CN102518136A - Flexible reinforced combined protection structure for preventing and treating humidifying damage of soft rock strongly weathered zone - Google Patents
Flexible reinforced combined protection structure for preventing and treating humidifying damage of soft rock strongly weathered zone Download PDFInfo
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- 239000011435 rock Substances 0.000 title claims abstract description 46
- 244000025254 Cannabis sativa Species 0.000 claims abstract description 13
- 239000002689 soil Substances 0.000 claims abstract description 13
- 239000004746 geotextile Substances 0.000 claims abstract description 12
- 238000009412 basement excavation Methods 0.000 claims abstract description 6
- 230000002787 reinforcement Effects 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 9
- 210000003205 muscle Anatomy 0.000 claims 5
- 241000196324 Embryophyta Species 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000009736 wetting Methods 0.000 abstract description 9
- 230000001681 protective effect Effects 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 20
- 239000002356 single layer Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明公开了一种防治软岩强风化带湿化破坏的柔性加筋组合防护结构,边坡上部的残积土层(1)采用在开挖面上铺设有第一层土工布(7)及铺植壤土(6)并植草;边坡中部的强风化岩带(2)的软岩采用柔性加筋支挡结构进行加固;边坡下部的弱风化软岩(3)采用三维植草(5)防护。本发明是一种边坡稳定又极大地降低工程量且技术简便、施工速度快、经济环保的用于抗软岩边坡强风化岩带湿化破坏的柔性加筋支挡组合防护结构。
The present invention discloses a flexible reinforced combined protective structure for preventing and controlling the wetting damage of a strongly weathered zone of soft rock. The residual soil layer (1) at the upper part of the slope is provided with a first layer of geotextile (7) and loam (6) and grass on the excavation surface; the soft rock of the strongly weathered rock zone (2) in the middle part of the slope is reinforced by a flexible reinforced retaining structure; the weakly weathered soft rock (3) at the lower part of the slope is protected by three-dimensional grass planting (5). The present invention is a flexible reinforced retaining combined protective structure for preventing the wetting damage of a strongly weathered zone of a soft rock slope, which has stable slopes and greatly reduces the amount of engineering work, and is simple in technology, fast in construction speed, economical and environmentally friendly.
Description
技术领域 technical field
本发明涉及一种公路路堑边坡支挡与防护结构物,特别是涉及一种防治软岩强风化带湿化破坏的柔性加筋组合防护结构。The invention relates to a retaining and protective structure for road cutting slopes, in particular to a flexible reinforced composite protective structure for preventing and controlling wet damage in soft rock strong weathering zone.
背景技术 Background technique
红层软岩在适宜风化部位常常易形成一个厚度在6m-10m的残积土和强风化岩带,当软岩强风化岩带含有局部滞水时,强风化岩带的红层软岩常被湿化,一旦开挖,则常以强风化岩带为剪出口,发生浅层坍塌破坏。有时,也会由于软岩强风化岩带在工后被降雨入渗的湿化造成该类坍塌破坏。目前为防止该类开挖边坡的破坏常采用锚杆框架梁对边坡进行加固,但锚杆框架梁加固不仅工艺复杂、施工速度慢、造价高,有时仍然会因锚杆锚固力失效发生破坏。软岩风化边坡的强风化岩带湿化破坏,主要是由于在位于边坡残积土层下的强风化岩带的软岩被湿化后抗剪强度降低,从而导致开挖边坡沿强风化岩带发生剪切滑动破坏。Red-bed soft rocks are often prone to form a residual soil and strongly weathered rock zone with a thickness of 6m-10m in the suitable weathering position. When the soft rock strong-weathered rock zone contains local water retention, the red-bed soft rock in the strong Wet, once excavated, the strong weathered rock zone is often used as the shear outlet, causing shallow collapse and damage. Sometimes, this type of collapse and damage is also caused by the wetting of the soft rock and strong weathered rock belt after the construction is infiltrated by rainfall. At present, in order to prevent the damage of this type of excavation slope, the anchor frame beam is often used to reinforce the slope, but the reinforcement of the anchor frame beam is not only complicated in process, slow in construction speed, and high in cost, but sometimes it still occurs due to the failure of the anchor force. destroy. The wetting failure of the strongly weathered rock zone of the soft rock weathered slope is mainly due to the decrease of the shear strength of the soft rock in the strongly weathered rock zone under the residual soil layer of the slope after wetting, which leads to the excavation of the slope along the strong wind Shear-slip failure occurred in the rock zone.
