest part, predetermined threshold value is relevant with the height of operating pit, predetermined threshold value is the smaller the better, such as: be highly 0, in this case, pump slot is in the minimum position of operating pit, the size of pump groove is such as: 1.0m Χ 1.0m Χ 0.5m, certainly, in specific implementation process, the different size of pump groove also can be determined according to the actual requirements, the embodiment of the present invention no longer itemizes, and is not restricted.
Step S1303: water is pumped at least pump groove by pump.Because pump groove has low-lying advantage, therefore flow direction pump groove, select quantity and the size of pump according to the size of current, generally, put four cun of water pumps in a pump groove just.After controlling underground water, just can normal operation after dry and comfortable for place mat at the bottom of pipe.
By the above-mentioned ponding that can reduce operating pit as far as possible, and then can ensure that operating personnel normally works in operating pit.
Underground water under frozen soil layer, generally, can be controlled by pump channel process, as setting is near river and marshland, groundwater resources enrich, uncontrollable by water pump, at this moment just available pontoon method, and then as further preferred embodiment, when there is underground water in operating pit, method also comprises:
Pontoon is placed, to make operating personnel's operation in pontoon in operating pit.
First make the pontoon that a specification is 4.0m × 2.0m × 0.5m, adopt 6mm Plate Welding to be made, weld adopts full weld without exception, as shown in figure 15, is the schematic diagram of a pontoon, and certain pontoon can be also Else Rule, and the embodiment of the present invention is not restricted.The pontoon made is pushed below pipeline with excavator in the horizontal direction, suitably increases water pump quantity, normal precipitation in the outer pump groove of pontoon, thus ensure operating personnel's normal operation in pontoon.The effect of pontoon is when the uncontrollable current of water pump, for operating personnel plays the effect of an exclusion of water and mud.
As another preferred embodiment, after excavating out operating pit, method also comprises:
Judge whether there is underground water in operating pit;
When there is underground water in operating pit, in operating pit, place pontoon, to make operating personnel's operation in pontoon.
Specifically, when namely there is underground water in operating pit, directly allow operating personnel's operation in pontoon, and do not consider whether underground water is got rid of in operating pit.
The one or more embodiment of the present invention, at least has following beneficial effect:
Due in embodiments of the present invention, provide a kind of pipeline rehabilitation operating pit frozen soil processing method, comprising: the defect point weld bond position of orienting pipeline; Determine the center line of pipeline, and make the first mark and centered by intersection point, make the second mark every predetermined interval on centerline on the intersection point of center line and defect point weld bond position; At distance center line first predeterminable range place, pipeline both sides, respectively place stove; Set up at pipeline and stove periphery and burn thawing soil tent; Control stove is in running order, to burn thawing soil.Also namely in embodiments of the present invention, the process of burning thawing soil is carried out by stove, due to stove environmental seal, so heat loss is comparatively slow, adds stove periphery and be erected with burning thawing soil tent, further can play heat insulation effect, thus reach the technique effect improving heat utilization efficiency, and owing to being carry out burning by stove to melt, so can not cause being blown to four winds, thus reduce disaster hidden-trouble; Further, directly ashes cleaning is carried out to stove, improve the efficiency of cleaning ashes.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a pipeline rehabilitation operating pit frozen soil processing method, is characterized in that, comprising:
Orient the defect point weld bond position of pipeline;
Determine the center line of described pipeline, and make the first mark and centered by described intersection point, make the second mark every predetermined interval on described center line on the intersection point of described center line and described defect point weld bond position;
According to described first mark and described second mark, described in described pipeline two lateral extent, stove is respectively placed by center line first predeterminable range place;
Set up at described pipeline and described stove periphery and burn thawing soil tent;
Control described stove in running order, to burn thawing soil.
2. the method for claim 1, is characterized in that, described burning thawing soil tent is specially: fire prevention tent.
