Aiming at the fine detection of geological hidden disasters such as geological structure, formation water storage, gas enrichment and ground pressure in coal mining, the performance and applicable conditions of advanc...Aiming at the fine detection of geological hidden disasters such as geological structure, formation water storage, gas enrichment and ground pressure in coal mining, the performance and applicable conditions of advanced technical equipment for fine detection are systematically analyzed. Taking 1109 fully mechanized caving face of Jinggong mine of Inner Mongolia Haizhou Open Air Energy Co., Ltd. as an example, YCS512 mining intrinsically safe water detector, YDT88 mining radio wave perspective instrument advanced geophysical exploration equipment such as mine intrinsic safety borehole imager provides detailed and refined detection results for the roadway design and construction of 1109 fully mechanized top coal caving face, prevents the occurrence of geological disasters such as faults, water bearing strata and ground pressure appearance in roadway construction, ensures the safe connection of long-distance roadway and avoids the occurrence of major geological disasters during mining. The practice shows that the fine detection technology can provide accurate and reliable basic data of stratum structure, aquifer, ground pressure and other positions, and proves that the fine detection is a necessary prerequisite for making scientific decisions when realizing safe and efficient mining of coal seams with complex geological conditions.展开更多
Fault fracture zones and water-bearing bodies in front of the driving head are the main disasters in mine laneways,thus it is important to perform their advanced detection and prediction in advance in order to provide...Fault fracture zones and water-bearing bodies in front of the driving head are the main disasters in mine laneways,thus it is important to perform their advanced detection and prediction in advance in order to provide reliable technical support for the excavation.Based on the electromagnetic induction theory,we analyzed the characteristics of primary and secondary fields with a positive and negative wave form of current,proposed the fine processing of the advanced detection with variation rate of apparent resistivity and introduced in detail the computational formulae and procedures.The result of physical simulation experiments illustrate that the tectonic interface of modules can be judged by first-order rate of apparent resistivity with a boundary error of 5%,and the position of water body determined by the fine analysis method agrees well with the result of borehole drilling.This shows that in terms of distinguishing structure and aqueous anomalies,the first-order rate of apparent resistivity is more sensitive than the secondorder rate of apparent resistivity.However,some remaining problems are suggested for future solutions.展开更多
文摘Aiming at the fine detection of geological hidden disasters such as geological structure, formation water storage, gas enrichment and ground pressure in coal mining, the performance and applicable conditions of advanced technical equipment for fine detection are systematically analyzed. Taking 1109 fully mechanized caving face of Jinggong mine of Inner Mongolia Haizhou Open Air Energy Co., Ltd. as an example, YCS512 mining intrinsically safe water detector, YDT88 mining radio wave perspective instrument advanced geophysical exploration equipment such as mine intrinsic safety borehole imager provides detailed and refined detection results for the roadway design and construction of 1109 fully mechanized top coal caving face, prevents the occurrence of geological disasters such as faults, water bearing strata and ground pressure appearance in roadway construction, ensures the safe connection of long-distance roadway and avoids the occurrence of major geological disasters during mining. The practice shows that the fine detection technology can provide accurate and reliable basic data of stratum structure, aquifer, ground pressure and other positions, and proves that the fine detection is a necessary prerequisite for making scientific decisions when realizing safe and efficient mining of coal seams with complex geological conditions.
基金supports for this work,provided by the Natural Science Foundation of Jiangsu Province (No. BK2009095)the National Natural Science Foundation of China (No. 51004102)+1 种基金the National Science & Technology Support Project of the 11th Five-Year Plan of China (No. 2007Bak24B03)the State Basic Research and Development Program of China (No. 2007CB209400)
文摘Fault fracture zones and water-bearing bodies in front of the driving head are the main disasters in mine laneways,thus it is important to perform their advanced detection and prediction in advance in order to provide reliable technical support for the excavation.Based on the electromagnetic induction theory,we analyzed the characteristics of primary and secondary fields with a positive and negative wave form of current,proposed the fine processing of the advanced detection with variation rate of apparent resistivity and introduced in detail the computational formulae and procedures.The result of physical simulation experiments illustrate that the tectonic interface of modules can be judged by first-order rate of apparent resistivity with a boundary error of 5%,and the position of water body determined by the fine analysis method agrees well with the result of borehole drilling.This shows that in terms of distinguishing structure and aqueous anomalies,the first-order rate of apparent resistivity is more sensitive than the secondorder rate of apparent resistivity.However,some remaining problems are suggested for future solutions.
