A Method for Preserving the Memory of Drilling Surrounding Rock Damage Form
A morphological memory and surrounding rock technology, applied in earthwork drilling, mining equipment, mining equipment, etc., can solve problems such as reliability deterioration, single geological survey of simulated conditions, differences, etc., to achieve simple construction, ensure reliability, data full effect
Active Publication Date: 2018-05-01
CHINA UNIV OF MINING & TECH (BEIJING)
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] At present, computer numerical simulation and similar material simulation experiments in the laboratory can only provide indirect references for the approximate scope of the plastic zone, and due to single simulation conditions or insufficient geological surveys, there are large differences with the real environment on site and the unique geological conditions of each mine and complexity, sometimes there is a large difference between the research results and the actual situation, and the reliability becomes poor. The method for retaining the memory of the damage form of the drilling surrounding rock according to the actual situation in the field restores the damage form of the surrounding rock more realistically. Study the law of mine pressure appearance, analogize the damage state of roadway surrounding rock and the distribution of plastic zone, guide coal and gas drainage and provide technical support for support design
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0012] refer to figure 1 , figure 2 , image 3 , carry out invention to the present invention, a kind of drilling surrounding rock destruction form memory retention method, by drilling in roadway surrounding rock or coal body, such as figure 1 ; After a certain period of time, cracks appear in the surrounding rock of the drilling hole, such as figure 2 Inject the identifiable fluorescent powder reagent into the borehole, and seal the hole under high pressure, then the phosphor powder reagent is pressed into the fissure in the damaged zone of the surrounding rock of the drilled hole. The shape and size of the fissures are different, and the filling materials in the fissures are also different. The shape, size, density and other development forms of the filling materials in the fissures are the failure forms of the fissures in the surrounding rock of the borehole; that is, the failure form of the surrounding rock of the borehole is memorized during filling The actual damage...
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 a drill hole surrounding rock failure form memory keeping method. According to the drill hole surrounding rock failure form memory keeping method, a crack in a drill hole surrounding rock failure area is filled with recognizable matter so as to remember and store the shape, size, density and other failure development conditions of the drill hole surrounding rock crack at the filling moment. The drill hole surrounding rock failure form memory keeping method is characterized in that the recognizable matter is injected into a drill hole at high pressure and pressed into the crack of failure area surrounding rock, the development conditions of the crack at the filling moment are remembered and stored, and afterwards, the development conditions of the crack of the surrounding rock and the failure form of a plastic zone around the drill hole can be observed through the section of the drill hole. According to the drill hole surrounding rock failure form memory keeping method, the drill hole failure state in a coal body or a surrounding rock body can be observed on site scientifically and reliably, and scientific and effective actual measurement technical support is provided for studying site drill hole surrounding rock failure and a mine pressure behavior law.
Description
technical field [0001] The invention belongs to the technical field of on-site measurement of mine pressure appearance, and in particular relates to a method for obtaining the shape and size of the cracks in the surrounding rock of the borehole by filling identifiable substances into the cracks in the damaged area of the surrounding rock of the borehole and recording the shape of the cracks at the time of filling. The on-site observation method of damage development such as density and density, and the shape and size of the plastic failure zone around the borehole. Background technique [0002] At present, computer numerical simulation and similar material simulation experiments in the laboratory can only provide indirect references for the approximate scope of the plastic zone, and due to single simulation conditions or insufficient geological surveys, there are large differences with the real environment on site and the unique geological conditions of each mine and compl...
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 Patents(China)
IPC IPC(8): E21F17/00
CPCE21F17/00
Inventor 赵志强吕坤马振凯李臣
Owner CHINA UNIV OF MINING & TECH (BEIJING)