Introduction of slope collapse treatment?

Speaking of slope collapse treatment, what are the main reasons for slope collapse in China at this stage? What are the treatment methods for slope collapse? The following is the content of slope collapse treatment compiled by Bian Xiaozhongda Consulting Company, and the basic situation is as follows:

In order to help the staff of construction enterprises understand the slope collapse, Zhong Da Consulting combed the encyclopedia of architecture in the column of architectural knowledge, and sorted out the relevant contents of slope collapse. The basic situation is as follows:

Landslide refers to the natural phenomenon that buildings, mountains, roads and mines collapse and fall without artificial natural forces. Most of them are due to poor stratum structure, rain erosion or construction defects, steep slopes or tunnels beside roads and dams, and the top of the tunnel suddenly collapses.

In order to help the construction enterprise personnel understand the main situation of slope collapse treatment, the construction network combed the relevant information through the architectural knowledge column, and the reasons for the formation of slope collapse are as follows:

(1) The slope is too steep, and the soil on the slope is unstable due to its own weight or accumulated water on the surface, resulting in collapse or slump.

(2) The turf, silt and loose soil at the toe of the slope are not cleaned, and the joint with the original steep slope is not dug into a ladder lap, and the soil material is filled with unqualified soil materials such as silt soil.

(3) Slope fill is not compacted in layers as required, with poor compactness, low cohesion and insufficient stability.

(4) No drainage measures are taken at the top and toe of the slope, and the cohesion of the soil is reduced due to the infiltration of water, or the toe of the slope is washed out, resulting in landslides.

Common preventive measures are as follows:

(1) The gradient of permanent fill shall be set according to the height of fill, soil type and engineering importance. For the slope gradient of long-term temporary fill, 1: 1.5 can be used when the fill height is within 10 m, and the settlement preservation degree of this plane exceeds 10 m, so it can be made into a zigzag shape, and the upper part is1:1.

(3) Fill with soil materials that meet the requirements, and avoid using humus soil and unbroken bulk soil as slope fillers. Slope construction shall be horizontally backfilled, rolled or compacted in layers according to the compaction standard of fill. When mechanical rolling is used, attention should be paid to ensuring the compaction quality of the edge; For the fill that does not need to be trimmed, the slope should be filled with a width of 0.5m. For the fill that needs to compact the whole slope, the width can be 0. 2m。 Parts that cannot be compacted by machinery shall be equipped with small machinery and manual compaction. A 1: 2 stepped slope should be built at the ups and downs of the fill site. When filling in sections, the joints of each layer should be in the slope shape of 1: 1.5 to prove the bonding quality.

(4) Under harsh climatic, hydrological and geological conditions, clay, silt, fine sand, easily weathered rock slopes and gentle loess slopes should be protected immediately after the construction is completed. The filling and paving surface should be leveled in advance, fully compacted and compacted, and the depressions should be filled and compacted. Slope protection methods According to the types and requirements of slope soil, mortar masonry or dry masonry, turf laying, shotcreting, plastering and other measures are selected. Among them, it is more economical and easy to lay turf, which is not limited by the height of the slope, and the slope can be slightly steep.

(5) Cover the side surface and drain well at the lower part to avoid water accumulation in the range that affects the slope stability.

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