CN101892669A - Recompression supporting method of tall side slope - Google Patents
Recompression supporting method of tall side slope Download PDFInfo
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- CN101892669A CN101892669A CN2010102152956A CN201010215295A CN101892669A CN 101892669 A CN101892669 A CN 101892669A CN 2010102152956 A CN2010102152956 A CN 2010102152956A CN 201010215295 A CN201010215295 A CN 201010215295A CN 101892669 A CN101892669 A CN 101892669A
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- side slope
- anchor pole
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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Abstract
The invention discloses a side slope supporting method, in particular a recompression supporting method of a tall side slope. The invention aims at providing a supporting method of the tall side slope, which is safe and reliable, reduces the construction period and saves the cost. At least two anchor rods are transversely arranged on the position above the top of the side slope to be supported; a connection reinforcing steel bar is connected between the anchoring rods; geotextile is fixed on the anchor rods and the connection reinforcing steel bar and is paved from the slope surface to the slope toe. The falling of collapse rocks and instability of instable areas can be prevented by using the geotextile to cover the high side slope, and special collapse rock treatment is not needed on the side slope, thereby effectively saving manpower and material resources. The geotextile can recompresses the collapse rock to prevent falling of the collapse rock. The collapse rock fallen occasionally can only fall down along the geotextile and the slope surface and is extruded by the geotextile in the falling process, thereby the friction function, falling speed and energy are reduced and impact downward with accelerated speed is avoided.
Description
Technical field
The present invention relates to a kind of slope support method, relate in particular to a kind of recompression supporting method of tall side slope.
Background technology
Have the protection of the tall and big side slope of a large amount of boulders, danger stone to administer to being scattered, academia, engineering circle are all felt more complicated always and are failed to propose the perfect treatment measures of a cover both at home and abroad.And along with the greatly developing of fields such as water power, highway, bridges and culverts, house property, high-risk side slope problem is more and more.
Difficulty is administered in the supporting of tall and big side slope, wherein, clears up particularly thorny to the stone of endangering of the orphan on the tall and big side slope.Reason is: the 1) orphan of the tall and big side slope stone cleaning effort of endangering, and often engineering quantity is big, short time and adopt one method for cleaning all to be difficult to thoroughly remove fully.2) orphan of the tall and big side slope Removal Technology of stone of endangering, also not really perfect, machinery is difficult to up, is mostly by manually climbing up by holding on to operation.3) manually climb up by holding on to tall and big side slope itself difficulty, it is more difficult firmly to remove the big orphan of the weight stone of endangering in climbing up by holding on to simultaneously, simply often clears up not thoroughly by common modes such as manpowers, stays potential safety hazard easily.4) climb up by holding on to cleaning personnel or, may meet accident, also may suffer the avalanche of the halfway lonely danger stone of top cleaning to impact threat because of basing oneself upon shakiness by the labor cleaning personnel of safety rope.It is very high to be that constructor's interim security measure requires, and is difficult to provide effective security guarantee at present.5) between tall and big side slope clear-up period and the orphan that thoroughly do not fall of the cleaning stone impact energy of endangering big, have other construction operation faces harm of building, structure, traffic main artery or parallel operations huge to toe.
In patent " protective screening and manufacture method thereof " (publication number is CN 1696408A), mention a kind of protective screening, it utilizes anchor pole that protective screening is permanently affixed at the slope and goes up to carry out security protection, this class protective screening needs installed part to make protective screening be fastened to ground, it is underground promptly to adopt intensive installed part to imbed, protective screening is resolved into many relatively independent protection grids, each relatively independent protection grid all can independently be caught lonely danger stone, reaches the purpose of protection.Yet under the execution conditions of tall and big side slope, this protection faces many difficult problems, for example: 1) in the tall and big side slope occasion of geological conditions complexity, artificial and machinery is difficult to up, linked network, plants anchor and the shotcrete construction difficulty is very big, protective screening is fastened to ground almost can't realizes.2) even personnel's equipment gets on, limited because of moving and lay the space, be difficult to implement effective security measure so that interim safety guarantee to be provided, personnel's equipment also might suffer the threat of the lonely danger of avalanche stone.3) the permanent protective screening system of linked network+spray anchor, not only constructional difficulties, and cost is higher, is difficult to control cost in tall and big side slope.4) volume might cause security incident along spilling between the grid less than the stone of protective screening grid.
