Method for determining construction sequence of mine shaft engineering

(1) Construction plan of mine shaft and roadway engineering

1. One-way tunneling: 2. Digging head:

(2) Construction sequence of main and auxiliary shafts

The main and auxiliary wells are usually subjected to sequential twisting. Because the permanent equipment of the auxiliary shaft is generally longer, most of them are temporary cages of the main wells, and temporarily undertake the development of the roadway engineering. Then the auxiliary wells are permanently equipped and the permanent wells are completed. After that, the auxiliary shaft undertakes the development task and the main well carries out permanent equipment.

1. The main and auxiliary wells are started at the same time.

After the auxiliary well is completed, the comprehensive and rapid construction lifting and ventilation conditions of the underground roadway cannot be formed immediately. Only more single heads can be made, and the lifting buckets are lifted. The underground transportation system and ventilation system are very complicated, which is easy to cause work and safety. Construction also brings a lot of pressure.

2. The main and auxiliary wells are staggered.

The application is more common, and the time for the main and auxiliary wells to be staggered should be determined according to the optimal network diagram, which is generally 1-1-4 months.

(1) The main well is in the front, the auxiliary well is in the back (2) the auxiliary well is in the front, and the main well is in the back.

3. Construction sequence of the bucket loading chamber

The final time of the main wellbore is related to the construction sequence of the bucket loading chamber. There are three construction sequences:

First, the construction of the main wellbore and its chamber was completed. The disadvantage is that the wellbore takes up a long construction period; the advantage is that high-altitude operation is avoided, the safety construction is relatively easy to guarantee, the secondary transformation and suspension of the lifting system are reduced, and the formation time of the main well system can be advanced.

Second, the main wellbore is excavated to the end, and the cornice is reserved. After the auxiliary well cage is put into use, the diverticulum project is completed at the same time as the main well tower construction.

Third, when the squatting chamber is placed below the level of the yard, when the geological conditions of the bottom of the well are particularly complicated, the main shaft can be used for the first time to reach the transportation level. After the auxiliary tank is lifted, the lower shaft and bucket are constructed. The loading chamber and the wellbore are completed at one time.

(3) Construction sequence of main and auxiliary wells and wind shafts

Generally, the wind shaft wellbore on the critical route can be started before the main and auxiliary wells, or at the same time as the main and auxiliary wells or later in the main and auxiliary wells. The specific construction sequence can be arranged according to the construction and queuing plan of the roadway engineering. . For wind shafts on non-mainly contradictory lines, the start-up time can be appropriately postponed, so as not to affect the overall schedule of the roadway project or the total construction period.

Quick Connector

Shinyfly Quick connector is composed of body, in O-ring, spacer ring, out O-ring, securing ring and locking spring. When inserting another pipe adapter(Male End Piece) into the connector, since the locking spring has certain elasticity, the two connectors can be connected together with the buckle fastener, and then pull back to ensure the installation in place. In this way, the quick connector will work. During maintenance and disassembly, first push in male end piece, then press locking spring end till expansion from the middle, the connector can be easily pulled out. Lubricated with SAE 30 heavy oil before re-connecting.