3. the method for claim 1, is characterized in that, described stove manufactures in the following manner and forms:
At least two iron sheet oil drums are welded into the shaft of the described stove of cylindric formation;
The crossing that an opening forms described stove is opened on the surface of described shaft;
Sheet iron is rolled into the flue that cylinder makes described stove;
Namely the side described flue being welded in described shaft forms described stove.
4. the method for claim 1, is characterized in that, in running order at the described stove of described control, and after burning thawing soil, described method also comprises:
After preset time period, the fire controlling described stove is in OFF state;
Described stove is shifted out outside described burning thawing soil tent;
Described frozen soil is also moved to warm native tent by excavation frozen soil.
5. method as claimed in claim 4, it is characterized in that, after moving to warm native tent at described excavation frozen soil and by described frozen soil, described method also comprises:
Again described first mark and described second mark is carried out;
Described stove is moved into described burning thawing soil tent;
Control described stove and be in described working state, to continue to burn thawing soil.
6. method as claimed in claim 4, it is characterized in that, described frozen soil is also moved to warm native tent by described excavation frozen soil, specifically comprises:
At position hand excavation groove of vertical described pipeline right side edge line, the degree of depth of described groove is the degree of depth of optical cable;
3rd mark is carried out to described optical cable region;
According to described 3rd mark, be greater than the region of the second predeterminable range in the distance apart from described optical cable, adopt the mode of machinery to excavate frozen soil;
Be not more than the region of described second predeterminable range in the distance apart from described optical cable, adopt artificial mode to excavate frozen soil.
7. method as claimed in claim 4, it is characterized in that, described frozen soil is also moved to warm native tent by described excavation frozen soil, specifically comprises:
Excavate out operating pit, described pipeline is positioned at described operating pit.
8. method as claimed in claim 7, is characterized in that, described excavate out operating pit after, described method also comprises:
Judge whether there is underground water in described operating pit;
When there is described underground water in described operating pit, dig out at least one pump groove in described pipeline both sides, at least one pump slot described is in the region of described operating pit inner height lower than predetermined threshold value;
At least pump groove described in by pump water being pumped to.
9. method as claimed in claim 8, it is characterized in that, when there is described underground water in described operating pit, described method also comprises:
Pontoon is placed, to make operating personnel's operation in described pontoon in described operating pit.
10. method as claimed in claim 7, is characterized in that, described excavate out operating pit after, described method also comprises:
Judge whether there is underground water in described operating pit;
When there is described underground water in described operating pit, in described operating pit, place pontoon, to make operating personnel's operation in described pontoon.
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| CN201410829849.XA CN104565531B (en) | 2014-12-26 | 2014-12-26 | A kind of pipeline rehabilitation operating pit frozen soil processing method |
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| CN201410829849.XA CN104565531B (en) | 2014-12-26 | 2014-12-26 | A kind of pipeline rehabilitation operating pit frozen soil processing method |
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| CN109268621A (en) * | 2018-11-16 | 2019-01-25 | 合肥工业大学 | Detecting robot of pipe, pipe detection system based on electro-active material driving |
| CN109812227A (en) * | 2019-03-02 | 2019-05-28 | 山东振东环保科技有限公司 | A kind of frozen soil machine for placing |
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| CN101709577A (en) * | 2009-10-23 | 2010-05-19 | 中煤第七十二工程处 | Quick-thawing method of frozen soil foundation |
| CN102322276A (en) * | 2011-09-23 | 2012-01-18 | 厦门市路桥咨询监理有限公司 | Tunneling engineering freeze-proofing structure in seasonally frozen ground region |
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| CN101709577A (en) * | 2009-10-23 | 2010-05-19 | 中煤第七十二工程处 | Quick-thawing method of frozen soil foundation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109812227A (en) * | 2019-03-02 | 2019-05-28 | 山东振东环保科技有限公司 | A kind of frozen soil machine for placing |
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| CN104565531B (en) | 2018-01-02 |
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