Device capable of conveniently drilling holes in fractured rock mass and drilling method thereof
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A rock mass, convenient technology, applied in the direction of drilling equipment and methods, earthwork drilling, drill pipe, etc., can solve the problems of difficult to meet high quality standards, low construction efficiency, inconvenient construction, etc., to save construction materials and increase construction time , time-saving effect
Active Publication Date: 2020-04-24
NORTH CHINA ENG INVESTIGATION INST
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[0004] The purpose of the present invention is to provide a convenient device for drilling in broken rock mass and its drilling method, which can effectively solve the problem of drill stuck and buried drill caused by hole collapse when drilling in loose and broken rock in the prior art. Accidents, low construction efficiency, complex construction, high cost, inconvenient construction, difficulty in reaching high-quality standards and low efficiency in the existing technology
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specific Embodiment approach
[0045] As a specific embodiment provided by the present invention, preferably, the locking mechanism includes 2 sets, and each set includes 2 fixing rods 3, and 2 screw rods 8 and nuts 9 connect the 2 screw rods 8 and 9 through the screw holes on the fixing rod 3. The small semicircular chuck 2 is locked.
[0046] As a specific embodiment provided by the present invention, preferably, the two fixing rods 3 are respectively welded to the two small semicircular chucks 2 .
[0047] As a specific embodiment provided by the present invention, preferably, the rotation limiting protrusion 5 and the axial limiting protrusion 6 form a set of limiting structures, and more than two sets of upper limiting structures are arranged on the drill pipe 1 .
[0048] As a specific implementation mode provided by the present invention, it will be described in detail below.
[0049] The invention is suitable for follow-up of wall casing when drilling in broken rock body, prevents surrounding rock ...
Embodiment 1
[0059] Embodiment 1: as a kind of specific embodiment provided by the present invention, a kind of method for the device drilling that facilitates drilling in broken rock mass as described above is characterized in that, comprises the following steps:
[0060] Step 001: The drilling rig is in place, and the drill pipe assembly with follow-up wall casing is installed;
[0061] Step 002: While opening a hole in the broken rock mass, the wall casing is pushed up by the shoulder at the hole, and the wall is drilled;
[0062] Step 003: When the wall casing follows up to the hole, lift the drill pipe and drill bit out of the hole, and connect the wall casing and drill pipe length;
[0063] Step 004: Continue to drill holes, and the retaining casing continues to follow the retaining wall until it penetrates the broken rock mass and drills to a complete rock mass;
[0064] Step 005: Lift the drill pipe, remove the drill pipe assembly and eccentric drill bit with follow-up wall casing...
Embodiment 2
[0065] Embodiment 2: A method of drilling in a broken rock body. The difference from Embodiment 1 is that the hole is drilled at a complete slope.
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Abstract
The invention provides a device capable of conveniently drilling holes in fractured rock mass and a drilling method thereof, and relates to the technical field of fractured rock mass drilling. The device comprises a drilling machine and a drill rod assembly provided with a protection casing follow-up device; the protection casing follow-up device is fixed to a drill rod through a lock fixing mechanism, the front end of the protection casing follow-up device is provided with a shoulder, and a protection casing is installed on the shoulder in a sleeving mode and can be in rotary fit with the shoulder; and the periphery of the interior of the protection casing follow-up device is provided with a plurality of through slag removal holes in the axial direction. According to the device, the problems that in the prior art, when the interior of loosened fractured rock is subjected to drilling operation, hole collapse is prone to occurring, thus, drill clamping and drill burying accidents are caused, the construction efficiency is low, in addition, in the prior art, construction is complex, the cost is high, construction is inconvenient, and the efficiency is low can be effectively solved; the device has the advantages of being high in construction quality and construction efficiency, safe and convenient to use and the like; and the device can be widely suitable for drilling of loosenedfragile rock mass, and especially suitable for drilling and casing following up inside the rock mass of which only the surface layer is loosened and broken.
Description
technical field [0001] The invention relates to the technical field of drilling, and is particularly suitable for drilling in broken rock bodies, especially for drilling only surface broken rock bodies. Background technique [0002] In recent years, my country's economy has developed rapidly, forming a huge number of artificial high slopes with large angles. The rock mass is continuously broken and weathered under the action of nature and artificial activities, and a thick layer of loose broken bodies is formed to cover the surface of the sliding slope. Drilling operations are required for reinforcement construction of similar slopes, but drilling operations in loose and broken bodies are prone to hole collapse, resulting in drill stuck and buried drill accidents. The construction efficiency is low, which seriously affects the construction quality and construction progress, threatening The safety of construction personnel has brought challenges to the construction process. ...
Claims
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Application Information
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