Method for microwave treatment of red-layer roadbed filler

Abstract

The invention discloses a method for the microwave treatment of a red-layer roadbed filler and belongs to the field of road engineering roadbed filler treatment. A filler input port, a conveyor belt lateral baffle, a conveyor belt rotating motor, a non-wave-absorbing conveyor belt, an input port smoothing filler baffle, a microwave equipment box body, crushing equipment, a bearing rack, a filler output port, a microwave suppressor, a magnetron, a power control system and the like are included. According to the method, the roadbed filler is conveyed through a conveying belt and dried in the microwave box body, the moisture content of the filler is rapidly reduced, the water stability of the red-layer filler is improved, and finally, the high-quality roadbed filler with the small particle size and the moisture content meeting the requirement is obtained. The method is simple and novel in principle, high in engineering application value and capable of improving the performance of the red-layer roadbed filler.

Description

technical field [0001] The invention relates to the field of road engineering subgrade filler treatment, in particular to the principle and method of using microwaves to treat red bed subgrade filler. Background technique [0002] Sichuan Province, as the economic center of western my country, in terms of expressway planning, the total scale of Sichuan expressway planning routes from 2019 to 2035 will reach about 16,100 kilometers, an increase of 4,100 kilometers compared with the plan in 2014, and the planned number of inter-provincial entrances and exits will reach 63. There are 29 planned routes. In terms of railway planning, seize the opportunity of the construction of the Chengdu-Chongqing economic circle. The projects planned to start construction in 2020 include the Xining-Chengdu Railway, the Chengnan-Dawan High-speed Railway, the Dujiangyan-Siguniangshan Mountain Rail Transit, and the Longhuang-Huangzhou Railway. The capacity expansion of the Syrian section and the ...

AI Technical Summary

Problems solved by technology

As a common weak rock mass, red bed rock mass is widely distributed in the Sichuan Basin and its marginal areas. The red bed rock mass in Sichuan is about 165,000 km 2 , accounting for about 34% of the total area of ​​Sichuan. It is easy to disintegrate, easy to weather, and easy to soften when exposed to water. The red bed rock mass is an inevitable rock and soil mass in infrastructure construction in Sichuan. The use of fillers, under the action of high-fill embankment loads and train dynamic loads, not only will produce vertical settlement, but also prone to lateral slippage of basement instability, which will eventually cause engineering hidden dangers and even endanger life safety

Therefore, when building roads and railways in some areas of Sichuan, it is very difficult to obtain high-quality subgrade fillers with good grading. There are mainly two ways to obtain them. One is to use long-distance transportation and stone factory purchases to ensure the filler Reliability, but the transportation cost is high and the construction period is long, so it is rarely used; the second is to add lime, cement, polyaluminum chloride, fiber and other materials to treat the red layer filler on site before using it. However, in the process of processing, in order to reduce the moisture content, these fillers need to be repeatedly turned and dried and crushed. As far as turning and drying is concerned, there are many uncertainties, such as being easily affected by weather conditions, and the processing time is relatively long. Low; in order to ensure the effect of tumbling, it needs to be continuously broken; the moisture content of the surface soil decreases after being turned and dried, but the moisture content of the lower layer is still high

At the same time, many patents on the design and preparation of roadbed fillers have clarified the importance of turning over and drying, but have not considered the influence of uncertain factors such as weather. For example, the application document CN110593036A discloses a method of using high water content engineering The method of preparing roadbed filler from spoil, which mentions the use of sunlight and air drying to reduce the moisture content of spoil, but does not take into account a series of uncertain factors such as bad weather conditions and long processing time

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