Another aspect, in view of the stone cleaning difficulty of endangering of the orphan on the tall and big side slope, clear up long in time limit, the cost height, and in a lot of engineerings, be not need the stone of endangering of the orphan on the tall and big side slope section is cleared up energetically or do not needed and clears up specially, as the hangar tunnel engineering, the part dam construction, the rock drilling of toe subregion, probing, greening, engineerings such as improvement, these engineerings will be laid the engineering of permanent safety precautionss such as solid retaining wall or passive protection net etc. at toe, the purpose of itself is the slump of protection side slope and impacts, so do not need the lonely danger of slope table stone is cleared up specially, do not need slope table that indivedual unstable regions are administered specially yet, only require during these engineering constructions in, a kind of safeguard procedures are arranged, can be to being positioned at the toe scope of operation of high-risk side slope damaging range, personnel's equipment of the scope of operation etc. can effectively protect, and unlikelyly suffers on the tall and big side slope slump of lonely danger stone to impact to threaten to get final product.
Therefore, find out a kind of deathtrap that need not climb up by holding on to high slope, also do not need to the lonely danger of tall and big side slope stone carry out special disposal, only in certain construction period or longer a period of time, the safety precautions and the method for protection are played in personnel, equipment and construction of structures in the high-risk side slope damaging range, have great importance.
Summary of the invention
Technical problem to be solved by this invention provide a kind of safe and reliable, reduce the duration, save the recompression supporting method of tall side slope of cost.
It is as follows that the present invention solves the recompression supporting method of tall side slope that its technical problem adopts: the above position, top, side slope zone that has at least two anchor poles to be horizontally installed on to need protection, be connected with connecting reinforcement between the anchor pole, geotextile system is solid on anchor pole or connecting reinforcement, and geotextile is laid to toe along the slope table.
Further be when skyhook, to arrange with the 2～5m that is spaced apart of adjacent anchor pole.
Further being, laying to toe at geotextile, is that steel wire is covered in solid pressure on anchor pole, covers steel wire and is arranged on the geotextile, and lay to toe along the slope table from top to bottom.
Further be, lay to toe at geotextile, in side slope bottom and near the position of the both sides of geotextile two root bottom part anchor poles are installed at least laterally, are utilized the compacting reinforcing bar laterally the bottom anchor pole at the end, slope to be connected successively and geotextile is compressed under the compacting reinforcing bar.
Further be that the bottom anchor pole is positioned at the vertical height of toe in 2m.
Further be, lay to toe, geotextile is rolled to side slope, and its end and side slope are fitted at geotextile.
Further be, anchor pole is laid in side slope top, zone that is higher than the needs protection and the position of being convenient to lay, and described geotextile is solid on anchor pole or connecting reinforcement by hanging steel wire system.
Further be that recompression supporting method of tall side slope is made up of following steps:
A, designing and calculating
Need height, the width of zone of protection according to side slope, and orphan that may landing on the side slope endanger stone weight and energy, determine material, area size and the weight of required geotextile;
According to geotextile and the weight that covers steel wire, determine quantity, spacing and the anchorage depth of roll bolt;
B, construction anchor pole
The construction anchor pole by the spacing of design and the degree of depth of anchoring, is laid in position more than the top, side slope zone of needs protection;
C, installation connecting reinforcement
Be fixed on connecting reinforcement on the anchor pole successively;
D, laying geotextile
Geotextile is suspended on anchor pole or the connecting reinforcement, then it is transferred along slope table nature, hang to toe until its lower edge;
E, laying cover steel wire
To cover steel wire system admittedly on anchor pole, slowly it be laid to toe along geotextile then, and cover steel wire and be laid on the geotextile;
F, construction bottom anchor pole also connect the compacting reinforcing bar
In side slope bottom and near the position of the both sides of geotextile two root bottom part anchor poles are installed at least laterally, are utilized the compacting reinforcing bar laterally the bottom anchor pole at the end, slope to be connected successively and geotextile is compressed under the compacting reinforcing bar;
E, recovery part
When not needing to continue to provide protection, dismantle connecting reinforcement, geotextile, cover steel wire, suppress reinforcing bar and other accessory.
