山西煤炭
山西煤炭
산서매탄
SHANXI COAL
2014年
9期
68-69
,共2页
穿层钻孔%卸压%防治突出
穿層鑽孔%卸壓%防治突齣
천층찬공%사압%방치돌출
boreholes across seams%pressure relief%outburst control
采用顺层钻孔进行区域消突中，顺层钻孔区域预抽可以降低瓦斯含量，预抽准备掘进的煤巷和煤巷周围煤体的瓦斯，但其不能消除周围煤体的突出危险性，施工顺层钻孔时仍会出现喷孔、顶钻等动力现象。所以通过临近岩巷布置穿层钻孔，要对前方煤体进行消突工作，依靠岩巷掩护，对突出危险区域进行卸压，在煤体中形成一定范围的卸压区域；在这安全区域内，破坏了煤与瓦斯突出的基础条件，起到了有效防治突出的作用。
採用順層鑽孔進行區域消突中，順層鑽孔區域預抽可以降低瓦斯含量，預抽準備掘進的煤巷和煤巷週圍煤體的瓦斯，但其不能消除週圍煤體的突齣危險性，施工順層鑽孔時仍會齣現噴孔、頂鑽等動力現象。所以通過臨近巖巷佈置穿層鑽孔，要對前方煤體進行消突工作，依靠巖巷掩護，對突齣危險區域進行卸壓，在煤體中形成一定範圍的卸壓區域；在這安全區域內，破壞瞭煤與瓦斯突齣的基礎條件，起到瞭有效防治突齣的作用。
채용순층찬공진행구역소돌중，순층찬공구역예추가이강저와사함량，예추준비굴진적매항화매항주위매체적와사，단기불능소제주위매체적돌출위험성，시공순층찬공시잉회출현분공、정찬등동력현상。소이통과림근암항포치천층찬공，요대전방매체진행소돌공작，의고암항엄호，대돌출위험구역진행사압，재매체중형성일정범위적사압구역；재저안전구역내，파배료매여와사돌출적기출조건，기도료유효방치돌출적작용。
In the process of regional outburst control with bedding boreholes, regional pre-draining with the bedding boreholes could reduce the gas content in the roadways to be drilled and in coal bodies surrounding the roadways, but could not eliminate the outburst hazard. Hole spraying, stuck drill, and other dynamic phenomena would occur in the construction of the bedding boreholes. Therefore, boreholes across seams were placed near rock tunnels. To control the outburst in front of faces, the pressure was relieved in the outburst hazard zones on the covering of the rock roadways. Some relief areas were formed. In the safe areas, the basic conditions of coal and gas outburst were destroyed which played an effective role in the outburst control.
