CN109027696A - A kind of buried oil/gas pipe protection falling rocks structure - Google Patents

A kind of buried oil/gas pipe protection falling rocks structure Download PDF

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Publication number
CN109027696A
CN109027696A CN201811069565.XA CN201811069565A CN109027696A CN 109027696 A CN109027696 A CN 109027696A CN 201811069565 A CN201811069565 A CN 201811069565A CN 109027696 A CN109027696 A CN 109027696A
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CN
China
Prior art keywords
column
fixed
support column
high gradient
gradient slope
Prior art date
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Pending
Application number
CN201811069565.XA
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Chinese (zh)
Inventor
罗鑫
朱大鹏
廖磊
宋辉
彭泰鑫
万盼盼
李旺林
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Southwest Petroleum University
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Southwest Petroleum University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Southwest Petroleum University filed Critical Southwest Petroleum University
Priority to CN201811069565.XA priority Critical patent/CN109027696A/en
Publication of CN109027696A publication Critical patent/CN109027696A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17DPIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00Protection or supervision of installations

Abstract

The present invention relates to a kind of buried oil/gas pipes to protect falling rocks structure, the support column of fixed column and the setting of multiple parallel intervals including the setting of multiple vertical spacings, the bottom end of the fixed column is downwards in fixed insertion road side, the top of the fixed column is fixedly connected with one end of the support column, in the fixed insertion high gradient slope of the other end of the support column, the support column is located at the vertical top of oil/gas pipe.Solve current mountainous region high gradient slope collapse rock-fall area laying oil-gas pipeline safety protection question.

