Water exploration drilling construction method applied to large-dip-angle loose coal seam
A construction method and a technology with a large inclination angle, which are applied in drilling equipment and methods, drilling equipment, earthwork drilling, etc. The effect of reducing construction costs, significant social benefits, and shortening drilling construction time
Inactive Publication Date: 2018-08-07
SICHUAN CHUANMEI HUARONG ENERGY CO LTD
View PDF6 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, for coal seams with loose coal seams and relatively low Platts hardness coefficients, this drilling method not only has a slow drilling speed, but also is very easy to collapse the hole, resulting in a very low hole formation rate and high cost, resulting in The level of excavation is low
At present, there is no method in the market for the construction of drilling holes for water exploration and drainage in loose coal seams with large dip angles
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0013] The coal seam structure of the working face applied by the present invention is relatively simple, belongs to relatively stable coal seam, the total thickness of the coal seam is 0.48-1.51m, the average thickness is 1.28m, the coal seam utilization thickness is 0.45m-1.34m, the average is 1.09m, and the coal seam is extremely loose; 1~3 layers of gangue, the thickness of gangue is 0.03m~0.54m, the average thickness is 0.19m, and the lithology is carbonaceous mudstone, mudstone, silty mudstone and silty mudstone with coal line. The characteristics of the surrounding rock are: the immediate top of the coal seam is siltstone, and the argillaceous siltstone is sandwiched with the coal line; the old top is siltstone; the immediate bottom is siltstone and coal seam, and the old bottom is siltstone. The upper part of the working face is a goaf, and there may be water accumulation. Because the coal seam is extremely loose, it is extremely difficult to construct the drilling hole...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to the field of water exploration drilling construction methods applied to loose coal seams, in particular to a water exploration drilling construction method applied to a large-dip-angle loose coal seam, which meets a designed drilling hole length requirement, shortens the drilling construction time, and greatly reduces the construction cost. The water exploration drilling construction method comprises the following steps: a, at first, in tunneling construction, a drill site used for drilling construction is constructed as a later-period drilling foundation; b, a drilling machine is mounted in the drill site, and is stabilized by using four pressing columns and two lateral supporting columns; c, after the drilling machine is mounted, at first, a first hole is drilledalong the coal seam direction and a slope, the drilling lengths of the rest of other holes are determined according to the drilling construction condition of the first hole, and then the rest of other holes are drilled in sequence; and d, when the drilling construction is completed, the drilling machine is moved out from the drill site. The drilling construction method has the advantages of greatly reducing the construction cost and creating good economic benefits. The drilling construction method is particularly suitable for water exploration drilling construction applied to loose coal seam.
Description
technical field [0001] The invention relates to the field of drilling construction methods for exploring and discharging water in loose coal seams, in particular to a construction method for drilling holes for detecting and releasing water in loose coal seams with large dip angles. Background technique [0002] In order to reduce drilling construction costs, reduce labor costs, drill bit loss and power loss, and improve construction progress, etc., the water exploration and discharge drilling construction is basically arranged in the roadway coal body. This kind of water exploration and discharge drilling construction has a relatively high Platinum hardness coefficient. The coal seam drilling construction is very successful, not only the drilling construction progress is fast but also the hole forming rate is very high. However, for coal seams with loose coal seams and relatively low Platts hardness coefficients, this drilling method not only has a slow drilling speed, but a...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/00
CPCE21B7/00
Inventor 胡仲国李虎张涛
Owner SICHUAN CHUANMEI HUARONG ENERGY CO LTD