Multi-directional inclined combination type anchoring system for horizontal lamellar surrounding rock of tunnel and mounting method thereof
A thin-layered and combined technology, which is applied in mining equipment, earthwork drilling, bolt installation, etc., can solve the problems of endangering the life and property safety of construction personnel, increasing the safety risk of construction personnel, and increasing construction costs, etc.
Inactive Publication Date: 2012-09-19
张千管 +1
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Problems solved by technology
Landslides often bring serious safety hazards to the project, endanger the safety of construction workers, increase construction costs, and delay the construction period
At present, the conventional thinking for the treatment of horizontal thin-bedded surrounding rocks is to arrange bolts for anchorage, and to set the bolts in the direction of the vertical layer. At the same time, due to the instability of horizontal thin-bedded surrounding rocks, when drilling or anchoring , which will undoubtedly increase the safety risk of the construction personnel directly below, endangering the life and property safety of the construction personnel
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[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0026] 1. The multi-directional inclined combined anchorage system of the horizontal thin-bedded surrounding rock of the tunnel
[0027] The multi-directional inclined combined anchoring system of the horizontal thin-bedded surrounding rock of the tunnel uses multi-directional inclined combination to drive the anchor rod. The rods are driven in at an angle of 30° to the horizontal layer, including the tunnel vault anchor group and the tunnel arch waist anchor group. Such as figure 1 As shown, the construction personnel standing point Q is 0.85m away from the vault, and the horizontal distance between the construction personnel standing point Q and the anchor point X is 1m is safe. According to the sine and cosine theorem, it is calculated to drive the anchor rod A at an inclination angle of 30°.
[0028] Among them, the tunnel arch bolt gro...
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The invention discloses a multi-directional inclined combination type anchoring system for a horizontal lamellar surrounding rock of a tunnel and a mounting method thereof. The anchoring system comprises a tunnel vault anchor rod group and a tunnel haunch anchor rod group, wherein the tunnel vault anchor rod group is formed in the way that: anchor rods are arranged in a quincunx manner, a first anchor rod is upwards obliquely anchored in an anchored point at an inclined angle of 30 degrees along a face direction, meanwhile, after each anchor rod is anchored, a second anchor rod is anchored along a direction of a vertical layer; the tunnel haunch anchor rod group is formed in the way that: anchor rods are arranged in a quincunx manner, a first anchor rod is upwards obliquely anchored at an inclined angle of 30 degrees along a direction of a funnel central line, meanwhile, after each anchor rod is anchored, a second anchor rod is anchored along a direction of a vertical layer, and the residual anchor rods are placed in the same manner. The anchoring system, provided by the invention, can effectively reach an effect of reinforcing the horizontal lamellar surrounding rock by the conventional anchoring system.
Description
technical field [0001] The invention relates to the field of treatment of surrounding rocks in tunnel engineering construction, and mainly relates to anchoring horizontal thin-layered surrounding rocks through a multi-directional inclined combined anchoring system and a method for installing the system. Background technique [0002] In recent years, my country's highway construction has developed rapidly, and our country has a large population. Relevant departments are planning and improving the national highway network to meet the needs of people's travel and economic development. Due to the high technical index of the expressway alignment, when it enters a mountainous area or a heavy hilly area, it is inevitable to use a tunnel to cross the mountain. Therefore, in the construction of expressways in the mountainous areas of central and western my country, the proportion of tunnels is usually high, and the construction is difficult. With the continuous development of my cou...
Claims
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IPC IPC(8): E21D20/00E21D21/00
Inventor 张千管翁其能
Owner 张千管