The invention has the beneficial effects as follows:
1, utilizes geotextile to cover tall and big side slope, can not need specially orphan's stone of endangering is cleared up, need not climb up by holding on to side slope hazardous location construction operation, can effectively use manpower and material resources sparingly, reduce security incident.
2, geotextile can cover the lonely stone of endangering by self gravitation, and the lonely danger of increase stone and the sloping frictional resistance effect of showing stop lonely danger stone whereabouts.
3, geotextile can cover the instable slope section by self gravitation, makes the skid resistance of instable slope section and resisting moment increase, and stops instable slope section avalanche unstability.
4, the orphan that own wt the is bigger stone of endangering is fallen even can not cover, also can only be along the downward landing of limited passage between geotextile and the slope table, and final landing is to the limited scope of toe, and can not jump to run off is difficult to control; And the orphan of these whereabouts stone of endangering is subjected to the extruding and the frictional resistance effect of geotextile along journey, and falling speed and energy reduce, and the harm that drops down onto toe also reduces greatly.
5, when not needing to continue protection, after protected construction operation face completion, can also remove the related geotextile of this supporting method, steel wire etc., thereby reach reusable purpose.
6, save cost.Adopt the method for the invention, than the active protective screening, one can save 1/5～1/12 total cost, and than other interim security measures, one can save 1/5～1/10 total cost
Description of drawings
After Fig. 1 is to use the present invention to construct schematic diagram;
Fig. 2 is the I-I line sectional view of Fig. 1;
Fig. 3 is to use the schematic diagram after the another embodiment of the present invention construction;
Component, position and numbering among the figure: sloping table 1, anchor pole 2, connecting reinforcement 3, cover steel wire 4, geotextile 5, lonely danger stone 6, cement mortar 7, bottom anchor pole 8, compacting reinforcing bar 9, hang steel wire 10.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 1 and Figure 2, have at least two anchor poles 2 to be horizontally installed on above position, the regional top of the side slope that to protect, be connected with connecting reinforcement 3 between the anchor pole 2, geotextile 5 is suspended on anchor pole 2 and the connecting reinforcement 3, geotextile 5 is laid to toe along sloping table 1.
The area of zone of protection is determined the area of geotextile 5 at first as required, and then can make the pulling force load that roll bolt bears, and determines the quantity and spacing of roll bolt according to this load.
Next, need the comparatively open position, top of zone of protection, the cutter eye, implant anchor pole and slip casting in high-risk side slope.Between anchor pole 2, connect connecting reinforcement 3, with geotextile 5 is solid on anchor pole 2 and connecting reinforcement 3, if the roll bolt distance needs zone of protection far away, can adopt reinforcing bar or steel wire, geotextile 5 is suspended on anchor pole 2 and the connecting reinforcement 3, and making geotextile 5 upper limbs be slightly larger than needs zone of protection to get final product.Then geotextile 5 is covered the whole sloping table 1 that needs protection, its coverage is decided with the concrete scope that needs protection, and can directly lay to the end, slope, also can lay to the position near the sloping end.Be pressed on the lonely danger stone 6 because geotextile 5 own wts cover, thereby make lonely danger stone 6 be crushed on the sloping table 1 and be difficult for dropping.Even lonely danger stone 6 falls greatly because of weight, also can fall along the passage between geotextile 5 and the sloping table 1, unlikely generation impatt, its drop energy also can be owing to geotextile 5 reduces greatly with sloping table 1 " compressing " frictional resistance effect, thereby avoids threatening personnel, equipment and the construction of structures of toe.Geotextile 5 is for synthetic fibers weaving or the civil engineering material made through no spinning process such as gluing, hot pressing acupunctures, corrosion-resistant, the intensity height, be convenient to lay, the structure of this type of laying geotextile 5, make geotextile 5 make and have bigger buffering bearing lonely danger stone 6, the orphan who also is difficult for the being fallen stone of endangering scratches.
