Construction method for coal mine ground drilling accurate tunnel penetration
阅读说明：本技术 一种煤矿地面钻孔精准透巷的施工方法 (Construction method for coal mine ground drilling accurate tunnel penetration ) 是由 李川 刘继千 陈卡 范传征 张思伟 席二宣 张亚伟 王聪 孙明利 于 2020-07-10 设计创作，主要内容包括：本发明公开一种煤矿地面钻孔精准透巷的施工方法,属于煤矿的开采领域,包括了透巷钻孔的结构设计和透巷主要施工方法,通过设计三开钻孔结构,三次开孔,利用无线测斜仪器和数值模拟技术对钻孔进行实时监测,并对钻孔轨迹进行不断地修正,使得钻孔的最终落点到达巷道的目标位置,实现了精准透巷的目的,能够满足煤矿地面工程钻孔或者煤矿求援孔的一次性精准透巷,并且保证钻孔钻具安全的要求。(The invention discloses a construction method for accurately penetrating a coal mine ground drilled hole, which belongs to the field of coal mine mining and comprises a structural design of a penetrated drilled hole and a main construction method for penetrating the penetrated hole.)
1. A construction method for accurately penetrating a tunnel by drilling on the ground of a coal mine comprises the ground (1) and the tunnel (2), and is characterized by comprising the following steps:
s01: arranging the position of a ground (1) borehole;
s02: determining coordinates of the underground roadway (2) by using a numerical simulation technology, designing a roadway-penetrating track route, and establishing a roadway-penetrating simulation diagram;
s03: carrying out first drilling, drilling a first opening hole (11) downwards, drilling the bottom end of the first opening hole (11) at least 20m below a basement rock surface (3), measuring three parameters of a hole body of the first opening hole (11), namely hole depth, hole inclination and direction after construction is finished, measuring an azimuth angle (namely a magnetic azimuth angle) by using a magnetic inclinometer, correcting the magnetic azimuth angle to be a true azimuth angle, and correcting the magnetic declination angle of three measured parameter data of the hole body of the first opening hole (11);
s04: a first wall protection sleeve (15) is lowered into the first opening (11), the first wall protection sleeve (15) and the first opening (11) are coaxially placed, the first wall protection sleeve (15) is hung at the opening of the first opening (11) and is at least 0.5m higher than the ground (1), the diameter of the first wall protection sleeve (15) is at least 50mm smaller than that of the first opening (11), cement slurry (14) is injected between the outer wall of the first wall protection sleeve (15) and the inner wall of the first opening (11) after the first wall protection sleeve (15) is placed, and the first wall protection sleeve (15) is sealed by cement;
s05: carrying out secondary drilling by taking the bottom end and the axle center of the first opening (11) as references, drilling a second opening (12) downwards, wherein the diameter of the second opening (12) is smaller than that of the first protective wall casing (15), the distance between the bottom end of the second opening (12) and the top plate of the roadway (2) is not more than 20m, simulating a drilling track by using a linear drilling inclinometer and a numerical simulation technology in the secondary drilling process, and continuously correcting the drilling track;
s06: after the second drilling construction is finished, re-testing and checking the drilled track of the second drilling by using a magnetic inclinometer;
s07: a second retaining wall casing pipe (17) is lowered into the second opening (12), the second retaining wall casing pipe (17) and the second opening (12) are coaxially placed, the second retaining wall casing pipe (17) is hung at the opening of the second opening (12) and is at least 0.5m higher than the ground (1), the diameter of the second retaining wall casing pipe (17) is at least 10mm smaller than that of the second opening, cement slurry (14) is injected between the outer wall of the second retaining wall casing pipe (17) and the inner wall of the second opening (12) after the second retaining wall casing pipe (17) is placed, and the second retaining wall casing pipe (17) is sealed by cement;
s08: and (3) carrying out third drilling by taking the hole bottom of the second opening hole (12) as a reference, wherein a third opening hole (13) is drilled downwards, the diameter of the third opening hole (13) is smaller than that of the second protective wall sleeve (17), and the third drilling is carried out from the bottom end of the second opening hole (12) to the bottom plate of the roadway (2).
