Discriminating method for utilization of tunnel waste slag as building material aggregate

A discrimination method and tunnel technology, applied in the direction of material inspection products, soil material testing, sustainable waste treatment, etc., can solve the problems of fragmented analysis techniques, index methods that are difficult to adapt to railway engineering, and difficult engineering design, etc., so as to reduce survey and Design workload, improve the utilization rate of waste slag, and reduce the effect of environmental impact

Active Publication Date: 2020-11-20
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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Problems solved by technology

Although there are precedents in water conservancy and highway engineering that mainly use experimental analysis methods to use waste slag as building materials and aggregates, due to i...

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  • Discriminating method for utilization of tunnel waste slag as building material aggregate
  • Discriminating method for utilization of tunnel waste slag as building material aggregate
  • Discriminating method for utilization of tunnel waste slag as building material aggregate

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Embodiment Construction

[0036] In order to more clearly understand the above objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, in the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0037] In the following description, many specific details are set forth in order to fully understand the present disclosure, but the present disclosure can also be implemented in other ways than described here; obviously, the embodiments in the description are only some of the embodiments of the present disclosure, and Not all examples.

[0038] At present, there are two main ways of thinking about the utilization of tunnel spoil:

[0039] One is the earth and rock filling used in roadbeds and station yards. However, at present, high-speed railways, especially mountainous railways in the west and southwest, have a bridge-tunnel r...

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Abstract

The invention relates to a discriminating method for utilization of tunnel waste slag as building material aggregate. The method comprises the following steps of: acquiring a first tunnel rock samplealong a railway to be constructed; performing a rock sample test on the first tunnel rock sample to obtain geological mapping data and a surrounding rock grade, the geological mapping data including engineering geological characteristics, structural characteristics, a complete state and surrounding rock stability; preliminarily determining an available surrounding rock target range based on the geological mapping data and the surrounding rock grade; sampling the surrounding rock in the target range to obtain a second tunnel rock sample; and based on the mother rock strength, the alkali activity, the stone powder content and the crushing index of the second tunnel rock sample, determining tunnel waste slag capable of being used as building material aggregate. The technical scheme of the embodiment of the invention is suitable for the early-stage design stage of railway engineering, the design quality and accuracy are improved, the waste slag utilization rate is increased, and the influence of railway construction on the environment is reduced.

Description

technical field [0001] The present disclosure relates to the technical field of railway construction, and in particular to a method for identifying the use of tunnel waste slag as building material aggregate. Background technique [0002] Sand and gravel aggregate is the most important and most used building material for high-speed railway construction. Traditional sand and gravel materials mainly come from river and lake sand mining and mine quarrying processing, which will cause damage to the ecology of rivers and lakes and the ecological environment of mountainous areas; in addition, tunnels in high-speed railway construction Excavation also produces a large amount of spoil, and transportation and centralized stacking have problems of polluting the environment and occupying land. The construction of high-speed railways is facing the comprehensive problem of shortage of sand and gravel aggregates and comprehensive treatment of waste slag. It is urgent to change the design ...

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Application Information

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IPC IPC(8): G01N33/24G01N1/08C04B18/16
CPCG01N33/24G01N1/08C04B18/16Y02W30/91
Inventor 朱欢乐杨国庆司天文刘孟山胡国荣孙长江米振宇李伟雷贺彩刘少飞焦亚锋
Owner CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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