Soil nailing wall construction method for pre-reinforcing side slope rock-soil body
A construction method and technology of rock and soil mass, applied in excavation, sheet pile wall, foundation structure engineering, etc., can solve the problem that the temporary stability is difficult to be guaranteed during the construction of the slope, the stability is difficult to be guaranteed, the stability of the slope is difficult to be guaranteed, etc. problems, to achieve the effect of facilitating mixed flow operations, avoiding the phenomenon of nesting, and avoiding segmented excavation
A construction method and technology of rock and soil mass, applied in excavation, sheet pile wall, foundation structure engineering, etc., can solve the problem that the temporary stability is difficult to be guaranteed during the construction of the slope, the stability is difficult to be guaranteed, the stability of the slope is difficult to be guaranteed, etc. problems, to achieve the effect of facilitating mixed flow operations, avoiding the phenomenon of nesting, and avoiding segmented excavation
CN114032928AActive Publication Date: 2022-02-11NANHUA UNIV
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[0035] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0036] A soil nail wall construction method for pre-reinforced slope rock and soil, comprising the following steps:
[0037] Step 1. Clean up the existing slope vegetation and topsoil layer and measure the setting-out; clean the vegetation and surface loose rock and soil on the current slope from top to bottom, so that the current slope surface exposes solid rock and soil layer. Then measure the setting-out line on the current slope and release the drill hole position. After the excavation rock and soil are excavated in layers, the horizontal and vertical spacing of the drill holes on the designed slope should be about 0.75m to 2m;
[0038] St...
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The invention discloses a soil nailing wall construction method for pre-reinforcing a side slope rock-soil body, which comprises the following steps of: firstly, vertical layered horizontal running water construction is performed on a current side slope surface, holes are drilled in the side slope rock-soil body according to a certain angle, and the drilled holes penetrate through the to be excavated rock-soil body and enter a preset depth in the designed side slope rock-soil body through the designed side slope surface of the side slope; then, soil nails are inserted into the drilling section in the designed side slope rock-soil body from a current side slope surface hole opening following the drilling, and the drilling section provided with the soil nails is grouted and maintained to be strong; and finally, the rock-soil body to be excavated is excavated through layered horizontal running water construction according to the sequence from top to bottom, the designed slope surface of the slope is exposed in a layered mode, slope surface net hanging and concrete spraying operation is completed, and the process is repeatedly circulated to achieve vertical running water construction till the soil nailing wall supporting construction is completed after the first-stage slope is excavated in a layered mode. The temporary stability of the designed slope surface after layered excavation can be guaranteed, vertical flow construction and horizontal flow construction can be conveniently carried out at the same time, the construction efficiency is improved, and the phenomenon of idling of the construction site is avoided.
Description
technical field [0001] The invention relates to the technical field of slope reinforcement, in particular to a soil nailing wall construction method for pre-reinforced slope rock and soil mass. Background technique [0002] Soil Nailing Wall (Soil Nailing Wall) is a kind of in-situ rock-soil mass reinforced by high-strength materials such as steel bars, thereby improving the "visual cohesion" and strength of the in-situ rock-soil mass, making soil nails and shotcrete surfaces The in-situ soil reinforcement technology of "gravity-seeking retaining wall" formed by the layer and the reinforced rock-soil mass is very different from the original rock-soil mass, and is widely used in slope and foundation pit reinforcement projects. [0003] At present, the drilling and grouting type soil nails are mainly used in the reinforcement and treatment of slopes and foundation pit soil nail walls in my country. The soil nail wall shall be constructed according to the principle of "top-dow...
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Patent Timeline
11 Feb 2022
Publication
CN114032928A
- IPC
- E02D17/20; E02D5/76; E02D15/04
- CPC
- E02D17/20; E02D5/76; E02D15/04; Y02A10/23
- Inventors
- 樊军伟; 杨仕教