CN102182198A - Drainage laying method of pulp pipeline in seasonal wetland swamp region - Google Patents

Drainage laying method of pulp pipeline in seasonal wetland swamp region Download PDF

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Publication number
CN102182198A
CN102182198A CN 201110090901 CN201110090901A CN102182198A CN 102182198 A CN102182198 A CN 102182198A CN 201110090901 CN201110090901 CN 201110090901 CN 201110090901 A CN201110090901 A CN 201110090901A CN 102182198 A CN102182198 A CN 102182198A
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China
Prior art keywords
gutter
laying
pipe
drainage
ditch
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CN 201110090901
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CN102182198B (en
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董荔苇
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China 19th Metallurgical Corp
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China 19th Metallurgical Corp
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Abstract

The invention discloses a drainage laying method of pulp pipeline in a seasonal wetland swamp region, which can quickly improve the earth bearing capacity of an operation area in the seasonal wetland swamp region to meet the construction requirements and can reduce environmental pollution at the same time. The method comprises the following steps: after determining the operation elevation of a pipe ditch and the position of the bottom surface of the pipe ditch, ditching a drainage ditch at the low-lying side of the pipe ditch, wherein the elevation of the drainage ditch is lower than the bottom surface of the pipe ditch; arranging a sump at the low-lying end of the drainage ditch; pumping water out of the sump to other places; after the earth bearing capacity of the operation area meets the construction conditions, starting pipeline laying; when the ground water level is higher than the operation elevation of the pipe ditch, laying a drainage pipe in the drainage ditch; placing the drainage pipe in the drainage ditch and backfilling immediately after the drainage ditch is formed; and arranging drainage holes on the drainage pipe at intervals. The method quickly improves the earth bearing capacity by reasonably adopting a drainage structure, can shorten the construction period, has little influence on environment, and is favorable for recovery of earth surface and vegetation; moreover, the construction process is simple and easy to implement, and the construction cost can be effectively reduced.

