Drilling geological detection system and overlying strata comprehensive fracture angle and caving form actual measurement methods

A technology for geological detection and overlying rock, which is applied in radio wave measurement systems, measuring devices, radio wave reflection/reradiation, etc., can solve problems such as incomplete and correct reflection of overlying rock fracture forms, and achieve three-dimensional graphic images and actual measurement methods Simple, clear results

Pending Publication Date: 2021-04-30
NANYANG INST OF TECH
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  • Application Information

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Problems solved by technology

[0004] In order to make up for the limitations of the comprehensive fracture angle measurement method of overlying rock, the on-site measurement results cannot completely and correctly reflect the fracture shape of the entire overlying rock, especially the broken space shape of the overlying rock in the goaf, it is urgent to invent an overlying rock Measuring method of comprehensive fracture angle of rock and caving space of overlying strata in goaf

Method used

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  • Drilling geological detection system and overlying strata comprehensive fracture angle and caving form actual measurement methods
  • Drilling geological detection system and overlying strata comprehensive fracture angle and caving form actual measurement methods
  • Drilling geological detection system and overlying strata comprehensive fracture angle and caving form actual measurement methods

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Embodiment 1

[0039] Example 1, see figure 1 and figure 2 , a method for measuring the comprehensive breaking angle of the overlying strata in coal seam mining, comprising the following steps: the first step is to design the parameters of the pre-detection borehole 11, the borehole 11 is perpendicular to the mining roadway 12, and the included angle with the vertical direction is α, and the depth is designed The second step is to drill to the edge of the goaf according to the design parameters; the third step is to completely assemble the mining drilling geological radar detection system (connect the guide wheel 3, the transmitting antenna 1, the receiving antenna 2, the transmission connection device 4, push rod 5, detection host 8 and depth recorder 7); the fourth step is to set the detection parameters after starting the inspection to confirm that there is a signal connected, and slowly advance to the deep part of the borehole 11 for detection until it is pushed to the bottom of the bor...

Embodiment 2

[0040] Example 2, see image 3, a method for measuring the spatial form of overlying rock collapse in a coal seam mining goaf, comprising the following steps: the first step, designing the parameters (inclination angle, hole depth, aperture, quantity); in the second step, according to the design parameters in the mining roadway 12, drilling is carried out to the edge area of ​​the goaf; in the third step, the complete assembly of the mining drilling geological radar detection system (connecting the guide wheel 3, the transmitting antenna 1, Receiving antenna 2, transmission connector 4, push rod 5, detection host 8 and depth recorder 7); the fourth step is to set the detection parameters after starting the inspection to confirm that there is a signal connected, and slowly advance to the deep part of the borehole 11 for detection until the push To the bottom of hole 11 or can not continue to advance, then save the data, turn off the detection host 8, slowly pull out the detecti...

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Abstract

The invention discloses a drilling geological detection system and overlying strata comprehensive fracture angle and caving form actual measurement methods. The drilling geological detection system comprises a detection host, a depth recorder, a transmission wire, a wire coil, a radar antenna, a push rod, a guide wheel and data processing software. According to the overlying strata comprehensive fracture angle actual measurement method and the overlying strata caving form actual measurement method, drilling is conducted in a pre-detected roadway through the drilling geological detection system, all drill holes are detected through a mining drilling geological radar, detection images of all the drill holes are generated through the data processing software, and the comprehensive inclination angle of an abnormal body in the images is worked out; and the data processing software is combined with a computer program to invert detection data of the drill holes to generate a three-dimensional graph, and the spatial geometrical configuration of an abnormal range in the graph is the space configuration of goaf overlying strata caving. The methods are simple, the detection result is accurate and reasonable compared with theoretical analysis and is close to engineering practice, and goaf overlying strata caving space configuration detection is more vivid and visual.

Description

technical field [0001] The invention relates to a drilling geological detection system and an actual measurement method for overlying rock comprehensive fracture angle and overlying rock collapse shape by using the drilling geological detection system, and belongs to the application technical field of coal mine safe mining. Background technique [0002] The comprehensive breaking angle of the overlying strata in the stope is an important parameter in the mining design of coal mines. At present, most of them are calculated theoretically based on the slab or beam structure, and have not been uniformly measured on site. When the coal seam is actually mined, the structure of the overlying strata is very complex. Due to the difference in lithology, strata thickness and load, the fracture angle of each strata is also different, resulting in the comprehensive fracture angle of the overlying strata. The structure formed by the breaking of the overlying rock remains to be further exp...

Claims

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Application Information

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IPC IPC(8): G01S13/88
CPCG01S13/885
Inventor 曹文豪宋鹏孙小康季宪军陈国超
Owner NANYANG INST OF TECH
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