Description

A kind of buried oil/gas pipe protection falling rocks structure
Technical field
The present invention relates to oil-gas transportations to set up field, and in particular to a kind of buried oil/gas pipe protection falling rocks structure.
Background technique
With the high speed development of economic construction of China, the energy demands such as petroleum resources increasingly increase, and pipeline is as a kind of high The means of transportation for imitating low consumption has become world's transport most important and most common mode of petroleum resources at present.China is vast in territory, Oil and gas pipeline will inevitably pass through the Mountain area that topography and geomorphology is changeable, geological structure is complicated.Such as " West-east Gas work Journey, it is about mountains low-to-middle in height 422Km, mountain that China is apart from longest, the maximum gas pipeline of bore, and wherein hills location is about 368Km Between basin be about 140Km, river valley river tableland section is about 72Km, and all fronts pipeline is all made of buried mode and lays, and pipeline minimum is embedded Depth is 1.2m-1.5m, and location lay length accounts for about the 25% of total length.Mountainous region roughing-in and region of no relief roughing-in phase Than, a distinct issues are that seismic survey in mountainous area takes place frequently, buried depth of pipeline is shallow, for shell steel-tube construction, to include high pressure inflammable easily Quick-fried medium is particularly easy to the invasion by geological disaster.And high gradient slope collapse rock-fall is seismic survey in mountainous area the most universal One of problem is tied for one in mountainous region roughing-in at present for the practicable protection of mountainous region high gradient slope collapse rock-fall not yet Structure, and oil and gas pipeline is once destroyed, it will the loss of huge economy even personnel is caused, therefore is badly in need of one kind and is directed to The practicable safeguard structure of mountainous region high gradient slope collapse rock-fall
Summary of the invention
In order to solve the above-mentioned technical problem the present invention provides a kind of buried oil/gas pipe protection falling rocks structure, solve current mountain Oil-gas pipeline safety protection question is laid in ground high gradient slope collapse rock-fall area.
The technical scheme to solve the above technical problems is that a kind of buried oil/gas pipe protects falling rocks structure, packet The fixed column of multiple vertical spacing settings and the support column of multiple parallel intervals setting are included, the bottom end of the fixed column is fixed downwards It is inserted into road side, the top of the fixed column is fixedly connected with one end of the support column, the other end of the support column In fixed insertion high gradient slope, the support column is located at the vertical top of oil/gas pipe.
The beneficial effects of the present invention are: the arch frame structure of fixed column and support column composition is set above oil/gas pipe, it can The impact force of falling stone that high gradient slope is fallen is conducted to the soil body of oil and gas pipeline two sides, safeguard structure effective protection of the invention The buried oil and gas pipeline in mountainous region is from the destruction of high gradient slope falling rocks, while safety protection structure of the present invention is simple, is easy to construct, Project cost is low, is able to ascend economic benefit;Slow down the operation management pressure of long-distance oil & gas pipeline transport.
Based on the above technical solution, the present invention can also be improved as follows.
Further, it is equipped with the sub-barrier being vertically arranged on the support column, the sub-barrier is located at the fixation The vertical top of column, the bottom end of the sub-barrier are fixedly connected with the upper surface of the support column, the two neighboring auxiliary The sand block plate being vertically arranged is equipped between baffle, the bottom end of the sand block plate is extended downwardly to abut with the surface of the road, The two sides of the sand block plate are fixedly connected with the side wall of the sub-barrier of two sides and fixed column respectively.
Beneficial effect using above-mentioned further scheme is: reinforcing to support construction, improves impact resistance ability.
Further, the one side and the high gradient slope of the sand block plate and the sub-barrier 5 towards the high gradient slope Between be filled with sand, the sand abuts with high gradient slope, sand block plate and sub-barrier.
Beneficial effect using above-mentioned further scheme is: forming buffer layer, impact force of falling stone can be passed through sand Buffering, reduces the stress of safeguard structure.
Further, the level height of one end that the support column is connect with the fixed column is less than the support column and is inserted into institute State the level height of one end in high gradient slope.
Beneficial effect using above-mentioned further scheme is: impact force of falling stone being drawn to oliquely downward, impact force is avoided Safeguard structure is impacted straight down, improves safeguard structure impact resistance.
Further, the support column is equipped with a horizontally disposed undertaking column, the undertaking far from one end of the fixed column One end of column and the support column are integrally formed close to one end of the high gradient slope, the fixed insertion of the other end for accepting column In the high gradient slope.
Beneficial effect using above-mentioned further scheme is: the rigidity of the safeguard structure increased, and then makes safeguard structure Bigger impact can be kept out.
Further, the undertaking column is inserted into one end in the high gradient slope and is fixed with for fixing with the high gradient slope The fixation dowel A of connection.
Beneficial effect using above-mentioned further scheme is: improving fixed effect, avoids safeguard structure due to impacting from height Gradient slope is fallen.
Further, the bottom end of the fixed column is also fixed with the fixation dowel B for being fixedly connected with ground end.
Beneficial effect using above-mentioned further scheme is: improving fixed effect, safeguard structure is avoided to occur due to impact Topple over.
Further, fixed between two adjacent sub-barriers and between two adjacent fixed columns to connect It is connected to horizontally disposed connection reinforcing bar, the sand block plate is mortar flag stone masonry, and the middle part of the connection reinforcing bar is located at the gear In sand plate.
Beneficial effect using above-mentioned further scheme is: in the identical situation of effect for bearing effect impact, with grouting Slabstone masonry is easy to construct, and project cost is low, increases economic efficiency.
Detailed description of the invention
Fig. 1 is diagrammatic cross-section of the present invention;
Fig. 2 is safeguard structure schematic diagram of the present invention;
Fig. 3 is present invention connection reinforcing bar schematic diagram;
Fig. 4 is reinforced steel schematic diagram of the present invention.