In Fig. 1, Fig. 2 as can be known, in operating mode than also guaranteeing safety under the complicated situation, be the intrinsic steel wire 4 that covers on the anchor pole 2, cover steel wire 4 and be laid on the geotextile 5 along the slope height direction.At this moment, covering steel wire 4 will effectively increase the pressure that covers of geotextile 5, make geotextile self upset of can not drifting about, also make endanger stone, unstable slope section of orphan between geotextile 5 and the sloping table 1 be subjected to bigger pressure, make the systematic protection security performance further improve.The use that covers steel wire 4 will be decided according to concrete situation, and endangering the orphan, the stone body is less, operating mode comparatively simply can not used under the situation.
As shown in Figure 1, the side slope bottom transverse is provided with at least two root bottom part anchor poles 8, is provided with compacting reinforcing bar 9 between the bottom anchor pole 8, and compacting reinforcing bar 9 is horizontally installed on the geotextile 5.At this moment, the lower end at the end, slope of geotextile 5 is pressed reinforcing bar 9 and pushes down, geotextile 5 upset of also can not drifting about, and simultaneously, compacting reinforcing bar 9 also can further prevent to fly to collapse along the orphan of geotextile 5 and sloping table 1 landing stone 6 generations of endangering.
In Fig. 3, because the regional top and the anchor pole 2 that is not easy to construct that some side slopes need be protected, must be to the anchor pole 2 that goes to construct than the higher position, regional top of needs protection, begin geotextile 5 to lay to waste geotextile 5 this moment again from the position of anchor pole 2, promptly this segment distance to anchor pole 2 need not to protect at the regional top of needs protection, in order to save geotextile 5, geotextile 5 is suspended on anchor pole 2 or the connecting reinforcement 3 by hanging steel wire 10, by this form of construction work, anchor pole 2 is convenient to construct, and the consumption of geotextile 5 can not increase yet.
By the following examples foregoing of the present invention is described in further detail again.But this should be interpreted as that the above-mentioned theme of the present invention only limits to following example.All technical schemes that realizes based on foregoing of the present invention all belong to scope of the present invention.
Embodiment one
Recompression supporting method of tall side slope may further comprise the steps:
The comparatively open level of A, the top, side slope zone that need protect in tall and big side slope is to the appropriate location, with 2m is that the cutter eye is implanted anchor pole at interval, and with cement mortar 7 slip casting anchorings, anchor pole 2 distances at head and the tail two ends need more than or equal to the width that needs zone of protection, and the diameter of anchor pole 2 and the degree of depth etc. are determined according to operating mode;
B, with connecting reinforcement 3 anchor pole 2 is coupled together, the kind and the quantity of connecting reinforcement 3 are decided on operating mode;
C, be solid on anchor pole 2 and connecting reinforcement 3 with geotextile 5, the width of geotextile 5 is suitable with the anchor pole 2 at head and the tail two ends, and its length is more than or equal to the height of need zone of protection;
D, geotextile 5 is laid downwards along sloping table 1, until the whole slope section that is paved with below the required zone of protection;
After E, toe construction finish, or after the security purpose reaches temporarily, dismounting geotextile 5 and respective accessory.
In the present embodiment, only need skyhook 2 and connecting reinforcement 3, cover geotextile 5 then and get final product, under the comparatively simple situation of working condition, use this example can carry out interim protection very fast.
Embodiment two
Recompression supporting method of tall side slope may further comprise the steps:
A, the level comparatively open at the top, side slope zone of needs protection are to the appropriate location, with 5m is that the cutter eye is implanted anchor pole at interval, and with cement mortar 7 slip casting anchorings, anchor pole 2 distances at head and the tail two ends need more than or equal to the width that needs protection, and the diameter of anchor pole 2 and the degree of depth etc. are determined according to operating mode;
B, anchor pole 2 is coupled together the local operating mode of the kind of connecting reinforcement 3 and quantity and deciding with connecting reinforcement 3;
C, be solid on anchor pole 2 and connecting reinforcement 3 with geotextile 5, simultaneously, cover steel wire 4 in solid one of every anchor pole 2 tops system, cover steel wire 4 on geotextile 5, its length can be along sloping table 1 below to toe from anchor pole 2 tops.