发明内容 Contents of the invention
本发明所要解决的技术问题是提供一种边坡稳定又极大地降低工程量且技术简便、施工速度快、经济环保的用于抗软岩边坡强风化岩带湿化破坏的柔性加筋支挡组合防护结构。The technical problem to be solved by the present invention is to provide a flexible reinforced support for anti-wetting damage of soft rock slope with strong weathered rock belt, which is stable in slope, greatly reduces engineering quantity, simple in technology, fast in construction speed, economical and environmentally friendly. Block combined protective structure.
为了解决上述技术问题,本发明提供的防治软岩强风化带湿化破坏的柔性加筋组合防护结构,边坡上部的残积土层采用在开挖面上铺设有第一单层土工布,在所述的第一单层土工布上铺有植壤土并植草;边坡中部的强风化岩带的软岩采用柔性加筋支挡结构进行加固;边坡下部的弱风化软岩采用三维植草防护。In order to solve the above-mentioned technical problems, the present invention provides a flexible reinforced combined protective structure for preventing and controlling the wet damage of the soft rock strong weathering zone. The first single-layer geotextile is covered with planting loam and grass; the soft rock in the strongly weathered rock zone in the middle of the slope is reinforced with a flexible reinforced support structure; the weakly weathered soft rock in the lower part of the slope is protected by three-dimensional grass planting .
所述的柔性加筋支挡结构的结构是在所述的强风化岩带的底部设置透水基础层,所述的透水基础层由碎石土压实层组成,在所述的碎石土下开挖有渗沟,所述的渗沟通过在防水土工布上铺设有软式透水管并充填有碎石组成;在整个所述的柔性加筋支挡结构中铺设有筋材,每层的所述的筋材都超过所述的柔性加筋支挡结构的宽度,反包至上一层,并与上一层的筋材连接,每层所述的筋材用所开挖的回填土回填压实,在所述的柔性加筋支挡结构的顶部设有平台及边沟,所述的平台顶部由第二单层土工布加植壤土构成。The structure of the flexible reinforced retaining structure is to set a permeable base layer at the bottom of the strongly weathered rock belt, and the permeable base layer is composed of a compacted gravel soil layer. A seepage trench is excavated, and the seepage is composed of soft permeable pipes laid on the waterproof geotextile and filled with gravel; reinforcements are laid in the entire flexible reinforced support structure, and the said The reinforcements of each layer exceed the width of the flexible reinforced retaining structure, are turned up to the upper layer, and are connected with the reinforcements of the upper layer, and the reinforcements of each layer are backfilled and compacted with the excavated backfill soil , a platform and a side ditch are arranged on the top of the flexible reinforced retaining structure, and the top of the platform is composed of a second single-layer geotextile and planted loam.
所述的筋材为土工格栅。The reinforcement material is geogrid.
采用上述技术方案的防治软岩强风化带湿化破坏的柔性加筋组合防护结构,仅在强风化岩带使用柔性加筋支挡结构加固,在软岩边坡的残积土层和弱风化岩带则分别采用植草和三维植草防护,加固和防护的工程措施针对性强,既保证了边坡稳定又极大地降低了柔性加筋支挡结构的工程量,与目前有效的锚杆框架梁方案比较,具有技术简便、施工速度快、经济环保等优点。The flexible-reinforced combined protective structure for the prevention and treatment of wet damage in the soft rock strong weathered zone adopts the above-mentioned technical scheme. The belt is protected by grass planting and three-dimensional grass planting respectively. The engineering measures of reinforcement and protection are highly targeted, which not only ensures the stability of the slope but also greatly reduces the engineering volume of the flexible reinforced retaining structure. It is different from the current effective anchor frame beam scheme. Compared with other methods, it has the advantages of simple technology, fast construction speed, economy and environmental protection.
综上所述,本发明是一种边坡稳定又极大地降低工程量且技术简便、施工速度快、经济环保的用于抗软岩边坡强风化岩带湿化破坏的柔性加筋支挡组合防护结构。To sum up, the present invention is a kind of flexible reinforced support for anti-wetting damage of soft rock slope with strong weathered rock zone, which is stable in slope, greatly reduces engineering quantity, has simple technology, fast construction speed, and is economical and environmentally friendly. Combined protective structure.
附图说明 Description of drawings
图1是本发明的结构示意图。Fig. 1 is a schematic structural view of the present invention.
