GB/T 32864-2016 in English
VALIDCode for investigation of landslide control engineering
- Issued on:2016-08-29
- Implemented on:2017-03-01
- File Format:PDF
- Delivery:Via email within 5 business days
$359.00
《GB/T 32864-2016滑坡防治工程勘查规范》由TC93（全国自然资源与国土空间规划标准化技术委员会）归口，主管部门为自然资源部(国土)。
Introduction
Analysis of the core content of the standard
| Exploration stage | Work objectives | Key technical requirements |
|---|---|---|
| Preliminary exploration | Feasibility study support | Main exploration line spacing 60-240m, sliding zone core sampling rate ≥90% |
| Detailed exploration | Basis for construction drawing design | Exploration points are encrypted to 20-60m, and large-scale in-situ direct shear tests are required |
| Supplementary exploration | Construction geological verification | Catalog of key project parts and geological records of the entire anti-slide pile shaft |
Landslide classification system
The standard adopts a multi-level classification method:
- By rock and soil type: divided into accumulation layer landslides (including 6 sub-categories such as loess and clay) and rock landslides (5 sub-categories such as bedding and cutting)
- By other factors: a matrix classification is established based on the thickness of the sliding body (shallow layer <10m to ultra-deep layer >50m), volume (small <100,000 m³ to giant ≥100 million m³), etc.
Key technology innovation
Dynamic exploration concept
The first information feedback method requires real-time feedback of monitoring data and geological information revealed during construction to correct the exploration conclusions. A three-dimensional monitoring system including surface displacement, deep displacement and pore water pressure is mandatory for first-level landslide projects.
Determination of sliding zone parameters
The comprehensive method of test-inversion-analogy is proposed: Large-scale landslides must undergo ≥2 sets of in-situ large-area direct shear tests (shear surface ≥2500cm²), combined with the inversion formula of the transfer coefficient method:
φ=arctg[(Fs∑W_i sinα_i -cL)/∑W_i cosα_i]
Project implementation suggestions
- Preliminary exploration should be carried out using non-disturbance exploration methods (such as high-density electrical method and ground penetrating radar)
- The depth of drilling holes in the anti-slide pile area into the sliding bed should be ≥1/2 of the sliding body thickness and not less than 5m
- Geological comparison maps before and after construction and analysis of changes in geotechnical parameters should be submitted at the completion stage
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