Urban underground engineering strong karst water treatment construction method

Abstract

The invention relates to the technical field of underground station construction, and particularly relates to an urban underground engineering strong karst water treatment construction method. The method comprises the following steps that S1, construction preparation is carried out; S2, karst boundary judgment is carried out; S3, drilling detection is carried out, a drilled grouting hole is utilized, the lithology, the geological structure and the underground water condition information of a drilling passing area are observed during drilling, and stratum, geousness and joint crack characteristics are preliminarily obtained; S4, a potassium permanganate solution is used for detecting the waterway flow; S5, the height of a balanced water level water head is measured for a water burst point appearing in the foundation pit excavation process; S6, the deep foundation pit excavation water burst is blocked; and S7, a foundation pit deep hole waterproof curtain is constructed. The construction method is complete, clear and detailed in step, construction personnel can conveniently use the method, and the construction safety and the construction efficiency can be effectively improved. The method is mainly applied to the aspect of underground engineering strong karst water treatment construction.

Description

technical field [0001] The invention relates to the technical field of underground station construction, and more specifically, relates to a construction method for treating strong karst water in urban underground engineering. Background technique [0002] Nowadays, the construction of urban underground transportation is becoming more and more important. However, the construction of underground transportation will face various complex problems, especially in the construction of subways in cities with strong underground karst development. During the excavation, it was found that the karst pipelines are distributed in the shape of tree roots and branches, and the karsts are of different depths and sizes. The characteristics of different shapes and shapes have brought threats and hazards to engineering construction. The emergence of underground karst not only brings difficulties to engineering activities, but also creates new problems when karst is not treated properly. Conte...

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Problems solved by technology

However, the construction of underground transportation will face various complex problems, especially in the construction of subways in cities with strong underground karst development. During the excavation, it was found that the karst pipelines are distributed in the shape of tree roots and branches, and the karsts are of different depths and sizes. , The characteristics of different shapes have brought threats and harm to the engineering construction. The emergence of underground karst not only brings difficulties to engineering activities, but also creates new problems when the karst is not treated properly.

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