In attached drawing, parts list represented by the reference numerals are as follows:
1, high gradient slope, 2, road, 3, oil/gas pipe, 4, fixed column, 5, sub-barrier, 6, support column, 7, undertaking column, 8, Sand, 9, fixed dowel A, 10, sand block plate, 11, fixed dowel B, 12, reinforced steel, 13, connection reinforcing bar.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and It is non-to be used to limit the scope of the invention.
Embodiment
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of buried oil/gas pipe 3 protects falling rocks structure, including multiple vertical spacings The support column 6 of the fixed column 4 of setting and the setting of multiple parallel intervals, the bottom end of fixed column 4 is fixed downwards to be inserted into 2 side of road In, road 2 is Tu Shilu, and oil/gas pipe 3 is embedded in the road Tu Shi, and the top of fixed column 4 is fixedly connected with one end of support column 6, Fixed column 4 can be poured with support column 6 for steel frame construction or armored concrete, and fixed column 4 and support column 6 are armored concrete When structure, the reinforced steel 12 in fixed column 4 intersects with the reinforced steel 12 in support column 6, so that total is more stable, In the fixed insertion high gradient slope 1 of the other end of support column 6, high gradient slope 1 is the rock matter high gradient slope 1 of cranny development, support column 6 Positioned at the vertical top of oil/gas pipe 3.The length of fixed column 4 is 80cm, width 80cm, is highly 300cm, support column 6 Length is 550cm, is highly 100cm, width 80cm, and the spacing between fixed column 4 is 80cm, the spacing between support column 6 For 80cm, the distance on top of 6 bottom end of support column apart from oil/gas pipe 3 is 50cm, and the length that fixed column 4 is inserted into road 2 is 200cm;
Be equipped with the sub-barrier being vertically arranged 5 on support column 6, sub-barrier 5 be located at fixed column 4 it is vertical on Side, the bottom end of sub-barrier 5 are fixedly connected with the upper surface of support column 6, and sub-barrier 5 equally can be steel plate or armored concrete Wallboard is poured, if steel plate structure, is welded and fixed with support rod, if reinforced concrete structure, the reinforced steel of sub-barrier 5 12 are downwardly into support column 6, intersect with the reinforced steel 12 in support column 6, referring particularly to Fig. 4, the one side of sub-barrier 5 Towards high gradient slope 1, lateral width of the sub-barrier 5 towards high gradient slope 1 is of same size with support column 6, sub-barrier 5 Height is 100cm, width 80cm, with a thickness of 40cm;The sand block plate being vertically arranged is equipped between two neighboring sub-barrier 5 10, the bottom end of sand block plate 10 is extended downwardly to abut with the surface of road 2, the level height and sub-barrier on the top of sand block plate 10 5 level height is identical, and the two sides of sand block plate 10 are fixedly connected with the side wall of the sub-barrier 5 of two sides and fixed column 4 respectively, Sand block plate 10 is that mortar flag stone is built, and is fixed between two adjacent sub-barriers 5 and between two adjacent fixed columns 4 It is connected with horizontally disposed connection reinforcing bar 13, the middle part of connection reinforcing bar 13 is located in sand block plate 10, and the quantity of connection reinforcing bar 13 is 6-10 root, the height of sand block plate 10 are 300cm, width 80cm, with a thickness of 40cm;
Sand block plate 10 and sub-barrier 5 are towards being filled with sand 8, sand between the one side and high gradient slope 1 of high gradient slope 1 Soil 8 is abutted with high gradient slope 1, sand block plate 10 and sub-barrier 5, and sand block plate 10 and sub-barrier 5 are for blocking the sand of filling 8, the filling of sand 8 from 10 top of sand block plate until it can flow out, and when falling rocks is fallen on safeguard structure, sand 8 plays slow Punching effect, avoids on direct active force to support column 6 and fixed column 4, after sand 8 is impacted, impact force is transferred to sand block On plate 10, sand block 8 pairs of sands 8 of soil are supported;
The level height of one end that support column 6 is connect with fixed column 4 is less than one end that support column 6 is inserted into high gradient slope 1 Level height the inclination so that support column 6 keeps down, after falling rocks is fallen down, the support column 6 tilted down can will be rushed Power is hit to buffering obliquely downward, avoids the direct face support column 6 of the impact of falling rocks, so that support column 6 is able to bear bigger impact force, Service life is able to extend, and the angle that support column 6 and horizontal plane are formed is 20 degree, and under this angle, what support column 6 was able to bear is rushed It hits more greatly, it is longer using the time;
Support column 6 is additionally provided with a horizontally disposed undertaking column 7 far from one end of fixed column 4, and undertaking column 7 is stainless steel knot Structure, it is highly 100cm that the length for accepting column 7, which is 150cm, width 80cm, accepts the interior length that column 7 is inserted into high gradient slope 1 It for 100-150cm, is inserted into high gradient slope 1, bears bigger impact force, one end and the support column 6 for accepting column 7 are close One end of high gradient slope 1 is integrally formed, and is accepted in the fixed insertion high gradient slope 1 of the other end of column 7;
It accepts one end in the insertion high gradient slope 1 of column 7 and is fixed with the fixation dowel for being fixedly connected with high gradient slope 1 A9, fixed dowel A9 are inserted into one end in high gradient slope 1 diagonally downward with horizontal plane at 20 degree of angles, the length of fixed dowel A9 For 150cm;The bottom end of fixed column 4 is also fixed with the fixation dowel B11 for being fixedly connected with ground end, fixed dowel B11's Length is 80cm;Fixed dowel A9 and fixed dowel B11 is the prior art, and specific structure is not described in detail, and is mainly used for Auxiliary will accept column 7 and 4 fixation of fixed column, not easily to fall off;
In use, fixed column 4 and support column 6 are connected, by the bottom end of fixed column 4 and dowel B11 is fixed to underthrust Fixed column 4 is fixed on road 2 by the side for entering road 2, will be accepted in column 7 and fixed dowel A9 insertion high gradient slope 1, point Not Jian Ge 80cm sand 8 is filled between the support column 6 for being spaced apart from each other setting, and is covered on and along this structure of Pipe installing On support column 6, sand 8 is filled up until it can flow out from 10 top of sand block plate, when falling rocks occurs for high gradient slope 1, whereabouts Stone is fallen on sand 8, buffers a large amount of impact forces, and remaining impact force continues to impact support column 6, due to the support of support column 6, So that falling rocks will not directly impact on oil/gas pipe 3, the damage of oil/gas pipe 3 is avoided, and oil and gas leakage is avoided to cause Heavy economic losses.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the invention, all in the spirit and principles in the present invention Within, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.