具体实施方式 Detailed ways
下面结合附图和具体实施方式对本发明作进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
参见图1,根据软岩风化边坡的强风化岩带湿化破坏,主要是由于在位于边坡残积土层1下的强风化岩带2的软岩被湿化后抗剪强度降低,从而导致开挖边坡沿强风化岩带发生剪切滑动破坏的规律,本发明采用组合方案来加以防护,该组合方案特征是:边坡上部的残积土层1自身能稳定,因此采用植草防护,即在开挖面上铺设一第一单层土工布7,再在第一单层土工布7一铺植壤土6并植草;边坡中部的强风化岩带2的软岩采用柔性加筋支挡结构进行加固;边坡下部的弱风化软岩采用三维植草5防护,边坡下部设有路面边沟13。柔性加筋支挡结构具有如下特征:柔性加筋支挡结构的底层为透水基础层,透水基础层由碎石土8压实层组成,透水基础层设置在强风化岩带2的底部,透水基础层下开挖有渗沟,渗沟通过在防水土工布4上铺设软式透水管14并充填碎石15形成;在整个柔性加筋支挡结构中铺设筋材9,筋材9采用土工格栅,每层的筋材9都超过渗沟的宽度,反包至上一层,并与上一层的筋材9连接,每层筋材9用所开挖的回填土10回填压实,在柔性加筋支挡结构顶部设有平台及截水沟12,平台顶部由第二单层土工布11加植壤土构成。Referring to Figure 1, according to the wetting failure of the strongly weathered rock zone of the soft rock weathered slope, it is mainly due to the decrease of the shear strength of the soft rock in the strongly weathered
参见图1,本发明仅在强风化岩带使用柔性加筋支挡结构加固,在软岩边坡的残积土层和弱风化岩带则分别采用植草和三维植草防护,加固和防护的工程措施针对性强,既保证了边坡稳定又极大地降低了柔性加筋支挡结构的工程量,与目前有效的锚杆框架梁方案比较,具有技术简便、施工速度快、经济环保等优点。Referring to Fig. 1, the present invention only uses the flexible reinforced retaining structure to strengthen in the strongly weathered rock zone, and then respectively adopts grass planting and three-dimensional grass planting protection, reinforcement and protection engineering measures in the residual soil layer of the soft rock slope and the weakly weathered rock zone It is highly targeted, which not only ensures the stability of the slope but also greatly reduces the engineering volume of the flexible reinforced retaining structure. Compared with the current effective anchor frame beam scheme, it has the advantages of simple technology, fast construction speed, economical and environmental protection.
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Cited By (6)
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CN103046563A (en) * | 2013-01-18 | 2013-04-17 | 朱维伟 | Ecological landscape slope system conducive to implementation of artistical wall painting |
CN103898844A (en) * | 2014-02-20 | 2014-07-02 | 长沙理工大学 | Rubble stone stack and reinforced soil composite embankment culvert pipe structure |
CN104818734A (en) * | 2015-05-13 | 2015-08-05 | 广东省长大公路工程有限公司 | Waterproof and drainage system capable of preventing completely weathered granite slope water damage and construction method of system |
CN104831747A (en) * | 2015-04-16 | 2015-08-12 | 长沙理工大学 | Concrete mould bag retaining wall |
CN105625444A (en) * | 2016-03-14 | 2016-06-01 | 攀枝花学院 | Impermeable surface layer structure for soil slope |
CN114753309A (en) * | 2022-06-15 | 2022-07-15 | 中国市政工程西南设计研究总院有限公司 | Soil swelling river bank embankment slope greening protection structure capable of relieving river water impact |
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Cited By (10)
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CN103046563A (en) * | 2013-01-18 | 2013-04-17 | 朱维伟 | Ecological landscape slope system conducive to implementation of artistical wall painting |
CN103046563B (en) * | 2013-01-18 | 2015-06-10 | 昆明学院 | Ecological landscape slope system conducive to implementation of artistical wall painting |
CN103898844A (en) * | 2014-02-20 | 2014-07-02 | 长沙理工大学 | Rubble stone stack and reinforced soil composite embankment culvert pipe structure |
CN103898844B (en) * | 2014-02-20 | 2016-01-13 | 长沙理工大学 | A composite embankment culvert structure with piles of rubble and reinforced soil |
CN104831747A (en) * | 2015-04-16 | 2015-08-12 | 长沙理工大学 | Concrete mould bag retaining wall |
CN104831747B (en) * | 2015-04-16 | 2017-06-06 | 长沙理工大学 | A kind of concrete film bag retaining wall |
CN104818734A (en) * | 2015-05-13 | 2015-08-05 | 广东省长大公路工程有限公司 | Waterproof and drainage system capable of preventing completely weathered granite slope water damage and construction method of system |
CN104818734B (en) * | 2015-05-13 | 2016-04-20 | 广东省长大公路工程有限公司 | Control completely decomposed granite side slope damage by water waterproof and water drainage system and construction method thereof |
CN105625444A (en) * | 2016-03-14 | 2016-06-01 | 攀枝花学院 | Impermeable surface layer structure for soil slope |
CN114753309A (en) * | 2022-06-15 | 2022-07-15 | 中国市政工程西南设计研究总院有限公司 | Soil swelling river bank embankment slope greening protection structure capable of relieving river water impact |
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Application publication date: 20120627 |