Description

Ore slurry pipeline is at the precipitation laying method in location, seasonal wetland marsh
Technical field
The present invention relates to a kind of laying method of ore slurry pipeline, especially a kind of ore slurry pipeline is at the precipitation laying method in location, seasonal wetland marsh.
Background technology
For the cable laying operation of pipeline in location, seasonal wetland marsh, domestic finding bibliographical information all is the job practicess that adopt the cofferdam draining and the sclerosis face of land, promptly divide section to carry out the cofferdam draining, after treating that water drains, spill lime and cement again on the face of land, after treating that face of land earth bearing strength reaches the requirement of heavy construction machine-walking, carry out the pipeline laying construction again.Do not require or meet to rain if earth bearing strength reaches, will repeat above-mentioned operation.This defects of construction is: the first, and lime and cement can make face of land alkalization, with the pollution in wide area environment, and vegetation destruction; The second, construction speed is slow, length consuming time, and cost is big, influenced greatly by the rainy day.
At present domesticly do not see that as yet diameter is at the report of the above heavy caliber ore slurry pipeline of 600mm at the laying method in location, seasonal wetland marsh.
Summary of the invention
The deficiency big to ambient influnence when being used for location, seasonal wetland marsh for the precipitation laying method that overcomes existing pipeline, technical problem to be solved by this invention provide a kind of can be apace the operation area earth bearing strength in location, seasonal wetland marsh being risen to and satisfy construction requirement and reduce the precipitation laying method of the ore slurry pipeline of environment pollution in location, seasonal wetland marsh simultaneously.
The technical solution adopted for the present invention to solve the technical problems is: ore slurry pipeline is at the precipitation laying method in location, seasonal wetland marsh, may further comprise the steps: determine the operation absolute altitude of pipe trench and the position of pipe trench bottom surface, in the pipe trench both sides, select the low-lying side ditch that begins to rehearse, the absolute altitude in gutter is lower than the pipe trench bottom surface, a low-lying end in gutter is provided with sump, the water pump drainage that collects in the sump is located to it, treat that the operation area earth bearing strength reaches execution conditions after, the beginning pipeline laying.
When groundwater table is higher than the operation absolute altitude of pipe trench, in the gutter, lay gutter, and after the gutter forms, immediately gutter is put into gutter and backfill, the spaced apart drain hole that is provided with on the gutter.
Its vertical every interval preseting length of described gutter upper edge bores a circle drain hole, and each circle drain hole has at least three, in the radial distribution of gutter.
Described gutter adopts periphery to be coated with the pvc pipe of gauze wire cloth, adopts bondingly between the pvc pipe, and drain hole is not established in the junction between the pvc pipe.
The mesh diameter of described gauze wire cloth is 5mm or littler.
Described gutter diameter is 200mm, and the drain hole diameter is 10mm.
The absolute altitude in described gutter is 500mm under the operation absolute altitude of pipe trench.
Described gutter has the gradient more than 1%.
The invention has the beneficial effects as follows: consider the mbuga location, the operation area earth bearing strength mainly depends on the drying sclerosis on the face of land, the present invention is according to the actual conditions of operation area groundwater table, reasonably adopt the precipitation structure, can very fast raising face of land earth bearing strength, and be not subjected to the influence on rainy day, thereby can shorten construction period, compare with existing method, littler to the influence of environment, more help the recovery of the face of land and vegetation, and construction technology is simple, construction speed is fast, can effectively reduce construction cost, especially is suitable for heavy caliber length laying apart from ore slurry pipeline.
Description of drawings
Fig. 1 is the schematic diagram of the precipitation structure in the inventive method.
Fig. 2 is another schematic diagram of the precipitation structure in the inventive method.
Fig. 3 is the another schematic diagram of the precipitation structure in the inventive method.
Be labeled as the operation absolute altitude of 1-pipe trench, 2-groundwater table, 3-gutter, 4-sump, 5-pump, 6-gutter, 7-drain hole, 8-gauze wire cloth, 9-packed layer, the 10-face of land, 11-pipe trench bottom surface, 12-packed layer surface, the absolute altitude in 13-gutter among the figure.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
As Fig. 1, Fig. 2, shown in Figure 3, ore slurry pipeline of the present invention is at the precipitation laying method in location, seasonal wetland marsh, may further comprise the steps: determine the operation absolute altitude 1 of pipe trench and the position of pipe trench bottom surface 11, in the pipe trench both sides, select the low-lying side ditch 3 that begins to rehearse, the absolute altitude 13 in gutter is lower than pipe trench bottom surface 11, and a low-lying end in gutter 3 is provided with sump 4, and the water pump drainage that collects in the sump 4 is located to it, after treating that the operation area earth bearing strength reaches execution conditions, the beginning pipeline laying.In the operation area, underground water can conflux and discharges by gutter 3, the face of land is air dry promptly, thereby can be apace the operation area earth bearing strength in location, seasonal wetland marsh be risen to and satisfy construction requirement, simultaneously, use lime and cement in large area because reduced, reduced environment pollution, help the recovery of the face of land and vegetation.The inventive method does not need the cofferdam draining, is particularly suitable for long laying apart from ore slurry pipeline.