Claims (8)

1. a kind of buried oil/gas pipe protects falling rocks structure, which is characterized in that the fixed column (4) including the setting of multiple vertical spacings With the support column (6) of multiple parallel intervals setting, the bottom end of the fixed column (4) is fixed downwards to be inserted into road (2) side, institute The top for stating fixed column (4) is fixedly connected with one end of the support column (6), the fixed insertion of the other end of the support column (6) In high gradient slope (1), the support column (6) is located at the vertical top of oil/gas pipe (3).
2. a kind of buried oil/gas pipe according to claim 1 protects falling rocks structure, which is characterized in that the support column (6) sub-barrier (5) being vertically arranged is equipped on, the sub-barrier (5) is located at the vertical top of the fixed column (4), The bottom end of the sub-barrier (5) is fixedly connected with the upper surface of the support column (6), the two neighboring sub-barrier (5) Between be equipped with the sand block plate (10) being vertically arranged, the bottom end of the sand block plate (10) extends downwardly the table with the road (2) Face abuts, and the two sides of the sand block plate (10) are fixed with the sub-barrier of two sides (5) and the side wall of fixed column (4) respectively to be connected It connects.
3. a kind of buried oil/gas pipe according to claim 2 protects falling rocks structure, which is characterized in that the sand block plate (10) and the sub-barrier (5) towards between the one side and the high gradient slope (1) of the high gradient slope (1) be filled with sand Native (8), the sand (8) abut with high gradient slope (1), sand block plate (10) and sub-barrier (5).
4. a kind of buried oil/gas pipe according to claim 1 protects falling rocks structure, which is characterized in that the support column (6) level height of the one end connecting with the fixed column (4) is less than the support column (6) and is inserted into the high gradient slope (1) One end level height.
5. a kind of buried oil/gas pipe according to claim 4 protects falling rocks structure, which is characterized in that the support column (6) far from the fixed column (4) one end be equipped with horizontally disposed a undertakings column (7), it is described undertaking column (7) one end with it is described Support column (6) is integrally formed close to the one end of the high gradient slope (1), described in the fixed insertion of the other end for accepting column (7) In high gradient slope (1).
6. a kind of buried oil/gas pipe according to claim 5 protects falling rocks structure, which is characterized in that the undertaking column (7) insertion interior one end of the high gradient slope (1) is fixed with the fixation dowel A for being fixedly connected with the high gradient slope (1) (9)。
7. a kind of buried oil/gas pipe according to claim 1-6 protects falling rocks structure, which is characterized in that described The bottom end of fixed column (4) is also fixed with the fixation dowel B (11) for being fixedly connected with ground end.
8. according to a kind of described in any item buried oil/gas pipe protection falling rocks structures of Claims 2 or 3, which is characterized in that phase Between two adjacent sub-barriers (5) and level is fixedly connected between two adjacent fixed columns (4) to set The connection reinforcing bar (13) set, the sand block plate (10) are mortar flag stone masonry, and the middle part of connection reinforcing bar (13) is located at described In sand block plate (10).
CN201811069565.XA 2018-09-13 2018-09-13 A kind of buried oil/gas pipe protection falling rocks structure Pending CN109027696A (en)

