Mussin Ravil Altavovich
Doctoral student, Karaganda State Technical University
Kazakhstan, Karaganda city
Ikonopisceva Ekaterina Olegovna
Student, Karaganda State Technical University,
Burak Julia Sergeevna
Student, Karaganda State Technical University,
Kazakhstan, Karaganda city
Pozdnyakova Irina Yurievna
Teacher, Karaganda State Technical University,
Kazakhstan, Karaganda city
Research of character of a straining of lateral mucks round a mine
working with àíêåðíûì
fastening depending on an angle of incidence of a seam and depth of anchoring
by contour a file
Keywords: the analytical modeling, the is
intense-strained condition, production engineering, by contour a rock mass,
fastening of mine workings.
Displays of mountain pressure, condition
of maintenance of developments depending on mining and technological parametres
are investigated the is intense-deformed condition. Researches have allowed to
establish degree of their influence of working out on efficiency of application
anchoring fastenings taking out developments and will allow is proved to apply
fastening passports, to provide stability of mountain developments and to lower
expenses for their carrying out and maintenance.
Maintenance and
increase in volume of underground coal mining was possibly only in the presence
of highly effective production engineering of conducting and maintenance of the
development openings, providing escalating of volumes is mountain-spadework.
The purpose of
researches is creation of production engineering of conducting developing
(taking out) mine workings on the basis of the revealed regularity of behavior
of rock masses bordering on to them, optimization of parametres of
technological circuit designs of the spadework providing raise of efficiency of
functioning of underground mountain manufacture.
At maintenance
of pits with growth of depth of working out of one of the basic problems
maintenance of stability of mine workings is. Metal flexible linings of arch
type are applied to maintenance of developments on pits of the Karaganda basin
and in the restricted volume - anchoring fastening in great volume. Expenses
with arch lining application make conducting and fastening of one metre of
development 900 - 1000 US dollars, the metal rolling charge makes 0,3 - 1,0 t
and charges on maintenance make not less than 10 - 15 % from conducting cost.
On 1 million ò
coal at the systems of working out accepted in practice conducting 5,0 -
Are most subject
to rock pressure agency bedded developments. Losses of the square of their
cross-section attain 60 - 70 % that leads to that 20 % of developments are
annually repaired and retimbered. The share of expenses for conducting,
fastening and maintenance of developments attains 15 - 20 % from the cost price
of coal mining and in repair of developments are engaged more than 10 % of
underground workers.
The weakest link
in the solution of questions on raise of efficiency of use of progressive
production engineering anchoring fastenings is the insufficient level of
scrutiny of aeromechanical processes near to mine workings.
Conditions of
maintenance of developments with various aspects of fastening in a zone of
agency of a broken working are investigated on an instance of a conveyor
subentry 49k10-z walls on pit of Kostenko of coal department of
joint-stock company «ArselorMittal of Temirtau» (the Karaganda area, Republic
Kazakhstan). The pulled out seam thickness ê10
on the western wing of pit makes 3,7 -
In drawing 1 the
condition of investigated development in a zone subject to agency of a broken
working is presented. Optimum conditions of maintenance have been provided on a
section of a conveyor subentry 49k10-z by extent of the semiarch
form of
a)
b)
c)
d)
à) - mixed lining; b) - headtree deformation.
c) - headtree gust; d) - deformation of racks.
Drawing 1 – Condition of a conveyor subentry 49k10-z
in a zone of agency of a broken working
list of references
1 Instruction for
the calculation and use of anchor support in the mines of the Karaganda basin. Karaganda,
2008 - 88s.
2 Semevsky V.N.
and others. - M., Nedra, 1965. - 328 p.
3 Makhno E.Ya.K.
to the question of the calculation of the barbell. // Coal, 1959, No. 5. S.
41-42.
4 Timofeev OV,
Mordukovich MM Temporary guidance on the use of rod support in the preparatory
workings at the mines of Kuzbass. -LG them. G.V. Plekhanov, 1971. - 102 p.
5 Borisov AA New
methods of calculating the barbell support. M. Gosgortekhizdat, 1962. - 252 p.