Ultrahigh-pressure hydraulic device integrating drilling, reaming and cutting

An ultra-high pressure, hydraulic technology, applied in the direction of earthwork drilling, discharge machinery, etc., can solve the problem of inability to realize the integration of drilling-reaming-slit, lack of anti-reflection means in hard coal seams, and poor anti-reflection effect of slots, etc. Problems, to achieve the effect of widely promoting the application value, the use effect is remarkable, and the effective scope of influence is improved

Active Publication Date: 2016-11-23
CHINA COAL TECH ENG GRP CHONGQING RES INST
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Problems solved by technology

Hydraulic reaming and high-pressure hydraulic slotting are widely used as pressure relief and anti-reflection measures, but the working pressure of existing hydraulic reaming and slotting devices is generally 30-50 MPa, which is not effective for hard coal seams with a firmness coefficient above 1.0. The anti-reflectio

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  • Ultrahigh-pressure hydraulic device integrating drilling, reaming and cutting
  • Ultrahigh-pressure hydraulic device integrating drilling, reaming and cutting
  • Ultrahigh-pressure hydraulic device integrating drilling, reaming and cutting

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[0019] figure 1 It is a structural schematic diagram of the present invention; figure 2 A schematic diagram of the drill bit structure; image 3 is a schematic diagram of the structure of the rotating water tail; Figure 4 It is a schematic diagram of the drill pipe structure; as shown in the figure: the ultra-high pressure hydraulic drilling, expansion and cutting integrated device of the present embodiment includes a drilling machine 1, a rotating water tail 4, a drill pipe 2, a rubber hose 5, a drill bit 3, a water pump 6, and a water tank 7 The drill pipe 2 is installed on the drill rig 1 and driven to rotate by the turning machine, the drill bit 3 is fixed on the front end of the drill pipe 2; the rubber hose 5 is connected to the rear end of the drill pipe 2 through the rotating tail 4; the water pump 6 is connected to the water tank 7 and the rubber hose 5 are used to supply water to the drill pipe 2 and the drill bit 3 through the rubber hose 5; multiple nozzles are...

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Abstract

The invention discloses an ultrahigh-pressure hydraulic device integrating drilling, reaming and cutting. The ultrahigh-pressure hydraulic device comprises a drilling machine, a rotary water tail, a drill pipe, a rubber pipe, a drill bit, a water pump and a water tank, wherein the drill pipe is mounted on the drilling machine and driven to rotate by a rotating machine, and the drill bit is fixed at the front end of the drill pipe; the rubber pipe is connected to the rear end of the drill pipe through the rotary water tail; the water pump is connected between the water tank and the rubber pipe and is used for supplying water into the drill pipe and the drill bit through the rubber pipe. The ultrahigh-pressure hydraulic device integrating drilling, reaming and cutting has the advantages that low-pressure drilling, medium-pressure reaming and high-pressure seam cutting are combined, drilling, reaming and seam cutting are integrated, coal free face is increased, coal internal fracture is increased, sufficient pressure relief and permeability increasing of coal are achieved, gas release difficulty is improved, the effective influence range of drilling is increased, gas extraction rate is increased evidently, extraction drilling construction quantity is reduced greatly, and the device is simple to operate, high in efficiency, evident in application effect and worthy of popularization and application.

Description

technical field [0001] The invention relates to the technical field of coal seam pressure relief and anti-reflection after drilling along the bedding or through the bedding of the mine, in particular to an ultra-high pressure hydraulic drilling, expanding and cutting integrated device. Background technique [0002] At present, coal still occupies an important proportion in my country's energy structure, and the development of the national economy still has a large demand for coal. High gas and coal and gas outburst mines are facing pressure to increase production. With the continuous increase of mining depth, more and more mines are transformed into high-gas and outburst mines. As a basic measure to prevent outburst and control gas, drilling gas drainage is widely used in high-gas and outburst mines. Drilling and pre-drainage, the drainage rate is mostly lower than 30%. In order to meet the drainage standard, most mines have the problems of long pre-drainage time and large a...

Claims

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Application Information

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IPC IPC(8): E21C37/12
CPCE21C37/12
Inventor 赵旭生张永将孟贤正陆占金曹建军徐遵玉李成成孙海涛刘军袁本庆
Owner CHINA COAL TECH ENG GRP CHONGQING RES INST
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