ZA202102864B - Borehole blast roof-cutting and pressure-relieving model for gob-side roadways in deep mines and method for determining parameters - Google Patents

Borehole blast roof-cutting and pressure-relieving model for gob-side roadways in deep mines and method for determining parameters

Info

Publication number
ZA202102864B
ZA202102864B ZA2021/02864A ZA202102864A ZA202102864B ZA 202102864 B ZA202102864 B ZA 202102864B ZA 2021/02864 A ZA2021/02864 A ZA 2021/02864A ZA 202102864 A ZA202102864 A ZA 202102864A ZA 202102864 B ZA202102864 B ZA 202102864B
Authority
ZA
South Africa
Prior art keywords
gob
relieving
cutting
model
pressure
Prior art date
Application number
ZA2021/02864A
Inventor
Jucai Chang
Dongdong Pang
Chuanming Li
Yong Luo
Wenbao Shi
Haifeng Ma
Zhiqiang Yin
Tenggen Xiong
Nan Liu
Yu Ding
Original Assignee
Univ Anhui Sci & Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Anhui Sci & Technology filed Critical Univ Anhui Sci & Technology
Publication of ZA202102864B publication Critical patent/ZA202102864B/en

Links

ZA2021/02864A 2020-12-11 2021-04-29 Borehole blast roof-cutting and pressure-relieving model for gob-side roadways in deep mines and method for determining parameters ZA202102864B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011463129.8A CN112434458A (en) 2020-12-11 2020-12-11 Deep well gob-side roadway drilling blasting roof cutting pressure relief model and parameter determination method

Publications (1)

Publication Number Publication Date
ZA202102864B true ZA202102864B (en) 2021-07-28

Family

ID=74692159

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA2021/02864A ZA202102864B (en) 2020-12-11 2021-04-29 Borehole blast roof-cutting and pressure-relieving model for gob-side roadways in deep mines and method for determining parameters

Country Status (2)

Country Link
CN (1) CN112434458A (en)
ZA (1) ZA202102864B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113236248B (en) * 2021-05-14 2023-02-24 中国矿业大学 Method for calculating crest truncation angle in breaking process of cantilever structure
CN114542069B (en) * 2022-02-28 2023-02-24 安徽理工大学 Upper-breaking and lower-cutting gob-side entry retaining blasting method for huge-thickness top plate
CN115182729B (en) * 2022-08-02 2023-03-21 安徽理工大学 Inclined coal seam small coal pillar penetrating deep cutting shallow pouring gangue blocking roadway protection technology and top cutting position determination method
CN115659706B (en) * 2022-12-28 2023-04-04 北京科技大学 Design method for roof joint cutting in coal pillar-free self-entry mining

Also Published As

Publication number Publication date
CN112434458A (en) 2021-03-02

Similar Documents

Publication Publication Date Title
ZA202102864B (en) Borehole blast roof-cutting and pressure-relieving model for gob-side roadways in deep mines and method for determining parameters
EP4089197A4 (en) Chain steel for use in mine and manufacturing method therefor
GB2486326B (en) Method and apparatus for automated drilling of a borehole in a subsurface formation
PL2247826T3 (en) Method for the controlled maintaining of a distance between the roof and the face in longwall mining operations
EG26548A (en) Well tool and method for in situ introduction of atreatment fluid into an annulus in a well
MX338745B (en) Device used in the form of a packer or a temporary plug.
ZA202103021B (en) Safe and environmentally friendly rock blasting device and method
PL2836680T3 (en) Method for drilling holes in soil or rock material and for fixing an anchor in a borehole and apparatus therefor
GB2473347B (en) Method and apparatus for measuring true vertical depth in a borehole
GB201314276D0 (en) Downhole rebound hardness measurement while drilling or wireline logging
ZA202007432B (en) Similar material simulation experiment device and method for inclined rock strata
GB2612399B (en) Method for optimizing the particle size of temporary plugging balls for fracture-opening and diverting fracturing in deep shale gas horizontal well
GB202006050D0 (en) Earth-boring tolls having a selectively tailored gauge region for reduced bit walk and method of drilling with same
EP3256689A4 (en) Method and apparatus for filling an annulus between casing and rock in an oil or gas well
EP3565953A4 (en) System and method of sensing hydrocarbons in a subterranean rock formation
GB2564259B (en) Smart well plug and method for inspecting the integrity of a barrier in an underground wellbore
GB2583746B (en) A method of and apparatus for determining component weight and/or volume fractions of subterranean rock
GB201912862D0 (en) method and device for tracking and measuring proof-of-work contributions in a mining pool
GB2595357B (en) Method and model
IL287548A (en) In situ liner production system and method
ZA202102868B (en) Method for testing hydraulic fracturing and flushing permeability-increasing effect in coal seams
ZA202204010B (en) Device and method for time-unlimited rock crack orientation in superdeep borehole by hydraulic fracturing
ZA202104388B (en) Experimental apparatus and method of rock stratum movement in mining neighboring confined aquifers
EP4095349C0 (en) Tool for mechanical drilling, in particular for the construction of tunnels, and its creation method
ZA201901416B (en) Three-dimensional detection apparatus and detection method for water-bearing geologic structure in deep karst tunnel