Carry out pipeline laying for accelerating the duration, preferably be chosen in to enter location, seasonal wetland marsh dry season.
As Fig. 1, Fig. 2 and shown in Figure 3, the ponding in the pump drainage sump 4 generally adopts pump and water pipe, and the water that pumps can be discharged into natural retaining points such as lake nearer from the operation area or pool.
Certainly, said method is suitable for the more shallow situation of groundwater table 2, that is groundwater table 2 is lower than the situation of the operation absolute altitude 1 of pipe trench.
When groundwater table 2 is dark, that is groundwater table 2 is when being higher than the operation absolute altitude 1 of pipe trench, need in gutter 3, lay gutter 6, and after gutter 3 forms, should immediately gutter 6 be put into gutter 3 and backfill, prevent to float pipe, the spaced apart drain hole 7 that is provided with on the gutter 6, the tube wall of gutter 6 has intercepted mud, be difficult for forming alluvial in the gutter 3, when groundwater table 2 is dark, also can reduce the operation area groundwater table effectively, reach the effect of rapid precipitation.
As shown in Figures 2 and 3, its vertical every interval preseting length of described gutter 6 upper edges bores a circle drain hole 7, and each circle drain hole 7 has at least three, in the radial distribution of gutter 6, guarantees that the absolute altitude in the gutter has at least one drain hole 7 below 13.Said " preseting length " generally according to the plentiful degree decision of groundwater run off, the water yield is big more, and " preseting length " is short relatively more, should " preseting length " be 100mm usually.
As shown in Figures 2 and 3, described gutter 6 adopts periphery to be coated with the pvc pipe of gauze wire cloth 8, adopt bonding between the pvc pipe, drain hole 7 is not established in junction between the pvc pipe, to guarantee bonding strength, gauze wire cloth 8 can increase the intensity of gutter 6, guarantee between the precipitation operational period in pvc pipe do not damage, drain hole 7 does not stop up.
For making gauze wire cloth 8 also can play certain anti-silt effect, guarantee the precipitation usefulness in gutter 3, the mesh diameter of described gauze wire cloth 8 is 5mm or littler.
The diameter of gutter 6 and drain hole 7 is the same with aforesaid " preseting length ", also to decide according to the precipitation needs, according to the water yield of common mbuga, generally selecting diameter is 200mm, and drain hole 7 diameters are that the gutter 6 of 10mm just can satisfy the precipitation requirement.
The absolute altitude 13 in gutter is the same with aforesaid " preseting length ", also will decide according to the precipitation needs, according to the water yield of common mbuga, generally selects the absolute altitude 13 in gutter to be 1 time 500mm of operation absolute altitude of pipe trench.
Rise to when satisfying construction requirement at the operation area earth bearing strength, if during the pipe trench base foundation incompatibility pipeline that discovery local excavation goes out, the pipe trench of can backbreaking, this moment, the operation absolute altitude 1 of pipe trench was the following 200mm of pipeline designs absolute altitude or darker, in this case, need on pipe trench bottom surface 11, be equipped with packed layer 9, be to guarantee dewatering effect, perpendicular to pipe trench longitudinally on the direction, packed layer surface 12 should have gradient, natch, should be lower near the height of gutter 3 one sides.
For obtaining better dewatering effect, described gutter 3 preferably has the gradient more than 1%.
Embodiment:
Plan is laid the ore slurry pipeline that diameter is 600mm in certain mbuga area.The design elevation of ore pulp pipeline is the following 1.7m in the face of land, and investigation discovery groundwater table is following 1m on the face of land, adopts method of the present invention capable again cable laying operation behind precipitation.
Need dig at distance pipeline axis 2m place one bury underground diameter be the pipe trench of pvc pipe of 200mm as the gutter, its absolute altitude is at following 500mm place, ore pulp pipe spool ditch bottom surface.On the pvc pipe in 360 ° of scopes along the drain hole of the vertical every interval 100mm drill diameter 10mm of pipe, having bored and twine mesh behind the hole outside pvc pipe is that the finer wire net of 5mm is made gutter; Attention pvc pipe periphery must not be leaked everywhere and be twined, and the connected mode of pvc pipe is bonding, and drain hole is not bored in the junction, and ready-made gutter is placed on the draining limes marginis that is about to excavation.Can be with light-duty little excavator during drainage trenching, because this excavator is very low to the requirement of earth bearing strength, the ditching direction should be from the drainage point, 1% slope is put in the gutter towards drainage direction, the gutter is once formation promptly rapidly with off-the-shelf pvc pipe hyposulculus, guarantees drainage grade, prevent to float pipe and backfill, check the water outlet situation of pvc pipe simultaneously.
Above-mentioned precipitation structure was successfully brought up to the earth bearing strength in mbuga location the cable laying operation condition that is suitable for large diameter pipeline in 7 days.

