Reinforcing method for shaft penetrating through weak surrounding rock
The invention relates to a reinforcing method for a shaft penetrating through weak surrounding rock. The stability of the surrounding rock is fundamentally enhanced, and the shaft tunneling construction safety is improved. The reinforcing method specifically comprises the steps that shaft constructi...
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| creator | ZHAN DEGUANG YANG YIQUAN WANG NAIBIN QI YUNPU XIA ANYUAN SHU XUEFU LIU CHAO CHEN LIXIN |
| description | The invention relates to a reinforcing method for a shaft penetrating through weak surrounding rock. The stability of the surrounding rock is fundamentally enhanced, and the shaft tunneling construction safety is improved. The reinforcing method specifically comprises the steps that shaft construction is stopped when the shaft is constructed to the position away from a weak layer by a certain distance, an original rock grout stopping pad with a certain thickness is reserved, concrete with a certain thickness is poured at the bottom of a shaft, and grout stopping pad concrete is formed; after the concrete reaches the design strength, drilling operation is conducted, after a drilled hole reaches the designed hole depth, steel bars are put into the hole, the length of the steel bars is the same as the depth of the drilled hole, and then the hole is subjected to grouting for the last time; and after grouting of the single hole is finished, the next hole is constructed nearby, and drilling and grouting are sequent |
| format | Patent |
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The stability of the surrounding rock is fundamentally enhanced, and the shaft tunneling construction safety is improved. 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The stability of the surrounding rock is fundamentally enhanced, and the shaft tunneling construction safety is improved. The reinforcing method specifically comprises the steps that shaft construction is stopped when the shaft is constructed to the position away from a weak layer by a certain distance, an original rock grout stopping pad with a certain thickness is reserved, concrete with a certain thickness is poured at the bottom of a shaft, and grout stopping pad concrete is formed; after the concrete reaches the design strength, drilling operation is conducted, after a drilled hole reaches the designed hole depth, steel bars are put into the hole, the length of the steel bars is the same as the depth of the drilled hole, and then the hole is subjected to grouting for the last time; and after grouting of the single hole is finished, the next hole is constructed nearby, and drilling and grouting are sequent</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS |
| title | Reinforcing method for shaft penetrating through weak surrounding rock |
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