【摘要】 鹤岗矿务局竣德煤矿水力采煤区在解决掘进速度慢 ,采掘衔接紧张的问题时 ,该矿根据煤层条件和矿山压力的呈现规律 ,在与 2 1煤层南块采煤时 ,把梯形木棚支护改为单帮点柱支护 ,实现了水力采煤提高单产的目的 ,取得了较好的经济效益更多还原

【Abstract】 To solve problems of slow advance rate and inconsistency in driving in hydromining area of Junde Coal Mine of Hegang Mining Administration, in view of coal seams condition and pattern of rock pressure manifestation, during mining in south part of No. 21 coal seam, the trapezium-shaped timber set support is changed into single-side pointed prop support to achieve the goals of improving unit output of hydraulic mining and better economic benefit have been gained.更多还原