Bed separation water damage prevention and control method for coal mining

A technology of coal mining and layer separation, which is applied in drainage, mining equipment, earth-moving drilling, etc., can solve the problems of difficult drilling, difficult construction, and difficult grouting and plugging, so as to reduce the amount and quantity of mine water inflow. and low price, the effect of reducing the burden of drainage

Active Publication Date: 2020-10-13
LIUPANSHUI NORMAL UNIV
View PDF15 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) Most of the prevention and control technologies for abscisional water inrush are dredging, and the dredging of aquifers will cause environmental problems such as ecological environment degradation, waste of water resources, and land subsidence;
[0004] 2) Most of the water is drained after coal mining, and it is very difficult to drill holes in the broken rock body after mining, and the construction i

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Bed separation water damage prevention and control method for coal mining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A coal mine mines the No. 4 coal seam, and the 4101 coal mining face (150 meters long inclination, 780 meters long in direction) has a huge thick Luohe Formation sandstone above it, which is very prone to water damage from the separation layer. In order to prevent the water damage from the separation layer, the following steps are taken Prevention and control of coal mining water hazards:

[0034] Step 1: Obtain mining and geological parameters before coal mining: establish a numerical similarity model based on geological data, and obtain the cycle of coal mining through simulation experiments to press step distance D to be 28 meters. The thickness of each rock layer above the coal seam is obtained through the drilling histogram, and the uniaxial compressive strength of each rock layer above the coal seam is obtained through sampling tests. There are 12 rock layers above the coal seam, and the thickness and uniaxial compressive strength of each rock layer from bottom to...

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

No PUM Login to view more

Abstract

The invention provides a bed separation water damage prevention and control method for coal mining, and relates to the technical field of mine geology. The bed separation water damage prevention and control method for coal mining comprises the following steps that mining and geological parameters are acquired before coal mining; a directional drilling implementation area is designed before coal mining; directional drilling is implemented, and perforation is carried out; perforation grouting is carried out after perforation; hole sealing grouting is carried out after perforation grouting; an aquifer observation hole is implemented in the ground after directional drilling and hole sealing; coal mining is carried out, and drainage and supplementary grouting are carried out according to aquifer observation; and no bed separation water damage occurs after coal mining is completed. The method is simple and easy to implement; the influence on the environment is small; the mine water inflow can be reduced, the drainage burden is reduced, and the safety is higher; and the grouting slurry is lower in quantity and price, and the economy and the reasonability are achieved.

Description

technical field [0001] The invention relates to the technical field of mine geology, in particular to a method for preventing and controlling water damage from a separation layer in coal mining. Background technique [0002] Coal mining is affected by many disasters, among which water damage is an important one. Mine water hazards include roof, floor, abscission layer, old empty area and other types, among which abscission layer water damage is of great significance due to its suddenness, difficulty in prevention and control, and great harm. At present, although there are many coal mining separation layer water damage prevention and control technologies, there are the following problems: [0003] 1) Most of the prevention and control technologies for abscisional water inrush are dredging, and the dredging of aquifers will cause environmental problems such as ecological environment degradation, waste of water resources, and land subsidence; [0004] 2) Most of the water is ...

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
no application Login to view more
IPC IPC(8): E21F16/00E21B33/13
CPCE21B33/13E21F16/00
Inventor 高颖李涛
Owner LIUPANSHUI NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap