The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Bookmark and Share
Sliding Structure and Factor of Quliang Coal Mine in Northern China Block
Pages: 31-35
Year: Issue:  2
Journal: Gansu Metallurgy

Keyword:  coal mineyanshan epochsliding structuressliding surfacelost stratasimple pendulumslide factor;
Abstract: Through the study of the sliding structure of the coal mine, The purpose is to correctly recover the coal seam after the break, so as to objectively delineate and estimate the ore body resources,and orrectly put into mine development and design.This must first understand the composition of the sliding structure.The gliding tectonics of coal district in Quliang consist of glide plane,underlying system and gliding mass.a.Glide plane is a hollow lunar shape, with thick crushed zone both in the top and bottom.Superficial part bevels strata and deep part fluctuates around minable seam;b.Underlying system: mainly consists of Ordovician system,charcoal and siltpelite in Permian base.Their position is under the minable seam like basal disk.c.Gliding mass: it lies on the glide plane and consists of stratum which above Permian minable seam.It is the moving part of gliding tectonics.The sense of movement of gliding tectonics is repeatedly back and forth.In the range of gliding tectonics, there are completely stratigraphic gap.Tectonic belt has compression feature as mylonite and fault clay, at the same time, it has tensile feature as breccia.Pre-compression and post-tensioning clearly proved this kind of movement.The cause of formation of gliding tectonics is the meridional pinch in early stage of Yanshan Jurassic Period.Firstly, coal measure stratum formed folding tectonics and gliding tectonics approximately at minable seam-boundary.The whole geological body was divided into high part and low part.Under the double action of gravity and earth crust pinch, gliding mass slides to the rock bottom and then slides to opposite slope due to inertia.Then it slides back to the rock bottom again.Therefore it slides back and force like damping simple pendulum movement.Late stage of Yanshan Lower Cretaceous, crustal movement becomes stretch, forming high angle normal fault and then cutting off the continuity of gliding plane.As a result, minable seam trapped and dropped 300-600m and gliding tectonics ended.This is a summary of the information obtained through a large number of drilling knowledge, It can help geologists to refer to this idea to find the structure of the missing coal mine, and make our mineral geological survey evaluation more reasonable.
Related Articles
No related articles found