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    • 8. 发明授权
    • Mining method for methane drainage and rock conditioning
    • 甲烷排水和岩石调节采矿方法
    • US3650564A
    • 1972-03-21
    • US3650564D
    • 1970-06-15
    • JACOBS ASSOCIATESTHOMAS N WILLIAMSON
    • WILLIAMSON THOMAS N
    • E21C37/00E21F5/18E21F7/00F42D3/00C06C5/00E21C27/20
    • F42D3/00E21C37/00E21F5/18E21F7/00
    • Deep (long) parallel holes are drilled into a mine or tunnel face and explosive charges selectively exploded in some, but preferably not all, of such holes to fragment surrounding rock and join the holes. Methane migrates through the fractured formation to the hole which has not been exploded, or to a separately drilled drainage hole, and the unexploded or separate hole is first used to draw off explosive gases, where this is a problem. Then water is pumped through such hole or holes to saturate the formation to reduce dust suspension and also to cause additional gas migration. The fractured formation facilitates mechanical boring machines and reduces tool wear. The explosives are preferably provided at spaced intervals along a carrier tube with stiffeners to enable the tube to be pushed into the deep hole and with built-in electrical connections and stemming. The carrier for the explosives is preferably plastic and thus does not damage boring tools.
    • 在矿井或隧道表面钻出深(长)平行孔,爆炸物选择性地在一些但优选不是全部的这些孔中分解,以分解周围岩石并连接孔。 甲烷通过破裂地层迁移到尚未爆炸的孔中,或者通过另外钻出的排水孔进行迁移,首先将未爆炸或分离的孔用于抽出爆炸性气体,这是一个问题。 然后将水通过这样的孔或孔泵送以使地层饱和以减少灰尘悬浮并且还引起额外的气体迁移。 断裂的地层有助于机械镗床,并减少刀具磨损。 爆炸物优选地沿着具有加强件的承载管以间隔开的间隔设置,以使得管能够被推入深孔中并且具有内置的电连接和引导。 爆炸物的载体优选是塑料,因此不会损坏钻孔工具。
    • 10. 发明授权
    • Method of securing objects in passages and arrangement obtained thereby,
particularly hose lines sealingly secured in the passages of coal mines
for dust suppression
    • 特别是通过密封地固定在煤矿通道中的用于防尘的通道的软管管线,在通道中固定物体的方法和装置
    • US4008576A
    • 1977-02-22
    • US503899
    • 1974-09-09
    • Frank MeyerHelmut BeckerHeinz Goretz
    • Frank MeyerHelmut BeckerHeinz Goretz
    • E21F5/18E21C35/22
    • E21F5/18
    • An object extends into a passage and defines a clearance space with the inner wall of the passage. A hardenable, foamable synthetic resin in flowable state is admitted into the clearance space. Upon hardening and foaming of the synthetic resin, the object is sealingly secured in the passage by the synthetic resin. In a preferred application, the passage is one provided in a coal mine and the object is a hose line for the purpose of suppressing dust. The synthetic resin is advantageously polyurethane including a polyhydroxyl component which contains a polyetherglycol having a hydroxyl number of 300 to 350 and a polyetherglycol having a hydroxyl number of 450 to 500. The polyetherglycol components respectively constitute 80 to 90 parts and 10 to 20 parts of the polyhydroxyl component. The polyhydroxyl component preferably includes a filler in an amount such that the weight of the latter at least equals that of the polyhydroxyl component.
    • 物体延伸到通道中并且与通道的内壁限定间隙空间。 可流动状态的可发泡的可发泡合成树脂进入间隙空间。 在合成树脂硬化和起泡时,物体通过合成树脂密封地固定在通道中。 在优选的应用中,通道是设置在煤矿中的物体,并且该物体是用于抑制灰尘的软管线。 合成树脂有利地是聚氨酯,其包含含羟基数为300至350的聚醚二醇和羟基数为450至500的聚醚二醇的多羟基组分。聚醚二醇组分分别构成80至90份和10至20份 多羟基成分。 多羟基组分优选包括一定量的填料,使得后者的重量至少等于多羟基组分的重量。