www.public4you.fora.pl

px941934

Frozen section of the main mine shaft of the canal Rapid Construction

Of well velocity are 49.09m / freeze on main and two shaft surface section construction picks are boring and artificial, single hook temporary change to enhance both the main well twisted needs, the choice of a 3/11.5 2JK type winch, IV-type Heightening steel drilling derrick, with 2.5m bucket; Auxiliary use a 2.5/11.5 JK type winch,[link widoczny dla zalogowanych], dual-use production drilling derrick,[link widoczny dla zalogowanych], with Construction Technology Volume 1998 l9 2.5m. Bucket. Section of frozen rock drilling and blasting method are used rotating workers, long rope hanging out the refuse grab machine. The main shaft of a 70-rail use YGZ high frequency rock drills drilling, 0.4m. Long rope hanging out the refuse grab machine. Auxiliary selection FJD6G type umbrella rigs, O. 6m. Long rope hanging out the refuse grab machine. Frozen section of outer edge of the feet and the template are used separate metal hanging down the whole foot blade template building wall. Built wall segments and expanded clay high in the segment is 2m, clay and sand in the general section height is 3m. Template design for the bottom two sections, the section with a mouth watering high-2m, the next section of high lm, between the upper and lower sections connected by bolts into a whole paragraph to the expanded clay narrow section of the template removal high the next section. Concrete wall built by the JQlOO0 Forced mixer (ground 1 each for the main shaft of the wellhead platform) mixing, sand, gravel, cement centralized supply, 1.6m hopper bucket cutting, concrete dust control points by hanging into the mold plate pouring. Climbing wall construction are used in successive sets of hydraulic sliding bottom wall. Expanded clay layers in the freezing, when the shortage of well diameter to help driving the temperature below 4 ℃, the wall structure according to the normal work rotation; than a 4C, the use of the outside of the wall thickness is increased by 1 3oomm the material Stone block, or precast concrete blocks. In the depth of the main shaft 109.7 ~ 113.3m, 137.1 ~ 138.4m, 143.7 ~ 149.0m and 159. O ~ 172.7m four paragraphs (the total thickness of 23.9m) materials stone and precast concrete block count 7700. Auxiliary in depth lO5.6 ~ 107.6m, 1lo. 4 ~ l14.8m, 118.15 ~ l19.35m and 161.25 ~ 190.9m four paragraphs (the total thickness of 37.o5m) materials stone and precast concrete blocks count 13ooo block. The two are safe and smooth bore through several layers deep expansive clay. Fast freeze section of main and auxiliary shaft construction experience are: (1) selection of a reasonable construction scheme. Combined with the overall sub-high wall of metal down the template building wall, inside wall of the hydraulic slide sets of walls. Concrete focus for the material, independent sub-shaft mixing hopper bucket under the materials. (L0 next turn page) (Continued from page 25) Rotary Drilling work after the wall into the normal use stage, the outside pressures on the wall that is permanently pressing, but with the continuation of the underground tunnel to open up or horse the door shaft bottom and the bottom of the first contact of the rotary roadway work, a re-formation of the internal force distribution of the process, and thus bore a certain impact force. From the phase of the test results, to more accurately reflect the stage of normal wall stress situation,[link widoczny dla zalogowanych], shown in Figure 24, after the conclusion 7a Chensilou Mine construction, in 1997, the smooth operation l0 months after the central shaft air shaft construction, the wall After filling, Ingate development, a series of underground tunnels to open up the process of excavation, to November 1996, the central air shaft wall by long-term safety monitoring of internal and external forces that work this well in the drilling process of rotating the normal force; in into the first two years of normal use within its force is still unstable phase, over time,[link widoczny dla zalogowanych], external mining, open up the impact of stress on the shaft will gradually decrease, both inside and outside wall power will gradually stabilize. From the test results, the circumferential wall force changes to a lesser extent, become stable, while the vertical stress is still not stable enough, but the general test situation, the horizontal position of the shaft of the two forces within the normal range. Have the following experience: (1) of the drilling shaft for long-term safety monitoring, must pay attention to component selection and all aspects of the seal,[link widoczny dla zalogowanych], which is critical to ensure that the test is successful; (2) to formulate a reasonable testing program, well take all measures rule out the authenticity of the factors that affect the test results can be monitored effectively to ensure, so as to determine whether or not the basis for the safety shaft. (3) internal and external forces on the wall for long-term safety monitoring, can provide safety prediction wellbore information, help ensure safe and reliable service shaft production of test data analysis, drilling shaft in order to lay the foundation for the structure of the in-depth study. 1 liter of Jane Liu at hui. Male, born in 1962. Senior engineer in 1982, graduated from Northeast University of Technology, 1987, at the China Coal Research Institute received a master's degree graduate t Institute of Beijing is now well established in the permanent support structure of the drilling, testing and measurement. Building, construction and other projects bored. 1o articles published pro Pat.
More articles related to topics：

[link widoczny dla zalogowanych]

ugg schuhe About _2890 Ukraine Drilling Engineerin

ugg boots sale Before Cancer Invades Your Life . .