Key Members:
Professor, the academician of Chinese Academy of Engineering, Shining Zhou
Professor, Yaodong Jiang
Professor, Jiping Sun
Professor, Deming Wang
Professor, Fubao Zhou
Professor, Baisheng Nie
Professor, Enyuan Wang
Professor, Gui Fu
Professor, Hongqing Zhu
Professor, Yueping Qin
Professor, Zijian Tian
 
(1) The researchers put forward the parting refactoring method of the complex discontinuous structure in deep rock mass, characterizing the three-dimensional feature and visualization of the discontinuous structure of mine rock and the collapse stress field, creating a new approach for further developing the quantitative and visualization research of the complex discontinuous structure, dynamic collapse feature and energy mechanism of deep mine rock.
 
 
(2) The researchers studied the interaction mechanism between geological reserve condition and rock bust, developed the technology of the failure evolvement of mining stress field and strata structure, and the governance of rock burst, created the multi-parameter identification and monitoring pre-warning technology for the rock burst of coal mine, developed the supervising-system-based monitoring technology for the dynamic disaster of coal rock, and created a series of scientific apparatus and equipment with independent intellectual property rights, including the comprehensive detecting technology and explaining method for the developing feature of the hidden structural belt in deep area, the integrated monitoring and pre-warning system of “earthquake field and dynamic stress state”, prediction and pre-warning system of the danger of burst, ZOS mine distributed vibration monitoring system, wireless real-time monitoring and pre-warning system of rock burst, electric charge monitoring technology of rock burst, rapid transfer energy absorption burst prevention supporting system, and stress-control-based area precaution system of rock burst.
 
(3) The researchers studied the mechanism and prevention technology of large-area hydraulic support crushing accident, revealed the mechanism of the water burst disaster of mining hydraulic support under unconsolidated confined aquifer, created the method for detecting the risk area of hydraulic support water burst, and established the disaster prevention system which is composed by risk prediction, precaution before exploitation, pre-warning in mining and real-time control. Besides, they also successfully revealed, with the structure of the exploited single key strata of shallow coal seam, under the four kinds of condition including the thick aeolian sand compound single key strata condition, uphill section of cross valley topography condition, overlying concentrating coal column mining condition, overlying room-and-pillar mining condition, the instability mechanism of key strata structure and hydraulic support, and carried out the prevention measures of hydraulic support disaster such as high resistance support roof control.
 
(4) The researchers studied the gas reserve regularity of contiguous outburst coal seam group, and developed the gas comprehensive underpit drilling method in contiguous coal seam group consisting of the preparation, operation and post-treatment with the no coal-pillar upper protective seam mining as its core, and the three-dimensional gas comprehensive drilling method with the coordinated operation of ground gas drilling in the contiguous outburst coal seam group. They acquired the regularity of the response feature of the acoustic emission and electromagnetic radiation in the deformation and fracture process of gas-saturated coal, developed the acoustic-electric sensor of coal rock, conducted experimental analysis of the variation regularity of the electromagnetic radiation, acoustic emission and gas concentration of working face and their correlation with outburst danger, and carried out the acoustic-electric gas comprehensive monitoring and pre-warning technology for coal and gas outburst.
 
(5) The highly effective inhibitive fire preventing and extinguishing technology for the prevention and control of coal spontaneous combustion has been developed.
As the conventional fire preventing and extinguishing technology cannot be used in the mining areas in the western China where the ground surface is rich in sand while short in soil and water, the researchers invented a highly effective, green and environment friendly inhibition with high water absorption, water conserving function and sand suspending ability, creating an inhibitive mortar-based fire preventing and extinguishing technology which is suitable for the west region.

(6) The highly effective foam technology for the prevention and control of mine dust disaster has been developed. 
As the mist spray is easily jammed in mine, the mist environment would affect worker’ operation, the use of dust blower is highly risky in the mine with massive gas or outburst, and the coal seam water injection is far from effective in dust removing, the researchers applied the foam technology into the prevention and control of mine dust. Compared with the mist particle, the foam has advantages in dust control for its larger superficial area, stronger absorbability and better wettability, so the researchers invented a highly effective foam-based technology for dust control. Such a technology successfully increased the dust control rate and reduced the amount of water use, becoming an innovative technology for the prevention and control of mine dust.
 
The achievements above have attracted great peer attention from academia. The monitoring and pre-warning technology for dynamic disaster has worked impressively well in practical operation. The dynamic disaster predicting theory and prevention and control technology consisting of coal mine roof in deep area, rock burst, and coal and gas outburst with the integration of theory, technology, measure and application was successfully created. Meanwhile, a batch of engineering practice and application demonstration bases such as Yima Coal Industry Group Co., Ltd have been established, which made remarkable contributions in solving the major problems of coal mine roof, rock burst and coal and gas outburst.