Wyniki wyszukiwania - BazTech

1

Evaluation of building site category distribution for land-use planning in the Orlová region

Marschalko M., Fuka M.

Studia Geotechnica et Mechanica

|

2010

|

Vol. 32, nr 3

41-54

EN

The paper presents the results of a study dealing with the land-use planning in the mining landscape affected by underground mining of black coal. It is indubitable that conditions for future structures have been changing there and this fact must be taken into account and future activities in the affected areas have to be undertaken in such a way as to protect future engineering structures from damage. A selected criterion for this evaluation is the distribution of the so called building sites that reflects a potential influence on future constructions. Overlay analyses with the current built-up area, planned future built-up area according to the land-use plan and engineering- geological zones were carried out. It is discovered that the existing land-use plans for the mining area of the Orlová town (map sheet 15-44-02), north-east of the Czech Republic, fail to tally with the reality.

2

The impacts of underground mining as a possible factor affecting the Doubrava Oplíží slope movement activity

Marschalko M., Třeslín L., Fuka M.

Studia Geotechnica et Mechanica

|

2009

|

Vol. 31, nr 4

39-47

EN

The locality of Doubrava Oplíží is one of the landslides within an extensive slope front situated between the municipalities of Doubrava and Dětmarovice in the Moravian-Silesian Region and at the same time, in the allotment of Karviná Mine, ČSA Plant. The slope deformation stability was assessed in terms of the impacts of underground mining making use of isocatabase maps, terrain deformation parameter values determining the group of building sites subject to ČSN 73 0039, movements measured by zone extensometry and rainfall totals. The assessment of rainfall totals as well as a generally significant factor influencing the mobility of landslides did not identify any reaction in the measured movements of the slope deformation. The maps of subsidence caused by underground mining revealed a concordant declination of the slope deformation with the subsidence basin slope inclination that shall further increase according to the prospective maps till 2010. Thus, it is the case of the least favourable impact of the subsidence basin on the slope deformation when its inclination is being enhanced. Similar conclusions may also be drawn from the development of terrain deformation parameter values. Whereas in 2005 the slope deformation was in the 4th group of building sites, in 2010 its upper part will have been in the 3rd and the lower part in the 2nd group of building sites. In all probability, this fact shall similarly reduce the degree of landslide stability, which will jeopardize a road and parallel underground services running along the lower side.

3

Possible impact of current and former mining activities on a research locality in the Ostrava - Karvina District

Marschalko M., Treslin L., Fuka M.

Górnictwo i Geoinżynieria

|

2009

|

R. 33, z. 1

429-442

EN

The paper deals with a study of black coal underground mining activity impact (working district of Poruba and Lazy) on the locality on which current activity of ground morphology change is manifested, which was earlier attributed to the manifestations of older slope deformation. However, the method of geotechnical monitoring using the method of precise inclinometry combined with isocatabase maps in chronological order, ground deformation parameters and geophysical measuring proved the connection of this activity with the existence of discontinuous deformations formed due to undermining in the Ostrava - Karvina District, a significant mining region in the north-east of the Czech Republic. Localization of inclinometric measuring on holes in the active part as well as in near vicinity was important, which in case of inclination of both holes is evidence of undermining impact. During the monitored period dilatation of the ground surface occurred, which shows on a discontinuous deformation in the convex part of the subsidence trough slope. This fact probably causes changes in the state of stress from undermining, which may influence the formation of those phenomena. The application of such a methodology proved as optimal and can be recommended for other purposes in relation to undermining impacts.

PL

Praca omawia badania wpływu podziemnej eksploatacji węgla kamiennego na zmiany geomorfologiczne. W omawianym przypadku (rejony eksploatacji wokół miejscowości Poruba i Lazy) istniejąca aktywność geomorfologiczna terenu była początkowo przypisywana dawnym deformacjom uskokowym. W przedstawionych badaniach zastosowano metodę precyzyjnej inklinometrii, wykorzystując dodatkowo mapy izokatabazowe oraz badania geofizyczne. Zastosowana metoda monitoringu wykazała związek pomiędzy aktywnością geomorfologiczną na badanym terenie a podziemną eksploatacją węgla w rejonie Ostrawa - Karwina, aktywnym górniczo regionie w północno-wschodnich Czechach. Bardzo istotny dla badań był odpowiedni wybór lokalizacji studni inklinometrycznych. Jedną z nich zlokalizowano w strefie aktywnej, drugą w bezpośrednim sąsiedztwie tej strefy. Występowanie inklinacji w obydwu studniach jest dowodem wpływu eksploatacji górniczej na odkształcenia terenu. Zastosowanie przedstawionej metodologii okazało się niezwykle skuteczne, może być ona rekomendowana do innych badań związanych z oceną skutków eksploatacji górniczej.

4

Measurements by the method of precise inclinometry on locality affected by mining activity

Marschalko M., Fuka M., Treslin L.

Archives of Mining Sciences

|

2008

|

Vol. 53, no 3

397-414

EN

The paper evaluates the impact of undermining on the slope deformation in Staric. For the purposes of such an evaluation, isocatabase maps, parameters of terrain deformations calculated for the point lying on the ground surface of the slope deformation and inclinometric measurements in two wells, out of which the first is situated on the sliding slope and the second in the vicinity of the landslide body, have been used. On the basis of the inclinometric measurements a slope deformation movement vector perpendicular to the rock and soil mass vector caused by undermining was identified.

PL

Artykuł pokazuje wpływ eksploatacji górniczej na deformacje zboczy w Stafic. W celu oszacowania wielkości wpływu działalności górniczej wzięto pod uwagę pomiary osiadań, oraz parametry deformacji terenu otrzymane z pomiarów geodezyjnych z rejonu zboczy oraz z pomiarów inklinometrycznych. Pomiary te były wykonywane w dwóch studniach, z których jedna znajdowała się bezpośrednio na kontrolowanej skarpie, a druga w bliskim jej sąsiedztwie. Na podstawie pomiarów inklinometrycznych określono przemieszczenia zbocza oraz kierunek ruchu mas gruntowych.