High-efficiency groove-forming construction method for underground diaphragm wall in slightly weathered granite

Abstract

The invention provides an efficient grooving construction method for an underground diaphragm wall in micro-weathered granite. The method specifically comprises the following steps: 1, geologically surveying the construction site; 2, determining the rock breaking method; 3, determining blasting parameters; 4, drilling holes from a sand layer to the surface of a rock layer, and unearthing; 5, distinguishing a rock sample, and then determining and drilling to reach intermediately-weathered granite; 5, feeding a PVC (Polyvinyl Chloride) pipe for protecting a blasting lead; 7, drilling hole in the rock layer until reaching depth 1m more than the design burial depth; 8, feeding explosive and blasting. With the adoption of the efficient grooving construction method for the underground diaphragm wall in the micro-weathered granite, the defects and shortcomings like difficult construction in the micro-weathered granite or slow construction progress, and poor grooving quality of the existing construction method of covering sand the micro-weathered granite can be overcome; the efficient, high-precision and deep-rock-embedding grooving construction in the micro-weathered granite is realized; the method has a good effect and fast to groove.

Description

technical field [0001] The invention relates to a construction technology in the fields of construction, water conservancy, transportation, environment and other underground engineering, in particular to an efficient groove-forming construction method for an underground continuous wall in slightly weathered granite. Background technique [0002] Major cities across the country are building urban underground railways and various underground spaces on a large scale. These underground space structures need to be constructed by excavating foundation pits, and underground diaphragm walls are required as temporary structures for retaining soil and water during excavation of foundation pits. Due to the different geological conditions and surrounding environments of each city, it is necessary to build underground diaphragm walls under various geological conditions. The construction technology of underground diaphragm wall has been widely used in my country's natural sedimentary san...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects in the prior art, the object of the present invention is to provide a highly efficient trench-forming construction method for underground diaphragm walls in slightly weathered granite, which overcomes the problems of poor construction quality, long construction period and even inability to Shortcomings and deficiencies such as trough forming, realize efficient trough forming construction in slightly weathered granite

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