D, geotextile 5 is laid downwards along the slope table,,, the geotextile lower edge is inwardly rolled along the slope table, form " J " type, and extrude geotextile 5 turned up portion with finger stone at the toe place until the whole slope section that is paved with below the required zone of protection.To cover steel wire 4 and place on the geotextile 5, and lay downwards, until laying to toe along geotextile 5;
E, need at the end both sides of zone of protection width that compacting anchor pole 8 is set on the slope, connect compacting anchor pole 8 with compacting reinforcing bar 9 again, make geotextile 5 and cover reinforcing bar 4 to place under the compacting reinforcing bar 9 in the process that connects, the quantity of compacting anchor pole 8 and compacting reinforcing bar 9 is decided according to concrete condition;
After F, toe construction finish, or after the security purpose reaches temporarily, dismounting geotextile 5 and respective accessory.
In the present embodiment, it is top-down along geotextile 5 layings that are positioned at the slope table to cover steel wire 4, at the end, slope, is provided with bottom anchor pole 8 and compacting reinforcing bar 9 in addition, helps further reinforcing geotextile, cushions the drop energy of lonely danger stone 6, and then reduces its harm.
Embodiment three
Recompression supporting method of tall side slope may further comprise the steps:
A, on tall and big side slope, exceed the position of the side slope zone top 5m that needs protection, with 3m is that the cutter eye is implanted anchor pole 2 at interval, and with cement mortar 7 slip casting anchorings, anchor pole 2 distances at head and the tail two ends need more than or equal to the width that needs zone of protection, and the diameter of anchor pole 2 and the degree of depth etc. are determined according to operating mode;
B, with connecting reinforcement 3 anchor pole 2 is coupled together, the kind and the quantity of connecting reinforcement 3 are decided on operating mode;
C, being the long suspension steel wire 10 of solid 5m on every anchor pole, is solid the suspension on the steel wire 10 with geotextile 5, and the width of geotextile 5 is suitable with the anchor pole 2 at head and the tail two ends, and its length is more than or equal to the height of need zone of protection;
D, geotextile 5 is laid downwards along sloping table 1, until the whole slope section that is paved with below the required zone of protection;
After E, toe construction finish, or after the security purpose reaches temporarily, dismounting geotextile 5 and respective accessory.
In the present embodiment, the ground that exceeds the 5m place, top, side slope zone that the needs protection anchor pole 2 that is convenient to construct, it is solid on anchor pole 2 and connecting reinforcement 3 utilizing suspension steel wire 10 to make geotextile 5, can be so that anchor pole 2 easy constructions can not used more geotextile 5 yet.
Claims (8)
1. recompression supporting method of tall side slope, it is characterized in that: have at least two anchor poles (2) to be horizontally installed on the above position, top, side slope zone of needs protection, be connected with connecting reinforcement (3) between the anchor pole (2), with geotextile (5) is solid on anchor pole (2) and connecting reinforcement (3), and geotextile (5) is laid to toe along slope table (1).
2. recompression supporting method of tall side slope according to claim 1 is characterized in that: when skyhook (2), arrange with the 2～5m that is spaced apart of adjacent anchor pole (2).
3. recompression supporting method of tall side slope according to claim 1, it is characterized in that: lay to toe at geotextile (5), be that steel wire (4) is covered in solid pressure on anchor pole (2), cover steel wire (4) and be arranged on the geotextile (5), and lay to toe along slope table (1) from top to bottom.
4. according to claim 1,2 or 3 described recompression supporting method of tall side slope, it is characterized in that: lay to toe at geotextile (5), in side slope bottom and near the position of the both sides of geotextile (5) two root bottom part anchor poles (8) are installed at least laterally, are utilized compacting reinforcing bar (9) laterally the bottom anchor pole (8) at the end, slope to be connected successively and geotextile (5) is compressed under the compacting reinforcing bar (9).
5. recompression supporting method of tall side slope according to claim 4 is characterized in that: described bottom anchor pole (8) is positioned at the vertical height of toe in 2m.
6. according to claim 1,2 or 3 described recompression supporting method of tall side slope, it is characterized in that: lay to toe at geotextile (5), geotextile (5) is rolled to side slope, and its end and side slope are fitted.