2. The method for constructing the precise through roadway for the coal mine ground drilling according to claim 1, wherein the first drilling in the S03 is carried out by using a conventional drilling tool.
3. The method for constructing the precise through roadway for the ground drilling of the coal mine according to claim 1, wherein the second drilling in the S05 is performed by directional drilling by using a screw drill.
4. The method for constructing the precise through roadway for the coal mine ground drilling according to claim 1, wherein the third drilling in the S08 is carried out by using a conventional drilling tool.
5. The construction method for the precise through roadway for the coal mine ground drilling according to claim 1, wherein the S05 comprises the following specific steps:
in the second drilling process, the wireless inclination measurement while drilling instrument is installed on the drilling tool, the data such as the well inclination and the direction of the drilling tool are measured through the wireless inclination measurement while drilling instrument, the measured data signals are transmitted to the ground computer through the wireless inclination measurement while drilling instrument, the ground computer converts the received data signals into the position coordinates of the drilling tool, and the track of the second drilling is accurately calculated through a numerical simulation technology according to the position coordinates of the drilling tool;
according to the track of the second drilling, the position relation between the hole bottom position of the second open hole (12) and the top plate of the roadway (2) is simulated and analyzed, data prediction is carried out, and the real-time design track of the second drilling is simulated according to the predicted data calculation;
and according to the designed real-time track of the second drilling, monitoring the track of the second drilling in real time by using a computer, controlling the track of the second drilling, and continuously correcting the track of the second drilling in the process of the second drilling through comparing the actual track of the second drilling with a plan view and a section view of the position of the roadway (2) in real time so that the real-time hole bottom of the second hole (12) is continuously close to the estimated direction of the central target location of the roadway (2).
Technical Field
The invention belongs to the field of coal mining, and particularly relates to a construction method for a ground drilling accurate through roadway of a coal mine.
Background
In the coal mining construction process, the connection with an underground roadway needs to be established from the ground, and a mode of drilling from the ground to the roadway is adopted, wherein the type of drilling is generally a feeding hole or a nitrogen injection hole for conveying materials underground from the ground, and the type of drilling can also be similar drilling of a coal mine accident ground rescue well and the like.
To make the drilling can pierce through to the tunnel from ground drilling, hardly control drilling orbit in drilling process, can not effective control drilling can accurate tunnel that passes through.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a construction method for accurately penetrating a coal mine ground drilled hole, which can realize accurate penetration of the ground drilled hole.
The purpose of the invention can be realized by the following technical scheme:
a construction method for a coal mine ground drilling accurate tunnel penetration comprises the ground and a tunnel, and comprises the following steps:
s01: arranging the position of a ground drilling hole;
s02: determining coordinates of the underground roadway by using a numerical simulation technology, designing a roadway-penetrating track route, and establishing a roadway-penetrating simulation diagram;
s03: carrying out first drilling, drilling downwards to form a first opening, drilling the bottom end of the first opening at least 20m below a bed rock surface, measuring three parameters of a first opening hole body, namely hole depth, hole inclination and direction after construction is finished, measuring an azimuth angle (namely a magnetic azimuth angle) by using a magnetic inclinometer, correcting the magnetic azimuth angle to be a true azimuth angle, and correcting magnetic declination of three measured parameter data of the first opening hole body;
s04: a first retaining wall sleeve is placed in the first opening in a downward mode, the first retaining wall sleeve and the first opening are placed coaxially, the first retaining wall sleeve is hung at the opening of the first opening and is at least 0.5m higher than the ground, the diameter of the first retaining wall sleeve is at least 50mm smaller than that of the first opening, cement slurry is injected between the outer wall of the first retaining wall sleeve and the inner wall of the first opening after the first retaining wall sleeve is placed, and the first retaining wall sleeve is sealed by cement;
