Results 31 to 40 of about 139,565 (215)

The engineering geology of the Nottingham area, UK [PDF]

, 2009
Nottingham was built near a crossing point on the River Trent in the East Midlands of England. Initially, the City developed on a low sandstone hill close to the north bank of the river, which provided a secure, well-drained location above the marshes ...
Bell, F.G., Culshaw, M.G., Forster, A., Nathanail, C.P.   +3 more
core   +1 more source

The House of Kwee Sik Poo an Indonesian-Chinese Merchant From Pasuruan [PDF]

, 2017
The Kwee family is an old Indonesian-Chinese family from Pasuruan, in East Java, and one of a few merchant families of either Chinese or Arab ethnic origin which led successful lives in this small town in the nineteenth century.
Sien, K. H. (Kwee)
core   +3 more sources

Theory and technical system of control of far-near field hard roofs from ground and underground in a large space stope

Meitan xuebao, 2023
The stope space, after mining an extra-thick coal seam with hard roofs, is large, and its law of mining pressure is complex. The mechanism of strong mine pressure action for this stope is unclear, and there is a lack of multi-point control technology ...
Bin YU, Yang TAI, Tiejun KUANG, Rui GAO, Jingxuan YANG, Binwei XIA, Weibing ZHU, Yong LI   +7 more
doaj   +1 more source

New meanings from old buildings [PDF]

, 2001
The three modest house projects described here are by three fellow travellers — the two authors and David Lea — interested in the Organic side of Modernism.
Blundell Jones, P., Sergeant, J.
core   +1 more source

System and application of regional fracking of coal seam roof on and under the ground to prevent rockburst

Meitan kexue jishu, 2023
To solve the problems of small local relief range, low continuity and high operational risk of rockburst, regional hydro-fracking and burst prevention system and engineering application research were carried out within thick and hard roof of a coal seam ...
PAN Junfeng, LU Chuang, MA Xiaohui, XIA Yongxue, XIE Fei, XU Gang, DOU Guidong, LYU Dazhao, SUN Xiaodong, MA Wentao   +9 more
doaj   +1 more source

Migration characteristics and disaster reduction and erosion prevention mechanism of thick and hard roof in deep filling mining

Meitan kexue jishu
To address the issue of rock burst disasters induced by the fracture of thick-hard roof strata, focuses on deep thick and hard roof. By integrating theoretical analysis, engineering experiments, and field monitoring, the fracture characteristics of thick-
Erhu BAI, Ranlie WANG, Wenbing GUO, Yi TAN, Hui LI, Xueyi LI, Sulin CHENG   +6 more
doaj   +1 more source

Rock burst mechanism induced by stress anomaly in roof thickness variation zone: a case study

Geomatics, Natural Hazards & Risk, 2022
The variation of hard roof thickness is an essential contributor in triggering rock bursts during longwall mining. Case analysis and numerical modeling were used to study the stress and energy characteristics of the coal and rock mass and its fracture ...
Xianxi Bai, Anye Cao, Wu Cai, Yingyuan Wen, Yaoqi Liu, Songwei Wang, Xuwei Li   +6 more
doaj   +1 more source

Optimization Analysis of Advanced Support for Thick and Hard Roof

International Journal of Natural Resources and Environmental Studies
Based on the geological conditions of 1033 working face in Yuandian No.1 Coal Mine, this paper studies the support distance and support strength of hydraulic support in the advanced section of roadway roof. Through numerical simulation analysis, the advance support range of the advance roadway is 5m, 10m, 15m, 20m and 25m four kinds of distance plastic
Yongkun Zhang, Kaiwei Wang
openaire   +1 more source

Study on the Spatiotemporal Dynamic Evolution Law of a Deep Thick Hard Roof and Coal Seam

Processes, 2023
Underground mining in coal mines causes strong disturbance to geological structures and releases a large amount of elastic strain energy. When the roof is a hard and thick rock layer, it is easy to cause dynamic disasters such as rock burst. To analyze the impact of a deep thick and hard roof fracture on the safe mining of thick coal seams, this paper ...
Zhigang Zhang, Linchao Dai, Haitao Sun, Yanbao Liu, Huiming Yang, Rifu Li, Yi Zhang   +6 more
openaire   +1 more source

Laboratory studies of a high-strength roof bolting by means of self-extending mixtures [PDF]

, 2019
Purpose is to analyze parameters of a new method to fasten roof bolts with the help of nonadhesive mixtures extending while hardening along with the development of high expansion pressures. Methods.
Isaienkov, O, Kurdiumow, D, Sakhno, I, Sakhno, S   +3 more
core   +1 more source