Mining method tunnel portal slope construction platform structure and construction method thereof

Abstract

The invention discloses a mining method tunnel portal slope construction platform structure and a construction method thereof, and belongs to the field of mine tunnel construction. The mining method tunnel portal slope construction platform structure comprises a first-stage construction platform, a second-stage construction platform, at least one first-stage third-stage construction platform and a tunnel portal construction platform which are connected end to end from bottom to top and are sequentially arranged on a slope in a supported mode; a trapezoidal slope is built at the bottom of the slope, and a tunnel portal to be formed is located at the top of the slope. The first-stage construction platform is arranged on the whole slope and corresponds to the to-be-constructed position of the first-stage construction platform, and a first-stage construction platform slope is arranged. The first-stage construction platform comprises a row of first-stage small anti-slide piles which are transversely and uniformly buried at the slope toe position of the slope of the first-stage construction platform at intervals. According to the mining method tunnel portal slope construction platform structure and the construction method thereof, the problems that according to an existing platform building method, all grading step slope treatment construction methods are greatly different, slope reinforcement greatly reforms the original slope ecology, steep rock slope condition construction cannot be met, and the requirements of large section, double lines and one-way hole entering cannot be met is solved.

Description

Technical field [0001] The present invention belongs to the field of mine tunnel construction, in particular, to a structure of a mine method tunnel hole slope construction platform structure and its construction method. Background technique [0002] Transportation within the infrastructure is the cornerstone of national economic operation, material distribution and strategic security, roads and railways in traffic are main contents of land Unicom. The most important factors affecting the road and railway are the characteristics of terrain and landform. Special my country's generally presents 2 / 3 of the mountain area than the total area of ​​land. The terrain is highly undulating, even if there is a hills and low mountains, therefore, the construction of tunnels Refer to normal. The construction of the tunnel hole is the key and difficulty of tunnel construction. The construction process of the hole must involve the stability of the slope. [0003] According to the stress state o...

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Problems solved by technology

[0009] The purpose of the present invention is to provide a construction platform structure and construction method for the side slope at the entrance of the mine tunnel, to solve the problem that the existing platform construction methods have large differences in the treatment methods of the slopes with different graded steps, and the slope reinforcement has a great impact on the ecological transformation of the original slope. Large, unable to meet the conditions of steep rock slope construction, unable to meet the requirements of large cross-section, double-line and one-way entry

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