s05: carrying out secondary drilling by taking the bottom end and the axis of the first opening as references, drilling a second opening downwards, wherein the diameter of the second opening is smaller than that of the first retaining wall sleeve, the distance between the bottom end of the second opening and the roadway top plate is not more than 20m, simulating a drilling track by using a linear drilling inclinometer and a numerical simulation technology in the secondary drilling process, and continuously correcting the drilling track;
s06: after the second drilling construction is finished, re-testing and checking the drilled track of the second drilling by using a magnetic inclinometer;
s07: a second retaining wall sleeve is placed in the second opening hole, the second retaining wall sleeve and the second opening hole are coaxially placed, the second retaining wall sleeve is hung at the opening of the second opening hole and is at least 0.5m higher than the ground, the diameter of the second retaining wall sleeve is at least 10mm smaller than that of the second opening hole, cement slurry is injected between the outer wall of the second retaining wall sleeve and the inner wall of the second opening hole after the second retaining wall sleeve is placed, and the second retaining wall sleeve is sealed by cement;
s08: and taking the hole bottom of the second opening as a reference, drilling for the third time, wherein the third opening is drilled downwards, the diameter of the third opening is smaller than that of the second retaining wall sleeve, and the third drilling is drilled from the bottom end of the second opening to the roadway bottom plate.
Further, the first drilling in S03 is performed using a conventional drilling tool.
Further, the second drilling in S05 is performed by directional drilling using a screw drill.
Further, the third drilling in S08 is performed using a conventional drilling tool.
Further, the specific step of S05 is:
in the second drilling process, the wireless inclination measurement while drilling instrument is installed on the drilling tool, the data such as the well inclination and the direction of the drilling tool are measured through the wireless inclination measurement while drilling instrument, the measured data signals are transmitted to the ground computer through the wireless inclination measurement while drilling instrument, the ground computer converts the received data signals into the position coordinates of the drilling tool, and the track of the second drilling is accurately calculated through a numerical simulation technology according to the position coordinates of the drilling tool;
according to the track of the second drilling, the position relation between the hole bottom position of the second open hole and the roadway top plate is simulated and analyzed, data prediction is carried out, and the real-time second drilling design track is simulated according to the prediction data calculation;
and according to the designed real-time track of the second drilling, monitoring the track of the second drilling in real time by using a computer, controlling the track of the second drilling, and continuously correcting the track of the second drilling in the process of the second drilling through comparing the actual track of the second drilling with a plan view and a section view of the position of the roadway in real time so that the real-time hole bottom of the second opening is continuously close to the estimated direction of the target location of the central place of the roadway.
The invention has the beneficial effects that:
through designing the three-opening drilling structure, the drilling track can be monitored and controlled by utilizing a wireless inclinometer and a numerical simulation technology, so that the ground drilling is accurate and the roadway is penetrated.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic view of a cross-sectional control simulation of an embodiment of the present invention;
FIG. 3 is a schematic diagram of a planar control simulation according to an embodiment of the present invention;
FIG. 4 is a schematic representation of a three-dimensional control simulation of an embodiment of the present invention;
FIG. 5 is a diagram illustrating a simulation of checking a calculated trajectory of a measuring instrument according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A construction method for a coal mine ground drilling accurate tunnel penetration is shown in figure 1 and comprises a ground 1 and a tunnel 2, and the construction method comprises the following steps:
s01: reasonably arranging the positions of the drill holes on the ground 1 according to the factors such as the position, the depth, the stratum inclination angle and the like of the underground roadway 2, wherein the drill hole positions are positioned right above the roadway 2 or 21-5m away from the roadway;
s02: according to parameters such as the position, the depth, the stratigraphic dip angle and the like of the underground roadway 2, determining the coordinates of the underground roadway 2 by using a numerical simulation technology, designing a through roadway track route according to the position of the arranged ground 1 drilling hole, establishing a through roadway simulation diagram, and realizing the purpose of dynamically monitoring the actual drilling track according to the through roadway simulation diagram;
