Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A Method for Partial Filling of Gob Area According to Surface Subsidence Characteristics

A technology for surface subsidence and goaf, which is applied to filling materials, mining equipment, earthwork drilling and mining, etc. It can solve problems such as difficult control of roof deformation, unsatisfactory filling effect, and single filling form, so as to reduce filling costs, Effect of preventing chain reaction and saving filling material

Active Publication Date: 2018-05-04
TAIYUAN UNIV OF TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common methods of partial filling include strip filling and pier filling, etc. Although these filling methods save filling materials, due to the lack of reasonable mining and filling planning, the filling form is single, the filling effect is not ideal, and the deformation of the roof is difficult to control

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
  • A Method for Partial Filling of Gob Area According to Surface Subsidence Characteristics
  • A Method for Partial Filling of Gob Area According to Surface Subsidence Characteristics
  • A Method for Partial Filling of Gob Area According to Surface Subsidence Characteristics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In a coal mine, the 5-6 coal seam of Group D is mined, with a thickness of 2-2.2m, an average mining depth of 570m, a coal seam dip angle of 15°, a loose layer thickness of about 300m, and a bedrock thickness of 270m. 820m long, inclined 140m long;

[0039] 1. According to the geological conditions of the coal mine, use the elastic plate theory to predict the surface subsidence, such as image 3 , 4 , calculate the maximum subsidence H=660mm, and draw the subsidence contour line of the subsidence surface;

[0040] 2. According to the surface subsidence contour map, design the position of the filling body; the specific method: carry out full filling within the central area where the subsidence amount is equal to 600-660mm, and control the subsidence center, where the direction is 150m and the inclination is 10m; in the subsidence amount Arrange several layers of strip filling bodies within the range of 330-600mm to control the large area of ​​subsidence, including 150m...

Embodiment 2

[0046] The buried depth of an iron ore body is 136-679m, the shape of the ore body is a "crescent" protruding southward on the plane, and the geological reserves are 7.90971×10 7 t, Mining by segmental caving mining method without pillars, the designed annual output is 1.8×10 6 t, the service life is 35a. Due to the poor integrity of the overlying rocks and the gravel layer of nearly 100 meters, the surface is strongly affected by mining for only one year. Mining subsidence causes violent movement of rock formations and ground surfaces, seriously affecting safe production. Therefore, MSDAS-GIS is used to predict the surface mining subsidence of this iron ore, and it is partially filled and mined.

[0047] 1. According to the geological conditions of the iron ore, the MSDAS-GIS prediction system based on GIS and probability integration method is used to predict the surface subsidence, and it is obtained that the maximum subsidence displacement occurs in the center of the stop...

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

PropertyMeasurementUnit
strengthaaaaaaaaaa
strengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for conducting goaf partial filling according to ground surface subsidence characteristics. The method comprises the steps that the positions of filling bodies are designed according to a ground surface subsidence contour map; complete filling is conducted within a central area range, and a subsidence center is controlled; multiple circles of filling strips are arranged outside the complete filling range, and a larger subsidence region is controlled; multiple rows of filling monomers are arranged outside the filling strips, and a subsidence edge region is controlled; the filling bodies with different shapes are arranged in a goaf in a targeted mode, deformation destruction and ground surface subsidence of a roof are controlled, a filling body-roof structure control system is formed, and deformation destruction and ground surface subsidence of an upper overlying strata are controlled; narrow filling strip goaf-side retained roadways are arranged, the roadway driving workload of the next working face is reduced, and the goaf is filled in a sealed mode. According to the method for conducting goaf partial filling according to the ground surface subsidence characteristics, deformation destruction and ground surface subsidence of the roof can be effectively controlled, the recovery rate of coal mining under buildings, railways and water bodies is increased, and the environment is protected; filling materials are saved, the filling cost is reduced, and a large amount of underground space formed through filling is reused.

Description

technical field [0001] The invention relates to a method for partial filling of a goaf according to the characteristics of surface subsidence, which belongs to the field of filling and mining. Background technique [0002] For a long time, my country has generally adopted the caving method to deal with goafs of underground mineral resources. This method has a high degree of mechanization and mining efficiency, but it also causes large-scale deformation and collapse of the overlying strata, causing water seepage in roof cracks and damage to groundwater systems. Environmental and safety issues such as surface subsidence and destruction of buildings (structures), accumulation of gangue on the ground, and irregular accumulation of harmful gases in goafs. At the same time, there are a large number of "three under" resources in our country. Under the current situation of resource depletion, this part of resources urgently needs to be released and utilized. The methods of controlli...

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
Patent Type & Authority Patents(China)
IPC IPC(8): E21F15/00C04B28/00
CPCC04B28/00C04B2111/00724C04B2201/50E21F15/00E21F15/005C04B18/08C04B18/12C04B18/167
Inventor 冯国瑞杜献杰郭军戚庭野郭育霞李振张玉江栗继组牛利凯康立勋
Owner TAIYUAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com