阅读说明：本技术 一种基于加筋型水土保护毯的陡峭边坡防护方法 (Steep slope protection method based on reinforced water and soil protection blanket ) 是由 张曙光 张亮亮 于 2020-05-15 设计创作，主要内容包括：本发明公开了一种基于加筋型水土保护毯的陡峭边坡防护方法,通过在边坡铺设加筋型水土保护毯,结合喷播纤维基材(含种子)的方式,使植被与毯体、土壤等形成一体,该方法安全性能高,水土保护效果好,景观生态和谐自然,施工简单效率高造价低,防护周期长,无岁修成本。(The invention discloses a steep slope protection method based on a reinforced water and soil protection blanket, which is characterized in that the reinforced water and soil protection blanket is laid on a slope, and the vegetation, a blanket body, soil and the like are integrated by combining a mode of spraying fiber base materials (containing seeds).)

1. A steep slope protection method based on a reinforced water and soil protection blanket is characterized by comprising the following steps: the protection method comprises the following steps: 1. 1.1, cleaning and leveling the slope surface before slope surface renovation: loose pumice and rock slag on the rock slope are cleaned, and a smooth rock surface is processed; removing the barrier; filling the cavity with stones; cleaning and brushing or branch reinforcing the local unstable part of the side slope; 1.2, leveling the slope: the slope gradient is not greater than the design requirement, and the boulder raised in the whole hard rock is not cleaned; 2. the protection blanket is laid from top to bottom, firstly, the water and soil protection blanket on the top of the slope is fixed, the water and soil protection blanket can be laid downwards, the length of the lap joint of the left piece and the right piece is 10cm, the lap joint of the upper piece and the lower piece is 15cm, the distance between the reinforced water and soil protection blanket and the slope is adjusted (the water and soil protection blanket is generally positioned at the outer 1/4-outermost side of the designed spray seeding thickness), the main anchoring parts are mainly used at the top of the slope, the lap joint or the main stressed part, the secondary anchoring parts are used at other positions, the anchoring parts do not need to be arranged in order, and the reinforced water and soil protection blanket is attached to the slope and fixed firmly; on a smooth rock slope, a cushion block is used for cushioning the water and soil protection blanket, and the thickness of the cushion block is designed spray-seeding thickness; 3. according to the characteristics of the side slope, the sprayed fiber base material uniformly sprays the mixture of the fiber for preventing erosion or improving soil, the organic base material and the seeds on the slope according to specific requirements, wherein the spraying thickness is not less than 10 cm; 4. after maintenance construction is finished, the slope surface must be maintained regularly, the maintenance contents comprise watering, fertilizing, reseeding, pest control and the like, after construction is finished for one month, vegetation growth conditions are comprehensively and generally checked, and reseeding are carried out on regions which are not obvious or uniform in growth or exposed to baldness.

Technical Field

The invention belongs to the field of water and soil protection, and particularly relates to a steep slope protection method based on a reinforced water and soil protection blanket.

Background

The main work of slope management is to carry out ecological regreening on the slope on the premise of ensuring the stability of the slope, clear away dangerous stones on the slope, descend the slope and cut the slope, form a cliff with steps as far as possible into horizontal steps, lower the slope of the slope to a safe angle so as to eliminate collapse hidden trouble, assist necessary engineering protection aiming at excavation slopes which are not suitable for plant growth or rock slopes which are seriously weathered and developed in a joint way and excavation slopes of broken (gravel) stone soil, and add ecological intercepting ditches in larger areas of the slope and catchment surfaces.

The traditional engineering support is commonly provided with a prestressed anchor cable frame, a concrete guniting slope protection, a diamond-shaped skeleton, an arched skeleton and the like, and a large number of large, wide and steep hardened surfaces are arranged on a slope, so that the road landscape is seriously influenced, the ecological harmony and the natural beauty are destroyed, and a series of environmental and engineering problems are generated.

If the method can satisfy the harmony and nature of landscape and ecology and simultaneously can give consideration to water and soil protection, environment and engineering construction, the problems can be solved easily.

The invention aims to provide a steep slope protection method of a reinforced water and soil protection blanket, which has the advantages of high safety performance, good water and soil protection effect, harmonious and natural landscape ecology, simple construction, high efficiency, low manufacturing cost, long protection period and no repair cost.

Disclosure of Invention

In order to solve the problems of low safety performance, poor water and soil protection effect, incapability of harmonious and natural landscape ecology, troublesome construction, low efficiency, high manufacturing cost, easy damage, short protection period, high repair cost and the like in the prior art, the invention adopts the following technical scheme:

the invention provides a steep slope protection method based on a reinforced water and soil protection blanket, which comprises the following steps: 1. 1.1, cleaning and leveling the slope surface before slope surface renovation: loose pumice and rock slag on the rock slope are removed. Processing a smooth rock surface; removing the barrier; filling the cavity with stones; cleaning and brushing or branch reinforcing the local unstable part of the side slope; 1.2, leveling the slope: the slope gradient is not greater than the design requirement, and the boulder raised in the whole hard rock is not cleaned; 2. the protective blanket should be laid from top to bottom. Firstly, the water and soil protective blanket on the top of the slope is fixed, and can be laid downwards. The length of the lap joint of the left and right sheets is 10cm, and the lap joint of the upper and lower sheets is 15 cm. And (3) adjusting the distance between the reinforced water and soil protection blanket and the slope (the water and soil protection blanket is generally positioned at the outer 1/4-outermost side of the designed spray-seeding thickness). The main anchor is mainly used at the top of a slope, lap joint or a main stressed position. Other locations use secondary anchors. The anchoring parts do not need to be arranged in order, and the reinforced water and soil protection blanket is favorably attached to the slope surface and firmly fixed; on a smooth rock slope, a cushion block is used for cushioning the water and soil protection blanket, and the thickness of the cushion block is designed spray-seeding thickness; 3. according to the characteristics of the side slope, the sprayed fiber base material uniformly sprays the mixture of the fiber for preventing erosion or improving soil, the organic base material and the seeds on the slope according to specific requirements, wherein the spraying thickness is not less than 10 cm; 4. after maintenance construction is finished, the slope surface must be maintained regularly, the maintenance contents comprise watering, fertilizing, reseeding, pest control and the like, after construction is finished for one month, vegetation growth conditions are comprehensively and generally checked, and reseeding are carried out on regions which are not obvious or uniform in growth or exposed to baldness.

The invention has the beneficial effects that: the reinforced water and soil protection blanket is laid on the side slope, seeds are sown on the reinforced water and soil protection blanket to grow vegetation and form a whole with the soil, the safety performance is high, the water and soil protection effect is good, the landscape is ecological, harmonious and natural, the construction is simple, the efficiency is high, the manufacturing cost is low, the protection period is long, and the repair cost is avoided.

Detailed Description

Preferred embodiments of the present invention are described in detail below.

A steep slope protection method based on a reinforced water and soil protection blanket comprises the following steps: 1. 1.1, cleaning and leveling the slope surface before slope surface renovation: loose pumice and rock slag on the rock slope are removed. Processing a smooth rock surface; removing the barrier; filling the cavity with stones; cleaning and brushing or branch reinforcing the local unstable part of the side slope; 1.2, leveling the slope: the slope gradient is not greater than the design requirement, and the boulder raised in the whole hard rock is not cleaned; 2. the protective blanket should be laid from top to bottom. Firstly, the water and soil protective blanket on the top of the slope is fixed, and can be laid downwards. The length of the lap joint of the left and right sheets is 10cm, and the lap joint of the upper and lower sheets is 15 cm. And (3) adjusting the distance between the reinforced water and soil protection blanket and the slope (the water and soil protection blanket is generally positioned at the outer 1/4-outermost side of the designed spray-seeding thickness). The main anchor is mainly used at the top of a slope, lap joint or a main stressed position. Other locations use secondary anchors. The anchoring parts do not need to be arranged in order, and the reinforced water and soil protection blanket is favorably attached to the slope surface and firmly fixed; on a smooth rock slope, a cushion block is used for cushioning the water and soil protection blanket, and the thickness of the cushion block is designed spray-seeding thickness; 3. according to the characteristics of the side slope, the sprayed fiber base material uniformly sprays the mixture of the fiber for preventing erosion or improving soil, the organic base material and the seeds on the slope according to specific requirements, wherein the spraying thickness is not less than 10 cm; 4. after maintenance construction is finished, the slope surface must be maintained regularly, the maintenance contents comprise watering, fertilizing, reseeding, pest control and the like, after construction is finished for one month, vegetation growth conditions are comprehensively and generally checked, and reseeding are carried out on regions which are not obvious or uniform in growth or exposed to baldness.

The reinforced water and soil protection blanket is a firm and open three-dimensional net cushion made of high-quality polyamide, and a high-toughness polyester geogrid is integrated into a three-dimensional nylon monofilament formed by hot melting and winding by adopting a breakthrough manufacturing process, so that a uniform three-dimensional structure is created. The combination of the high-strength tensile member (used for reinforcement in low strain) and the three-dimensional net pad (used for root winding) forms a clamping layer of soil and seeds on a steep slope, so that water and soil loss can be better controlled, and the slope can be stabilized.

The steep slope protection technology based on the reinforced water and soil protection blanket adopts the reinforced water and soil protection blanket to be mounted on the slope as a bearing layer according to the slope ratio and the height of the slope, and the high-modulus and high-strength geogrid added in the water and soil protection blanket is used as an additional tensile element to provide maximum fixing for soil and plant roots under low elongation. On the basis, aiming at the characteristics of the side slope, fiber base materials (containing seeds) are blended and sprayed on the reinforced water and soil protection blanket; the unique formula components in the fiber can provide initial nutrients for seeds, can improve the soil structure continuously, and provide an ideal growing environment for vegetation. The thickness of the soil for the side slope protection technology can reach 12cm, exceeds the thickness (average 8 cm) of the soil for all the side slope greening technologies in the past, provides a substrate for continuous growth of plants for subsequent growth, and is permanently fixed on the slope surface, so that good landscape and ecological effects are achieved.

Compared with the prior art, the steep slope protection technology based on the reinforced water and soil protection blanket and the construction method thereof provided by the invention have the following advantages:

1. the reinforced water and soil protection blanket is used as a bearing layer, and the open structure of the reinforced water and soil protection blanket generates friction with soil, so that the vegetation can bear light traffic, the sliding risk of soil particles on the side slope is reduced, and the reinforced water and soil protection blanket can be even used on the slope close to 3H: 1V.

2. The flexible structure of the reinforced water and soil protection blanket can adapt to the shape of a side slope well, and the requirement for slope cleaning is reduced. The fiber base material for hydraulic spray seeding is light and thin, so that the structure of the side slope structure cannot be influenced, and the requirements of engineering on the side slope structure are reduced.

3. The high-quality porous three-dimensional structure of the reinforced water and soil protection blanket can promote the vegetation to grow quickly and establish and optimize root entanglement so as to reinforce the lawn for a long time. Tests show that the turf planting capacity of the reinforced water and soil protection blanket is twice as high as that of a common water and soil protection blanket.

4. The reinforced water and soil protection blanket creates an artificial root system structure through high-density fiber filaments, the length of each square meter of the filaments reaches 2980 meters, and when vegetation is covered well, the reinforced water and soil protection blanket can resist the stress of 0.96 kN/square meter per square meter and can resist the water flow rate of 6.1m/s through tests.

5. The construction is convenient: the reinforced water and soil protection blanket is easy to operate, cut and lay, is easy to accept anchoring, soil and hydraulic fillers (such as fiber base materials and the like), and the thickness of a product is not influenced in the transportation and laying processes.

The above embodiments are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should be considered as not departing from the scope of the present invention.