Underground mining arch gateway system专利检索-挖矿资料储存系统专利检索查询-专利查询网

Underground mining arch gateway system

阅读：902发布：2022-12-16

专利汇可以提供Underground mining arch gateway system专利检索，专利查询，专利分析的服务。并且This invention relates to a corrugated steel arch gangway system used in a method of mining an underground ore body. Commencing at the bottom of the ore body, successive horizontal cuts or layers are excavated, processed and backfilled with tailings from the processing. An arch shaped longitudinal horizontal portion of the gangway system is erected on the floor of the first lower cut and a plurality of first and second hollow extendible upward extending vertical portions are connected thereto by transverse horizontal portions. The horizontal portion of the gangway system is covered by a layer of backfill and then the first vertical portions or manways provide access from the horizontal portion to successive upward adjacent cuts which are mined and the ore is removed through the second vertical portions or millholes to a railway operating in the horizontal portion of the gangway system. As each cut is excavated, it is backfilled by a cemented hydraulic backfill following extension of the vertical portions. The longitudinal horizontal portion of the gangway system is constructed of a plurality of overlapping arch shaped sections, each of which is formed of a flat based member and first and second curved wall members. The members and the sections are initially positioned by being bolted together, and then securely connected by a plurality of self-drilling screws spaced along the joints.，下面是Underground mining arch gateway system专利的具体信息内容。

权利要求

1. A gangway system manually erectable within confined underground openings excavated during backfill mining to provide a horizontal network for the progressive excavation of ore, comprising a plurality of interconnected elongated horizontal portions erectable underground in a confined space in communication with a plurality of first and second vertical portions, said horizontal portion being formed of a plurality of over-lappingly connected arch shaped sections comprising: a. a flat corrugated steel base member having first and second ends and adapted to support mine cars on tracks, b. a first corrugated steel curved wall member having upper and lower ends, said lower end adapted to be securely connected to said first end of said base member, and c. a second corrugated steel curved wall member having upper and lower ends, said lower end adapted to first be securely connected to said second end of said base member, said upper end adapted to then be securely connected to said upper end of said first wall member, said horizontal portions being adapted to be buried in a first layer of backfill after erection with said vertical portions projecting upward therefrom through said first layer of backfill to an upward horizontal ore layer, said vertical portions being upwardly extendible to project through successive upward horizontal backfill layers to successive upward horizontal ore layers, said vertical portions being spaced to provide Access to said successive ore layers and for economical removal of ore downwardly therethrough to said horizontal network.

2. A gangway system as claimed in claim 1 further including a plurality of hollow transverse horizontal portion extending laterally from the longitudinal horizontal portions and the lower end of a corresponding one of the first vertical portion to communicate first vertical portion with said longitudinal horizontal portion.

3. A gangway system as claimed in claim 2 wherein the transverse horizontal portions and the first vertical portions are formed of corrugated steel.

4. A gangway system as claimed in claim 3 wherein the transverse horizontal portions and the vertical portions are cylindrically shaped.

5. A gangway system as claimed in claim 4 wherein the second vertical portions are cylindrically shaped and formed of one inch steel plate.

6. A gangway system as claimed in claim 1 wherein each of the first vertical portions include vertically extending stairs.

7. A gangway system as claimed in claim 1, wherein the said ends of the base member and the first and second wall members of each section are adapted to be overlappingly connected.

8. A gangway system as claimed in claim 1, wherein the said ends of the base member and the first and second wall members of each section have matching bolt holes therethrough and are adapted to be initially overlappingly positioned by nut and bolt engagement therein and then securely overlappingly connected by a plurality of spaced self-drilling fasteners extending therethrough.

9. A gangway system as claimed in claim 1 wherein adjoining arch shaped sections have circumferentially spaced matching bolt holes therethrough and are adapted to be initially positioned by nut and bolt engagement therein and then securely overlappingly connected by a plurality of circumferentially spaced self-drilling fasteners extending therethrough.

10. A gangway system as claimed in claim 1 wherein the base member and the first and second wall members of each section are formed of 12 gauge corrugated steel of substantially a 2 2/3 inch pitch and 1/2 inch depth.

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