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Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731696A (en) * 1951-06-07 1956-01-24 Griffin & George Ltd Adjustable clamps
JPH0710015U (en) * 1993-07-22 1995-02-10 日本サミコン株式会社 Shed for road protection
US6000277A (en) * 1998-06-05 1999-12-14 Southwest Research Institute Method for the prediction of rupture in corroded transmission pipes subjected to combined loads
JP2001323417A (en) * 2000-05-17 2001-11-22 Sho Bond Constr Co Ltd Rock shed
JP2003184099A (en) * 2001-12-19 2003-07-03 Yoshinori Matsuki Preventive force increasing method for preventive pile
US20040101368A1 (en) * 2002-11-21 2004-05-27 Daigle Richard A. Apparatus for pipeline stabilization and shoreline erosion protection
CN101974886A (en) * 2010-07-30 2011-02-16 陈洪凯 Combined rock fall shed tunnel and installation method thereof
CN203334198U (en) * 2013-06-28 2013-12-11 中铁第四勘察设计院集团有限公司 Novel shed tunnel structure
RU2561362C1 (en) * 2014-05-28 2015-08-27 Общество с ограниченной ответственностью "Мики" Structure to protect pipelines against impact loads
CN105133625A (en) * 2015-09-16 2015-12-09 中南大学 Reinforced structure of tunnel transversely penetrating through sliding slope and construction method
WO2015198126A1 (en) * 2014-06-23 2015-12-30 Findalto S.R.L. Sheathing chain device
CN106638340A (en) * 2016-12-02 2017-05-10 大连理工大学 Combined energy dissipation shed frame structure for preventing rockfall of high and steep slope in earthquake region
CN107558387A (en) * 2017-10-25 2018-01-09 吉林大学 Protect the novel combination type flexible hangar tunnel structure of high-altitude falling rocks and colluvial rubble
CN108374358A (en) * 2018-05-09 2018-08-07 中铁二院工程集团有限责任公司 A kind of rockfall is passively blocked construction
CN208817103U (en) * 2018-09-13 2019-05-03 西南石油大学 A kind of buried oil/gas pipe protection falling rocks structure

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731696A (en) * 1951-06-07 1956-01-24 Griffin & George Ltd Adjustable clamps
JPH0710015U (en) * 1993-07-22 1995-02-10 日本サミコン株式会社 Shed for road protection
US6000277A (en) * 1998-06-05 1999-12-14 Southwest Research Institute Method for the prediction of rupture in corroded transmission pipes subjected to combined loads
JP2001323417A (en) * 2000-05-17 2001-11-22 Sho Bond Constr Co Ltd Rock shed
JP2003184099A (en) * 2001-12-19 2003-07-03 Yoshinori Matsuki Preventive force increasing method for preventive pile
US20040101368A1 (en) * 2002-11-21 2004-05-27 Daigle Richard A. Apparatus for pipeline stabilization and shoreline erosion protection
CN101974886A (en) * 2010-07-30 2011-02-16 陈洪凯 Combined rock fall shed tunnel and installation method thereof
CN203334198U (en) * 2013-06-28 2013-12-11 中铁第四勘察设计院集团有限公司 Novel shed tunnel structure
RU2561362C1 (en) * 2014-05-28 2015-08-27 Общество с ограниченной ответственностью "Мики" Structure to protect pipelines against impact loads
WO2015198126A1 (en) * 2014-06-23 2015-12-30 Findalto S.R.L. Sheathing chain device
CN105133625A (en) * 2015-09-16 2015-12-09 中南大学 Reinforced structure of tunnel transversely penetrating through sliding slope and construction method
CN106638340A (en) * 2016-12-02 2017-05-10 大连理工大学 Combined energy dissipation shed frame structure for preventing rockfall of high and steep slope in earthquake region
CN107558387A (en) * 2017-10-25 2018-01-09 吉林大学 Protect the novel combination type flexible hangar tunnel structure of high-altitude falling rocks and colluvial rubble
CN108374358A (en) * 2018-05-09 2018-08-07 中铁二院工程集团有限责任公司 A kind of rockfall is passively blocked construction
CN208817103U (en) * 2018-09-13 2019-05-03 西南石油大学 A kind of buried oil/gas pipe protection falling rocks structure

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
马清文 等: "崩塌落石地区长输油气管道防护", 水土保持研究, pages 146 - 148 *

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