s03: performing first drilling at the positions of the hole positions of the arranged ground 1, wherein the first drilling is performed by using a conventional drilling tool, a first open hole 11 is drilled downwards, the bottom end of the first open hole 11 is drilled at least 20m below a bedrock surface 3, after the construction is finished, three parameters of a hole body of the first open hole 11, namely hole depth, hole inclination and direction are measured, an azimuth angle (namely a magnetic azimuth angle) is measured by using a magnetic inclinometer, the magnetic azimuth angle needs to be corrected to be a true azimuth angle, and magnetic declination correction is performed on three measured parameter data of the hole body of the first open hole 11;
s04: lowering a first retaining wall sleeve 15 into the first opening hole 11, wherein the first retaining wall sleeve 15 is coaxially placed with the first opening hole 11, the first retaining wall sleeve 15 is hung at the opening of the first opening hole 11 and is at least 0.5m higher than the ground 1, the diameter of the first retaining wall sleeve 15 is at least 50mm smaller than that of the first opening hole 11, after the first retaining wall sleeve 15 is placed, injecting
s05: taking the bottom end and the axis of the first opening 11 as references, performing second drilling, wherein the second drilling is performed by using a screw drill for directional drilling construction, a second opening 12 is drilled downwards, the diameter of the second opening 12 is smaller than that of the first retaining wall casing 15, and the distance between the bottom end of the second opening 12 and the top plate of the roadway 2 is not more than 20 m;
as shown in fig. 2, 3, 4 and 5, in the second drilling process, the wireless inclinometer while drilling is installed on the drilling tool, the data such as the well inclination and the direction of the drilling tool are measured by the wireless inclinometer while drilling, the measured data signals are transmitted to the ground computer by the wireless inclinometer while drilling, the ground computer converts the received data signals into the position coordinates of the drilling tool, and the track of the second drilling is accurately calculated by using a numerical simulation technology according to the position coordinates of the drilling tool;
according to the track of the second drilling, the position relation between the hole bottom position of the second open hole 12 and the top plate of the roadway 2 is simulated and analyzed, data prediction is carried out, and the real-time second drilling design track is simulated according to the prediction data calculation;
according to the designed real-time track of the second drilling, the track of the second drilling is monitored in real time by using a computer, the track of the second drilling is controlled, the real-time track of the second drilling is compared with a plan view and a section view of the position of the roadway 2 in real time, the track of the second drilling is continuously corrected in the process of the second drilling, so that the real-time hole bottom of the second opening 12 is continuously close to the estimated direction of the central target position of the roadway 2, and the final hole bottom falling point of the second opening 12 is positioned in the estimated roadway 2 when the second drilling is finished;
s06: after the second drilling construction is finished, re-testing the drilled track of the second drilling by using a magnetic inclinometer, comparing data measured by the wireless drilling inclinometer with data measured by the magnetic inclinometer, and checking whether the track of the second drilling meets the requirement or not;
s07: a second retaining wall sleeve 17 is lowered into the second opening, the second retaining wall sleeve 17 and the second opening 12 are coaxially placed, the second retaining wall sleeve 17 is hung at the opening of the second opening 12 and is at least 0.5m higher than the ground 1, the diameter of the second retaining wall sleeve 17 is at least 10mm smaller than that of the second opening 12, after the second retaining wall sleeve 17 is placed,
s08: and (3) carrying out third drilling by taking the hole bottom of the second open hole 12 as a reference, wherein the third drilling is carried out by using a conventional drilling tool, a third
The working principle is as follows:
designing a three-opening drilling structure, roughly presetting the approximate position of a drilling through lane by primary drilling, measuring related parameters by using a wireless inclinometer while drilling on the basis of a first opening 11, monitoring and correcting the track of a second drilling in real time by combining a computer numerical simulation technology, realizing the guiding purpose of the second drilling, and realizing the accurate through lane of a third drilling on the basis of a second opening 12.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.