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Full-section vertical shaft tunneling method

A full-section, vertical shaft technology, applied in vertical shaft equipment, well sinking, earth-moving drilling and mining, etc., can solve problems such as reduced driving efficiency, rotation of shield and segment, complicated procedures, etc., to improve holding stability and ensure holding The effect of maintaining stability and improving driving efficiency

Active Publication Date: 2020-10-13
SINOHYDRO JIAJIANG HYDRAULIC MACHINERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The shaft boring machine disclosed in this patent document adopts walking-type tunneling to improve the working efficiency of the shaft boring machine. However, the space for segment assembly is narrow and the process is complicated. Low reliability, resulting in lower overall tunneling efficiency

Method used

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  • Full-section vertical shaft tunneling method
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] see figure 1 and figure 2 , a full-face shaft excavation method, comprising the following steps:

[0035] a. Wellhead excavation and foundation construction, install and fix the wellhead frame 1 of the full-section shaft boring machine on the ground level, hoist the arc-shaped steel pipe pieces by a crane, and assemble and connect multiple arc-shaped steel pipe pieces into a ring-shaped steel pipe 2;

[0036] b. Hold the device to work, hold the oil cylinder 3 to retract, hold the ring 4 to close, hold the ring 4 to hold the ring 4-shaped steel pipe and the shield body 6 under the friction force of the friction block 5; the guide propulsion device works , the propulsion cylinder 7 pushes out the guide friction block 8, the guide friction block 8 presses the outer wall of the annular steel pipe 2, the guide friction block 8 transmits the thrust of the propulsion cylinder 7 to the excavation cutter head 9, holds the oil cylinder 3 and stretches out, and opens Holding t...

Embodiment 2

[0040] see figure 1 and figure 2 , a full-face shaft excavation method, comprising the following steps:

[0041] a. Wellhead excavation and foundation construction, install and fix the wellhead frame 1 of the full-section shaft boring machine on the ground level, hoist the arc-shaped steel pipe pieces by a crane, and assemble and connect multiple arc-shaped steel pipe pieces into a ring-shaped steel pipe 2;

[0042] b. Hold the device to work, hold the oil cylinder 3 to retract, hold the ring 4 to close, hold the ring 4 to hold the ring 4-shaped steel pipe and the shield body 6 under the friction force of the friction block 5; the guide propulsion device works , the propulsion cylinder 7 pushes out the guide friction block 8, the guide friction block 8 presses the outer wall of the annular steel pipe 2, the guide friction block 8 transmits the thrust of the propulsion cylinder 7 to the excavation cutter head 9, holds the oil cylinder 3 and stretches out, and opens Holding t...

Embodiment 3

[0047] see figure 1 and figure 2 , a full-face shaft excavation method, comprising the following steps:

[0048] a. Wellhead excavation and foundation construction, install and fix the wellhead frame 1 of the full-section shaft boring machine on the ground level, hoist the arc-shaped steel pipe pieces by a crane, and assemble and connect multiple arc-shaped steel pipe pieces into a ring-shaped steel pipe 2;

[0049] b. Hold the device to work, hold the oil cylinder 3 to retract, hold the ring 4 to close, hold the ring 4 to hold the ring 4-shaped steel pipe and the shield body 6 under the friction force of the friction block 5; the guide propulsion device works , the propulsion cylinder 7 pushes out the guide friction block 8, the guide friction block 8 presses the outer wall of the annular steel pipe 2, the guide friction block 8 transmits the thrust of the propulsion cylinder 7 to the excavation cutter head 9, holds the oil cylinder 3 and stretches out, and opens Holding t...

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Abstract

The invention discloses a full-section vertical shaft tunneling method, and belongs to the technical field of vertical shaft construction. The full-section vertical shaft tunneling method is characterized by comprising the following steps that a, a wellhead is excavated, and a foundation is constructed; b, a holding ring holds an annular steel pipe and a shield body under the action of the friction force of a holding friction block; the thrust of a thrust oil cylinder is transmitted to a tunneling cutter head by a guide friction block, the tunneling cutter head rotates to tunnel downwards andvertically under the action of a driving piece, and a mud water circulating device works to discharge mud; and c, an arc-shaped steel pipe sheet is hoisted through a crane, a next annular steel pipe is assembled, the connection between rings of two annular steel pipes is carried out, a holding oil cylinder extends out, the holding ring is opened, and the tunneling operation is repeated. Accordingto the full-section vertical shaft tunneling method, space can be saved for arc-shaped steel pipe sheet assembly, the holding reliability is improved, the construction procedure is simplified, the disassembly and the assembly are convenient, the mud can be rapidly discharged in the downward vertical tunneling process, the reliability and the tunneling efficiency of vertical shaft tunneling are improved, and the whole tunneling process is easy to operate.

Description

technical field [0001] The invention relates to the technical field of shaft construction, in particular to a full-section shaft excavation method. Background technique [0002] The well-like pipes standing upright on the cave wall are called shafts, which are actually a kind of collapse funnel. Shafts are square, strip-shaped or irregularly circular in plan profile. Long strips are developed along one set of joints, square or round are developed along two sets of joints. The walls of the well are steep and almost upright. Shafts are widely used in water conservancy and hydropower projects for water intake, water diversion, ventilation, slag removal, and gas supply. Shaft construction has the characteristics of small footprint and less interference with surrounding construction. However, due to the small space for shaft construction, long construction period, many climbing and side operations, and inconvenient traffic, the safety risks of shaft construction are prominent....

Claims

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Application Information

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IPC IPC(8): E21D1/08E21D1/06E21D5/10E21D5/12E21D7/00E21B21/00
CPCE21D1/08E21D1/06E21D5/10E21D5/12E21D7/00E21B21/00Y02E10/20
Inventor 曾文李欣欣吴思够张君松代新启许强谭晓波
Owner SINOHYDRO JIAJIANG HYDRAULIC MACHINERY
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