Method for excavating cavern through arc-shaped drilling splitting method
A splitting method and arc-shaped technology, which is used in earth-moving drilling, discharging machinery, etc., can solve the problems of high safety risk, large environmental impact and high process cost, and achieves simple operation process, small excavation vibration, The effect of low security risk
Pending Publication Date: 2021-01-15
CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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Problems solved by technology
However, due to the strict management of civil explosives, their purchase, transportation, storage, and approval for use are complicated and time-consuming. The process costs are high and the safety risk is high; the vibration during blasting is large, which has a great impact on surrounding buildings, equipment, facilities, and the environment.
In order to solve the problems of complex approval, long time, high cost, high safety risk, and great impact on the surrounding environment, it is necessary to change this construction process and adopt a non-blasting method for construction
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[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0017] It should be noted that if there are directional indications used in the present invention, such as up, down, left, right, front, back, direction and orientation terms, it is to facilitate the description of the relative positional relationship between components, not for related components and components. The absolute position of the positional relationship refers only to explaining the relative positional relationship and movement conditions between the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. .
[0018] A method for excavating a cavern by a circular arc-shaped drilling and splitting method according to the present invention comprises the following steps:
[0019] The first step, drilling layout: set a central hole 1 at the bottom center of the rock wal...
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The invention discloses a method for excavating a cavern through an arc-shaped drilling and splitting method, and belongs to the technical field of cavern excavation construction. According to the provided method for excavating the cavern through the arc-shaped drilling and splitting method, non-blasting construction is not needed and operation is convenient. The method excavating the cavern comprises the following steps of Step 1, drilling arrangement: a central hole is formed in the central part of the bottom of a rock wall to be excavated in the cavern, a plurality of layers of distributionlines are sequentially distributed outwards at intervals in a diffusion mode with the center hole as the circle center, and a plurality of drilling positions are distributed at intervals along each layer of distribution lines; Step 2, drilling operation: drilling operation is conducted at each drilling position to form split holes; and Step 3, extruding, splitting and crushing: firstly, the center hole is drilled and excavated to form a free face, and then splitting and crushing operation is sequentially conducted on all the splitting holes in each layer from the center hole to the outside layer by layer. Civil blasting articles are not needed, work can be rapidly carried out, the cost is low, and the safety risk is small; and excavation vibration is small, and influences on existing surrounding structures, equipment and facilities are small.
Description
technical field [0001] The invention relates to the technical field of cavern excavation construction, in particular to a method for excavating a cavern by a circular arc-shaped drilling and splitting method. Background technique [0002] In the exploration and construction of geological exploratory wells, the drilling and blasting method is generally used, that is, firstly, the pneumatic drill is used to drill the holes except for the cut holes, and the hole diameter is generally less than 32mm, and then explosives are placed in the holes for blasting, causing the rock to be broken and then the broken rock mass will be broken. cleared to complete the excavation and excavation operation. However, due to the strict management of civilian explosives, their purchase, transportation, storage, and approval for use are complicated and time-consuming. The process costs are high and safety risks are high. The vibration during blasting is large, which has a great impact on surroundin...
Claims
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IPC IPC(8): E21C37/08
CPCE21C37/08
Inventor 陈爱民辛宗成
Owner CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE