建井技术
建井技術
건정기술
2015年
2期
22-24
,共3页
立井%井壁砌筑%混凝土输送管%防堵塞技术
立井%井壁砌築%混凝土輸送管%防堵塞技術
립정%정벽체축%혼응토수송관%방도새기술
mine shaft%mine shaft lining%concrete transportation pipeline%jamming prevention techno-logy
立井采用现浇混凝土支护技术，混凝土从地面通过输送管输送到井下工作面，砌筑井壁。输送管一般采用直径159～219 mm 的无缝钢管。浇筑混凝土过程中，输送管如果发生堵塞，操作人员往往很难发现，会给施工带来重大安全隐患。为确保安全，在输送管出料口以上20～25 m 处，安装堵塞报警器，一旦输送管发生堵塞，可及时发现、及时处理。
立井採用現澆混凝土支護技術，混凝土從地麵通過輸送管輸送到井下工作麵，砌築井壁。輸送管一般採用直徑159～219 mm 的無縫鋼管。澆築混凝土過程中，輸送管如果髮生堵塞，操作人員往往很難髮現，會給施工帶來重大安全隱患。為確保安全，在輸送管齣料口以上20～25 m 處，安裝堵塞報警器，一旦輸送管髮生堵塞，可及時髮現、及時處理。
립정채용현요혼응토지호기술，혼응토종지면통과수송관수송도정하공작면，체축정벽。수송관일반채용직경159～219 mm 적무봉강관。요축혼응토과정중，수송관여과발생도새，조작인원왕왕흔난발현，회급시공대래중대안전은환。위학보안전，재수송관출료구이상20～25 m 처，안장도새보경기，일단수송관발생도새，가급시발현、급시처리。
A cast-in-place concrete support technology was applied to the mine shaft and the concrete was transported from the surface ground to the working face in the underneath of the mine shaft with the transportation pipeline for the mine shaft lining. A diameter of 159 ~ 219 mm seamless steel pipe would be generally applied for the transportation pipeline .During the cast-in-place concrete process , once a jamming occurred in the transportation pipeline ,the operation personnel would be hard to find the jamming and the jamming could cause important safety hidden peril to the mine shaft construction . In order to ensure the safety ,at the location with a distance of 20 ~ 25 m up to the transportation pipe‐line feeder ,a jamming alarm should be set up .Once a jamming occurred in the transportation pipeline , the jamming could be timely found and timely treated.
