Method for measuring ultimate heap capacity of building rubbish heaping slope

Abstract

The invention relates to a method for measuring the ultimate heap capacity of a building rubbish heaping slope. The method comprises the following steps that firstly, grading loading-increasing intensity of the heaping type slope and related slope body parameters are determined; secondly, the grading loading-increasing pressure distribution area and loading-increasing pressure values of the heaping slope are determined; thirdly, slope heaping displacement monitoring point distribution and layering heaping displacement change values are determined; fourthly, slope body heaping displacement modulus ratio parameters and stability criteria of the slope are determined; fifthly, the ultimate rock and soil heap capacity mcr of the slope body is determined; sixthly, the safety heap capacity mk of the slope body is determined. According to the method, a set of effective method for calculating the ultimate heap capacity of slope slippage slope body for evaluating the stability and accuracy of the slope is provided, and existing theoretical calculation system methods for landslides are supplemented. The method is reliable in design principle and has the advantages that the precision of calculation results is high, and implementation is easy; the cost is saved, the engineering applicability is high, and the application range is wide.

Description

technical field [0001] This paper relates to the fields of stability evaluation and landslide prevention of artificial construction waste-loaded slopes, and specifically relates to a method for determining the limit load capacity of construction waste-loaded slopes. Background technique [0002] In recent years, with the continuous expansion of transportation, water conservancy, energy, and urban infrastructure construction in a large number of urban areas in my country, a large amount of construction waste has been generated, and a large number of open spaces around towns have been used as construction waste dumps. As a result, different types of waste soil, waste rock slag and other artificial construction waste-loaded slopes have been formed, and the scale of the pile-loaded slopes has gradually increased, often resulting in artificial construction waste-loaded slopes. Geological disasters such as deformation, slippage and destruction have brought huge economic losses to li...

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Problems solved by technology

However, this type of method has extremely strict requirements on the boundary conditions of the landslide and the physical and mechanical parameters of the slope, and the established mechanical evaluation model is a static evaluation model without time factors, which cannot evaluate the change of slope stability over time, especially for buildings The waste-based slope has complex material composition, particle size and structure, which makes it difficult to determine its mechanical boundary conditions, and because of the disturbance effect of each load on the slope during the process of loading soil, resulting in The difficulty of obtaining mechanical evaluation parameters and the frequent changes of the most dangerous slip surface make it difficult to determine the effective soil mass area for heaping. These factors make this method have great limitations in the stability evaluation of this type of slope; displacement monitoring The method is an empirical statistical prediction method based on displacement observation curves and creep theory, which directly uses the change of displacement parameters to evaluate and predict the stability of landslides.

Although this landslide prediction method is simple and easy to operate, the parameters monitored and evaluated by all displacement monitoring methods are only displacement or displacement rate and its change law. With different loads, the deformation of the slope in each load cycle will also change. In particular, the slope displacement will increase sharply with the load, and it will also cause a sharp increase in the slope displacement. However, this displacement The sharp increase of displacement does not mean that the slope is about to lose stability, so only taking the change of displacement or displacement rate as the early warning criterion will often lead to misjudgment of prediction. Make accurate judgments and predictions

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