摘要
水压致裂坚硬顶板适用于煤层顶板为2 m^3 m厚的坚硬中、粗砂岩,避免了常规炸药爆破带来的潜在威胁,安全可靠,致裂效果好,使裂缝的扩展在时间和空间上更具均匀性和充分性,具有广泛的实用性。
Hydraulic fracturing hard roof is suitable for hard medium and thick sandstone of 2m^3 m coal seam roof, it avoids potential threats from conventional explosive demolition, this technique is safer and more reliable, the fracturing effect is good, the crack extension in time and space is made more uniformity and sufficiency, it has extensive practicability.
出处
《同煤科技》
2015年第4期1-3,共3页
Datong Coal Science & Technology
关键词
水压致裂
坚硬顶板
双系煤层
hydraulic fracturing
hard roof
double system coalfield
