发明名称 |
METHOD OF REPLACEMENT OF UNDERGROUND PIPE LINES WITHOUT DIGGING-OUT TRENCHES |
摘要 |
FIELD: replacement of defective underground pipe lines without digging-out trenches. SUBSTANCE: old pipe line is broken through passing striking working member through it; then new wall is formed into which new pipe line is forced; couplings and pits are removed and parameters of pipe line are retained. Removal is effected through submergence of casing pipe from surface at areas where obstacles (couplings and pits) are located. EFFECT: enhanced efficiency at low expenditures. 6 cl, 10 dwgs |
申请公布号 |
RU2115856(C1) |
申请公布日期 |
1998.07.20 |
申请号 |
RU19960121169 |
申请日期 |
1996.10.14 |
申请人 |
GOSUDARSTVENNO-AKTSIONERNAJA NAUCHNO-PROIZVODSTVEN |
发明人 |
SAVEL'EV A.S.;KHAR'KIN V.A.;ZHARKOV E.G.;PLAVSKIKH V.D.;GRIGORASHCHENKO V.A. |
分类号 |
F16L1/024 |
主分类号 |
F16L1/024 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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