Claims (8)

1. ore slurry pipeline is at the precipitation laying method in location, seasonal wetland marsh, may further comprise the steps: determine the operation absolute altitude (1) of pipe trench and the position of pipe trench bottom surface (11), in the pipe trench both sides, select the low-lying side ditch (3) that begins to rehearse, the absolute altitude in gutter (13) is lower than pipe trench bottom surface (11), a low-lying end in gutter (3) is provided with sump (4), the water pump drainage that will collect in the sump (4) is located to it, treat that the operation area earth bearing strength reaches execution conditions after, the beginning pipeline laying.
2. ore slurry pipeline as claimed in claim 1 is at the precipitation laying method in location, seasonal wetland marsh, it is characterized in that: when groundwater table (2) is higher than the operation absolute altitude (1) of pipe trench, in gutter (3), lay gutter (6), and immediately gutter (6) is put into gutter (3) and backfill after gutter (3) form, gutter (6) is gone up the spaced apart drain hole (7) that is provided with.
3. ore slurry pipeline as claimed in claim 2 is at the precipitation laying method in location, seasonal wetland marsh, it is characterized in that: its vertical every interval preseting length of described gutter (6) upper edge bores a circle drain hole (7), each circle drain hole (7) has at least three, the radial distribution in gutter (6).
4. ore slurry pipeline as claimed in claim 3 is at the precipitation laying method in location, seasonal wetland marsh, it is characterized in that: described gutter (6) adopts periphery to be coated with the pvc pipe of gauze wire cloth (8), adopt bondingly between the pvc pipe, drain hole (7) is not established in the junction between the pvc pipe.
5. ore slurry pipeline as claimed in claim 4 is characterized in that at the precipitation laying method in location, seasonal wetland marsh: the mesh diameter of described gauze wire cloth (8) is 5mm or littler.
6. as claim 3, the 4 or 5 described ore slurry pipelines precipitation laying method in location, seasonal wetland marsh, it is characterized in that: described gutter (6) diameter is 200mm, and drain hole (7) diameter is 10mm.
7. it is characterized in that at the precipitation laying method in location, seasonal wetland marsh as any described ore slurry pipeline of claim in the claim 1~5: the absolute altitude in described gutter (13) is 500mm under the operation absolute altitude (1) of pipe trench.
8. as any described ore slurry pipeline of claim is at the precipitation laying method in location, seasonal wetland marsh in the claim 1~5, it is characterized in that: described gutter (3) have the gradient more than 1%.
CN2011100909010A 2011-04-12 2011-04-12 Drainage laying method of pulp pipeline in seasonal wetland swamp region Active CN102182198B (en)

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Application Number Priority Date Filing Date Title
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CN102182198B CN102182198B (en) 2012-07-04

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106381880A (en) * 2016-08-31 2017-02-08 中国水利水电第五工程局有限公司 Treatment method of peat soil dam foundation
CN106869152A (en) * 2017-03-31 2017-06-20 中国水利水电第十工程局有限公司 A kind of phreatic high chiltern canal slope is changed and is filled out from row's drainage system construction method
CN109235911A (en) * 2018-09-04 2019-01-18 中国三冶集团有限公司 A kind of water-saving depositing dust construction method of construction site

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020035216A (en) * 2000-11-04 2002-05-11 최한순 Structure method for drainageway of weak stratum and the conduct pipe thereof
CN101250879A (en) * 2008-04-01 2008-08-27 中国第一冶金建设有限责任公司 Method for processing bottom solum trickleing water of deep building pit
CN201125391Y (en) * 2007-09-11 2008-10-01 中国建筑第六工程局有限公司 Basement waterproofing drainage structure
CN201254514Y (en) * 2008-05-08 2009-06-10 贵阳铝镁设计研究院 Novel sludge anhydration field
CN101705691A (en) * 2009-10-30 2010-05-12 南通建工集团股份有限公司 Construction method of dewatering well under foundation slab in foundation pit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020035216A (en) * 2000-11-04 2002-05-11 최한순 Structure method for drainageway of weak stratum and the conduct pipe thereof
CN201125391Y (en) * 2007-09-11 2008-10-01 中国建筑第六工程局有限公司 Basement waterproofing drainage structure
CN101250879A (en) * 2008-04-01 2008-08-27 中国第一冶金建设有限责任公司 Method for processing bottom solum trickleing water of deep building pit
CN201254514Y (en) * 2008-05-08 2009-06-10 贵阳铝镁设计研究院 Novel sludge anhydration field
CN101705691A (en) * 2009-10-30 2010-05-12 南通建工集团股份有限公司 Construction method of dewatering well under foundation slab in foundation pit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106381880A (en) * 2016-08-31 2017-02-08 中国水利水电第五工程局有限公司 Treatment method of peat soil dam foundation
CN106381880B (en) * 2016-08-31 2018-10-19 中国水利水电第五工程局有限公司 The processing method of the peat soil dam foundation
CN106869152A (en) * 2017-03-31 2017-06-20 中国水利水电第十工程局有限公司 A kind of phreatic high chiltern canal slope is changed and is filled out from row's drainage system construction method
CN109235911A (en) * 2018-09-04 2019-01-18 中国三冶集团有限公司 A kind of water-saving depositing dust construction method of construction site

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