Results 51 to 60 of about 479,017 (202)

Deformation mechanism and optimum supporting structures in fault-bearing biased tunnels

Zhongguo dizhi zaihai yu fangzhi xuebao
To explore the deformation mechanisms of tunnel surrounding rock under complex geological conditions and develop appropriate technologies for controlling surrounding rock deformation, this study analyzes the deformation of surrounding rock at the mouth ...
Xiaolong LIU, Chuang SUN, Hui WANG, Weiming ZHANG, Xingxuan ZHENG, Yiting WANG   +5 more
doaj   +1 more source

Characterization of mesostasis regions in lunar basalts: Understanding late-stage melt evolution and its influence on apatite formation [PDF]

, 2016
Recent studies geared toward understanding the volatile abundances of the lunar interior have focused on the volatile-bearing accessory mineral apatite.
Agrell, Anand, Anderson, Barnes, Barnes, Birck, Boyce, Boyce, Day, Engel, Eugster, Fagan, Ghiorso, Ghiorso, Gualda, Hallis, Henderson, Hintenberger, Hohenberg, Horn, Husain, James, Lester, Liu, Longhi, Mathez, McCubbin, McCubbin, McCubbin, McCubbin, McCubbin, Neal, Neal, Nyquist, Papanastassiou, Papanastassiou, Pernet-Fisher, Prowatke, Ridley, Ryder, Seddio, Tartèse, Tartèse, Tartèse, Tartèse, Turner, Wakita, Weigand   +47 more
core   +1 more source

Research on failure mechanism and control measures of surrounding rock in large section raise shaft construction chamber

Meikuang Anquan, 2022
Aiming at the problem of serious deformation and failure of large section chamber surrounding rock, taking the large section reverse shaft construction chamber of Lijiahao Mine as the research background, using the research methods of numerical ...
LI Jianhua, XIE Fuxing, CHEN Kai, JING Guoye, WANG Yongfeng, ZHOU Ming   +5 more
doaj   +1 more source

Principle and technology of step strengthening control of soft rock argillization roadway in coal mine

Meitan xuebao
The sedimentary rock strata of the coal measure are generally characterised by significant argillity, high water content and weak lithology. The problem of controlling the stability of the surrounding rock in soft rock argillation roadways has become ...
Guichen LI, Haoran HAO, Yuantian SUN, Jinghua LI, Sen YANG, Zeyu SHAO, Xiaofang WO   +6 more
doaj   +1 more source

Coordinated control technology for anti-impact pressure relief of mining roadway and large deformation of surrounding rock

Meikuang Anquan, 2023
The mining roadway under complex conditions was taken as the project background in No.3305 working face of Yiqiao Coal Mine, and the research on the coordinated control was carried out for anti-impact pressure relief and surrounding rock deformation on ...
GU Shitan, CHEN Changpeng, HAN Chuanlei, RONG Weitao
doaj   +1 more source

Stress Relief and Support for Stability of Deep Mining Roadway with Thick Top Coal in Hujiahe Coal Mine with the Risk of Rock Burst

Shock and Vibration, 2021
Rock burst is a typical dynamic disaster in deep underground coal mining. Based on the support problems of the deep roadways in fully mechanized caving face 401111 of Hujiahe Coal Mine suffering from rock burst in Shaanxi Province of China, the failure ...
Wenjing Liu, Deyu Qian, Xingguo Yang, Sujian Wang, Jinping Deng, Qi Cui, Zexiang Li   +6 more
doaj   +1 more source

Tunnel Surrounding Rock Deformation Characteristics and Control in Deep Coal Mining

Geomaterials, 2013
In order to study the failure characteristics and control method of deep tunnel surrounding rock, based on the stress test, the structure and stress state of the main transportation tunnel surrounding rock in Mine Zhaogezhuang level 14 was analyzed, and it shows that the surrounding rock is exposed to an interphase hard and soft disadvantageous ...
Zhiqiang Zhao, Housheng Jia, Bo Peng, Yangyang Dong   +3 more
openaire   +2 more sources

Instability characteristics of surrounding rock and surrounding rock control technology of deep coal roadway crossing the fault: a case study of Zhuxianzhuang coal mine

Geomatics, Natural Hazards & Risk
To prevent severe damage to the surrounding rock of the roadway under the high ground pressure within deep mining, the stress evolution of the surrounding rock was studied, and the surrounding rock control technology in the II1057 roadway of ...
Huaibin Li, Weipeng Pan, Xinzhu Hua, Bo Luan, Zujun Huang   +4 more
doaj   +1 more source

Research Progress on Safety Control of Surrounding Rock-Support System in Deep Buried Soft Rock Tunnels

IOP Conference Series: Earth and Environmental Science, 2021
Abstract The deep-buried soft rock tunnel has large deformation degree and long duration, which makes the surrounding rock-support very difficult. How to formulate effective design countermeasures to control soft rock deformation is one of the important technical problems in the design and construction of deep-buried soft rock tunnels ...
Jianhe Li, Wanmin You, Song Wu, Jian Li, Jian Han   +4 more
openaire   +1 more source

Surrounding rock control mechanism of deep coal roadways and its application

International Journal of Mining Science and Technology, 2015
Abstract Aiming at the surrounding rock control problem of mining and preparation entries in Xingdong mine with large mining depth, and the comprehensive control countermeasures including high pre-stress cable truss system, this study put forward powerful anchor support system and anchor cable adaption technology to surrounding rock deformation ...
Shengrong Xie, Erpeng Li, Shijun Li, Jinguang Wang, Chongchong He, Yafeng Yang   +5 more
openaire   +1 more source