Paleokarst crust of Ordovician limestone and its capability in resisting water inrushes in coal mines of north China NCKRI Symposium 2: Proceedings of the Thirteenth Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of Karst

Alternative Title

NCKRI Symposium 2: Proceedings of the Thirteenth Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of Karst

Creator

Gongyu Li

Files

Publication Date

May 2013

Abstract

pg(s) 279-284 With increase in mining depth of the Carboniferous-Permian coal seams in North China, it is particularly important to study the heterogeneity of karst development in the underlying Middle Ordovician limestone and determine any impermeable strata that may prevent the pressurized karst water from bursting into coal mines. Detailed analysis of the exploratory borehole data suggests presence of a paleokarst crust at the top of Middle Ordovician Fengfeng Formation. Because of its mechanical strength and low permeability to water, the paleokarst crust can function as an additional water-resisting layer. This paper takes Sihe Mine of Shanxi Province as an example to study the geotechnical and hydrogeological characteristics of the paleokarst crust. Incorporation of this additional hydrological barrier led to more minable coal seams in the coalmine. Open Access - Permission by Publisher See Extended description for more information.

Type

Conference Proceeding

Publisher

University of South Florida

Identifier

K26-03247

Recommended Citation

Li, Gongyu, "Paleokarst crust of Ordovician limestone and its capability in resisting water inrushes in coal mines of north China NCKRI Symposium 2: Proceedings of the Thirteenth Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of Karst" (2013). KIP Talks and Conferences. 82.
https://digitalcommons.usf.edu/kip_talks/82