Roadway tunneling efficient rock breaking method based on ultrasonic vibration pre-slotting

An ultrasonic and rock-breaking technology, which is applied in the field of high-efficiency rock-breaking in roadway excavation based on ultrasonic vibration pre-cutting, can solve problems such as no ultrasonic waves, and achieve the effects of improving rock-breaking efficiency, high footage, and saving consumable materials
CN112610223AActive Publication Date: 2021-04-06CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Publication Date
2021-04-06

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Abstract

The invention belongs to the field of roadway tunneling rock efficient breaking, and particularly relates to a roadway tunneling efficient rock breaking method based on ultrasonic vibration pre-slotting. In order to solve the problem of efficient breaking of hard rock, during hard rock roadway tunneling, the advantages of good ultrasonic directivity, energy concentration and the like are utilized; firstly, ultrasonic vibration equipment is adopted to vibrate and impact a rock mass in a target area, internal cracks are promoted to rapidly expand and rapidly reach breaking, and pre-slotting is achieved; and in combination with optimized arrangement of auxiliary holes and peripheral holes, the efficient breaking of rock is achieved. The method provided by the invention has the advantages that the slotting range and depth can be controlled by adjusting the ultrasonic frequency and power; the time of work procedures such as hole drilling and explosive charging can be effectively reduced; explosives are saved; the tunneling cost is reduced; and the method can be widely applied to rapid tunneling of roadways in hard rock engineering.
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Description

technical field

[0001] The invention relates to the field of engineering construction such as high-efficiency rock crushing and fast roadway excavation, and specifically relates to an efficient rock-breaking method for roadway excavation based on ultrasonic vibration pre-cutting. Background technique

[0002] With the increase of mining intensity, coal mines gradually enter into deep mining. Underground rock engineering construction generally faces problems such as hard rock crushing, low drilling efficiency, slow hole forming speed, and large loss of equipment and materials. The high efficiency of rock, especially hard rock Breaking has a great influence on the construction progress. In view of the problems and requirements faced by hard rock breaking and rapid excavation, it is particularly urgent and important to invent new rock breaking methods.

[0003] At present, most of the excavation by drilling and blasting still uses explosives to blast rocks for excavation. When ...

Claims

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