7. according to claim 1,2 or 3 described recompression supporting method of tall side slope, it is characterized in that: described anchor pole (2) is laid in side slope top, zone that is higher than the needs protection and the position of being convenient to lay, and described geotextile (5) is solid on anchor pole (2) and connecting reinforcement (3) by hanging steel wire (10).
8. recompression supporting method of tall side slope according to claim 4 is characterized in that being made up of following steps:
A, designing and calculating
Need height, the width of zone of protection according to side slope, and orphan that may landing on the side slope endanger stone (6) weight and energy, determine material, area size and the weight of required geotextile (5);
According to geotextile (5) with cover the weight of steel wire (4), determine quantity, spacing and the anchorage depth of roll bolt (2);
B, construction anchor pole (2)
Construction anchor pole (2) by the spacing of design and the degree of depth of anchoring, is laid in position more than the top, side slope zone of needs protection;
C, installation connecting reinforcement (3)
Connecting reinforcement (3) is fixed on the anchor pole (2) successively;
D, laying geotextile (5)
With geotextile (5) is solid on anchor pole (2) and connecting reinforcement (3), then it is transferred naturally along slope table (1), hangs to toe until its lower edge;
E, laying cover steel wire (4)
To cover steel wire (4) is admittedly on anchor pole (2), slowly it is laid to toe along geotextile (5) then, covers steel wire (4) and is laid on the geotextile (5);
F, construction bottom anchor pole (8) also connect compacting reinforcing bar (9)
In side slope bottom and near the position of the both sides of geotextile (5) two root bottom part anchor poles (8) are installed at least laterally, are utilized compacting reinforcing bar (9) laterally the bottom anchor pole (8) at the end, slope to be connected successively and geotextile (5) is compressed under the compacting reinforcing bar (9);
E, recovery part
When not needing to continue to provide protection, dismantle connecting reinforcement (3), geotextile (5), cover steel wire (4), suppress reinforcing bar (9) and other accessory.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102152956A CN101892669B (en) | 2010-07-01 | 2010-07-01 | Recompression supporting method of tall side slope |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102152956A CN101892669B (en) | 2010-07-01 | 2010-07-01 | Recompression supporting method of tall side slope |
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| CN101892669A true CN101892669A (en) | 2010-11-24 |
| CN101892669B CN101892669B (en) | 2012-05-30 |
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| CN2010102152956A Active CN101892669B (en) | 2010-07-01 | 2010-07-01 | Recompression supporting method of tall side slope |
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| CN109863944A (en) * | 2019-03-12 | 2019-06-11 | 中国十九冶集团有限公司 | Rock slope greening structure and its construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2551107A1 (en) * | 1983-08-26 | 1985-03-01 | Cornic Jean | Improvements to the direct fixation of soils, particularly of dunes |
| JPH1088580A (en) * | 1996-09-13 | 1998-04-07 | Koiwa Kanaami Kk | Form for slope frame and construction method for slope frame |
| CN1696408A (en) * | 2004-06-08 | 2005-11-16 | 法策公司 | Protective net and its mfg.method |
| CN201183955Y (en) * | 2008-03-20 | 2009-01-21 | 四川省交通厅公路规划勘察设计研究院 | Side slope ecological protection structure |
-
2010
- 2010-07-01 CN CN2010102152956A patent/CN101892669B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2551107A1 (en) * | 1983-08-26 | 1985-03-01 | Cornic Jean | Improvements to the direct fixation of soils, particularly of dunes |
| JPH1088580A (en) * | 1996-09-13 | 1998-04-07 | Koiwa Kanaami Kk | Form for slope frame and construction method for slope frame |
| CN1696408A (en) * | 2004-06-08 | 2005-11-16 | 法策公司 | Protective net and its mfg.method |
| CN201183955Y (en) * | 2008-03-20 | 2009-01-21 | 四川省交通厅公路规划勘察设计研究院 | Side slope ecological protection structure |
Non-Patent Citations (1)
| Title |
|---|
| 《公路与汽运》 20051230 章照宏 斜坡落石灾害及其SNS柔性防护 , 第06期 2 * |
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